PolicyEngine · MaxGhenis · Oct 16, 2025
diff --git a/changelog_entry.yaml b/changelog_entry.yaml
@@ -0,0 +1,4 @@
+- bump: patch
+  changes:
+    changed:
+    - Remove deprecated 'name' metadata field from 51 parameter files
diff --git a/...eters/gov/hhs/medicaid/eligibility/categories/medically_needy/categories/child/child.yaml b/...eters/gov/hhs/medicaid/eligibility/categories/medically_needy/categories/child/child.yaml
@@ -1,7 +1,6 @@
 description: Whether children can qualify for Medicaid under the 'medically needy' pathway.
 metadata:
   unit: bool
-  name: medicaid_medically_needy_children
   label: Medicaid medically needy pathway for children
   reference:
     - title: "Medicaid Financial Eligibility for Seniors and People with Disabilities: Findings from a 50-State Survey | KFF"

diff --git a/policyengine_us/parameters/gov/irs/credits/cdcc/eligibility/child_age.yaml b/policyengine_us/parameters/gov/irs/credits/cdcc/eligibility/child_age.yaml
@@ -3,7 +3,6 @@ values:
   2010-01-01: 13
 metadata:
   unit: year
-  name: cdcc_dependent_child_age
   label: CDCC dependent child maximum age
   reference:
     - title: 26 U.S. Code § 21(d)(1)(A)

diff --git a/policyengine_us/parameters/gov/irs/credits/clean_vehicle/new/eligibility/min_kwh.yaml b/policyengine_us/parameters/gov/irs/credits/clean_vehicle/new/eligibility/min_kwh.yaml
@@ -3,7 +3,6 @@ values:
   2021-01-01: 4
 metadata:
   unit: kilowatt-hour
-  name: new_clean_vehicle_credit_min_kwh
   label: Minimum kWh of battery capacity for new clean vehicle to be eligible for credit
   reference:
     - title: 26 U.S. Code § 30D - New qualified plug-in electric drive motor vehicles (d)(1)(F)(i)

diff --git a/...engine_us/parameters/gov/irs/credits/clean_vehicle/used/eligibility/sale_price_limit.yaml b/...engine_us/parameters/gov/irs/credits/clean_vehicle/used/eligibility/sale_price_limit.yaml
@@ -5,7 +5,6 @@ metadata:
       href: https://www.democrats.senate.gov/imo/media/doc/inflation_reduction_act_of_2022.pdf#page=390
   label: Sale price limit for used clean vehicle credit
   unit: currency-USD
-  name: used_clean_vehicle_credit_sale_price_limit
 values:
   0000-01-01: 0
   2023-01-01: 25_000
diff --git a/...engine_us/parameters/gov/irs/credits/education/american_opportunity_credit/abolition.yaml b/...engine_us/parameters/gov/irs/credits/education/american_opportunity_credit/abolition.yaml
@@ -4,4 +4,3 @@ values:
 metadata:
   unit: abolition
   label: American Opportunity Credit abolition
-  name: abolish_aoc
diff --git a/...ne_us/parameters/gov/irs/credits/education/american_opportunity_credit/refundability.yaml b/...ne_us/parameters/gov/irs/credits/education/american_opportunity_credit/refundability.yaml
@@ -3,7 +3,6 @@ values:
   2009-01-01: 0.4
 metadata:
   unit: /1
-  name: aoc_refundable_percentage
   label: American Opportunity Credit refundable percentage
   reference:
     - title: 26 U.S. Code § 25A

diff --git a/policyengine_us/parameters/gov/irs/credits/education/lifetime_learning_credit/abolition.yaml b/policyengine_us/parameters/gov/irs/credits/education/lifetime_learning_credit/abolition.yaml
@@ -4,4 +4,3 @@ values:
 metadata:
   unit: abolition
   label: Abolish the Lifetime Learning Credit
-  name: abolish_llc
diff --git a/...ngine_us/parameters/gov/irs/credits/education/lifetime_learning_credit/expense_limit.yaml b/...ngine_us/parameters/gov/irs/credits/education/lifetime_learning_credit/expense_limit.yaml
@@ -4,7 +4,6 @@ values:
 metadata:
   unit: currency-USD
   period: year
-  name: llc_max_expense
   label: Lifetime Learning Credit maximum expense
   reference:
     - title: 26 U.S. Code § 25A(c)(1)

