MaxGhenis · Oct 5, 2026 · Oct 3, 2026 · Oct 3, 2026 · Oct 4, 2026 · Oct 4, 2026
diff --git a/changelog.d/dead-urls-southeast.fixed.md b/changelog.d/dead-urls-southeast.fixed.md
@@ -0,0 +1 @@
+Replace dead South Carolina, Kentucky, Oklahoma, Florida, Ohio, Missouri, North Carolina and South Dakota reference URLs with live successors or pinned Wayback captures, and guard against their return.
diff --git a/policyengine_us/parameters/gov/contrib/states/ok/dependent_exemption/amount.yaml b/policyengine_us/parameters/gov/contrib/states/ok/dependent_exemption/amount.yaml
@@ -15,6 +15,6 @@ metadata:
     - title: 2023 Form 511 instructions
       href: https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/individuals/past-year/2023/511-Pkt.pdf#page=10
     - title: 2024 Form 511 instructions
-      href: https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/individuals/past-year/2024/511-Pkt.pdf#page=10
+      href: https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/individuals/past-year/2024/511-Pkt-2024.pdf#page=10
     - title: 2025 Form 511 instructions
       href: https://oklahoma.gov/content/dam/ok/en/tax/documents/forms/individuals/current/511-Pkt.pdf#page=10
diff --git a/policyengine_us/parameters/gov/hhs/medicare/savings_programs/eligibility/asset/couple.yaml b/policyengine_us/parameters/gov/hhs/medicare/savings_programs/eligibility/asset/couple.yaml
@@ -29,4 +29,4 @@ metadata:
     - title: "CMS SMDL #10-003: 2010 Medicare Savings Program resource standards"
       href: https://downloads.cms.gov/cmsgov/archived-downloads/smdl/downloads/smd10003.pdf
     - title: Missouri DSS Historical QMB Resource Limits
-      href: https://dss.mo.gov/fsd/iman/medasst/0865-010-15.html
+      href: https://web.archive.org/web/20250311062044/https://dss.mo.gov/fsd/iman/medasst/0865-010-15.html
diff --git a/...yengine_us/parameters/gov/hhs/medicare/savings_programs/eligibility/asset/individual.yaml b/...yengine_us/parameters/gov/hhs/medicare/savings_programs/eligibility/asset/individual.yaml
@@ -29,4 +29,4 @@ metadata:
     - title: "CMS SMDL #10-003: 2010 Medicare Savings Program resource standards"
       href: https://downloads.cms.gov/cmsgov/archived-downloads/smdl/downloads/smd10003.pdf
     - title: Missouri DSS Historical QMB Resource Limits
-      href: https://dss.mo.gov/fsd/iman/medasst/0865-010-15.html
+      href: https://web.archive.org/web/20250311062044/https://dss.mo.gov/fsd/iman/medasst/0865-010-15.html
diff --git a/policyengine_us/parameters/gov/states/fl/dcf/oss/couple_provider_rate_reduction.yaml b/policyengine_us/parameters/gov/states/fl/dcf/oss/couple_provider_rate_reduction.yaml
@@ -14,4 +14,4 @@ metadata:
     - title: FL DCF Appendix A-12, Optional State Supplementation Payment Standards (effective 2024-07-01 — back-calculation 2×$938.40-$1,803.80 = $73 for Jan 2023 Redesign; 2×$1,099-$2,125 = $73 for Jan 2023 Protected)
       href: https://www.myflfamilies.com/sites/default/files/2024-06/Appendix%20A-12.pdf
     - title: FL DCF Appendix A-12, Optional State Supplementation Payment Standards (effective 2025-01-01 — back-calculation 2×$991.40-$1,885.80 = $97 for Jan 2025 Redesign; 2×$1,152-$2,207 = $97 for Jan 2025 Protected)
-      href: https://www.myflfamilies.com/sites/default/files/2025-05/Appendix%20A-12%20-%20State%20Funded%20Programs%20Eligibility%20Standards.pdf
