PolicyEngine · DTrim99 · Jan 6, 2026 · Jan 6, 2026
diff --git a/changelog_entry.yaml b/changelog_entry.yaml
@@ -0,0 +1,4 @@
+- bump: minor
+  changes:
+    changed:
+      - Update Michigan 2025 Individual Income Tax Model parameters
diff --git a/policyengine_us/parameters/gov/states/mi/tax/income/credits/eitc/match.yaml b/policyengine_us/parameters/gov/states/mi/tax/income/credits/eitc/match.yaml
@@ -10,8 +10,10 @@ metadata:
       href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/2022/2022-IIT-Forms/MI-1040.pdf#page=2
     - title: 2023 MICHIGAN Individual Income Tax Return MI-1040 Form, Line 27
       href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/2023/2023-IIT-Forms/MI-1040.pdf#page=2
-    - title: Michigan 2024 Indiviudal Income Tax Instructions, Line 27
+    - title: Michigan 2024 Individual Income Tax Instructions, Line 27
       href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/IIT/TY2024/MI-1040-Instructions.pdf#page=11
+    - title: Michigan 2025 Individual Income Tax Instructions, Line 27
+      href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/IIT/TY2025/MI-1040-Book.pdf#page=11
 values:
   2008-01-01: 0.1
   2009-01-01: 0.2

diff --git a/policyengine_us/parameters/gov/states/mi/tax/income/credits/homestead_property_tax/cap.yaml b/policyengine_us/parameters/gov/states/mi/tax/income/credits/homestead_property_tax/cap.yaml
@@ -21,8 +21,11 @@ metadata:
     href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/2023/2023-IIT-Forms/MI-1040CR.pdf#page=2
   - title: 2024 MI-1040CR Tax Form, Line 38
     href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/IIT/TY2024/MI-1040CR.pdf#page=2
+  - title: 2025 MI-1040CR Tax Form, Line 38
+    href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/IIT/TY2025/MI-1040CR.pdf#page=2
 values:
   2018-01-01: 1_500
   2022-01-01: 1_600
   2023-01-01: 1_700
   2024-01-01: 1_800
+  2025-01-01: 1_900
diff --git a/...ov/states/mi/tax/income/credits/homestead_property_tax/exemption/non_senior_disabled.yaml b/...ov/states/mi/tax/income/credits/homestead_property_tax/exemption/non_senior_disabled.yaml
@@ -20,6 +20,8 @@ metadata:
       href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/2023/2023-IIT-Forms/MI-1040CR.pdf#page=2
     - title: 2024 MI-1040CR Tax Form, Line 34
       href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/IIT/TY2024/MI-1040CR.pdf#page=2
+    - title: 2025 MI-1040CR Tax Form, Line 34
+      href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/IIT/TY2025/MI-1040CR.pdf#page=2
 values:
   2017-01-01: 0.035
   2018-01-01: 0.032
diff --git a/...rs/gov/states/mi/tax/income/credits/homestead_property_tax/exemption/senior_disabled.yaml b/...rs/gov/states/mi/tax/income/credits/homestead_property_tax/exemption/senior_disabled.yaml
@@ -41,3 +41,5 @@ metadata:
       href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/2023/2023-IIT-Forms/BOOK_MI-1040.pdf#page=32
     - title: 2024 MI-1040 Instructions
       href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/IIT/TY2024/MI-1040-Instructions.pdf#page=32
+    - title: 2025 MI-1040 Instructions
+      href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/IIT/TY2025/MI-1040-Book.pdf#page=32
diff --git a/...ameters/gov/states/mi/tax/income/credits/homestead_property_tax/property_value_limit.yaml b/...ameters/gov/states/mi/tax/income/credits/homestead_property_tax/property_value_limit.yaml
@@ -21,8 +21,11 @@ metadata:
     href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/2023/2023-IIT-Forms/MI-1040CR.pdf#page=1
   - title: 2024 MI-1040CR Tax Form, Line 9
     href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/IIT/TY2024/MI-1040CR.pdf#page=1
+  - title: 2025 MI-1040CR Tax Form, Line 9
+    href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/IIT/TY2025/MI-1040CR.pdf#page=1
 values:
   2021-01-01: 135_000
   2022-01-01: 143_000
   2023-01-01: 154_400
   2024-01-01: 160_700
+  2025-01-01: 165_400
diff --git a/...ers/gov/states/mi/tax/income/credits/homestead_property_tax/rate/non_senior_disabled.yaml b/...ers/gov/states/mi/tax/income/credits/homestead_property_tax/rate/non_senior_disabled.yaml
@@ -16,5 +16,7 @@ metadata:
       href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/2023/2023-IIT-Forms/MI-1040CR.pdf#page=2
     - title: 2024 MI-1040CR Tax Form, Line 41
       href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/IIT/TY2024/MI-1040CR.pdf#page=2
+    - title: 2025 MI-1040CR Tax Form, Line 41
+      href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/IIT/TY2025/MI-1040CR.pdf#page=2
 values:
   2017-01-01: 0.6
diff --git a/...meters/gov/states/mi/tax/income/credits/homestead_property_tax/rate/senior/alternate.yaml b/...meters/gov/states/mi/tax/income/credits/homestead_property_tax/rate/senior/alternate.yaml
@@ -18,5 +18,7 @@ metadata:
     href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/2023/2023-IIT-Forms/MI-1040CR.pdf#page=2
   - title: 2024 MI-1040 Instructions, MI 1040CR Worksheet 5
     href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/IIT/TY2024/MI-1040-Instructions.pdf#page=32
+  - title: 2025 MI-1040 Instructions, MI 1040CR Worksheet 5
+    href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/IIT/TY2025/MI-1040-Book.pdf#page=32
 values:
   2021-01-01: 0.4
diff --git a/.../parameters/gov/states/mi/tax/income/credits/homestead_property_tax/rate/senior/base.yaml b/.../parameters/gov/states/mi/tax/income/credits/homestead_property_tax/rate/senior/base.yaml
@@ -59,6 +59,8 @@ metadata:
       href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/2023/2023-IIT-Forms/BOOK_MI-1040.pdf#page=32
     - title: 2024 MI-1040 Instructions, MI 1040CR Table A
       href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/IIT/TY2024/MI-1040-Instructions.pdf#page=32
+    - title: 2025 MI-1040 Instructions, MI 1040CR Table A
+      href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/IIT/TY2025/MI-1040-Book.pdf#page=32
     - title: Michigan Income Tax Act 206.522 - (1)(b)
       href: http://legislature.mi.gov/doc.aspx?mcl-206-522
     - title: 2021 Michigan Taxpayer Assistance Manual