diff --git a/...edits/energy_efficient_home_improvement/cap/annual/advanced_main_air_circulating_fan.yaml b/...edits/energy_efficient_home_improvement/cap/annual/advanced_main_air_circulating_fan.yaml
@@ -6,7 +6,6 @@ values:
 metadata:
   unit: currency-USD
   period: year
-  name: energy_efficient_home_improvement_credit_advanced_main_air_circulating_fan_cap
   label: Energy efficient home improvement credit cap on advanced main air circulating fans
   reference:
     - title: 26 U.S.C. § 25C(b)(3)(A)

diff --git a/...gine_us/parameters/gov/irs/credits/energy_efficient_home_improvement/cap/annual/door.yaml b/...gine_us/parameters/gov/irs/credits/energy_efficient_home_improvement/cap/annual/door.yaml
@@ -6,7 +6,6 @@ values:
 metadata:
   unit: currency-USD
   period: year
-  name: energy_efficient_home_improvement_credit_annual_cap_doors
   label: Energy efficient home improvement credit cap on exterior doors
   reference:
     - title: Inflation Reduction Act, Part 3, Section 13301 (c)

diff --git a/...nergy_efficient_home_improvement/cap/annual/energy_efficient_central_air_conditioner.yaml b/...nergy_efficient_home_improvement/cap/annual/energy_efficient_central_air_conditioner.yaml
@@ -4,7 +4,6 @@ values:
 metadata:
   unit: currency-USD
   period: year
-  name: energy_efficient_home_improvement_credit_energy_efficient_central_air_conditioner_cap
   label: Energy efficient home improvement credit cap on energy-efficient central air conditioners
   reference:
     - title: 26 U.S.C. § 25C(b)(3)(C)

diff --git a/...nt_home_improvement/cap/annual/heat_pump_heat_pump_water_heater_biomass_stove_boiler.yaml b/...nt_home_improvement/cap/annual/heat_pump_heat_pump_water_heater_biomass_stove_boiler.yaml
@@ -5,7 +5,6 @@ values:
 metadata:
   unit: currency-USD
   period: year
-  name: energy_efficient_home_improvement_credit_annual_cap_heat_pumps_heat_pump_water_heaters_biomass_stoves_boilers
   label: Energy efficient home improvement credit cap on heat pumps, heat pump water heaters, and biomass stoves and boilers
   reference:
     - title: Inflation Reduction Act, Part 3, Section 13301 (c)

diff --git a/...eters/gov/irs/credits/energy_efficient_home_improvement/cap/annual/home_energy_audit.yaml b/...eters/gov/irs/credits/energy_efficient_home_improvement/cap/annual/home_energy_audit.yaml
@@ -5,7 +5,6 @@ values:
 metadata:
   unit: currency-USD
   period: year
-  name: energy_efficient_home_improvement_credit_home_energy_audit_cap
   label: Energy efficient home improvement credit cap on home energy audits
   reference:
     - title: Inflation Reduction Act

diff --git a/...s/energy_efficient_home_improvement/cap/annual/qualified_furnace_or_hot_water_boiler.yaml b/...s/energy_efficient_home_improvement/cap/annual/qualified_furnace_or_hot_water_boiler.yaml
@@ -6,7 +6,6 @@ values:
 metadata:
   unit: currency-USD
   period: year
-  name: energy_efficient_home_improvement_credit_furnace_boiler_cap
   label: Energy efficient home improvement credit cap on qualified furnaces or boilers
   reference:
     - title: 26 U.S.C. § 25C(b)(3)(B)

diff --git a/...gine_us/parameters/gov/irs/credits/energy_efficient_home_improvement/cap/annual/roof.yaml b/...gine_us/parameters/gov/irs/credits/energy_efficient_home_improvement/cap/annual/roof.yaml
@@ -6,7 +6,6 @@ values:
 metadata:
   unit: currency-USD
   period: year
-  name: energy_efficient_home_improvement_credit_annual_cap_roofs
   label: Energy efficient home improvement credit cap on roofs
   reference:
     - title: Inflation Reduction Act, Part 3, Section 13301 (c)

