diff --git a/changelog_entry.yaml b/changelog_entry.yaml
index e69de29bb2d..5ee6120d316 100644
--- a/changelog_entry.yaml
+++ b/changelog_entry.yaml
@@ -0,0 +1,4 @@
+- bump: minor
+  changes:
+    changed:
+    - Update Ohio income tax model for tax year 2025 with new brackets, exemptions, and credits.
diff --git a/policyengine_us/parameters/gov/states/oh/tax/income/additions.yaml b/policyengine_us/parameters/gov/states/oh/tax/income/additions.yaml
index 65dc0cd9c00..333e27e7b31 100644
--- a/policyengine_us/parameters/gov/states/oh/tax/income/additions.yaml
+++ b/policyengine_us/parameters/gov/states/oh/tax/income/additions.yaml
@@ -16,5 +16,7 @@ metadata:
       href: https://dam.assets.ohio.gov/image/upload/tax.ohio.gov/forms/ohio_individual/individual/2023/1040-bundle-original.pdf#page=3
     - title: Ohio Income Tax Form 2023 Instructions
       href: https://dam.assets.ohio.gov/image/upload/tax.ohio.gov/forms/ohio_individual/individual/2023/it1040-sd100-instructionbooklet.pdf#page=19
-    - title: Ohio Income Tax Form 2024 Instructions 
-      href: https://dam.assets.ohio.gov/image/upload/tax.ohio.gov/forms/ohio_individual/individual/2023/it1040-sd100-instructionbooklet.pdf#page=19
+    - title: Ohio Income Tax Form 2024 Instructions
+      href: https://dam.assets.ohio.gov/image/upload/v1735920104/tax.ohio.gov/forms/ohio_individual/individual/2024/it1040-booklet.pdf#page=19
+    - title: Ohio Income Tax Form 2025 Instructions (Page 19)
+      href: https://dam.assets.ohio.gov/image/upload/v1767095693/tax.ohio.gov/forms/ohio_individual/individual/2025/it1040-booklet.pdf#page=19
diff --git a/policyengine_us/parameters/gov/states/oh/tax/income/agi_threshold.yaml b/policyengine_us/parameters/gov/states/oh/tax/income/agi_threshold.yaml
index 0dcd831a9a7..36beb17a98d 100644
--- a/policyengine_us/parameters/gov/states/oh/tax/income/agi_threshold.yaml
+++ b/policyengine_us/parameters/gov/states/oh/tax/income/agi_threshold.yaml
@@ -6,11 +6,15 @@ metadata:
   unit: currency-USD
   label: Ohio assigns minimum income threshold to pay individual income tax.
   reference:
+    - title: Ohio Revised Code Section 5747.02, Tax rates
+      href: https://codes.ohio.gov/ohio-revised-code/section-5747.02
     - title: Ohio Income Tax Form 2021 Instructions
       href: https://tax.ohio.gov/static/forms/ohio_individual/individual/2021/pit-it1040-booklet.pdf#page=31
     - title: Ohio Income Tax Form 2022 Instructions
       href: https://dam.assets.ohio.gov/image/upload/tax.ohio.gov/forms/ohio_individual/individual/2022/it1040-sd100-instruction-booklet.pdf#page=31
     - title: Ohio Income Tax Form 2023 Instructions
       href: https://dam.assets.ohio.gov/image/upload/tax.ohio.gov/forms/ohio_individual/individual/2023/it1040-sd100-instructionbooklet.pdf#page=46
-    - title: Ohio Income Tax Form 2024 Instructions 
-      href: https://dam.assets.ohio.gov/image/upload/tax.ohio.gov/forms/ohio_individual/individual/2023/it1040-sd100-instructionbooklet.pdf#page=18
+    - title: Ohio Income Tax Form 2024 Instructions
+      href: https://dam.assets.ohio.gov/image/upload/v1735920104/tax.ohio.gov/forms/ohio_individual/individual/2024/it1040-booklet.pdf#page=18
+    - title: Ohio Income Tax Form 2025 Instructions (Page 18)
+      href: https://dam.assets.ohio.gov/image/upload/v1767095693/tax.ohio.gov/forms/ohio_individual/individual/2025/it1040-booklet.pdf#page=18
diff --git a/policyengine_us/parameters/gov/states/oh/tax/income/credits/cdcc/match.yaml b/policyengine_us/parameters/gov/states/oh/tax/income/credits/cdcc/match.yaml
index 834a81a5088..95b3d3bbc90 100644
--- a/policyengine_us/parameters/gov/states/oh/tax/income/credits/cdcc/match.yaml
+++ b/policyengine_us/parameters/gov/states/oh/tax/income/credits/cdcc/match.yaml
@@ -19,7 +19,9 @@ metadata:
   type: single_amount
   label: Ohio Child Care and Dependent Care Credit amount
   reference:
-    - title: Ohio 2021 Instructions for Filing Original and Amended - Line 6 – Child Care and Dependent Care Credit
+    - title: Ohio Revised Code Section 5747.054, Tax credit based on federal dependent care credit
+      href: https://codes.ohio.gov/ohio-revised-code/section-5747.054
+    - title: Ohio 2021 Instructions for Filing Original and Amended - Line 6
       href: https://tax.ohio.gov/static/forms/ohio_individual/individual/2021/pit-it1040-booklet.pdf#page=30
     - title: Ohio Income Tax Form 2022 Instructions (line 6)
       href: https://dam.assets.ohio.gov/image/upload/tax.ohio.gov/forms/ohio_individual/individual/2022/it1040-sd100-instruction-booklet.pdf#page=20
@@ -27,5 +29,5 @@ metadata:
       href: https://dam.assets.ohio.gov/image/upload/tax.ohio.gov/forms/ohio_individual/individual/2023/it1040-sd100-instructionbooklet.pdf#page=45
     - title: Ohio Income Tax Form 2024 Instructions (line 6)
       href: https://dam.assets.ohio.gov/image/upload/v1735920104/tax.ohio.gov/forms/ohio_individual/individual/2024/it1040-booklet.pdf#page=45
-    - title: Ohio Section 5747.054, Tax credit based on federal dependent care credit
-      href: https://codes.ohio.gov/ohio-revised-code/section-5747.054
+    - title: Ohio Income Tax Form 2025 Instructions (Page 45)
+      href: https://dam.assets.ohio.gov/image/upload/v1767095693/tax.ohio.gov/forms/ohio_individual/individual/2025/it1040-booklet.pdf#page=45
diff --git a/policyengine_us/parameters/gov/states/oh/tax/income/credits/eitc/rate.yaml b/policyengine_us/parameters/gov/states/oh/tax/income/credits/eitc/rate.yaml
index 003faab8406..4da4a7365d7 100644
--- a/policyengine_us/parameters/gov/states/oh/tax/income/credits/eitc/rate.yaml
+++ b/policyengine_us/parameters/gov/states/oh/tax/income/credits/eitc/rate.yaml
@@ -6,7 +6,7 @@ metadata:
   period: year
   label: Ohio earned income credit rate
   reference:
-    - title: Ohio Revised Code §5747.71 | Earned income tax credit
+    - title: Ohio Revised Code Section 5747.71 | Earned income tax credit
       href: https://codes.ohio.gov/ohio-revised-code/section-5747.71
     - title: Ohio 2022 Instructions for Filing Original and Amended - Line 13
       href: https://tax.ohio.gov/static/forms/ohio_individual/individual/2022/it1040-sd100-instruction-booklet.pdf#page=21
@@ -14,3 +14,5 @@ metadata:
       href: https://dam.assets.ohio.gov/image/upload/tax.ohio.gov/forms/ohio_individual/individual/2023/it1040-sd100-instructionbooklet.pdf#page=29
