PolicyEngine · hua7450 · Feb 24, 2026 · Feb 25, 2026 · Feb 25, 2026 · Feb 26, 2026
diff --git a/changelog.d/hua7450-issue7482.changed.md b/changelog.d/hua7450-issue7482.changed.md
@@ -0,0 +1 @@
+Backdate CT TANF parameters.
diff --git a/policyengine_us/parameters/gov/states/ct/dss/tfa/income/deduction/child_support.yaml b/policyengine_us/parameters/gov/states/ct/dss/tfa/income/deduction/child_support.yaml
@@ -1,14 +1,14 @@
 description: Connecticut deducts up to this amount of child support received from the gross unearned income under the Temporary Family Assistance program.
 
 values:
-  2023-10-01: 50
+  2017-10-01: 50
 
 metadata:
   unit: currency-USD
   period: month
   label: Connecticut TFA child support deduction
   reference:
-    - title: State of Connecticut TANF State Plan 2024-2026
+    - title: State of Connecticut TANF State Plan 2024-2026, Child Support Pass-Through
       href: https://portal.ct.gov/dss/-/media/departments-and-agencies/dss/state-plans-and-federal-reports/tanf-state-plan/ct-tanf-state-plan-2024---2026---41524-amendment.pdf#page=10
-    - title: Connecticut General Statutes § 17b-112
+    - title: Connecticut General Statutes § 17b-112(d)
       href: https://cga.ct.gov/current/pub/chap_319s.htm#sec_17b-112
diff --git a/policyengine_us/parameters/gov/states/ct/dss/tfa/income/deduction/new_applicant/amount.yaml b/policyengine_us/parameters/gov/states/ct/dss/tfa/income/deduction/new_applicant/amount.yaml
@@ -1,14 +1,14 @@
 description: Connecticut deducts up to this flat amount per person from the gross earned income under the Temporary Family Assistance program.
 
 values:
-  2023-10-01: 90
+  2017-10-01: 90
 
 metadata:
   unit: currency-USD
   period: month
   label: Connecticut TFA new applicants gross earning deduction
   reference:
-    - title: State of Connecticut TANF State Plan 2024-2026
+    - title: State of Connecticut TANF State Plan 2024-2026, Earned Income Deduction
       href: https://portal.ct.gov/dss/-/media/departments-and-agencies/dss/state-plans-and-federal-reports/tanf-state-plan/ct-tanf-state-plan-2024---2026---41524-amendment.pdf#page=10
-    - title: Connecticut General Statutes § 17b-112
+    - title: Connecticut General Statutes § 17b-112(b)
       href: https://cga.ct.gov/current/pub/chap_319s.htm#sec_17b-112
diff --git a/policyengine_us/parameters/gov/states/ct/dss/tfa/income/recipient/income_limit_rate.yaml b/policyengine_us/parameters/gov/states/ct/dss/tfa/income/recipient/income_limit_rate.yaml
@@ -1,15 +1,15 @@
-description: Connecticut limits the Temporary Family Assistance program to existing applicant with income below this percentage of federal poverty level.
+description: Connecticut limits existing recipients' gross earned income to this share of the federal poverty level under the Temporary Family Assistance program.
 