diff --git a/...ine_us/parameters/gov/irs/credits/energy_efficient_home_improvement/cap/annual/total.yaml b/...ine_us/parameters/gov/irs/credits/energy_efficient_home_improvement/cap/annual/total.yaml
@@ -5,7 +5,6 @@ values:
 metadata:
   unit: currency-USD
   period: year
-  name: energy_efficient_home_improvement_credit_annual_cap_total
   label: Energy efficient home improvement credit total cap
   reference:
     - title: Inflation Reduction Act, Part 3, Section 13301 (c)

diff --git a/...ne_us/parameters/gov/irs/credits/energy_efficient_home_improvement/cap/annual/window.yaml b/...ne_us/parameters/gov/irs/credits/energy_efficient_home_improvement/cap/annual/window.yaml
@@ -5,7 +5,6 @@ values:
 metadata:
   unit: currency-USD
   period: year
-  name: energy_efficient_home_improvement_credit_annual_cap_windows
   # NB: This is per item of energy property, but we apply it over the whole year.
   label: Energy efficient home improvement credit cap on windows and skylights
   reference:

diff --git a/...e_us/parameters/gov/irs/credits/energy_efficient_home_improvement/cap/lifetime/total.yaml b/...e_us/parameters/gov/irs/credits/energy_efficient_home_improvement/cap/lifetime/total.yaml
@@ -5,7 +5,6 @@ values:
   2023-01-01: .inf
 metadata:
   unit: currency-USD
-  name: energy_efficient_home_improvement_credit_lifetime_cap
   label: Energy efficient home improvement credit lifetime limit
   reference:
     - title: 26 U.S.C. § 25C(b)(1)

diff --git a/..._us/parameters/gov/irs/credits/energy_efficient_home_improvement/cap/lifetime/window.yaml b/..._us/parameters/gov/irs/credits/energy_efficient_home_improvement/cap/lifetime/window.yaml
@@ -5,7 +5,6 @@ values:
   2023-01-01: .inf
 metadata:
   unit: currency-USD
-  name: energy_efficient_home_improvement_credit_lifetime_window_cap
   label: Energy efficient home improvement credit lifetime window limit
   reference:
     - title: 26 U.S.C. § 25C(b)(2)

diff --git a/policyengine_us/parameters/gov/irs/credits/energy_efficient_home_improvement/in_effect.yaml b/policyengine_us/parameters/gov/irs/credits/energy_efficient_home_improvement/in_effect.yaml
@@ -7,7 +7,6 @@ values:
   # Pre-Infation Reduction Act law terminated it on 2022-01-01.
   # However, the Inflation Reduction Act extended it retroactively.
 metadata:
-  name: energy_efficient_home_improvement_credit_in_effect
   label: Energy efficient home improvement tax credit in effect
   reference:
     - title: 26 U.S.C. § 25C(g)

diff --git a/...ers/gov/irs/credits/energy_efficient_home_improvement/qualified_expenditures/credits.yaml b/...ers/gov/irs/credits/energy_efficient_home_improvement/qualified_expenditures/credits.yaml
@@ -25,7 +25,6 @@ values:
     - capped_qualified_furnace_or_hot_water_boiler_credit
     - capped_home_energy_audit_credit
 metadata:
-  name: energy_efficient_home_improvement_credit_qualifying_energy_efficiency_improvements
   label: Energy efficiency improvements that qualify for energy efficient home improvement credit
   reference:
     - title: 26 U.S.C. § 25C(g)

diff --git a/...ovement/qualified_expenditures/heat_pump_heat_pump_water_heater_biomass_stove_boiler.yaml b/...ovement/qualified_expenditures/heat_pump_heat_pump_water_heater_biomass_stove_boiler.yaml
@@ -11,7 +11,6 @@ values:
     - heat_pump_water_heater
     - biomass_stove_boiler
 metadata:
-  name: energy_efficient_home_improvement_credit_qualifying_heat_pump_heat_pump_water_heater_biomass_stove_boiler_expenditures
   label: Expenditures on heat pump water heaters, heat pumps, and biomass stovers and boilers that qualify for energy efficient home improvement credit
   reference:
     - title: 26 U.S.C. § 25C(d)(3)