     - title: Ohio Income Tax Form 2024 Instructions (line 13)
       href: https://dam.assets.ohio.gov/image/upload/v1735920104/tax.ohio.gov/forms/ohio_individual/individual/2024/it1040-booklet.pdf#page=29
+    - title: Ohio Income Tax Form 2025 Instructions (Page 29)
+      href: https://dam.assets.ohio.gov/image/upload/v1767095693/tax.ohio.gov/forms/ohio_individual/individual/2025/it1040-booklet.pdf#page=29
diff --git a/policyengine_us/parameters/gov/states/oh/tax/income/credits/exemption/amount.yaml b/policyengine_us/parameters/gov/states/oh/tax/income/credits/exemption/amount.yaml
index cd534a61f12..45291700d5e 100644
--- a/policyengine_us/parameters/gov/states/oh/tax/income/credits/exemption/amount.yaml
+++ b/policyengine_us/parameters/gov/states/oh/tax/income/credits/exemption/amount.yaml
@@ -15,13 +15,15 @@ metadata:
   period: year
   label: Ohio Exemption Credit amount
   reference:
-    - title: Ohio Revised Code - Section 5747.022： Tax credits for exemptions
-      href: https://law.justia.com/codes/ohio/2022/title-57/chapter-5747/section-5747-022/
-    - title: 2022 Ohio IT 1040 Individual Income Tax Return Form Instructions (Line 9)
-      href: https://tax.ohio.gov/static/forms/ohio_individual/individual/2022/it1040-sd100-instruction-booklet.pdf#page=20
+    - title: Ohio Revised Code Section 5747.022 - Tax credits for exemptions
+      href: https://codes.ohio.gov/ohio-revised-code/section-5747.022
     - title: 2021 Ohio IT 1040 Individual Income Tax Return Form Instructions (Line 9)
       href: https://tax.ohio.gov/static/forms/ohio_individual/individual/2021/pit-it1040-booklet.pdf#page=20
+    - title: 2022 Ohio IT 1040 Individual Income Tax Return Form Instructions (Line 9)
+      href: https://tax.ohio.gov/static/forms/ohio_individual/individual/2022/it1040-sd100-instruction-booklet.pdf#page=20
     - title: Ohio Income Tax Form 2023 Instructions (line 9)
       href: https://dam.assets.ohio.gov/image/upload/tax.ohio.gov/forms/ohio_individual/individual/2023/it1040-sd100-instructionbooklet.pdf#page=28
     - title: Ohio Income Tax Form 2024 Instructions (line 9)
       href: https://dam.assets.ohio.gov/image/upload/v1735920104/tax.ohio.gov/forms/ohio_individual/individual/2024/it1040-booklet.pdf#page=29
+    - title: Ohio Income Tax Form 2025 Instructions (Page 29)
+      href: https://dam.assets.ohio.gov/image/upload/v1767095693/tax.ohio.gov/forms/ohio_individual/individual/2025/it1040-booklet.pdf#page=29
diff --git a/policyengine_us/parameters/gov/states/oh/tax/income/credits/joint_filing/agi_subtractions.yaml b/policyengine_us/parameters/gov/states/oh/tax/income/credits/joint_filing/agi_subtractions.yaml
index 00fa41e567b..aa8eec860d0 100644
--- a/policyengine_us/parameters/gov/states/oh/tax/income/credits/joint_filing/agi_subtractions.yaml
+++ b/policyengine_us/parameters/gov/states/oh/tax/income/credits/joint_filing/agi_subtractions.yaml
@@ -5,6 +5,8 @@ metadata:
   period: year
   label: Ohio joint filing credit adjusted gross income subtractions
   reference:
+  - title: Ohio Revised Code Section 5747.05(E)(1), Tax credits
+    href: https://codes.ohio.gov/ohio-revised-code/section-5747.05
   - title: 2021 Ohio IT 1040 Individual Income Tax Return Form Instructions Line 12
     href: https://tax.ohio.gov/static/forms/ohio_individual/individual/2021/pit-it1040-booklet.pdf#page=20
   - title: 2022 Ohio IT 1040 Individual Income Tax Return Form Instructions Line 12
@@ -13,8 +15,8 @@ metadata:
     href: https://dam.assets.ohio.gov/image/upload/tax.ohio.gov/forms/ohio_individual/individual/2023/it1040-sd100-instructionbooklet.pdf#page=29
   - title: Ohio Income Tax Form 2024 Instructions (line 12)
     href: https://dam.assets.ohio.gov/image/upload/v1735920104/tax.ohio.gov/forms/ohio_individual/individual/2024/it1040-booklet.pdf#page=29
-  - title: Ohio Revised Code - Section 5747.05 Tax credits. (E) (1)
-    href: https://law.justia.com/codes/ohio/2022/title-57/chapter-5747/section-5747-05/
+  - title: Ohio Income Tax Form 2025 Instructions (Page 29)
+    href: https://dam.assets.ohio.gov/image/upload/v1767095693/tax.ohio.gov/forms/ohio_individual/individual/2025/it1040-booklet.pdf#page=29
   
 
 values:
diff --git a/policyengine_us/parameters/gov/states/oh/tax/income/credits/joint_filing/cap.yaml b/policyengine_us/parameters/gov/states/oh/tax/income/credits/joint_filing/cap.yaml
index 0998ce00b5c..b842c83e933 100644
--- a/policyengine_us/parameters/gov/states/oh/tax/income/credits/joint_filing/cap.yaml
+++ b/policyengine_us/parameters/gov/states/oh/tax/income/credits/joint_filing/cap.yaml
@@ -7,6 +7,8 @@ metadata:
   unit: currency-USD
   label: Ohio joint filing credit cap
   reference:
+  - title: Ohio Revised Code Section 5747.05(E)(1), Tax credits
+    href: https://codes.ohio.gov/ohio-revised-code/section-5747.05
   - title: 2021 Ohio IT 1040 Individual Income Tax Return Form Instructions Line 12
     href: https://tax.ohio.gov/static/forms/ohio_individual/individual/2021/pit-it1040-booklet.pdf#page=20
   - title: 2022 Ohio IT 1040 Individual Income Tax Return Form Instructions Line 12
@@ -15,5 +17,5 @@ metadata:
     href: https://dam.assets.ohio.gov/image/upload/tax.ohio.gov/forms/ohio_individual/individual/2023/it1040-sd100-instructionbooklet.pdf#page=30
   - title: Ohio Income Tax Form 2024 Instructions (line 12)
     href: https://dam.assets.ohio.gov/image/upload/v1735920104/tax.ohio.gov/forms/ohio_individual/individual/2024/it1040-booklet.pdf#page=29
-  - title: Ohio Revised Code - Section 5747.05 Tax credits. (E) (1)
-    href: https://codes.ohio.gov/ohio-revised-code/section-5747.05
+  - title: Ohio Income Tax Form 2025 Instructions (Page 29)
+    href: https://dam.assets.ohio.gov/image/upload/v1767095693/tax.ohio.gov/forms/ohio_individual/individual/2025/it1040-booklet.pdf#page=29
diff --git a/policyengine_us/parameters/gov/states/oh/tax/income/credits/joint_filing/income_threshold.yaml b/policyengine_us/parameters/gov/states/oh/tax/income/credits/joint_filing/income_threshold.yaml
index 2aca85ab5e5..9c3ea9b90eb 100644
--- a/policyengine_us/parameters/gov/states/oh/tax/income/credits/joint_filing/income_threshold.yaml
+++ b/policyengine_us/parameters/gov/states/oh/tax/income/credits/joint_filing/income_threshold.yaml
@@ -1,4 +1,4 @@
-description: Ohio limits the joint filing credit to filers with head and spouse each having at least this adjusted gross income. 