diff --git a/...rameters/gov/states/mi/tax/income/credits/homestead_property_tax/reduction/increment.yaml b/...rameters/gov/states/mi/tax/income/credits/homestead_property_tax/reduction/increment.yaml
@@ -11,6 +11,8 @@ metadata:
       href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/2023/2023-IIT-Forms/BOOK_MI-1040.pdf#page=33
     - title: 2024 MI-1040 Instructions, MI 1040CR Table B
       href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/IIT/TY2024/MI-1040-Instructions.pdf#page=33
+    - title: 2025 MI-1040 Instructions, MI 1040CR Table B
+      href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/IIT/TY2025/MI-1040-Book.pdf#page=33
     - title: Michigan Income Tax Act 206.520 - (8)
       href: http://legislature.mi.gov/doc.aspx?mcl-206-520
     - title: 2021 Michigan Taxpayer Assistance Manual

diff --git a/...us/parameters/gov/states/mi/tax/income/credits/homestead_property_tax/reduction/rate.yaml b/...us/parameters/gov/states/mi/tax/income/credits/homestead_property_tax/reduction/rate.yaml
@@ -10,6 +10,8 @@ metadata:
       href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/2023/2023-IIT-Forms/BOOK_MI-1040.pdf#page=33
     - title: 2024 MI-1040 Instructions, MI 1040CR Table B
       href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/IIT/TY2024/MI-1040-Instructions.pdf#page=33
+    - title: 2025 MI-1040 Instructions, MI 1040CR Table B
+      href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/IIT/TY2025/MI-1040-Book.pdf#page=33
     - title: Michigan Income Tax Act 206.520 - (8)
       href: http://legislature.mi.gov/doc.aspx?mcl-206-520
     - title: 2021 Michigan Taxpayer Assistance Manual