diff --git a/...parameters/gov/irs/credits/energy_efficient_home_improvement/rates/home_energy_audit.yaml b/...parameters/gov/irs/credits/energy_efficient_home_improvement/rates/home_energy_audit.yaml
@@ -5,7 +5,6 @@ values:
   2023-01-01: 0.3
 metadata:
   unit: /1
-  name: energy_efficient_home_improvement_credit_audit_rate
   label: Energy efficient home improvement credit rate on home energy audits
   reference:
     - title: Inflation Reduction Act, Part 3, Section 13301 (b)

diff --git a/...e_us/parameters/gov/irs/credits/energy_efficient_home_improvement/rates/improvements.yaml b/...e_us/parameters/gov/irs/credits/energy_efficient_home_improvement/rates/improvements.yaml
@@ -5,7 +5,6 @@ values:
   2023-01-01: 0.3
 metadata:
   unit: /1
-  name: energy_efficient_home_improvement_credit_improvements_rate
   label: Energy efficient home improvement credit rate on improvements
   reference:
     - title: 26 U.S.C. § 25C(a)(1)

diff --git a/...ngine_us/parameters/gov/irs/credits/energy_efficient_home_improvement/rates/property.yaml b/...ngine_us/parameters/gov/irs/credits/energy_efficient_home_improvement/rates/property.yaml
@@ -5,7 +5,6 @@ values:
   2023-01-01: 0.3
 metadata:
   unit: /1
-  name: energy_efficient_home_improvement_credit_property_rate
   label: Energy efficient home improvement credit rate on property
   reference:
     - title: 26 U.S.C. § 25C(a)(2)

diff --git a/policyengine_us/parameters/gov/irs/credits/premium_tax_credit/phase_out/ending_rate.yaml b/policyengine_us/parameters/gov/irs/credits/premium_tax_credit/phase_out/ending_rate.yaml
@@ -48,7 +48,6 @@ metadata:
   type: single_amount
   rate_unit: /1
   threshold_unit: currency-USD
-  name: ptc_phase_out_end_rate
   reference:
     - title: 26 U.S. Code § 36B - Refundable credit for coverage under a qualified health plan
       href: https://www.law.cornell.edu/uscode/text/26/36B
diff --git a/policyengine_us/parameters/gov/irs/credits/premium_tax_credit/phase_out/starting_rate.yaml b/policyengine_us/parameters/gov/irs/credits/premium_tax_credit/phase_out/starting_rate.yaml
@@ -48,7 +48,6 @@ metadata:
   type: single_amount
   rate_unit: /1
   threshold_unit: currency-USD
-  name: ptc_phase_out_start_rate
   reference:
     - title: 26 U.S. Code § 36B - Refundable credit for coverage under a qualified health plan
       href: https://www.law.cornell.edu/uscode/text/26/36B
diff --git a/policyengine_us/parameters/gov/irs/credits/recovery_rebate_credit/arpa/max/adult.yaml b/policyengine_us/parameters/gov/irs/credits/recovery_rebate_credit/arpa/max/adult.yaml
@@ -6,7 +6,6 @@ values:
 metadata:
   unit: currency-USD
   period: year
-  name: rrc_arpa_adult_max
   label: ARPA Recovery Rebate Credit maximum amount (non-dependent adults)
   reference:
     - title: 26 U.S. Code § 6428B(a)(1)

diff --git a/policyengine_us/parameters/gov/irs/credits/recovery_rebate_credit/arpa/max/dependent.yaml b/policyengine_us/parameters/gov/irs/credits/recovery_rebate_credit/arpa/max/dependent.yaml
@@ -6,7 +6,6 @@ values:
 metadata:
   unit: currency-USD
   period: year
-  name: rrc_arpa_dependent_max
   label: ARPA Recovery Rebate Credit maximum amount (dependent children)
   reference:
     - title: 26 U.S. Code § 6428B(a)(2)