 values:
-  2018-01-01: 1
+  1997-01-01: 1
   2024-01-01: 2.3
 
 metadata:
   unit: /1
   period: month
   label: Connecticut TFA income limit fpg rate
   reference:
-    - title: State of Connecticut TANF State Plan 2024-2026
+    - title: State of Connecticut TANF State Plan 2024-2026, Recipient Income Eligibility
       href: https://portal.ct.gov/dss/-/media/departments-and-agencies/dss/state-plans-and-federal-reports/tanf-state-plan/ct-tanf-state-plan-2024---2026---41524-amendment.pdf#page=10
-    - title: Connecticut General Statutes § 17b-112
+    - title: Connecticut General Statutes § 17b-112(d)
       href: https://cga.ct.gov/current/pub/chap_319s.htm#sec_17b-112
diff --git a/policyengine_us/parameters/gov/states/ct/dss/tfa/payment/amount.yaml b/policyengine_us/parameters/gov/states/ct/dss/tfa/payment/amount.yaml
diff --git a/policyengine_us/parameters/gov/states/ct/dss/tfa/payment/high_earnings/in_effect.yaml b/policyengine_us/parameters/gov/states/ct/dss/tfa/payment/high_earnings/in_effect.yaml
@@ -0,0 +1,15 @@
+description: Connecticut uses this indicator to determine whether the high-earnings benefit reduction applies under the Temporary Family Assistance program.
+
+values:
+  1997-01-01: false
+  2024-01-01: true
+
+metadata:
+  unit: bool
+  period: month
+  label: Connecticut TFA high earnings reduction in effect
+  reference:
+    - title: State of Connecticut TANF State Plan 2024-2026, High Earnings Provision
+      href: https://portal.ct.gov/dss/-/media/departments-and-agencies/dss/state-plans-and-federal-reports/tanf-state-plan/ct-tanf-state-plan-2024---2026---41524-amendment.pdf#page=10
+    - title: Connecticut General Statutes § 17b-112(d)
+      href: https://cga.ct.gov/current/pub/chap_319s.htm#sec_17b-112
diff --git a/policyengine_us/parameters/gov/states/ct/dss/tfa/payment/high_earnings/rate.yaml b/policyengine_us/parameters/gov/states/ct/dss/tfa/payment/high_earnings/rate.yaml
@@ -1,14 +1,14 @@
-description: Connecticut considers households with gross earned income above this percentage of federal poverty level as high earners under the Temporary Family Assistance program.
+description: Connecticut sets this share of the federal poverty level as the high-earnings threshold under the Temporary Family Assistance program.
 
 values:
-  2023-10-01: 1.71
+  2024-01-01: 1.71
 
 metadata:
   unit: /1
   period: month
   label: Connecticut TFA high earning fpg rate
   reference:
-    - title: State of Connecticut TANF State Plan 2024-2026
+    - title: State of Connecticut TANF State Plan 2024-2026, High Earnings Threshold
       href: https://portal.ct.gov/dss/-/media/departments-and-agencies/dss/state-plans-and-federal-reports/tanf-state-plan/ct-tanf-state-plan-2024---2026---41524-amendment.pdf#page=10
-    - title: Connecticut General Statutes § 17b-112
+    - title: Connecticut General Statutes § 17b-112(d)
       href: https://cga.ct.gov/current/pub/chap_319s.htm#sec_17b-112
diff --git a/policyengine_us/parameters/gov/states/ct/dss/tfa/payment/high_earnings/reduction_rate.yaml b/policyengine_us/parameters/gov/states/ct/dss/tfa/payment/high_earnings/reduction_rate.yaml
@@ -1,14 +1,14 @@
-description: Connecticut reduces the benefit amount by this percentage for household with high gross earnings under the Temporary Family Assistance program.
+description: Connecticut deducts this share from the benefit amount for high-earning households under the Temporary Family Assistance program.
 
 values:
-  2023-10-01: 0.2
+  2024-01-01: 0.2
 
 metadata:
   unit: /1
   period: month
   label: Connecticut TFA benefit reduction rate
   reference:
-    - title: State of Connecticut TANF State Plan 2024-2026
+    - title: State of Connecticut TANF State Plan 2024-2026, High Earnings Benefit Reduction
       href: https://portal.ct.gov/dss/-/media/departments-and-agencies/dss/state-plans-and-federal-reports/tanf-state-plan/ct-tanf-state-plan-2024---2026---41524-amendment.pdf#page=10
-    - title: Connecticut General Statutes § 17b-112
+    - title: Connecticut General Statutes § 17b-112(d)
       href: https://cga.ct.gov/current/pub/chap_319s.htm#sec_17b-112
diff --git a/policyengine_us/parameters/gov/states/ct/dss/tfa/payment/housing_subsidy_rate.yaml b/policyengine_us/parameters/gov/states/ct/dss/tfa/payment/housing_subsidy_rate.yaml
@@ -0,0 +1,14 @@
+description: Connecticut sets this share of the payment standard for households receiving a housing subsidy under the Temporary Family Assistance program.
+
+values:
+  1995-07-01: 0.92
+
+metadata:
+  unit: /1
+  period: month
+  label: Connecticut TFA housing subsidy rate
+  reference:
+    - title: Connecticut General Statutes § 17b-104(d)
+      href: https://cga.ct.gov/current/pub/chap_319s.htm#sec_17b-104
+    - title: DSS Program Standards Chart, TFA Grant with Housing Subsidy column
+      href: https://portal.ct.gov/dss/-/media/departments-and-agencies/dss/fact-sheets-and-issue-briefs/fact-sheets/dss-program-standards-chart.pdf
diff --git a/policyengine_us/parameters/gov/states/ct/dss/tfa/payment/max_unit_size.yaml b/policyengine_us/parameters/gov/states/ct/dss/tfa/payment/max_unit_size.yaml
@@ -1,12 +1,12 @@
-description: Connecticut caps household size at this value for Temporary Family Assistance payment calculations.
+description: Connecticut limits household size to this threshold for Temporary Family Assistance program payment calculations.
 