+description: Ohio limits the joint filing credit to filers with head and spouse each having at least this adjusted gross income.
 values:
   2021-01-01: 500
 
@@ -7,6 +7,8 @@ metadata:
   unit: currency-USD
   label: Ohio joint filing credit income threshold
   reference:
+  - title: Ohio Revised Code Section 5747.05(E)(1), Tax credits
+    href: https://codes.ohio.gov/ohio-revised-code/section-5747.05
   - title: 2021 Ohio IT 1040 Individual Income Tax Return Form Instructions Line 12
     href: https://tax.ohio.gov/static/forms/ohio_individual/individual/2021/pit-it1040-booklet.pdf#page=20
   - title: 2022 Ohio IT 1040 Individual Income Tax Return Form Instructions Line 12
@@ -15,5 +17,5 @@ metadata:
     href: https://dam.assets.ohio.gov/image/upload/tax.ohio.gov/forms/ohio_individual/individual/2023/it1040-sd100-instructionbooklet.pdf#page=29
   - title: Ohio Income Tax Form 2024 Instructions (line 12)
     href: https://dam.assets.ohio.gov/image/upload/v1735920104/tax.ohio.gov/forms/ohio_individual/individual/2024/it1040-booklet.pdf#page=29
-  - title: Ohio Revised Code - Section 5747.05 Tax credits. (E) (1)
-    href: https://codes.ohio.gov/ohio-revised-code/section-5747.05
+  - title: Ohio Income Tax Form 2025 Instructions (Page 29)
+    href: https://dam.assets.ohio.gov/image/upload/v1767095693/tax.ohio.gov/forms/ohio_individual/individual/2025/it1040-booklet.pdf#page=29
diff --git a/policyengine_us/parameters/gov/states/oh/tax/income/credits/joint_filing/other_non_refundable_credits.yaml b/policyengine_us/parameters/gov/states/oh/tax/income/credits/joint_filing/other_non_refundable_credits.yaml
index 7128b6678d4..90ef2f3087b 100644
--- a/policyengine_us/parameters/gov/states/oh/tax/income/credits/joint_filing/other_non_refundable_credits.yaml
+++ b/policyengine_us/parameters/gov/states/oh/tax/income/credits/joint_filing/other_non_refundable_credits.yaml
@@ -18,3 +18,5 @@ metadata:
       href: https://dam.assets.ohio.gov/image/upload/tax.ohio.gov/forms/ohio_individual/individual/2023/1040-bundle-original.pdf#page=7
     - title: 2024 Ohio Schedule of Credits Instructions
       href: https://dam.assets.ohio.gov/image/upload/v1735920104/tax.ohio.gov/forms/ohio_individual/individual/2024/it1040-booklet.pdf#page=28
+    - title: Ohio Income Tax Form 2025 Instructions (Page 28)
+      href: https://dam.assets.ohio.gov/image/upload/v1767095693/tax.ohio.gov/forms/ohio_individual/individual/2025/it1040-booklet.pdf#page=28
diff --git a/policyengine_us/parameters/gov/states/oh/tax/income/credits/joint_filing/rate.yaml b/policyengine_us/parameters/gov/states/oh/tax/income/credits/joint_filing/rate.yaml
index 8b53300e2b4..5c9713597ca 100644
--- a/policyengine_us/parameters/gov/states/oh/tax/income/credits/joint_filing/rate.yaml
+++ b/policyengine_us/parameters/gov/states/oh/tax/income/credits/joint_filing/rate.yaml
@@ -4,8 +4,10 @@ metadata:
   amount_unit: /1
   type: single_amount
   period: year
-  label: Ohio joint filing credit income rate 
+  label: Ohio joint filing credit income rate
   reference:
+  - title: Ohio Revised Code Section 5747.05(E), Tax credits
+    href: https://codes.ohio.gov/ohio-revised-code/section-5747.05
   - title: 2021 Ohio IT 1040 Individual Income Tax Return Form Instructions Line 12
     href: https://tax.ohio.gov/static/forms/ohio_individual/individual/2021/pit-it1040-booklet.pdf#page=20
   - title: 2022 Ohio IT 1040 Individual Income Tax Return Form Instructions Line 12
@@ -14,8 +16,8 @@ metadata:
     href: https://dam.assets.ohio.gov/image/upload/tax.ohio.gov/forms/ohio_individual/individual/2023/it1040-sd100-instructionbooklet.pdf#page=30
   - title: Ohio Income Tax Form 2024 Instructions (line 12)
     href: https://dam.assets.ohio.gov/image/upload/v1735920104/tax.ohio.gov/forms/ohio_individual/individual/2024/it1040-booklet.pdf#page=29
-  - title: Ohio Revised Code - Section 5747.05 Tax credits. (E) 
-    href: https://codes.ohio.gov/ohio-revised-code/section-5747.05
+  - title: Ohio Income Tax Form 2025 Instructions (Page 29)
+    href: https://dam.assets.ohio.gov/image/upload/v1767095693/tax.ohio.gov/forms/ohio_individual/individual/2025/it1040-booklet.pdf#page=29
 
 brackets:
  - threshold: 
diff --git a/policyengine_us/parameters/gov/states/oh/tax/income/credits/lump_sum_distribution/age_threshold.yaml b/policyengine_us/parameters/gov/states/oh/tax/income/credits/lump_sum_distribution/age_threshold.yaml
index 59177713d92..e5519932ddf 100644
--- a/policyengine_us/parameters/gov/states/oh/tax/income/credits/lump_sum_distribution/age_threshold.yaml
+++ b/policyengine_us/parameters/gov/states/oh/tax/income/credits/lump_sum_distribution/age_threshold.yaml
@@ -6,9 +6,11 @@ metadata:
   period: year
   label: Ohio Lump Sum Distribution Credit age threshold
   reference:
-    - title: Ohio Section R.C. 5747.055, Tax credit for retirement income. (F)
+    - title: Ohio Revised Code Section 5747.055(F), Tax credit for retirement income
       href: https://codes.ohio.gov/ohio-revised-code/section-5747.055
-    - title: Ohio 2021 Instructions for Filing Original and Amended Individual Income Tax (IT 1040) and  School District Income Tax (SD 100)
+    - title: Ohio 2021 Instructions for Filing Original and Amended (line 5)
       href: https://tax.ohio.gov/static/forms/ohio_individual/individual/2021/pit-it1040-booklet.pdf#page=29
     - title: Ohio Income Tax Form 2024 Instructions (line 5)
       href: https://dam.assets.ohio.gov/image/upload/v1735920104/tax.ohio.gov/forms/ohio_individual/individual/2024/it1040-booklet.pdf#page=28
+    - title: Ohio Income Tax Form 2025 Instructions (Page 28)
+      href: https://dam.assets.ohio.gov/image/upload/v1767095693/tax.ohio.gov/forms/ohio_individual/individual/2025/it1040-booklet.pdf#page=28
diff --git a/policyengine_us/parameters/gov/states/oh/tax/income/credits/lump_sum_distribution/base_amount.yaml b/policyengine_us/parameters/gov/states/oh/tax/income/credits/lump_sum_distribution/base_amount.yaml
index 0c22ec60e0d..eab35edce95 100644
--- a/policyengine_us/parameters/gov/states/oh/tax/income/credits/lump_sum_distribution/base_amount.yaml
+++ b/policyengine_us/parameters/gov/states/oh/tax/income/credits/lump_sum_distribution/base_amount.yaml
@@ -4,14 +4,16 @@ values:
 metadata:
   unit: currency-USD
   period: year
-  label: Ohio lump sum distribution credit base amount 
+  label: Ohio lump sum distribution credit base amount
   reference:
-    - title: Ohio Section R.C. 5747.055, Tax credit for retirement income. (F)
+    - title: Ohio Revised Code Section 5747.055(F), Tax credit for retirement income
       href: https://codes.ohio.gov/ohio-revised-code/section-5747.055
-    - title:  Ohio 2021 Instructions for Filing Original and Amended Individual Income Tax (IT 1040) and  School District Income Tax (SD 100)
+    - title: Ohio 2021 Instructions for Filing Original and Amended (line 5)
       href: https://tax.ohio.gov/static/forms/ohio_individual/individual/2021/pit-it1040-booklet.pdf#page=29
     - title: Ohio Income Tax Form 2023 Instructions (line 5)
       href: https://dam.assets.ohio.gov/image/upload/tax.ohio.gov/forms/ohio_individual/individual/2023/it1040-sd100-instructionbooklet.pdf#page=28
     - title: Ohio Income Tax Form 2024 Instructions (line 5)
       href: https://dam.assets.ohio.gov/image/upload/v1735920104/tax.ohio.gov/forms/ohio_individual/individual/2024/it1040-booklet.pdf#page=28
+    - title: Ohio Income Tax Form 2025 Instructions (Page 28)
+      href: https://dam.assets.ohio.gov/image/upload/v1767095693/tax.ohio.gov/forms/ohio_individual/individual/2025/it1040-booklet.pdf#page=28
       
diff --git a/policyengine_us/parameters/gov/states/oh/tax/income/credits/lump_sum_distribution/expected_remaining_years.yaml b/policyengine_us/parameters/gov/states/oh/tax/income/credits/lump_sum_distribution/expected_remaining_years.yaml
index 2766909c0f2..34c246a3022 100644
--- a/policyengine_us/parameters/gov/states/oh/tax/income/credits/lump_sum_distribution/expected_remaining_years.yaml
+++ b/policyengine_us/parameters/gov/states/oh/tax/income/credits/lump_sum_distribution/expected_remaining_years.yaml
@@ -1,17 +1,21 @@
-description: Ohio provides the following multiples corresponding to the lump sum recipient’s age. 