diff --git a/policyengine_us/parameters/gov/irs/credits/recovery_rebate_credit/arpa/phase_out/length.yaml b/policyengine_us/parameters/gov/irs/credits/recovery_rebate_credit/arpa/phase_out/length.yaml
@@ -14,7 +14,6 @@ metadata:
   period: year
   breakdown:
     - filing_status
-  name: rrc_arpa_phase_out_length
   label: ARPA Recovery Rebate Credit phase-out length
   reference:
     - title: 26 U.S. Code § 6428B(c)

diff --git a/...engine_us/parameters/gov/irs/credits/recovery_rebate_credit/arpa/phase_out/threshold.yaml b/...engine_us/parameters/gov/irs/credits/recovery_rebate_credit/arpa/phase_out/threshold.yaml
@@ -24,7 +24,6 @@ metadata:
   period: year
   breakdown:
     - filing_status
-  name: rrc_arpa_phase_out_threshold
   label: ARPA Recovery Rebate Credit phase-out starting threshold
   reference:
     - title: 26 U.S. Code § 6428B(c)

diff --git a/policyengine_us/parameters/gov/irs/credits/recovery_rebate_credit/caa/max/adult.yaml b/policyengine_us/parameters/gov/irs/credits/recovery_rebate_credit/caa/max/adult.yaml
@@ -6,7 +6,6 @@ values:
 metadata:
   unit: currency-USD
   period: year
-  name: rrc_caa_adult_max
   label: CAA Recovery Rebate Credit maximum amount (non-dependent adults)
   reference:
     - title: 26 U.S. Code § 6428A(a)(1)

diff --git a/policyengine_us/parameters/gov/irs/credits/recovery_rebate_credit/caa/max/child.yaml b/policyengine_us/parameters/gov/irs/credits/recovery_rebate_credit/caa/max/child.yaml
@@ -6,7 +6,6 @@ values:
 metadata:
   unit: currency-USD
   period: year
-  name: rrc_caa_child_max
   label: CAA Recovery Rebate Credit maximum amount (dependent children)
   reference:
     - title: 26 U.S. Code § 6428A(a)(2)

diff --git a/policyengine_us/parameters/gov/irs/credits/recovery_rebate_credit/caa/phase_out/rate.yaml b/policyengine_us/parameters/gov/irs/credits/recovery_rebate_credit/caa/phase_out/rate.yaml
@@ -5,7 +5,6 @@ values:
   2021-01-01: 0
 metadata:
   unit: /1
-  name: rrc_caa_phase_out_rate
   label: CAA Recovery Rebate Credit phase-out rate
   reference:
     - title: 26 U.S. Code § 6428A(c)

diff --git a/...yengine_us/parameters/gov/irs/credits/recovery_rebate_credit/caa/phase_out/threshold.yaml b/...yengine_us/parameters/gov/irs/credits/recovery_rebate_credit/caa/phase_out/threshold.yaml
@@ -24,7 +24,6 @@ metadata:
   period: year
   breakdown:
     - filing_status
-  name: rrc_second_phase_out_threshold
   label: Second Recovery Rebate Credit phase-out starting threshold
   reference:
     - title: 26 U.S. Code § 6428A(c)

diff --git a/policyengine_us/parameters/gov/irs/credits/recovery_rebate_credit/cares/max/adult.yaml b/policyengine_us/parameters/gov/irs/credits/recovery_rebate_credit/cares/max/adult.yaml
@@ -6,7 +6,6 @@ values:
 metadata:
   unit: currency-USD
   period: year
-  name: rrc_cares_adult_max
   label: CARES Recovery Rebate Credit maximum amount (non-dependent adults)
   reference:
     - title: 26 U.S. Code § 6428(a)(1)

diff --git a/policyengine_us/parameters/gov/irs/credits/recovery_rebate_credit/cares/max/child.yaml b/policyengine_us/parameters/gov/irs/credits/recovery_rebate_credit/cares/max/child.yaml
@@ -6,7 +6,6 @@ values:
 metadata:
   unit: currency-USD
   period: year
-  name: rrc_cares_child_max
   label: CARES Recovery Rebate Credit maximum amount (dependent children)
   reference:
     - title: 26 U.S. Code § 6428(a)(2)