+      href: https://web.archive.org/web/20251030232040/https://www.myflfamilies.com/sites/default/files/2025-05/Appendix%20A-12%20-%20State%20Funded%20Programs%20Eligibility%20Standards.pdf
diff --git a/policyengine_us/parameters/gov/states/fl/dcf/oss/pna.yaml b/policyengine_us/parameters/gov/states/fl/dcf/oss/pna.yaml
@@ -13,6 +13,6 @@ metadata:
     - title: FL DCF Appendix A-12, Optional State Supplementation Payment Standards (effective 2024-07-01 — PNA $54 per person for Jan 2023 and Jan 2024; $160 per person for Jul 2024)
       href: https://www.myflfamilies.com/sites/default/files/2024-06/Appendix%20A-12.pdf
     - title: FL DCF Appendix A-12, Optional State Supplementation Payment Standards (effective 2025-01-01 — PNA $160 per person for Jul 2024 and Jan 2025)
-      href: https://www.myflfamilies.com/sites/default/files/2025-05/Appendix%20A-12%20-%20State%20Funded%20Programs%20Eligibility%20Standards.pdf
+      href: https://web.archive.org/web/20251030232040/https://www.myflfamilies.com/sites/default/files/2025-05/Appendix%20A-12%20-%20State%20Funded%20Programs%20Eligibility%20Standards.pdf
     - title: Florida HB 5001, 2024-25 General Appropriations Act
       href: https://www.flsenate.gov/Session/Bill/2024/5001
diff --git a/policyengine_us/parameters/gov/states/fl/dcf/oss/protected/in_effect.yaml b/policyengine_us/parameters/gov/states/fl/dcf/oss/protected/in_effect.yaml
@@ -11,4 +11,4 @@ metadata:
     - title: FL DCF Appendix A-12, Optional State Supplementation Payment Standards (effective 2024-07-01, shows Protected columns for Jan 2023, Jan 2024, Jul 2024)
       href: https://www.myflfamilies.com/sites/default/files/2024-06/Appendix%20A-12.pdf
     - title: FL DCF Appendix A-12, Optional State Supplementation Payment Standards (effective 2025-01-01)
-      href: https://www.myflfamilies.com/sites/default/files/2025-05/Appendix%20A-12%20-%20State%20Funded%20Programs%20Eligibility%20Standards.pdf
+      href: https://web.archive.org/web/20251030232040/https://www.myflfamilies.com/sites/default/files/2025-05/Appendix%20A-12%20-%20State%20Funded%20Programs%20Eligibility%20Standards.pdf
diff --git a/policyengine_us/parameters/gov/states/fl/dcf/oss/protected/max_oss/couple.yaml b/policyengine_us/parameters/gov/states/fl/dcf/oss/protected/max_oss/couple.yaml
@@ -11,4 +11,4 @@ metadata:
     - title: FL DCF Appendix A-12, Optional State Supplementation Payment Standards (effective 2024-07-01 — Protected Max OSS $478(C) for Jan 2023 and Jan 2024; $690(C) for Jul 2024)
       href: https://www.myflfamilies.com/sites/default/files/2024-06/Appendix%20A-12.pdf
     - title: FL DCF Appendix A-12, Optional State Supplementation Payment Standards (effective 2025-01-01 — Protected Max OSS $690(C) for Jul 2024 and Jan 2025)
-      href: https://www.myflfamilies.com/sites/default/files/2025-05/Appendix%20A-12%20-%20State%20Funded%20Programs%20Eligibility%20Standards.pdf
+      href: https://web.archive.org/web/20251030232040/https://www.myflfamilies.com/sites/default/files/2025-05/Appendix%20A-12%20-%20State%20Funded%20Programs%20Eligibility%20Standards.pdf
diff --git a/policyengine_us/parameters/gov/states/fl/dcf/oss/protected/max_oss/individual.yaml b/policyengine_us/parameters/gov/states/fl/dcf/oss/protected/max_oss/individual.yaml
