PolicyEngine · MaxGhenis · Mar 2, 2026
diff --git a/changelog.d/529-batch-3.added.md b/changelog.d/529-batch-3.added.md
@@ -0,0 +1 @@
+Add 529 plan contribution deductions/credits for Oklahoma, Oregon, Pennsylvania, Utah, Virginia, Vermont, and Wisconsin.
diff --git a/policyengine_us/parameters/gov/states/ok/tax/income/agi/subtractions/plan_529/cap.yaml b/policyengine_us/parameters/gov/states/ok/tax/income/agi/subtractions/plan_529/cap.yaml
@@ -0,0 +1,23 @@
+description: Oklahoma caps the 529 plan contributions deduction at this amount.
+metadata:
+  label: Oklahoma 529 plan contribution deduction cap
+  period: year
+  unit: currency-USD
+  breakdown:
+  - filing_status
+  reference:
+  - title: Oklahoma 529 Plan FAQ
+    href: https://www.oklahoma529.com/resources/faq/
+  - title: 2024 Oklahoma Form 511 Instructions
+    href: https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/individuals/current/511-Pkt.pdf#page=16
+
+JOINT:
+  2021-01-01: 20_000
+SURVIVING_SPOUSE:
+  2021-01-01: 20_000
+SINGLE:
+  2021-01-01: 10_000
+HEAD_OF_HOUSEHOLD:
+  2021-01-01: 10_000
+SEPARATE:
+  2021-01-01: 10_000
diff --git a/policyengine_us/parameters/gov/states/ok/tax/income/agi/subtractions/subtractions.yaml b/policyengine_us/parameters/gov/states/ok/tax/income/agi/subtractions/subtractions.yaml
@@ -5,6 +5,7 @@ values:
     - taxable_social_security
     - ok_pension_subtraction
     - ok_military_retirement_exclusion
+    - ok_529_plan_deduction
 
 metadata:
   unit: list

diff --git a/policyengine_us/parameters/gov/states/or/tax/income/credits/plan_529/max_credit.yaml b/policyengine_us/parameters/gov/states/or/tax/income/credits/plan_529/max_credit.yaml
@@ -0,0 +1,33 @@
+description: Oregon caps the 529 plan contribution tax credit at this amount.
+metadata:
+  label: Oregon 529 plan contribution credit maximum
+  period: year
+  unit: currency-USD
+  breakdown:
+  - filing_status
+  reference:
+  - title: Oregon Department of Revenue - Tax benefits for families
+    href: https://www.oregon.gov/dor/programs/individuals/pages/credits.aspx
+  - title: ORS 315.643
+    href: https://oregon.public.law/statutes/ors_315.643
+
+JOINT:
+  2020-01-01: 300
+  2025-01-01: 360
+  2026-01-01: 380
+SURVIVING_SPOUSE:
+  2020-01-01: 300
+  2025-01-01: 360
+  2026-01-01: 380
+SINGLE:
+  2020-01-01: 150
+  2025-01-01: 180
+  2026-01-01: 190
+HEAD_OF_HOUSEHOLD:
+  2020-01-01: 150
+  2025-01-01: 180
+  2026-01-01: 190
+SEPARATE:
+  2020-01-01: 150
+  2025-01-01: 180
+  2026-01-01: 190
diff --git a/policyengine_us/parameters/gov/states/or/tax/income/credits/refundable.yaml b/policyengine_us/parameters/gov/states/or/tax/income/credits/refundable.yaml
@@ -4,15 +4,22 @@ values:
   - or_eitc
   - or_kicker
   - or_working_family_household_and_dependent_care_credit
+  2020-01-01:
+  - or_eitc
+  - or_kicker
+  - or_529_credit
+  - or_working_family_household_and_dependent_care_credit
   2023-01-01:
   - or_eitc
   - or_kicker
   - or_ctc
+  - or_529_credit
   - or_working_family_household_and_dependent_care_credit
   # Child Tax Credit legislation ends in 2029.
   2029-01-01:
   - or_eitc
   - or_kicker
+  - or_529_credit
   - or_working_family_household_and_dependent_care_credit
 metadata:
   unit: list