diff --git a/policyengine_us/parameters/gov/irs/credits/recovery_rebate_credit/cares/phase_out/rate.yaml b/policyengine_us/parameters/gov/irs/credits/recovery_rebate_credit/cares/phase_out/rate.yaml
@@ -5,7 +5,6 @@ values:
   2021-01-01: 0
 metadata:
   unit: /1
-  name: rrc_cares_phase_out_rate
   label: CARES Recovery Rebate Credit phase-out rate
   reference:
     - title: 26 U.S. Code § 6428(c)

diff --git a/...ngine_us/parameters/gov/irs/credits/recovery_rebate_credit/cares/phase_out/threshold.yaml b/...ngine_us/parameters/gov/irs/credits/recovery_rebate_credit/cares/phase_out/threshold.yaml
@@ -24,7 +24,6 @@ metadata:
   period: year
   breakdown:
     - filing_status
-  name: rrc_cares_phase_out_threshold
   label: CARES Recovery Rebate Credit phase-out starting threshold
   reference:
     - title: 26 U.S. Code § 6428(c)

diff --git a/...yengine_us/parameters/gov/irs/credits/residential_clean_energy/applicable_percentage.yaml b/...yengine_us/parameters/gov/irs/credits/residential_clean_energy/applicable_percentage.yaml
@@ -8,7 +8,6 @@ values:
   2035-01-01: 0
 metadata:
   unit: /1
-  name: residential_clean_energy_credit_applicable_percentage
   label: Residential Clean Energy Credit applicable percentage
   reference:
     - title: 26 U.S.C. § 25D(g)

diff --git a/policyengine_us/parameters/gov/irs/credits/residential_clean_energy/elements.yaml b/policyengine_us/parameters/gov/irs/credits/residential_clean_energy/elements.yaml
@@ -18,7 +18,6 @@ values:
     - qualified_battery_storage_technology_expenditures
 metadata:
   unit: list
-  name: residential_clean_energy_credit_elements
   label: Expenditure elements of the Residential Clean Energy Credit
   reference:
     - title: 26 U.S. Code § 25D - Residential energy efficient property (a)

diff --git a/...cyengine_us/parameters/gov/irs/credits/residential_clean_energy/fuel_cell_cap_per_kw.yaml b/...cyengine_us/parameters/gov/irs/credits/residential_clean_energy/fuel_cell_cap_per_kw.yaml
@@ -3,7 +3,6 @@ values:
   2017-01-01: 1_000
 metadata:
   unit: currency-USD
-  name: residential_clean_energy_credit_fuel_cell_cap_per_kw
   label: Residential Clean Energy Credit fuel cell cap per kilowatt
   reference:
     - title: 26 U.S.C. § 25D(b)(1)

diff --git a/policyengine_us/parameters/gov/irs/deductions/standard/aged_or_blind/age_threshold.yaml b/policyengine_us/parameters/gov/irs/deductions/standard/aged_or_blind/age_threshold.yaml
@@ -4,6 +4,5 @@ values:
     value: 65
 metadata:
   unit: year
-  name: aged_blind_std_age
   label: Aged standard deduction age
 
diff --git a/policyengine_us/parameters/gov/irs/payroll/medicare/additional/exclusion.yaml b/policyengine_us/parameters/gov/irs/payroll/medicare/additional/exclusion.yaml
@@ -11,7 +11,6 @@ SURVIVING_SPOUSE:
   2013-01-01: 200_000
 metadata:
   unit: currency-USD
-  name: additional_medicare_rate_exclusion
   label: Additional Medicare Tax rate exclusion
   reference:
     # Employee:

diff --git a/policyengine_us/parameters/simulation/disabled_programs.yaml b/policyengine_us/parameters/simulation/disabled_programs.yaml
@@ -6,5 +6,4 @@ values:
   - spm_unit_wic
 metadata:
   unit: list
-  name: disabled_programs
   label: Disabled programs