@@ -11,4 +11,4 @@ metadata:
     - title: FL DCF Appendix A-12, Optional State Supplementation Payment Standards (effective 2024-07-01 — Protected Max OSS $239(I) for Jan 2023 and Jan 2024; $345(I) for Jul 2024)
       href: https://www.myflfamilies.com/sites/default/files/2024-06/Appendix%20A-12.pdf
     - title: FL DCF Appendix A-12, Optional State Supplementation Payment Standards (effective 2025-01-01 — Protected Max OSS $345(I) for Jul 2024 and Jan 2025)
-      href: https://www.myflfamilies.com/sites/default/files/2025-05/Appendix%20A-12%20-%20State%20Funded%20Programs%20Eligibility%20Standards.pdf
+      href: https://web.archive.org/web/20251030232040/https://www.myflfamilies.com/sites/default/files/2025-05/Appendix%20A-12%20-%20State%20Funded%20Programs%20Eligibility%20Standards.pdf
diff --git a/policyengine_us/parameters/gov/states/fl/dcf/oss/protected/provider_rate_offset.yaml b/policyengine_us/parameters/gov/states/fl/dcf/oss/protected/provider_rate_offset.yaml
@@ -10,4 +10,4 @@ metadata:
     - title: FL DCF Appendix A-12, Optional State Supplementation Payment Standards (effective 2024-07-01 — Protected provider rate $1,099 at Jan 2023, $1,128 at Jan 2024 / Jul 2024; SSI FBR $914 at Jan 2023, $943 at Jan 2024)
       href: https://www.myflfamilies.com/sites/default/files/2024-06/Appendix%20A-12.pdf
     - title: FL DCF Appendix A-12, Optional State Supplementation Payment Standards (effective 2025-01-01 — Protected provider rate $1,152 at Jan 2025; SSI FBR $967)
-      href: https://www.myflfamilies.com/sites/default/files/2025-05/Appendix%20A-12%20-%20State%20Funded%20Programs%20Eligibility%20Standards.pdf
+      href: https://web.archive.org/web/20251030232040/https://www.myflfamilies.com/sites/default/files/2025-05/Appendix%20A-12%20-%20State%20Funded%20Programs%20Eligibility%20Standards.pdf
diff --git a/policyengine_us/parameters/gov/states/fl/dcf/oss/redesign/income_standard_pna_offset.yaml b/policyengine_us/parameters/gov/states/fl/dcf/oss/redesign/income_standard_pna_offset.yaml
@@ -12,4 +12,4 @@ metadata:
     - title: FL DCF Appendix A-12, Optional State Supplementation Payment Standards (effective 2024-07-01 — Redesign income standard $992.40(I) - provider rate $938.40 = $54 offset at Jan 2023; $1,021.40 - $967.40 = $54 at Jan 2024 / Jul 2024)
       href: https://www.myflfamilies.com/sites/default/files/2024-06/Appendix%20A-12.pdf
     - title: FL DCF Appendix A-12, Optional State Supplementation Payment Standards (effective 2025-01-01 — Redesign income standard $1,045.40(I) - provider rate $991.40 = $54 offset at Jan 2025)
-      href: https://www.myflfamilies.com/sites/default/files/2025-05/Appendix%20A-12%20-%20State%20Funded%20Programs%20Eligibility%20Standards.pdf
+      href: https://web.archive.org/web/20251030232040/https://www.myflfamilies.com/sites/default/files/2025-05/Appendix%20A-12%20-%20State%20Funded%20Programs%20Eligibility%20Standards.pdf
diff --git a/policyengine_us/parameters/gov/states/fl/dcf/oss/redesign/max_oss/individual.yaml b/policyengine_us/parameters/gov/states/fl/dcf/oss/redesign/max_oss/individual.yaml
@@ -13,4 +13,4 @@ metadata:
     - title: FL DCF Appendix A-12, Optional State Supplementation Payment Standards (effective 2024-07-01 — Redesign Max OSS $78.40(I) at Jan 2023 / Jan 2024; $184.40(I) at Jul 2024)