 metadata:
   unit: person
   period: year
   label: Connecticut TFA maximum unit size for payment calculation
   reference:
-    - title: State of Connecticut TANF State Plan 2024-2026
+    - title: CT TANF State Plan 2024-2026, Addendum A - Payment Standards Table
       href: https://portal.ct.gov/dss/-/media/departments-and-agencies/dss/state-plans-and-federal-reports/tanf-state-plan/ct-tanf-state-plan-2024---2026---41524-amendment.pdf#page=53
 
 values:
-  2023-10-01: 8
+  1997-01-01: 8
diff --git a/policyengine_us/parameters/gov/states/ct/dss/tfa/payment/need_standard_rate.yaml b/policyengine_us/parameters/gov/states/ct/dss/tfa/payment/need_standard_rate.yaml
@@ -1,14 +1,14 @@
-description: Connecticut applies this percentage of federal poverty level as need standard under the Temporary Family Assistance program.
+description: Connecticut sets this share of the federal poverty level as the need standard under the Temporary Family Assistance program.
 
 values:
-  2023-10-01: 0.55
+  2022-07-01: 0.55
 
 metadata:
   unit: /1
   period: month
   label: Connecticut TFA need standard fpg rate
   reference:
-    - title: State of Connecticut TANF State Plan 2024-2026
+    - title: State of Connecticut TANF State Plan 2024-2026, Standard of Need
       href: https://portal.ct.gov/dss/-/media/departments-and-agencies/dss/state-plans-and-federal-reports/tanf-state-plan/ct-tanf-state-plan-2024---2026---41524-amendment.pdf#page=10
     - title: Connecticut General Statutes § 17b-104(a)
       href: https://cga.ct.gov/current/pub/chap_319s.htm#sec_17b-104
diff --git a/policyengine_us/parameters/gov/states/ct/dss/tfa/payment/payment_standard_rate.yaml b/policyengine_us/parameters/gov/states/ct/dss/tfa/payment/payment_standard_rate.yaml
@@ -0,0 +1,16 @@
+description: Connecticut sets the payment standard at this share of the standard of need under the Temporary Family Assistance program.
+
+values:
+  2022-07-01: 0.73
+
+metadata:
+  unit: /1
+  period: month
+  label: Connecticut TFA payment standard rate
+  reference:
+    - title: Connecticut General Statutes § 17b-104(c)
+      href: https://cga.ct.gov/current/pub/chap_319s.htm#sec_17b-104
+    - title: "OLR Report 2023-R-0100: Benefits Cliffs, Payment Standard"
+      href: https://www.cga.ct.gov/2023/rpt/pdf/2023-R-0100.pdf#page=3
+    - title: DSS Program Standards Chart, TFA Payment Standard column
+      href: https://portal.ct.gov/dss/-/media/departments-and-agencies/dss/fact-sheets-and-issue-briefs/fact-sheets/dss-program-standards-chart.pdf
diff --git a/policyengine_us/parameters/gov/states/ct/dss/tfa/payment/regional/region_a/amount.yaml b/policyengine_us/parameters/gov/states/ct/dss/tfa/payment/regional/region_a/amount.yaml
@@ -0,0 +1,46 @@
+description: Connecticut provides this amount as the Region A payment standard under the Temporary Family Assistance program.
+
+metadata:
+  unit: currency-USD
+  period: month
+  breakdown:
+    - range(0, 9)
+  breakdown_labels:
+    - Household size
+  label: Connecticut TFA Region A payment amount
+  reference:
+    - title: State of Connecticut TANF State Plan 2021-2023
+      href: https://portal.ct.gov/dss/-/media/departments-and-agencies/dss/state-plans-and-federal-reports/tanf-state-plan/ct-tanf-plan-2021-2023--draft.pdf#page=57
+    - title: SSA POMS SI BOS00830.403 (Effective July 1, 2014)
+      href: https://secure.ssa.gov/poms.nsf/lnx/0500830403BOS
+    - title: SSA POMS SI BOS00830.403 (Effective July 1, 1995, archived)
+      href: https://web.archive.org/web/20111030193758/https://secure.ssa.gov/poms.nsf/lnx/0500830403BOS
+
+0:
+  # TANF program start; amounts from SSA POMS effective July 1, 1995
+  1997-01-01: 0
+  2014-07-01: 0
+1:
+  1997-01-01: 402
+  2014-07-01: 443
+2:
+  1997-01-01: 513
+  2014-07-01: 563
+3:
+  1997-01-01: 636
+  2014-07-01: 698
+4:
+  1997-01-01: 741
+  2014-07-01: 815
+5:
+  1997-01-01: 835
+  2014-07-01: 919
+6:
+  1997-01-01: 935
+  2014-07-01: 1_028
+7:
+  1997-01-01: 1_040
+  2014-07-01: 1_143
+8:
+  1997-01-01: 1_143
+  2014-07-01: 1_257