diff --git a/...s/parameters/gov/states/mi/tax/income/credits/homestead_property_tax/reduction/start.yaml b/...s/parameters/gov/states/mi/tax/income/credits/homestead_property_tax/reduction/start.yaml
@@ -15,6 +15,8 @@ metadata:
       href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/2023/2023-IIT-Forms/BOOK_MI-1040.pdf#page=33
     - title: 2024 MI-1040 Instructions, MI 1040CR Table B
       href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/IIT/TY2024/MI-1040-Instructions.pdf#page=33
+    - title: 2025 MI-1040CR Tax Form
+      href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/IIT/TY2025/MI-1040CR.pdf#page=2
     - title: Michigan Income Tax Act 206.520 - (8)
       href: http://legislature.mi.gov/doc.aspx?mcl-206-520
     - title: 2021 Michigan Taxpayer Assistance Manual
@@ -29,3 +31,4 @@ values:
   2022-01-01: 54_000
   2023-01-01: 58_300
   2024-01-01: 60_700
+  2025-01-01: 62_500
diff --git a/...rameters/gov/states/mi/tax/income/credits/homestead_property_tax/rent_equivalization.yaml b/...rameters/gov/states/mi/tax/income/credits/homestead_property_tax/rent_equivalization.yaml
@@ -19,6 +19,8 @@ metadata:
     href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/2023/2023-IIT-Forms/MI-1040CR.pdf#page=1
   - title: 2024 MI-1040CR Tax Form, Line 12
     href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/IIT/TY2024/MI-1040CR.pdf#page=1
+  - title: 2025 MI-1040CR Tax Form, Line 12
+    href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/IIT/TY2025/MI-1040CR.pdf#page=1
 values:
   2017-01-01: 0.2
   2018-01-01: 0.23
diff --git a/...s/parameters/gov/states/mi/tax/income/deductions/retirement_benefits/tier_one/amount.yaml b/...s/parameters/gov/states/mi/tax/income/deductions/retirement_benefits/tier_one/amount.yaml
@@ -18,8 +18,10 @@ metadata:
       href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/2022/2022-IIT-Forms/BOOK_MI-1040.pdf#page=17
     - title: Michigan 2023 MI-1040 Individual Income Tax FORMS AND INSTRUCTIONS
       href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/2023/2023-IIT-Forms/BOOK_MI-1040.pdf#page=19
-    - title: Michigan 2024 Indiviudal Income Tax Instructions
+    - title: Michigan 2024 Individual Income Tax Instructions
       href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/IIT/TY2024/MI-1040-Instructions.pdf#page=20
+    - title: Michigan Retirement and Pension Benefits - 2025 Tax Year
+      href: https://www.michigan.gov/taxes/iit/tax-guidance/tax-situations/retirement-and-pension-benefits
     # 2021 manual contains values dating to 2017.
     - title: 2021 Michigan Taxpayer Assistance Manual
       href: https://www.michigan.gov/-/media/Project/Websites/taxes/2022RM/UNCAT/2019_Taxpayer_Assistance_Manual.pdf#page=10
@@ -35,6 +37,7 @@ SINGLE:
   2022-01-01: 56_961
   2023-01-01: 61_518
   2024-01-01: 64_040
+  2025-01-01: 65_897
 
 JOINT:
   2017-01-01: 101_019
@@ -45,6 +48,7 @@ JOINT:
   2022-01-01: 113_922
   2023-01-01: 123_036
   2024-01-01: 128_080
+  2025-01-01: 131_794
 
 SURVIVING_SPOUSE:
   2017-01-01: 50_509
@@ -55,6 +59,7 @@ SURVIVING_SPOUSE:
   2022-01-01: 56_961
   2023-01-01: 61_518
   2024-01-01: 64_040
+  2025-01-01: 65_897
 
 HEAD_OF_HOUSEHOLD:
   2017-01-01: 50_509
@@ -65,6 +70,7 @@ HEAD_OF_HOUSEHOLD:
   2022-01-01: 56_961
   2023-01-01: 61_518
   2024-01-01: 64_040
+  2025-01-01: 65_897
 