diff --git a/policyengine_us/parameters/gov/states/pa/tax/income/deductions/plan_529/cap.yaml b/policyengine_us/parameters/gov/states/pa/tax/income/deductions/plan_529/cap.yaml
@@ -0,0 +1,18 @@
+description: >
+  Pennsylvania caps the 529 plan contributions deduction per beneficiary
+  at this amount, which is tied to the federal annual gift tax exclusion.
+values:
+  2021-01-01: 15_000
+  2022-01-01: 16_000
+  2023-01-01: 17_000
+  2024-01-01: 18_000
+  2025-01-01: 19_000
+metadata:
+  unit: currency-USD
+  period: year
+  label: Pennsylvania 529 plan contribution deduction cap per beneficiary
+  reference:
+  - title: PA Revenue - What is the limit on a deduction to a 529 plan?
+    href: https://revenue-pa.custhelp.com/app/answers/detail/a_id/2208/~/what-is-the-limit-on-a-deduction-to-a-529-plan
+  - title: PA 529 Plan FAQs
+    href: https://www.pa529.com/faqs/
diff --git a/policyengine_us/parameters/gov/states/ut/tax/income/credits/non_refundable.yaml b/policyengine_us/parameters/gov/states/ut/tax/income/credits/non_refundable.yaml
@@ -33,6 +33,7 @@ values:
   - ut_retirement_credit
   - ut_ss_benefits_credit
   - ut_at_home_parent_credit
+  - ut_529_plan_credit
 
   2024-01-01:
   - ut_eitc
@@ -41,3 +42,4 @@ values:
   - ut_at_home_parent_credit
   - ut_ctc
   - ut_military_retirement_credit
+  - ut_529_plan_credit
diff --git a/policyengine_us/parameters/gov/states/ut/tax/income/credits/plan_529/cap.yaml b/policyengine_us/parameters/gov/states/ut/tax/income/credits/plan_529/cap.yaml
@@ -0,0 +1,40 @@
+description: >
+  Utah caps the 529 plan contribution amount eligible for the state tax
+  credit at this amount per beneficiary.
+metadata:
+  label: Utah 529 plan contribution credit cap per beneficiary
+  period: year
+  unit: currency-USD
+  breakdown:
+  - filing_status
+  reference:
+  - title: Utah state tax benefits information - my529
+    href: https://my529.org/utah-state-tax-benefits-information/
+  - title: TC-40A Supplemental Schedule Instructions - my529
+    href: https://incometax.utah.gov/credits/my529
+
+JOINT:
+  2022-01-01: 4_260
+  2023-01-01: 4_580
+  2024-01-01: 4_820
+  2025-01-01: 4_980
+SURVIVING_SPOUSE:
+  2022-01-01: 4_260
+  2023-01-01: 4_580
+  2024-01-01: 4_820
+  2025-01-01: 4_980
+SINGLE:
+  2022-01-01: 2_130
+  2023-01-01: 2_290
+  2024-01-01: 2_410
+  2025-01-01: 2_490
+HEAD_OF_HOUSEHOLD:
+  2022-01-01: 2_130
+  2023-01-01: 2_290
+  2024-01-01: 2_410
+  2025-01-01: 2_490
+SEPARATE:
+  2022-01-01: 2_130
+  2023-01-01: 2_290
+  2024-01-01: 2_410
+  2025-01-01: 2_490
diff --git a/policyengine_us/parameters/gov/states/ut/tax/income/credits/plan_529/rate.yaml b/policyengine_us/parameters/gov/states/ut/tax/income/credits/plan_529/rate.yaml
@@ -0,0 +1,15 @@
+description: Utah applies this tax credit rate to eligible 529 plan contributions.
+values:
+  2022-01-01: 0.0485
+  2023-01-01: 0.0465
+  2024-01-01: 0.0455
+  2025-01-01: 0.045
+metadata:
+  unit: /1
+  period: year
+  label: Utah 529 plan contribution credit rate
+  reference:
+  - title: Utah state tax benefits information - my529
+    href: https://my529.org/utah-state-tax-benefits-information/
+  - title: TC-40A Supplemental Schedule Instructions - my529
+    href: https://incometax.utah.gov/credits/my529
diff --git a/policyengine_us/parameters/gov/states/va/tax/income/subtractions/plan_529/cap.yaml b/policyengine_us/parameters/gov/states/va/tax/income/subtractions/plan_529/cap.yaml
@@ -0,0 +1,17 @@
+description: >
+  Virginia caps the 529 plan contributions deduction at this amount per
+  account per year. Taxpayers age 70 and over may deduct the entire
+  amount contributed.
+values:
+  2021-01-01: 4_000
+metadata:
+  unit: currency-USD
+  period: year
+  label: Virginia 529 plan contribution deduction cap per account
+  reference:
+  - title: Virginia Tax - Deductions
+    href: https://www.tax.virginia.gov/deductions
+  - title: Code of Virginia 58.1-322.02
+    href: https://law.lis.virginia.gov/vacodefull/title58.1/chapter3/article2/
+  - title: 2024 Form 760 Instructions - Subtractions, Certification Number 34
+    href: https://www.tax.virginia.gov/sites/default/files/vatax-pdf/2024-760-instructions.pdf#page=24
diff --git a/policyengine_us/parameters/gov/states/va/tax/income/subtractions/subtractions.yaml b/policyengine_us/parameters/gov/states/va/tax/income/subtractions/subtractions.yaml
@@ -9,7 +9,7 @@ values:
     - unemployment_compensation # Certification Number 37
     - va_federal_state_employees_subtraction # Certification Number 39
     - va_military_benefit_subtraction # Certification Number 60
-    - investment_in_529_plan # Certification Number 34
+    - va_529_plan_deduction # Certification Number 34
     - va_age_deduction # Certification Number 4
     - taxable_social_security # Certification Number 5
 