+description: Ohio provides the following multiples corresponding to the lump sum recipient's age.
 metadata:
-  type: single_amount 
+  type: single_amount
   threshold_unit: year
   period: year
   amount_unit: /1
-  label:  Ohio lump sum distribution credit expected remaining years of life
+  label: Ohio lump sum distribution credit expected remaining years of life
   reference:
-    - title:  Ohio 2021 Instructions for Filing Original and Amended Individual Income Tax (IT 1040) and  School District Income Tax (SD 100)
+    - title: Ohio Revised Code Section 5747.055(F), Tax credit for retirement income
+      href: https://codes.ohio.gov/ohio-revised-code/section-5747.055
+    - title: Ohio 2021 Instructions for Filing Original and Amended (line 5)
       href: https://tax.ohio.gov/static/forms/ohio_individual/individual/2021/pit-it1040-booklet.pdf#page=29
-    - title: Ohio 2022 Instructions for Filing Original and Amended Individual Income Tax (IT 1040) and  School District Income Tax (SD 100)
+    - title: Ohio 2022 Instructions for Filing Original and Amended (line 5)
       href: https://tax.ohio.gov/static/forms/ohio_individual/individual/2022/it1040-sd100-instruction-booklet.pdf#page=29
     - title: Ohio Income Tax Form 2024 Instructions (line 5) Table 1
       href: https://dam.assets.ohio.gov/image/upload/v1735920104/tax.ohio.gov/forms/ohio_individual/individual/2024/it1040-booklet.pdf#page=44
+    - title: Ohio Income Tax Form 2025 Instructions (Page 44)
+      href: https://dam.assets.ohio.gov/image/upload/v1767095693/tax.ohio.gov/forms/ohio_individual/individual/2025/it1040-booklet.pdf#page=44
 brackets:
   - threshold:
       2021-01-01: 0
diff --git a/policyengine_us/parameters/gov/states/oh/tax/income/credits/lump_sum_distribution/income_limit.yaml b/policyengine_us/parameters/gov/states/oh/tax/income/credits/lump_sum_distribution/income_limit.yaml
index 19ce5293ea4..0b78a33875d 100644
--- a/policyengine_us/parameters/gov/states/oh/tax/income/credits/lump_sum_distribution/income_limit.yaml
+++ b/policyengine_us/parameters/gov/states/oh/tax/income/credits/lump_sum_distribution/income_limit.yaml
@@ -6,9 +6,11 @@ metadata:
   period: year
   label: Ohio lump sum distribution credit income limit
   reference:
-    - title: Ohio Laws and Administrative Rules Section 5747.055 (G)
-      href: https://codes.ohio.gov/ohio-revised-code/section-5747.055#:~:text=(G)%20A%20taxpayer%20sixty%2D,Code%2C%20as%20shown%20on%20an
+    - title: Ohio Revised Code Section 5747.055(G)
+      href: https://codes.ohio.gov/ohio-revised-code/section-5747.055
     - title: Ohio Income Tax Form 2023 Instructions (line 2)
       href: https://dam.assets.ohio.gov/image/upload/tax.ohio.gov/forms/ohio_individual/individual/2023/it1040-sd100-instructionbooklet.pdf#page=27
     - title: Ohio Income Tax Form 2024 Instructions (line 5)
       href: https://dam.assets.ohio.gov/image/upload/v1735920104/tax.ohio.gov/forms/ohio_individual/individual/2024/it1040-booklet.pdf#page=28
+    - title: Ohio Income Tax Form 2025 Instructions (Page 28)
+      href: https://dam.assets.ohio.gov/image/upload/v1767095693/tax.ohio.gov/forms/ohio_individual/individual/2025/it1040-booklet.pdf#page=28
diff --git a/policyengine_us/parameters/gov/states/oh/tax/income/credits/non_public_tuition.yaml b/policyengine_us/parameters/gov/states/oh/tax/income/credits/non_public_tuition.yaml
index c131c144cae..50217b46020 100644
--- a/policyengine_us/parameters/gov/states/oh/tax/income/credits/non_public_tuition.yaml
+++ b/policyengine_us/parameters/gov/states/oh/tax/income/credits/non_public_tuition.yaml
@@ -5,7 +5,7 @@ brackets:
     amount:
       2021-01-01: 500
       2023-01-01: 1_000
-  - threshold: 
+  - threshold:
       2021-01-01: 50_000
     amount:
       2021-01-01: 1_000
@@ -23,7 +23,9 @@ metadata:
   type: single_amount
   label: Ohio Non Public School Credit amount
   reference:
-    - title: Ohio Income Tax Form, Line 16 – Nonchartered, Nonpublic School Tuition Credit, R.C. 5747.75
+    - title: Ohio Revised Code Section 5747.75, Credit for dependents who attend nonchartered nonpublic school
+      href: https://codes.ohio.gov/ohio-revised-code/section-5747.75
+    - title: Ohio Income Tax Form 2021, Line 16
       href: https://tax.ohio.gov/static/forms/ohio_individual/individual/2021/pit-it1040-booklet.pdf#page=21
     - title: Ohio Income Tax Form 2022, Line 16
       href: https://tax.ohio.gov/static/forms/ohio_individual/individual/2022/it1040-sd100-instruction-booklet.pdf#page=21
@@ -31,6 +33,6 @@ metadata:
       href: https://dam.assets.ohio.gov/image/upload/tax.ohio.gov/forms/ohio_individual/individual/2023/it1040-sd100-instructionbooklet.pdf#page=29
     - title: Ohio Income Tax Form 2024 Instructions Ohio Schedule of Credits (line 16)
       href: https://dam.assets.ohio.gov/image/upload/v1735920104/tax.ohio.gov/forms/ohio_individual/individual/2024/it1040-booklet.pdf#page=30
-    - title: Credit for dependents who attend nonchartered nonpublic school.