 SEPARATE:
   2017-01-01: 50_509
@@ -75,3 +81,4 @@ SEPARATE:
   2022-01-01: 56_961
   2023-01-01: 61_518
   2024-01-01: 64_040
+  2025-01-01: 65_897
diff --git a/...s/gov/states/mi/tax/income/deductions/retirement_benefits/tier_three/age_eligibility.yaml b/...s/gov/states/mi/tax/income/deductions/retirement_benefits/tier_three/age_eligibility.yaml
@@ -29,8 +29,10 @@ metadata:
       href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/2022/2022-IIT-Forms/BOOK_MI-1040.pdf#page=17
     - title: Michigan 2023 MI-1040 Individual Income Tax FORMS AND INSTRUCTIONS
       href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/2023/2023-IIT-Forms/BOOK_MI-1040.pdf#page=20
-    - title: Michigan 2024 Indiviudal Income Tax Instructions
+    - title: Michigan 2024 Individual Income Tax Instructions
       href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/IIT/TY2024/MI-1040-Instructions.pdf#page=20
+    - title: Michigan 2025 Individual Income Tax Instructions
+      href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/IIT/TY2025/MI-1040-Book.pdf#page=20
     - title: 2021 Michigan Taxpayer Assistance Manual
       href: https://www.michigan.gov/-/media/Project/Websites/taxes/2022RM/UNCAT/2019_Taxpayer_Assistance_Manual.pdf#page=42
     - title: 2023 Michigan Taxpayer Assistance Manual

diff --git a/...mi/tax/income/deductions/retirement_benefits/tier_three/ss_exempt/not_retired/amount.yaml b/...mi/tax/income/deductions/retirement_benefits/tier_three/ss_exempt/not_retired/amount.yaml
@@ -17,8 +17,10 @@ metadata:
       href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/2022/2022-IIT-Forms/BOOK_MI-1040.pdf#page=17
     - title: Michigan 2023 MI-1040 Individual Income Tax FORMS AND INSTRUCTIONS
       href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/2023/2023-IIT-Forms/BOOK_MI-1040.pdf#page=20
-    - title: Michigan 2024 Indiviudal Income Tax Instructions
+    - title: Michigan 2024 Individual Income Tax Instructions
       href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/IIT/TY2024/MI-1040-Instructions.pdf#page=20
+    - title: Michigan 2025 Individual Income Tax Instructions
+      href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/IIT/TY2025/MI-1040-Book.pdf#page=20
     - title: 2021 Michigan Taxpayer Assistance Manual
       href: https://www.michigan.gov/-/media/Project/Websites/taxes/2022RM/UNCAT/2019_Taxpayer_Assistance_Manual.pdf#page=42
     - title: 2023 Michigan Taxpayer Assistance Manual

diff --git a/...e/deductions/retirement_benefits/tier_three/ss_exempt/retired/both_qualifying_amount.yaml b/...e/deductions/retirement_benefits/tier_three/ss_exempt/retired/both_qualifying_amount.yaml
@@ -12,8 +12,10 @@ metadata:
       href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/2022/2022-IIT-Forms/BOOK_MI-1040.pdf#page=18
     - title: Michigan 2023 MI-1040 Individual Income Tax FORMS AND INSTRUCTIONS
       href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/2023/2023-IIT-Forms/BOOK_MI-1040.pdf#page=20
-    - title: Michigan 2024 Indiviudal Income Tax Instructions
+    - title: Michigan 2024 Individual Income Tax Instructions
       href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/IIT/TY2024/MI-1040-Instructions.pdf#page=20
+    - title: Michigan 2025 Individual Income Tax Instructions
+      href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/IIT/TY2025/MI-1040-Book.pdf#page=20
     - title: Michigan Retirement and Pension Benefits
       href: https://www.michigan.gov/taxes/iit/retirement-and-pension-benefits
     # 2021 manual contains values dating to 2017.

diff --git a/...x/income/deductions/retirement_benefits/tier_three/ss_exempt/retired/retirement_year.yaml b/...x/income/deductions/retirement_benefits/tier_three/ss_exempt/retired/retirement_year.yaml
@@ -14,8 +14,10 @@ metadata:
       href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/2022/2022-IIT-Forms/BOOK_MI-1040.pdf#page=18
     - title: Michigan 2023 MI-1040 Individual Income Tax FORMS AND INSTRUCTIONS
       href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/2023/2023-IIT-Forms/BOOK_MI-1040.pdf#page=20
-    - title: Michigan 2024 Indiviudal Income Tax Instructions
+    - title: Michigan 2024 Individual Income Tax Instructions
       href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/IIT/TY2024/MI-1040-Instructions.pdf#page=20
+    - title: Michigan 2025 Individual Income Tax Instructions
+      href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/IIT/TY2025/MI-1040-Book.pdf#page=20
     - title: Michigan Retirement and Pension Benefits
       href: https://www.michigan.gov/taxes/iit/retirement-and-pension-benefits
     # 2021 manual contains values dating to 2017.