diff --git a/policyengine_us/parameters/gov/states/vt/tax/income/credits/non_refundable.yaml b/policyengine_us/parameters/gov/states/vt/tax/income/credits/non_refundable.yaml
@@ -2,6 +2,7 @@ description: Vermont non-refundable tax credits.
 values:
   2021-01-01:
     - vt_charitable_contribution_credit
+    - vt_529_plan_credit
 metadata:
   unit: list
   label: Vermont non-refundable tax credits

diff --git a/policyengine_us/parameters/gov/states/vt/tax/income/credits/plan_529/cap.yaml b/policyengine_us/parameters/gov/states/vt/tax/income/credits/plan_529/cap.yaml
@@ -0,0 +1,25 @@
+description: >
+  Vermont caps the 529 plan contribution amount eligible for the state tax
+  credit at this amount per beneficiary.
+metadata:
+  label: Vermont 529 plan contribution credit cap per beneficiary
+  period: year
+  unit: currency-USD
+  breakdown:
+  - filing_status
+  reference:
+  - title: Vermont Tax Credits and Adjustments for Individuals
+    href: https://tax.vermont.gov/individuals/personal-income-tax/tax-credits
+  - title: VT529 Benefits
+    href: https://vt529.org/benefits
+
+JOINT:
+  2021-01-01: 5_000
+SURVIVING_SPOUSE:
+  2021-01-01: 5_000
+SINGLE:
+  2021-01-01: 2_500
+HEAD_OF_HOUSEHOLD:
+  2021-01-01: 2_500
+SEPARATE:
+  2021-01-01: 2_500
diff --git a/policyengine_us/parameters/gov/states/vt/tax/income/credits/plan_529/rate.yaml b/policyengine_us/parameters/gov/states/vt/tax/income/credits/plan_529/rate.yaml
@@ -0,0 +1,12 @@
+description: Vermont applies this credit rate to eligible 529 plan contributions.
+values:
+  2021-01-01: 0.10
+metadata:
+  unit: /1
+  period: year
+  label: Vermont 529 plan contribution credit rate
+  reference:
+  - title: Vermont Tax Credits and Adjustments for Individuals
+    href: https://tax.vermont.gov/individuals/personal-income-tax/tax-credits
+  - title: VT529 Benefits
+    href: https://vt529.org/benefits
diff --git a/policyengine_us/parameters/gov/states/wi/tax/income/subtractions/plan_529/cap.yaml b/policyengine_us/parameters/gov/states/wi/tax/income/subtractions/plan_529/cap.yaml
@@ -0,0 +1,40 @@
+description: >
+  Wisconsin caps the 529 plan contributions deduction per beneficiary
+  at this amount. The married filing separately cap is half the regular cap.
+metadata:
+  label: Wisconsin 529 plan contribution deduction cap per beneficiary
+  period: year
+  unit: currency-USD
+  breakdown:
+  - filing_status
+  reference:
+  - title: Edvest 529 Tax Benefits
+    href: https://www.edvest.com/learn/tax-benefits/
+  - title: DFI Wisconsin 529 College Savings Program
+    href: https://dfi.wi.gov/Pages/EducationalServices/CollegeSavingsCareerPlanning/CollegeSavingsProgram.aspx
+
+JOINT:
+  2021-01-01: 3_560
+  2024-01-01: 5_000
+  2025-01-01: 5_130
+  2026-01-01: 5_280
+SURVIVING_SPOUSE:
+  2021-01-01: 3_560
+  2024-01-01: 5_000
+  2025-01-01: 5_130
+  2026-01-01: 5_280
+SINGLE:
+  2021-01-01: 3_560
+  2024-01-01: 5_000
+  2025-01-01: 5_130
+  2026-01-01: 5_280
+HEAD_OF_HOUSEHOLD:
+  2021-01-01: 3_560
+  2024-01-01: 5_000
+  2025-01-01: 5_130
+  2026-01-01: 5_280
+SEPARATE:
+  2021-01-01: 1_780
+  2024-01-01: 2_500
+  2025-01-01: 2_560
+  2026-01-01: 2_640
diff --git a/policyengine_us/parameters/gov/states/wi/tax/income/subtractions/sources.yaml b/policyengine_us/parameters/gov/states/wi/tax/income/subtractions/sources.yaml
@@ -6,11 +6,13 @@ values:
     - wi_capital_gain_loss_subtraction
     - wi_childcare_expense_subtraction
     - wi_retirement_income_subtraction
+    - wi_529_plan_deduction
   2022-01-01:
     - wi_unemployment_compensation_subtraction
     - tax_unit_taxable_social_security
     - wi_capital_gain_loss_subtraction
     - wi_retirement_income_subtraction
+    - wi_529_plan_deduction
 