       href: https://www.myflfamilies.com/sites/default/files/2024-06/Appendix%20A-12.pdf
     - title: FL DCF Appendix A-12, Optional State Supplementation Payment Standards (effective 2025-01-01 — Redesign Max OSS $184.40(I) at Jul 2024 / Jan 2025)
-      href: https://www.myflfamilies.com/sites/default/files/2025-05/Appendix%20A-12%20-%20State%20Funded%20Programs%20Eligibility%20Standards.pdf
+      href: https://web.archive.org/web/20251030232040/https://www.myflfamilies.com/sites/default/files/2025-05/Appendix%20A-12%20-%20State%20Funded%20Programs%20Eligibility%20Standards.pdf
diff --git a/policyengine_us/parameters/gov/states/fl/dcf/oss/redesign/provider_rate_offset.yaml b/policyengine_us/parameters/gov/states/fl/dcf/oss/redesign/provider_rate_offset.yaml
@@ -12,4 +12,4 @@ metadata:
     - title: FL DCF Appendix A-12, Optional State Supplementation Payment Standards (effective 2024-07-01 — Redesign provider rate $938.40(I) at Jan 2023 / FBR $914 = $24.40 offset; $967.40 at Jan 2024 / Jul 2024 / FBR $943 = $24.40 offset)
       href: https://www.myflfamilies.com/sites/default/files/2024-06/Appendix%20A-12.pdf
     - title: FL DCF Appendix A-12, Optional State Supplementation Payment Standards (effective 2025-01-01 — Redesign provider rate $991.40(I) at Jan 2025 / FBR $967 = $24.40 offset)
-      href: https://www.myflfamilies.com/sites/default/files/2025-05/Appendix%20A-12%20-%20State%20Funded%20Programs%20Eligibility%20Standards.pdf
+      href: https://web.archive.org/web/20251030232040/https://www.myflfamilies.com/sites/default/files/2025-05/Appendix%20A-12%20-%20State%20Funded%20Programs%20Eligibility%20Standards.pdf
diff --git a/policyengine_us/parameters/gov/states/fl/dcf/tanf/income/disregard/standard_disregard.yaml b/policyengine_us/parameters/gov/states/fl/dcf/tanf/income/disregard/standard_disregard.yaml
@@ -9,4 +9,4 @@ metadata:
   label: Florida TCA standard earned income disregard
   reference:
     - title: Florida DCF Policy Manual 2620.0111.01 - Income Test and Benefit Determination
-      href: https://www.myflfamilies.com/sites/default/files/2023-02/2600.pdf#page=21
+      href: https://ffic.myflfamilies.com/manual/2600.pdf#page=21
diff --git a/...cyengine_us/parameters/gov/states/ky/tax/income/credits/dependent_care_service/match.yaml b/...cyengine_us/parameters/gov/states/ky/tax/income/credits/dependent_care_service/match.yaml
@@ -13,6 +13,6 @@ metadata:
     - title: 2023 Kentucky Individual Income Tax Forms
       href: https://revenue.ky.gov/Forms/740%20Packet%20Instructions%202023.pdf#page=9
     - title: 2024 Kentucky Individual Income Tax Forms
-      href: https://revenue.ky.gov/Forms/740%20instructions%20packet%20(2025).pdf#page=9
+      href: https://revenue.ky.gov/Forms/740%20instructions%20packet%20(2024).pdf#page=9
     - title: 2025 Kentucky Form 740 Instructions
-      href: https://revenue.ky.gov/Forms/740%20Packet%20Instructions%20(2025).pdf#page=9
+      href: https://revenue.ky.gov/Forms/740%20Packet%20Instructions.pdf#page=9
diff --git a/policyengine_us/parameters/gov/states/ky/tax/income/credits/family_size/family_size_cap.yaml b/policyengine_us/parameters/gov/states/ky/tax/income/credits/family_size/family_size_cap.yaml
@@ -13,6 +13,6 @@ metadata:
     - title: 2023 Kentucky individual tax credit schedule, ITC
       href: https://revenue.ky.gov/Forms/Schedule%20ITC%202023.pdf#page=2
     - title: 2024 Kentucky Individual Income Tax Forms
-      href: https://revenue.ky.gov/Forms/740%20instructions%20packet%20(2025).pdf#page=11
+      href: https://revenue.ky.gov/Forms/740%20instructions%20packet%20(2024).pdf#page=11
     - title: 2025 Kentucky Schedule ITC
       href: https://revenue.ky.gov/Forms/Schedule%20ITC%20(2025).pdf#page=2
diff --git a/policyengine_us/parameters/gov/states/ky/tax/income/credits/tuition_tax/rate.yaml b/policyengine_us/parameters/gov/states/ky/tax/income/credits/tuition_tax/rate.yaml
@@ -12,6 +12,6 @@ metadata:
     - title: 2023 KENTUCKY Form 8863-K
       href: https://revenue.ky.gov/Forms/Form%208863-K%202023.pdf#page=2
     - title: 2024 Kentucky Individual Income Tax Forms
-      href: https://revenue.ky.gov/Forms/740%20instructions%20packet%20(2025).pdf#page=36
+      href: https://revenue.ky.gov/Forms/740%20instructions%20packet%20(2024).pdf#page=36
     - title: 2025 Kentucky Form 8863-K
       href: https://revenue.ky.gov/Forms/8863-K%20(2025).pdf#page=1
diff --git a/policyengine_us/parameters/gov/states/ky/tax/income/exclusions/pension_income/threshold.yaml b/policyengine_us/parameters/gov/states/ky/tax/income/exclusions/pension_income/threshold.yaml
@@ -13,9 +13,9 @@ metadata:
   label: Kentucky pension income exclusion threshold
   reference:
     - title: Kentucky Pension Income Schedule P (1999)
-      href: https://revenue.ky.gov/Forms/1999_42a740p.pdf
+      href: https://web.archive.org/web/20161221194043/https://revenue.ky.gov/Forms/1999_42a740p.pdf
     - title: Kentucky Pension Income Schedule P (2000)
-      href: https://revenue.ky.gov/Forms/2000_42a740p.pdf
+      href: https://web.archive.org/web/20161221171528/https://revenue.ky.gov/Forms/2000_42a740p.pdf
     - title: Kentucky Pension Income Schedule P (2001)
       href: https://revenue.ky.gov/Forms/2001_42A740P.pdf
     - title: Kentucky Pension Income Schedule P (2002)

diff --git a/policyengine_us/parameters/gov/states/ky/tax/income/subtractions.yaml b/policyengine_us/parameters/gov/states/ky/tax/income/subtractions.yaml
@@ -20,7 +20,7 @@ metadata:
     - title: 2021 KENTUCKY FEDERAL ADJUSTED GROSS INCOME MODIFICATIONS PART 2
       href: https://revenue.ky.gov/Forms/Schedule%20M-2021.pdf#page=1
     - title: 2024 Kentucky Individual Income Tax Forms
-      href: https://revenue.ky.gov/Forms/740%20instructions%20packet%20(2025).pdf#page=27
+      href: https://revenue.ky.gov/Forms/740%20instructions%20packet%20(2024).pdf#page=27
     - title: 2023 Kentucky Individual Income Tax Forms
       href: https://revenue.ky.gov/Forms/740%20Packet%20Instructions%202023.pdf#page=27
     - title: 2022 Kentucky Individual Income Tax Forms

diff --git a/...parameters/gov/states/mi/tax/income/credits/home_heating/additional_exemption/amount.yaml b/...parameters/gov/states/mi/tax/income/credits/home_heating/additional_exemption/amount.yaml
@@ -16,7 +16,7 @@ metadata:
     - title: Michigan 2021 Book MI-1040CR7 Home Heating Instructions, Table A
       href: https://www.michigan.gov/-/media/Project/Websites/taxes/2022RM/IIT/BOOK_MI-1040CR-7.pdf#page=11
     - title: Michigan 2022 MI-1040CR7 Home Heating Credit Claim Instructions, Table A