diff --git a/...deductions/retirement_benefits/tier_three/ss_exempt/retired/single_qualifying_amount.yaml b/...deductions/retirement_benefits/tier_three/ss_exempt/retired/single_qualifying_amount.yaml
@@ -12,8 +12,10 @@ metadata:
       href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/2022/2022-IIT-Forms/BOOK_MI-1040.pdf#page=18
     - title: Michigan 2023 MI-1040 Individual Income Tax FORMS AND INSTRUCTIONS
       href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/2023/2023-IIT-Forms/BOOK_MI-1040.pdf#page=20
-    - title: Michigan 2024 Indiviudal Income Tax Instructions
+    - title: Michigan 2024 Individual Income Tax Instructions
       href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/IIT/TY2024/MI-1040-Instructions.pdf#page=20
+    - title: Michigan 2025 Individual Income Tax Instructions
+      href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/IIT/TY2025/MI-1040-Book.pdf#page=20
     - title: Michigan Retirement and Pension Benefits
       href: https://www.michigan.gov/taxes/iit/retirement-and-pension-benefits
     # 2021 manual contains values dating to 2017.

diff --git a/...yengine_us/parameters/gov/states/mi/tax/income/deductions/standard/tier_three/amount.yaml b/...yengine_us/parameters/gov/states/mi/tax/income/deductions/standard/tier_three/amount.yaml
@@ -10,8 +10,10 @@ metadata:
       href: http://legislature.mi.gov/doc.aspx?mcl-206-30
     - title: Michigan Standard Deduction
       href: https://www.michigan.gov/taxes/iit/retirement-and-pension-benefits/michigan-standard-deduction
-    - title: Michigan 2024 Indiviudal Income Tax Instructions
+    - title: Michigan 2024 Individual Income Tax Instructions
       href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/IIT/TY2024/MI-1040-Instructions.pdf#page=17
+    - title: Michigan 2025 Individual Income Tax Instructions
+      href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/IIT/TY2025/MI-1040-Book.pdf#page=17
     - title: Michigan 2023 MI-1040 Individual Income Tax FORMS AND INSTRUCTIONS
       href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/2023/2023-IIT-Forms/BOOK_MI-1040.pdf#page=17
     - title: Michigan 2022 MI-1040 Individual Income Tax FORMS AND INSTRUCTIONS

diff --git a/...gine_us/parameters/gov/states/mi/tax/income/deductions/standard/tier_two/amount/base.yaml b/...gine_us/parameters/gov/states/mi/tax/income/deductions/standard/tier_two/amount/base.yaml
@@ -14,8 +14,10 @@ metadata:
       href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/2022/2022-IIT-Forms/BOOK_MI-1040.pdf#page=15
     - title: Michigan 2023 MI-1040 Individual Income Tax FORMS AND INSTRUCTIONS
       href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/2023/2023-IIT-Forms/BOOK_MI-1040.pdf#page=16
-    - title: Michigan 2024 Indiviudal Income Tax Instructions
+    - title: Michigan 2024 Individual Income Tax Instructions
       href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/IIT/TY2024/MI-1040-Instructions.pdf#page=17
+    - title: Michigan 2025 Individual Income Tax Instructions
+      href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/IIT/TY2025/MI-1040-Book.pdf#page=17
     # 2021 manual contains values dating to 2017.
     - title: 2021 Michigan Taxpayer Assistance Manual
       href: https://www.michigan.gov/-/media/Project/Websites/taxes/2022RM/UNCAT/2019_Taxpayer_Assistance_Manual.pdf#page=10