-      href: https://codes.ohio.gov/ohio-revised-code/section-5747.75
+    - title: Ohio Income Tax Form 2025 Instructions (Page 30)
+      href: https://dam.assets.ohio.gov/image/upload/v1767095693/tax.ohio.gov/forms/ohio_individual/individual/2025/it1040-booklet.pdf#page=30
 
diff --git a/policyengine_us/parameters/gov/states/oh/tax/income/credits/non_refundable.yaml b/policyengine_us/parameters/gov/states/oh/tax/income/credits/non_refundable.yaml
index 3971b0ad510..a9449f35656 100644
--- a/policyengine_us/parameters/gov/states/oh/tax/income/credits/non_refundable.yaml
+++ b/policyengine_us/parameters/gov/states/oh/tax/income/credits/non_refundable.yaml
@@ -15,7 +15,7 @@ values:
     - oh_senior_citizen_credit
     - oh_retirement_credit
     - oh_non_public_school_credits
-    - oh_exemption_credit   
+    - oh_exemption_credit
     - oh_joint_filing_credit
 metadata:
   unit: list
@@ -30,3 +30,5 @@ metadata:
       href: https://dam.assets.ohio.gov/image/upload/tax.ohio.gov/forms/ohio_individual/individual/2023/1040-bundle-original.pdf#page=7
     - title: 2024 Ohio Tax Form 1040 (Schedule of Credits, Sequence 7)
       href: https://tax.ohio.gov/static/webview/view1/UIExtension/1/pdf-view.html?filename=forms/ohio_individual/individual/2024/1040-bundle-original-fi.pdf
+    - title: Ohio Income Tax Form 2025 Instructions (Page 28)
+      href: https://dam.assets.ohio.gov/image/upload/v1767095693/tax.ohio.gov/forms/ohio_individual/individual/2025/it1040-booklet.pdf#page=28
diff --git a/policyengine_us/parameters/gov/states/oh/tax/income/credits/retirement/lump_sum/age_threshold.yaml b/policyengine_us/parameters/gov/states/oh/tax/income/credits/retirement/lump_sum/age_threshold.yaml
index bbbef606350..acbabad6a92 100644
--- a/policyengine_us/parameters/gov/states/oh/tax/income/credits/retirement/lump_sum/age_threshold.yaml
+++ b/policyengine_us/parameters/gov/states/oh/tax/income/credits/retirement/lump_sum/age_threshold.yaml
@@ -6,9 +6,11 @@ metadata:
   period: year
   label: Ohio lump sum retirement income credit age threshold
   reference:
-    - title: Ohio Section R.C. 5747.055, Tax credit for retirement income. (F)
+    - title: Ohio Revised Code Section 5747.055(F), Tax credit for retirement income
       href: https://codes.ohio.gov/ohio-revised-code/section-5747.055
-    - title: Ohio Income Tax Form Lump Sum Retirement Credit Worksheet (Ohio Schedule of Credits, Line 3)
+    - title: Ohio Income Tax Form 2021 Lump Sum Retirement Credit Worksheet (line 3)
       href: https://tax.ohio.gov/static/forms/ohio_individual/individual/2021/pit-it1040-booklet.pdf#page=29
     - title: Ohio Income Tax Form 2024 Instructions Ohio Schedule of Credits (line 3)
       href: https://dam.assets.ohio.gov/image/upload/v1735920104/tax.ohio.gov/forms/ohio_individual/individual/2024/it1040-booklet.pdf#page=28
+    - title: Ohio Income Tax Form 2025 Instructions (Page 28)
+      href: https://dam.assets.ohio.gov/image/upload/v1767095693/tax.ohio.gov/forms/ohio_individual/individual/2025/it1040-booklet.pdf#page=28
diff --git a/policyengine_us/parameters/gov/states/oh/tax/income/credits/retirement/lump_sum/divisor.yaml b/policyengine_us/parameters/gov/states/oh/tax/income/credits/retirement/lump_sum/divisor.yaml
index d5cf79d325c..390a8bdfff2 100644
--- a/policyengine_us/parameters/gov/states/oh/tax/income/credits/retirement/lump_sum/divisor.yaml
+++ b/policyengine_us/parameters/gov/states/oh/tax/income/credits/retirement/lump_sum/divisor.yaml
@@ -258,13 +258,15 @@ metadata:
   type: single_amount
   label: Ohio lump sum retirement credit divisor
   reference:
-    - title: Ohio Income Tax Form Lump Sum Retirement Credit Worksheet (Ohio Schedule of Credits, Line 3)
+    - title: Ohio Revised Code Section 5747.055(C), (D), and (E)
+      href: https://codes.ohio.gov/ohio-revised-code/section-5747.055
+    - title: Ohio Income Tax Form 2021 Lump Sum Retirement Credit Worksheet (line 3)
       href: https://tax.ohio.gov/static/forms/ohio_individual/individual/2021/pit-it1040-booklet.pdf#page=29
-    - title: Ohio 2022 Instructions for Filing Original and Amended - Line 3 – Lump Sum Retirement Credit R.C. 5747.055(C) & (D) & (E).
+    - title: Ohio 2022 Instructions for Filing Original and Amended - Line 3
       href: https://tax.ohio.gov/static/forms/ohio_individual/individual/2022/it1040-sd100-instruction-booklet.pdf#page=20
     - title: Ohio Income Tax Form 2023 Instructions (Table 1)
       href: https://dam.assets.ohio.gov/image/upload/tax.ohio.gov/forms/ohio_individual/individual/2023/it1040-sd100-instructionbooklet.pdf#page=43
-    - title: Ohio Income Tax Form 2024  Instructions (Table 1)
+    - title: Ohio Income Tax Form 2024 Instructions (Table 1)
       href: https://dam.assets.ohio.gov/image/upload/v1735920104/tax.ohio.gov/forms/ohio_individual/individual/2024/it1040-booklet.pdf#page=44
-    - title: Ohio Revised Code, Title 57 Taxation, Chapter 5747 Income Tax, Section 5747.055(C), (D), and (E).
-      href: https://codes.ohio.gov/ohio-revised-code/section-5747.055
+    - title: Ohio Income Tax Form 2025 Instructions (Page 44)
+      href: https://dam.assets.ohio.gov/image/upload/v1767095693/tax.ohio.gov/forms/ohio_individual/individual/2025/it1040-booklet.pdf#page=44
diff --git a/policyengine_us/parameters/gov/states/oh/tax/income/credits/retirement/lump_sum/income_limit.yaml b/policyengine_us/parameters/gov/states/oh/tax/income/credits/retirement/lump_sum/income_limit.yaml
index e90c3f535f5..ce17cf651fd 100644
--- a/policyengine_us/parameters/gov/states/oh/tax/income/credits/retirement/lump_sum/income_limit.yaml
+++ b/policyengine_us/parameters/gov/states/oh/tax/income/credits/retirement/lump_sum/income_limit.yaml
@@ -6,13 +6,15 @@ metadata:
   period: year
   label: Ohio lump sum retirement income credit retirement credit income limit
   reference:
-    - title: Ohio 2021 Instructions for Filing Original and Amended - Line 2 – Retirement Credit R.C. 5747.055(B)
-      href: https://tax.ohio.gov/static/forms/ohio_individual/individual/2021/pit-it1040-booklet.pdf#page=20
-    - title: Ohio Revised Code, Title 57 Taxation, Chapter 5747 Income Tax, Section 5747.055 (C)
+    - title: Ohio Revised Code Section 5747.055(C), Tax credit for retirement income
       href: https://codes.ohio.gov/ohio-revised-code/section-5747.055
-    - title: Ohio 2022 Instructions for Filing Original and Amended - Line 2 – Retirement Income Credit R.C. 5747.055(B)
+    - title: Ohio 2021 Instructions for Filing Original and Amended - Line 2
+      href: https://tax.ohio.gov/static/forms/ohio_individual/individual/2021/pit-it1040-booklet.pdf#page=20
+    - title: Ohio 2022 Instructions for Filing Original and Amended - Line 2
       href: https://tax.ohio.gov/static/forms/ohio_individual/individual/2022/it1040-sd100-instruction-booklet.pdf#page=20
     - title: Ohio Income Tax Form 2023 Instructions (line 2)
       href: https://dam.assets.ohio.gov/image/upload/tax.ohio.gov/forms/ohio_individual/individual/2023/it1040-sd100-instructionbooklet.pdf#page=27
     - title: Ohio Income Tax Form 2024 Instructions Ohio Schedule of Credits (line 3)
       href: https://dam.assets.ohio.gov/image/upload/v1735920104/tax.ohio.gov/forms/ohio_individual/individual/2024/it1040-booklet.pdf#page=28
+    - title: Ohio Income Tax Form 2025 Instructions (Page 28)
+      href: https://dam.assets.ohio.gov/image/upload/v1767095693/tax.ohio.gov/forms/ohio_individual/individual/2025/it1040-booklet.pdf#page=28
diff --git a/policyengine_us/parameters/gov/states/oh/tax/income/credits/retirement/pension_based/amount.yaml b/policyengine_us/parameters/gov/states/oh/tax/income/credits/retirement/pension_based/amount.yaml
index 2c2dd76d535..680a992dac4 100644
--- a/policyengine_us/parameters/gov/states/oh/tax/income/credits/retirement/pension_based/amount.yaml