 metadata:
   unit: list

diff --git a/policyengine_us/tests/policy/baseline/gov/states/ok/tax/income/ok_529_plan_deduction.yaml b/policyengine_us/tests/policy/baseline/gov/states/ok/tax/income/ok_529_plan_deduction.yaml
@@ -0,0 +1,44 @@
+- name: Single filer below cap
+  period: 2024
+  input:
+    state_code: OK
+    filing_status: SINGLE
+    investment_in_529_plan_indv: 5_000
+  output:
+    ok_529_plan_deduction: 5_000
+
+- name: Single filer above cap
+  period: 2024
+  input:
+    state_code: OK
+    filing_status: SINGLE
+    investment_in_529_plan_indv: 15_000
+  output:
+    ok_529_plan_deduction: 10_000
+
+- name: Joint filer below cap
+  period: 2024
+  input:
+    state_code: OK
+    filing_status: JOINT
+    investment_in_529_plan_indv: 15_000
+  output:
+    ok_529_plan_deduction: 15_000
+
+- name: Joint filer above cap
+  period: 2024
+  input:
+    state_code: OK
+    filing_status: JOINT
+    investment_in_529_plan_indv: 25_000
+  output:
+    ok_529_plan_deduction: 20_000
+
+- name: Zero contributions
+  period: 2024
+  input:
+    state_code: OK
+    filing_status: SINGLE
+    investment_in_529_plan_indv: 0
+  output:
+    ok_529_plan_deduction: 0
diff --git a/policyengine_us/tests/policy/baseline/gov/states/or/tax/income/credits/or_529_credit.yaml b/policyengine_us/tests/policy/baseline/gov/states/or/tax/income/credits/or_529_credit.yaml
@@ -0,0 +1,44 @@
+- name: Single filer contribution below max credit
+  period: 2025
+  input:
+    state_code: OR
+    filing_status: SINGLE
+    investment_in_529_plan_indv: 100
+  output:
+    or_529_credit: 100
+
+- name: Single filer contribution above max credit
+  period: 2025
+  input:
+    state_code: OR
+    filing_status: SINGLE
+    investment_in_529_plan_indv: 500
+  output:
+    or_529_credit: 180
+
+- name: Joint filer contribution above max credit
+  period: 2025
+  input:
+    state_code: OR
+    filing_status: JOINT
+    investment_in_529_plan_indv: 1_000
+  output:
+    or_529_credit: 360
+
+- name: Joint filer contribution below max credit
+  period: 2025
+  input:
+    state_code: OR
+    filing_status: JOINT
+    investment_in_529_plan_indv: 200
+  output:
+    or_529_credit: 200
+
+- name: Zero contributions
+  period: 2025
+  input:
+    state_code: OR
+    filing_status: SINGLE
+    investment_in_529_plan_indv: 0
+  output:
+    or_529_credit: 0
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1 @@
		Add 529 plan contribution deductions/credits for Oklahoma, Oregon, Pennsylvania, Utah, Virginia, Vermont, and Wisconsin.