diff --git a/...cyengine_us/parameters/gov/states/mi/tax/income/exemptions/dependent_on_other_return.yaml b/...cyengine_us/parameters/gov/states/mi/tax/income/exemptions/dependent_on_other_return.yaml
@@ -22,8 +22,10 @@ metadata:
       href: https://www.legislature.mi.gov/Publications/TaxpayerGuide.pdf#page=23
     - title: 2021 Michigan Taxpayer Assistance Manual
       href: https://www.michigan.gov/-/media/Project/Websites/taxes/2022RM/UNCAT/2019_Taxpayer_Assistance_Manual.pdf#page=35
-    - title: Michigan 2024 Indiviudal Income Tax Instructions, Line 9e
+    - title: Michigan 2024 Individual Income Tax Instructions, Line 9e
       href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/IIT/TY2024/MI-1040-Instructions.pdf#page=10
+    - title: Michigan 2025 Individual Income Tax Instructions, Line 9e
+      href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/IIT/TY2025/MI-1040-Book.pdf#page=10
     - title: 2023 Michigan 1040 Instructions
       href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/2023/2023-IIT-Forms/BOOK_MI-1040.pdf#page=10
     - title: 2022 Michigan 1040 Instructions

diff --git a/policyengine_us/parameters/gov/states/mi/tax/income/exemptions/disabled/amount/base.yaml b/policyengine_us/parameters/gov/states/mi/tax/income/exemptions/disabled/amount/base.yaml
@@ -6,6 +6,7 @@ values:
   2022-01-01: 2_900
   2023-01-01: 3_100
   2024-01-01: 3_300
+  2025-01-01: 3_400
 
 metadata:
   period: year
@@ -27,5 +28,7 @@ metadata:
     href: https://www.michigan.gov/-/media/Project/Websites/taxes/2022RM/UNCAT/2019_Taxpayer_Assistance_Manual.pdf#page=10
   - title: 2023 MI-1040 Instructions
     href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/2023/2023-IIT-Forms/BOOK_MI-1040.pdf#page=3
-  - title: Michigan 2024 Indiviudal Income Tax Instructions
+  - title: Michigan 2024 Individual Income Tax Instructions
     href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/IIT/TY2024/MI-1040-Instructions.pdf#page=13
+  - title: Michigan 2025 Income Tax Withholding Guide (Form 446)
+    href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/SUW/TY2025/446_Withholding-Guide_2025.pdf#page=2
diff --git a/policyengine_us/parameters/gov/states/mi/tax/income/exemptions/disabled/amount/veteran.yaml b/policyengine_us/parameters/gov/states/mi/tax/income/exemptions/disabled/amount/veteran.yaml
@@ -20,5 +20,7 @@ metadata:
     href: https://www.michigan.gov/-/media/Project/Websites/taxes/2022RM/UNCAT/2019_Taxpayer_Assistance_Manual.pdf#page=10
   - title: 2023 MI-1040 Instructions
     href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/2023/2023-IIT-Forms/BOOK_MI-1040.pdf#page=3
-  - title: Michigan 2024 Indiviudal Income Tax Instructions
+  - title: Michigan 2024 Individual Income Tax Instructions
     href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/IIT/TY2024/MI-1040-Instructions.pdf#page=3
+  - title: Michigan 2025 Income Tax Withholding Guide (Form 446)
+    href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/SUW/TY2025/446_Withholding-Guide_2025.pdf#page=2
diff --git a/policyengine_us/parameters/gov/states/mi/tax/income/exemptions/personal.yaml b/policyengine_us/parameters/gov/states/mi/tax/income/exemptions/personal.yaml
@@ -8,6 +8,7 @@ values:
   2022-01-01: 5_000
   2023-01-01: 5_400
   2024-01-01: 5_600
+  2025-01-01: 5_800
 
 metadata:
   period: year
@@ -31,6 +32,8 @@ metadata:
     href: https://www.michigan.gov/taxes/business-taxes/withholding/withholding-tax-faqs/what-is-michigans-2023-personal-exemption-amount
   - title: 2023 MI-1040 Instructions
     href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/2023/2023-IIT-Forms/BOOK_MI-1040.pdf#page=3
-  - title: Michigan 2024 Indiviudal Income Tax Instructions, Line 9a
+  - title: Michigan 2024 Individual Income Tax Instructions, Line 9a
     href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/IIT/TY2024/MI-1040-Instructions.pdf#page=13
+  - title: Michigan 2025 Income Tax Withholding Guide (Form 446)
+    href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/SUW/TY2025/446_Withholding-Guide_2025.pdf#page=2