+++ b/policyengine_us/parameters/gov/states/oh/tax/income/credits/retirement/pension_based/amount.yaml
@@ -30,13 +30,15 @@ metadata:
   type: single_amount
   label: Ohio pension based retirement income credit amount
   reference:
-    - title: Ohio Income Tax Form Lump Sum Retirement Credit Worksheet Table 2
+    - title: Ohio Revised Code Section 5747.055(B), Tax credit for retirement income
+      href: https://codes.ohio.gov/ohio-revised-code/section-5747.055
+    - title: Ohio Income Tax Form 2021 Lump Sum Retirement Credit Worksheet Table 2
       href: https://tax.ohio.gov/static/forms/ohio_individual/individual/2021/pit-it1040-booklet.pdf#page=29
-    - title: Ohio 2022 Instructions for Filing Original and Amended - Line 2 – Retirement Income Credit R.C. 5747.055(B)
+    - title: Ohio 2022 Instructions for Filing Original and Amended - Line 2
       href: https://tax.ohio.gov/static/forms/ohio_individual/individual/2022/it1040-sd100-instruction-booklet.pdf#page=20
     - title: Ohio Income Tax Form 2023 Instructions (Table 2)
       href: https://dam.assets.ohio.gov/image/upload/tax.ohio.gov/forms/ohio_individual/individual/2023/it1040-sd100-instructionbooklet.pdf#page=43
-    - title: Ohio Income Tax Form 2024 Instructions (table 2)
+    - title: Ohio Income Tax Form 2024 Instructions (Table 2)
       href: https://dam.assets.ohio.gov/image/upload/v1735920104/tax.ohio.gov/forms/ohio_individual/individual/2024/it1040-booklet.pdf#page=44
-    - title: Ohio Revised Code, Title 57 Taxation, Chapter 5747 Income Tax, Section 5747.055(B), Tax credit for retirement income
-      href: https://codes.ohio.gov/ohio-revised-code/section-5747.055
+    - title: Ohio Income Tax Form 2025 Instructions (Page 44)
+      href: https://dam.assets.ohio.gov/image/upload/v1767095693/tax.ohio.gov/forms/ohio_individual/individual/2025/it1040-booklet.pdf#page=44
diff --git a/policyengine_us/parameters/gov/states/oh/tax/income/credits/retirement/pension_based/income_limit.yaml b/policyengine_us/parameters/gov/states/oh/tax/income/credits/retirement/pension_based/income_limit.yaml
index 40451a839ba..1a0d46cd140 100644
--- a/policyengine_us/parameters/gov/states/oh/tax/income/credits/retirement/pension_based/income_limit.yaml
+++ b/policyengine_us/parameters/gov/states/oh/tax/income/credits/retirement/pension_based/income_limit.yaml
@@ -6,13 +6,15 @@ metadata:
   period: year
   label: Ohio pension based retirement income credit retirement credit income limit
   reference:
-    - title: Ohio 2021 Instructions for Filing Original and Amended - Line 2 – Retirement Credit R.C. 5747.055(B)
-      href: https://tax.ohio.gov/static/forms/ohio_individual/individual/2021/pit-it1040-booklet.pdf#page=20
-    - title: Ohio Revised Code, Title 57 Taxation, Chapter 5747 Income Tax, Section 5747.055(B), Tax credit for retirement income
+    - title: Ohio Revised Code Section 5747.055(B), Tax credit for retirement income
       href: https://codes.ohio.gov/ohio-revised-code/section-5747.055
-    - title: Ohio 2022 Instructions for Filing Original and Amended - Line 2 – Retirement Income Credit R.C. 5747.055(B)
+    - title: Ohio 2021 Instructions for Filing Original and Amended - Line 2
+      href: https://tax.ohio.gov/static/forms/ohio_individual/individual/2021/pit-it1040-booklet.pdf#page=20
+    - title: Ohio 2022 Instructions for Filing Original and Amended - Line 2
       href: https://tax.ohio.gov/static/forms/ohio_individual/individual/2022/it1040-sd100-instruction-booklet.pdf#page=20
     - title: Ohio Income Tax Form 2023 Instructions (line 2)
       href: https://dam.assets.ohio.gov/image/upload/tax.ohio.gov/forms/ohio_individual/individual/2023/it1040-sd100-instructionbooklet.pdf#page=27
     - title: Ohio Income Tax Form 2024 Instructions Ohio Schedule of Credits (line 2)
       href: https://dam.assets.ohio.gov/image/upload/v1735920104/tax.ohio.gov/forms/ohio_individual/individual/2024/it1040-booklet.pdf#page=28
+    - title: Ohio Income Tax Form 2025 Instructions (Page 28)
+      href: https://dam.assets.ohio.gov/image/upload/v1767095693/tax.ohio.gov/forms/ohio_individual/individual/2025/it1040-booklet.pdf#page=28
diff --git a/policyengine_us/parameters/gov/states/oh/tax/income/credits/senior_citizen/age_threshold.yaml b/policyengine_us/parameters/gov/states/oh/tax/income/credits/senior_citizen/age_threshold.yaml
index a62dd86471b..aaca75dc5bf 100644
--- a/policyengine_us/parameters/gov/states/oh/tax/income/credits/senior_citizen/age_threshold.yaml
+++ b/policyengine_us/parameters/gov/states/oh/tax/income/credits/senior_citizen/age_threshold.yaml
@@ -6,7 +6,9 @@ metadata:
   period: year
   label: Ohio Senior Citizen Credit age threshold
   reference:
-    - title: Ohio 2021 Instructions for Filing Original and Amended - Line 4 – Senior Citizen Credit R.C. 5747.055(F)
+    - title: Ohio Revised Code Section 5747.055(F), Tax credit for retirement income
+      href: https://codes.ohio.gov/ohio-revised-code/section-5747.055
+    - title: Ohio 2021 Instructions for Filing Original and Amended - Line 4
       href: https://tax.ohio.gov/static/forms/ohio_individual/individual/2021/pit-it1040-booklet.pdf#page=20
     - title: Ohio Income Tax Form 2022 Instructions (line 4)
       href: https://dam.assets.ohio.gov/image/upload/tax.ohio.gov/forms/ohio_individual/individual/2022/it1040-sd100-instruction-booklet.pdf#page=20
@@ -14,5 +16,5 @@ metadata:
       href: https://dam.assets.ohio.gov/image/upload/tax.ohio.gov/forms/ohio_individual/individual/2023/it1040-sd100-instructionbooklet.pdf#page=27
     - title: Ohio Income Tax Form 2024 Instructions Ohio Schedule of Credits (line 4)
       href: https://dam.assets.ohio.gov/image/upload/v1735920104/tax.ohio.gov/forms/ohio_individual/individual/2024/it1040-booklet.pdf#page=28
-    - title: Ohio Section R.C. 5747.055(F), Tax credit for retirement income.
-      href: https://codes.ohio.gov/ohio-revised-code/section-5747.055
+    - title: Ohio Income Tax Form 2025 Instructions (Page 28)
+      href: https://dam.assets.ohio.gov/image/upload/v1767095693/tax.ohio.gov/forms/ohio_individual/individual/2025/it1040-booklet.pdf#page=28
diff --git a/policyengine_us/parameters/gov/states/oh/tax/income/credits/senior_citizen/amount.yaml b/policyengine_us/parameters/gov/states/oh/tax/income/credits/senior_citizen/amount.yaml
index 69c8e6def1e..f6792696f22 100644
--- a/policyengine_us/parameters/gov/states/oh/tax/income/credits/senior_citizen/amount.yaml
+++ b/policyengine_us/parameters/gov/states/oh/tax/income/credits/senior_citizen/amount.yaml
@@ -15,7 +15,9 @@ metadata:
   type: single_amount
   label: Ohio senior citizen credit amount
   reference:
-    - title: Ohio 2021 Instructions for Filing Original and Amended - Line 4 – Senior Citizen Credit
+    - title: Ohio Revised Code Section 5747.055(F), Tax credit for retirement income
+      href: https://codes.ohio.gov/ohio-revised-code/section-5747.055
+    - title: Ohio 2021 Instructions for Filing Original and Amended - Line 4
       href: https://tax.ohio.gov/static/forms/ohio_individual/individual/2021/pit-it1040-booklet.pdf#page=20
     - title: Ohio Income Tax Form 2022 Instructions (line 4)
       href: https://dam.assets.ohio.gov/image/upload/tax.ohio.gov/forms/ohio_individual/individual/2022/it1040-sd100-instruction-booklet.pdf#page=20
@@ -23,5 +25,5 @@ metadata:
       href: https://dam.assets.ohio.gov/image/upload/tax.ohio.gov/forms/ohio_individual/individual/2023/it1040-sd100-instructionbooklet.pdf#page=27
     - title: Ohio Income Tax Form 2024 Instructions Ohio Schedule of Credits (line 4)
       href: https://dam.assets.ohio.gov/image/upload/v1735920104/tax.ohio.gov/forms/ohio_individual/individual/2024/it1040-booklet.pdf#page=28
-    - title: Ohio Section R.C. 5747.055(F), Tax credit for retirement income.