diff --git a/policyengine_us/parameters/gov/states/ct/dss/tfa/payment/regional/region_b/amount.yaml b/policyengine_us/parameters/gov/states/ct/dss/tfa/payment/regional/region_b/amount.yaml
@@ -0,0 +1,46 @@
+description: Connecticut provides this amount as the Region B payment standard under the Temporary Family Assistance program.
+
+metadata:
+  unit: currency-USD
+  period: month
+  breakdown:
+    - range(0, 9)
+  breakdown_labels:
+    - Household size
+  label: Connecticut TFA Region B payment amount
+  reference:
+    - title: State of Connecticut TANF State Plan 2021-2023
+      href: https://portal.ct.gov/dss/-/media/departments-and-agencies/dss/state-plans-and-federal-reports/tanf-state-plan/ct-tanf-plan-2021-2023--draft.pdf#page=57
+    - title: SSA POMS SI BOS00830.403 (Effective July 1, 2014)
+      href: https://secure.ssa.gov/poms.nsf/lnx/0500830403BOS
+    - title: SSA POMS SI BOS00830.403 (Effective July 1, 1995, archived)
+      href: https://web.archive.org/web/20111030193758/https://secure.ssa.gov/poms.nsf/lnx/0500830403BOS
+
+0:
+  # TANF program start; amounts from SSA POMS effective July 1, 1995
+  1997-01-01: 0
+  2014-07-01: 0
+1:
+  1997-01-01: 333
+  2014-07-01: 366
+2:
+  1997-01-01: 443
+  2014-07-01: 487
+3:
+  1997-01-01: 543
+  2014-07-01: 597
+4:
+  1997-01-01: 639
+  2014-07-01: 701
+5:
+  1997-01-01: 731
+  2014-07-01: 803
+6:
+  1997-01-01: 827
+  2014-07-01: 908
+7:
+  1997-01-01: 933
+  2014-07-01: 1_026
+8:
+  1997-01-01: 1_031
+  2014-07-01: 1_134
diff --git a/policyengine_us/parameters/gov/states/ct/dss/tfa/payment/regional/region_c/amount.yaml b/policyengine_us/parameters/gov/states/ct/dss/tfa/payment/regional/region_c/amount.yaml
@@ -0,0 +1,46 @@
+description: Connecticut provides this amount as the Region C payment standard under the Temporary Family Assistance program.
+
+metadata:
+  unit: currency-USD
+  period: month
+  breakdown:
+    - range(0, 9)
+  breakdown_labels:
+    - Household size
+  label: Connecticut TFA Region C payment amount
+  reference:
+    - title: State of Connecticut TANF State Plan 2021-2023
+      href: https://portal.ct.gov/dss/-/media/departments-and-agencies/dss/state-plans-and-federal-reports/tanf-state-plan/ct-tanf-plan-2021-2023--draft.pdf#page=57
+    - title: SSA POMS SI BOS00830.403 (Effective July 1, 2014)
+      href: https://secure.ssa.gov/poms.nsf/lnx/0500830403BOS
+    - title: SSA POMS SI BOS00830.403 (Effective July 1, 1995, archived)
+      href: https://web.archive.org/web/20111030193758/https://secure.ssa.gov/poms.nsf/lnx/0500830403BOS
+
+0:
+  # TANF program start; amounts from SSA POMS effective July 1, 1995
+  1997-01-01: 0
+  2014-07-01: 0
+1:
+  1997-01-01: 333
+  2014-07-01: 366
+2:
+  1997-01-01: 443
+  2014-07-01: 487
+3:
+  1997-01-01: 536
+  2014-07-01: 589
+4:
+  1997-01-01: 622
+  2014-07-01: 684
+5:
+  1997-01-01: 708
+  2014-07-01: 779
+6:
+  1997-01-01: 805
+  2014-07-01: 885
+7:
+  1997-01-01: 904
+  2014-07-01: 994
+8:
+  1997-01-01: 1_001
+  2014-07-01: 1_100
diff --git a/policyengine_us/parameters/gov/states/ct/dss/tfa/payment/regional_in_effect.yaml b/policyengine_us/parameters/gov/states/ct/dss/tfa/payment/regional_in_effect.yaml
@@ -0,0 +1,15 @@
+description: Connecticut uses this indicator to determine whether regional payment standards apply under the Temporary Family Assistance program.
+
+values:
+  1997-01-01: true
+  2022-07-01: false
+
+metadata:
+  unit: bool
+  period: month
+  label: Connecticut TFA regional payment standards in effect
+  reference:
+    - title: Connecticut General Statutes § 17b-104(c)
+      href: https://cga.ct.gov/current/pub/chap_319s.htm#sec_17b-104
+    - title: State of Connecticut TANF State Plan 2021-2023, Regional Payment Standards
+      href: https://portal.ct.gov/dss/-/media/departments-and-agencies/dss/state-plans-and-federal-reports/tanf-state-plan/ct-tanf-plan-2021-2023--draft.pdf#page=57
diff --git a/policyengine_us/parameters/gov/states/ct/dss/tfa/resource/limit.yaml b/policyengine_us/parameters/gov/states/ct/dss/tfa/resource/limit.yaml
@@ -1,14 +1,18 @@
 description: Connecticut limits the Temporary Family Assistance program to households with up to this resource amount.
 