-      href: https://codes.ohio.gov/ohio-revised-code/section-5747.055
+    - title: Ohio Income Tax Form 2025 Instructions (Page 28)
+      href: https://dam.assets.ohio.gov/image/upload/v1767095693/tax.ohio.gov/forms/ohio_individual/individual/2025/it1040-booklet.pdf#page=28
diff --git a/policyengine_us/parameters/gov/states/oh/tax/income/deductions/deductions.yaml b/policyengine_us/parameters/gov/states/oh/tax/income/deductions/deductions.yaml
index 5f7d5bf5c81..e5bb66d57fa 100644
--- a/policyengine_us/parameters/gov/states/oh/tax/income/deductions/deductions.yaml
+++ b/policyengine_us/parameters/gov/states/oh/tax/income/deductions/deductions.yaml
@@ -9,19 +9,21 @@ values:
     - educator_expense
     - disability_benefits
     - oh_unreimbursed_medical_care_expense_deduction_person
-    
+
 metadata:
   unit: list
   period: year
   label: Ohio adjusted gross income deductions
   reference:
+    - title: Ohio Revised Code Section 5747.01
+      href: https://codes.ohio.gov/ohio-revised-code/section-5747.01
     - title: Ohio 2021 Instructions for Filing Original and Amended
       href: https://tax.ohio.gov/static/forms/ohio_individual/individual/2021/pit-it1040-booklet.pdf#page=16
-    - title: Ohio 2022 Tax Form 
+    - title: Ohio 2022 Tax Form
       href: https://tax.ohio.gov/static/forms/ohio_individual/individual/2022/it1040-sd100-instruction-booklet.pdf#page=16
     - title: Ohio 2023 Schedule of Adjustments
       href: https://dam.assets.ohio.gov/image/upload/tax.ohio.gov/forms/ohio_individual/individual/2023/1040-bundle-original.pdf#page=3
-    - title: Ohio Income Tax Form 2024 Instructions-  Schedule of Adjustments 
+    - title: Ohio Income Tax Form 2024 Instructions - Schedule of Adjustments
       href: https://dam.assets.ohio.gov/image/upload/v1735920104/tax.ohio.gov/forms/ohio_individual/individual/2024/it1040-booklet.pdf#page=19
-    - title: Ohio Revised Code, Title 57 Taxation, Chapter 5747 Income Tax, Section 5747.01
-      href: https://law.justia.com/codes/ohio/2022/title-57/chapter-5747/section-5747-01/
+    - title: Ohio Income Tax Form 2025 Instructions (Page 19)
+      href: https://dam.assets.ohio.gov/image/upload/v1767095693/tax.ohio.gov/forms/ohio_individual/individual/2025/it1040-booklet.pdf#page=19
diff --git a/policyengine_us/parameters/gov/states/oh/tax/income/deductions/plan_529_contributions/cap.yaml b/policyengine_us/parameters/gov/states/oh/tax/income/deductions/plan_529_contributions/cap.yaml
index 3615eaffe89..e0729ec74f3 100644
--- a/policyengine_us/parameters/gov/states/oh/tax/income/deductions/plan_529_contributions/cap.yaml
+++ b/policyengine_us/parameters/gov/states/oh/tax/income/deductions/plan_529_contributions/cap.yaml
@@ -6,13 +6,15 @@ metadata:
   period: year
   label: Ohio 529 plan contribution deduction cap
   reference:
-    - title: Ohio 2021 Instructions for Filing Original and Amended - Line 31 – Contributions to an Ohio 529 Plan R.C. 5747.01(A)(9)
-      href: https://tax.ohio.gov/static/forms/ohio_individual/individual/2021/pit-it1040-booklet.pdf#page=18
-    - title: Ohio Revised Code, Title 57 Taxation, Chapter 5747 Income Tax, Section 5747.01(A)(9)
+    - title: Ohio Revised Code Section 5747.01(A)(9)
       href: https://codes.ohio.gov/ohio-revised-code/section-5747.01
-    - title: Ohio 2022 Tax Form - Line 31 – Contributions to an Ohio 529 Plan
+    - title: Ohio 2021 Instructions for Filing Original and Amended - Line 31
+      href: https://tax.ohio.gov/static/forms/ohio_individual/individual/2021/pit-it1040-booklet.pdf#page=18
+    - title: Ohio 2022 Tax Form - Line 31
       href: https://tax.ohio.gov/static/forms/ohio_individual/individual/2022/it1040-sd100-instruction-booklet.pdf#page=18
     - title: Ohio Income Tax Form 2023 Instructions (line 31)
       href: https://dam.assets.ohio.gov/image/upload/tax.ohio.gov/forms/ohio_individual/individual/2023/it1040-sd100-instructionbooklet.pdf#page=18
-    - title: Ohio Income Tax Form 2024 Instructions Ohio Schedule of Credits (line 36)
+    - title: Ohio Income Tax Form 2024 Instructions (line 36)
       href: https://dam.assets.ohio.gov/image/upload/v1735920104/tax.ohio.gov/forms/ohio_individual/individual/2024/it1040-booklet.pdf#page=24
+    - title: Ohio Income Tax Form 2025 Instructions (Page 24)
+      href: https://dam.assets.ohio.gov/image/upload/v1767095693/tax.ohio.gov/forms/ohio_individual/individual/2025/it1040-booklet.pdf#page=24
diff --git a/policyengine_us/parameters/gov/states/oh/tax/income/deductions/unreimbursed_medical_care_expenses/rate.yaml b/policyengine_us/parameters/gov/states/oh/tax/income/deductions/unreimbursed_medical_care_expenses/rate.yaml
index 1468fc634ee..71fcbae41e2 100644
--- a/policyengine_us/parameters/gov/states/oh/tax/income/deductions/unreimbursed_medical_care_expenses/rate.yaml
+++ b/policyengine_us/parameters/gov/states/oh/tax/income/deductions/unreimbursed_medical_care_expenses/rate.yaml
@@ -6,15 +6,15 @@ metadata:
   period: year
   label: Ohio Unreimbursed Medical Care Expenses Deduction AGI threshold
   reference:
-    - title: Ohio Tax Form 2021 - Unreimbursed Medical Care Expenses Worksheet (Ohio Schedule of Adjustments, Line 36)
+    - title: Ohio Revised Code Section 5747.01(A)(10)(b)
+      href: https://codes.ohio.gov/ohio-revised-code/section-5747.01
+    - title: Ohio Tax Form 2021 - Unreimbursed Medical Care Expenses Worksheet
       href: https://tax.ohio.gov/static/forms/ohio_individual/individual/2021/pit-it1040-booklet.pdf#page=18
-    - title: Ohio Tax Form 2022 - Deductions Line 36 – Unreimbursed Medical & Health Care Expenses
+    - title: Ohio Tax Form 2022 - Deductions Line 36
       href: https://tax.ohio.gov/static/forms/ohio_individual/individual/2022/it1040-sd100-instruction-booklet.pdf#page=18
-    - title: Ohio Tax Form - Unreimbursed Medical Care Expenses Worksheet (Ohio Schedule of Adjustments, Line 36)
-      href: https://tax.ohio.gov/static/forms/ohio_individual/individual/2022/it1040-sd100-instruction-booklet.pdf#page=27
     - title: Ohio Income Tax Form 2023 Instructions (Unreimbursed Medical Care Expenses Worksheet)
       href: https://dam.assets.ohio.gov/image/upload/tax.ohio.gov/forms/ohio_individual/individual/2023/it1040-sd100-instructionbooklet.pdf#page=40
-    - title: Ohio Income Tax Form 2024 Instructions- Unreimbursed Medical Care Expenses Worksheet (Ohio Schedule of Adjustments, Line 43)
+    - title: Ohio Income Tax Form 2024 Instructions (Unreimbursed Medical Care Expenses Worksheet)
       href: https://dam.assets.ohio.gov/image/upload/v1735920104/tax.ohio.gov/forms/ohio_individual/individual/2024/it1040-booklet.pdf#page=25
-    - title: Ohio Revised Code Section 5747.01(A)(10)(b)
-      href: https://codes.ohio.gov/ohio-revised-code/section-5747.01
+    - title: Ohio Income Tax Form 2025 Instructions (Page 25)
+      href: https://dam.assets.ohio.gov/image/upload/v1767095693/tax.ohio.gov/forms/ohio_individual/individual/2025/it1040-booklet.pdf#page=25