 values:
+  2017-10-01: 3_000
+  # PA 22-118 authorized the increase; 2021-2023 State Plan (through 9/30/2023) still shows $3,000, so the $6,000 limit was implemented in the 2024-2026 State Plan effective 10/1/2023
   2023-10-01: 6_000
 
 metadata:
   unit: currency-USD
   period: month
   label: Connecticut TFA resource limit
   reference:
-    - title: State of Connecticut TANF State Plan 2024-2026
+    - title: State of Connecticut TANF State Plan 2024-2026, Resource Limit
       href: https://portal.ct.gov/dss/-/media/departments-and-agencies/dss/state-plans-and-federal-reports/tanf-state-plan/ct-tanf-state-plan-2024---2026---41524-amendment.pdf#page=10
-    - title: Connecticut General Statutes § 17b-112
-      href: https://cga.ct.gov/current/pub/chap_319s.htm#sec_17b-112
+    - title: "OLR Report 2023-R-0100: Benefits Cliffs, Resource Limit (historical $3,000)"
+      href: https://www.cga.ct.gov/2023/rpt/pdf/2023-R-0100.pdf#page=3
+    - title: CT TANF State Plan 2021-2023, Resource Limit
+      href: https://portal.ct.gov/dss/-/media/departments-and-agencies/dss/state-plans-and-federal-reports/tanf-state-plan/ct-tanf-plan-2021-2023--draft.pdf#page=47