diff --git a/policyengine_us/parameters/gov/states/oh/tax/income/exemptions/personal/amount.yaml b/policyengine_us/parameters/gov/states/oh/tax/income/exemptions/personal/amount.yaml
index 988a635504d..6df220ae853 100644
--- a/policyengine_us/parameters/gov/states/oh/tax/income/exemptions/personal/amount.yaml
+++ b/policyengine_us/parameters/gov/states/oh/tax/income/exemptions/personal/amount.yaml
@@ -4,14 +4,17 @@ brackets:
       2021-01-01: 0
     amount:
       2021-01-01: 2_400
-  - threshold: 
+      2025-01-01: 2_500
+  - threshold:
       2021-01-01: 40_000
     amount:
       2021-01-01: 2_150
+      2025-01-01: 2_250
   - threshold:
       2021-01-01: 80_000
     amount:
       2021-01-01: 1_900
+      2025-01-01: 2_000
 metadata:
   type: single_amount
   threshold_unit: currency-USD
@@ -19,14 +22,16 @@ metadata:
   period: year
   label: Ohio Personal Exemption
   reference:
-    - title: Ohio Revised Code - Section 5747.025： Personal exemptions (A)(1)(2)(3)
+    - title: Ohio Revised Code - Section 5747.025 Personal exemptions (A)(1)(2)(3)
       href: https://law.justia.com/codes/ohio/2022/title-57/chapter-5747/section-5747-025/
-    - title: 2022 Ohio IT 1040 Individual Income Tax Return Form Intructions (line 4)
-      href: https://tax.ohio.gov/static/forms/ohio_individual/individual/2022/it1040-sd100-instruction-booklet.pdf#page=14
-    - title: 2021 Ohio IT 1040 Individual Income Tax Return Form  (line 4)
+    - title: 2021 Ohio IT 1040 Individual Income Tax Return Form (line 4)
       href: https://tax.ohio.gov/static/forms/ohio_individual/individual/2021/pit-it1040-booklet.pdf#page=14
+    - title: 2022 Ohio IT 1040 Individual Income Tax Return Form Instructions (line 4)
+      href: https://tax.ohio.gov/static/forms/ohio_individual/individual/2022/it1040-sd100-instruction-booklet.pdf#page=14
     - title: Ohio Income Tax Form 2023 Instructions (line 4)
       href: https://dam.assets.ohio.gov/image/upload/tax.ohio.gov/forms/ohio_individual/individual/2023/it1040-sd100-instructionbooklet.pdf#page=17
     - title: Ohio Income Tax Form 2024 Instructions (line 4)
-      href: https://dam.assets.ohio.gov/image/upload/tax.ohio.gov/forms/ohio_individual/individual/2023/it1040-sd100-instructionbooklet.pdf#page=17
+      href: https://dam.assets.ohio.gov/image/upload/v1735920104/tax.ohio.gov/forms/ohio_individual/individual/2024/it1040-booklet.pdf#page=17
+    - title: Ohio Income Tax Form 2025 Instructions (Page 17)
+      href: https://dam.assets.ohio.gov/image/upload/v1767095693/tax.ohio.gov/forms/ohio_individual/individual/2025/it1040-booklet.pdf#page=17
       
diff --git a/policyengine_us/parameters/gov/states/oh/tax/income/rates.yaml b/policyengine_us/parameters/gov/states/oh/tax/income/rates.yaml
index 7bdcf4a6e97..8e8c4608a75 100644
--- a/policyengine_us/parameters/gov/states/oh/tax/income/rates.yaml
+++ b/policyengine_us/parameters/gov/states/oh/tax/income/rates.yaml
@@ -76,8 +76,10 @@ metadata:
       href: https://dam.assets.ohio.gov/image/upload/tax.ohio.gov/forms/ohio_individual/individual/2022/it1040-sd100-instruction-booklet.pdf#page=31
     - title: Ohio Income Tax Form 2023 Instructions
       href: https://dam.assets.ohio.gov/image/upload/tax.ohio.gov/forms/ohio_individual/individual/2023/it1040-sd100-instructionbooklet.pdf#page=46
-    - title: Ohio Income Tax Form 2024 Instructions 
+    - title: Ohio Income Tax Form 2024 Instructions
       href: https://dam.assets.ohio.gov/image/upload/v1735920104/tax.ohio.gov/forms/ohio_individual/individual/2024/it1040-booklet.pdf#page=18
+    - title: Ohio Income Tax Form 2025 Instructions (Page 18)
+      href: https://dam.assets.ohio.gov/image/upload/v1767095693/tax.ohio.gov/forms/ohio_individual/individual/2025/it1040-booklet.pdf#page=18
     - title: House Bill 96
       href: https://search-prod.lis.state.oh.us/api/v2/general_assembly_136/legislation/hb96/07_EN/pdf/#page=2608
 
diff --git a/policyengine_us/tests/policy/baseline/gov/states/oh/tax/income/integration_2025.yaml b/policyengine_us/tests/policy/baseline/gov/states/oh/tax/income/integration_2025.yaml
new file mode 100644
index 00000000000..a27fdd67829
--- /dev/null
+++ b/policyengine_us/tests/policy/baseline/gov/states/oh/tax/income/integration_2025.yaml
@@ -0,0 +1,95 @@
+# Ohio 2025 Income Tax Integration Tests
+# Based on 2025 IT 1040 Booklet and Ohio Revised Code Chapter 5747
+# Tests 2025 parameter values: exemptions ($2,500/$2,250/$2,000) and rates (0%/2.75%/3.15%)
+
+- name: 2025 - Single filer medium income (2.75% bracket)
+  absolute_error_margin: 5
+  period: 2025
+  input:
+    people:
+      person1:
+        age: 45
+        employment_income: 68_050
+        is_tax_unit_head: true
+    tax_units:
+      tax_unit:
+        members: [person1]
+    spm_units:
+      spm_unit:
+        members: [person1]
+    households:
+      household:
+        members: [person1]
+        state_code: OH
+  output:
+    # Income: $68,050 (middle exemption tier: $40k-$80k)
+    # Exemption: 1 * $2,250 = $2,250
+    # Taxable income: $68,050 - $2,250 = $65,800
+    # Tax: $342 base + 2.75% of ($65,800 - $26,050) = $1,435
+    oh_personal_exemptions: 2_250
+    oh_taxable_income: 65_800
+    oh_income_tax_before_non_refundable_credits: 1_435
+
+- name: 2025 - High income married couple (3.15% bracket)
+  absolute_error_margin: 10
+  period: 2025
+  input:
+    people:
+      person1:
+        age: 50
+        employment_income: 100_000
+        is_tax_unit_head: true
+      person2:
+        age: 48
+        employment_income: 50_000
+        is_tax_unit_spouse: true
+    tax_units:
+      tax_unit:
+        members: [person1, person2]
+        filing_status: JOINT
+    spm_units:
+      spm_unit:
+        members: [person1, person2]
+    households:
+      household:
+        members: [person1, person2]
+        state_code: OH
+  output:
+    # Income: $150,000 (high exemption tier: >$80k)
+    # Exemptions: 2 * $2,000 = $4,000
+    # Taxable income: $150,000 - $4,000 = $146,000
+    oh_personal_exemptions: 4_000
+    oh_taxable_income: 146_000
+
+- name: 2025 - Low income family (lowest exemption tier)
+  absolute_error_margin: 5
+  period: 2025
+  input:
+    people:
+      person1:
+        age: 35
+        employment_income: 25_000
+        is_tax_unit_head: true
+      person2:
+        age: 33
+        employment_income: 10_000
+        is_tax_unit_spouse: true
+      child1:
+        age: 8
+        is_tax_unit_dependent: true
+    tax_units:
+      tax_unit:
+        members: [person1, person2, child1]
+    spm_units:
+      spm_unit:
+        members: [person1, person2, child1]
+    households:
+      household:
+        members: [person1, person2, child1]
+        state_code: OH
+  output:
+    # Income: $35,000 (lowest exemption tier: <=$40k)
+    # Exemptions: 3 * $2,500 = $7,500
+    # Taxable income: $35,000 - $7,500 = $27,500
+    oh_personal_exemptions: 7_500
+    oh_taxable_income: 27_500