-      href: https://www.efile.com/pdf/5988.pdf#page=13
+      href: https://web.archive.org/web/20230220132302/https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/2022/2022-IIT-Forms/BOOK_MI-1040CR-7.pdf?rev=d765b421bc7343c0a54793499dc550db&hash=0B10BE7DD0B91D7F609230E8F636EBC8#page=11
     - title: Michigan 2023 Book MI-1040CR7 Home Heating Instructions, Table A
       href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/2023/2023-IIT-Forms/BOOK_MI-1040CR-7.pdf#page=11
     - title: Michigan 2024 Book MI-1040CR7 Home Heating Instructions, Table A

diff --git a/.../parameters/gov/states/mi/tax/income/credits/home_heating/additional_exemption/limit.yaml b/.../parameters/gov/states/mi/tax/income/credits/home_heating/additional_exemption/limit.yaml
@@ -11,7 +11,7 @@ metadata:
     - title: Michigan 2021 Book MI-1040CR7 Home Heating Instructions, Table A
       href: https://www.michigan.gov/-/media/Project/Websites/taxes/2022RM/IIT/BOOK_MI-1040CR-7.pdf#page=11
     - title: Michigan 2022 MI-1040CR7 Home Heating Credit Claim Instructions, Table A
-      href: https://www.efile.com/pdf/5988.pdf#page=13
+      href: https://web.archive.org/web/20230220132302/https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/2022/2022-IIT-Forms/BOOK_MI-1040CR-7.pdf?rev=d765b421bc7343c0a54793499dc550db&hash=0B10BE7DD0B91D7F609230E8F636EBC8#page=11
     - title: Michigan 2023 Book MI-1040CR7 Home Heating Instructions, Table A
       href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/2023/2023-IIT-Forms/BOOK_MI-1040CR-7.pdf#page=11
     - title: Michigan 2024 Book MI-1040CR7 Home Heating Instructions, Table A

diff --git a/...ters/gov/states/mi/tax/income/credits/home_heating/alternate/household_resources/cap.yaml b/...ters/gov/states/mi/tax/income/credits/home_heating/alternate/household_resources/cap.yaml
@@ -11,7 +11,7 @@ metadata:
     - title: Michigan 2021 Book MI-1040CR7 Home Heating Instructions, Table B
       href: https://www.michigan.gov/-/media/Project/Websites/taxes/2022RM/IIT/BOOK_MI-1040CR-7.pdf#page=11
     - title: Michigan 2022 MI-1040CR7 Home Heating Credit Claim Instructions, Table B
-      href: https://www.efile.com/pdf/5988.pdf#page=13
+      href: https://web.archive.org/web/20230220132302/https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/2022/2022-IIT-Forms/BOOK_MI-1040CR-7.pdf?rev=d765b421bc7343c0a54793499dc550db&hash=0B10BE7DD0B91D7F609230E8F636EBC8#page=11
     - title: Michigan 2023 Book MI-1040CR7 Home Heating Instructions, Table B
       href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/2023/2023-IIT-Forms/BOOK_MI-1040CR-7.pdf#page=11
     - title: Michigan 2024 Book MI-1040CR7 Home Heating Instructions, Table B

diff --git a/...engine_us/parameters/gov/states/mi/tax/income/credits/home_heating/credit_percentage.yaml b/...engine_us/parameters/gov/states/mi/tax/income/credits/home_heating/credit_percentage.yaml
@@ -22,7 +22,7 @@ metadata:
     - title: Michigan 2021 Book MI-1040CR7 Home Heating Instructions Line 47
       href: https://www.michigan.gov/-/media/Project/Websites/taxes/2022RM/IIT/BOOK_MI-1040CR-7.pdf#page=9
     - title: Michigan 2022 MI-1040CR7 Home Heating Credit Claim Instructions, Line 47
-      href: https://www.efile.com/pdf/5988.pdf#page=11
+      href: https://web.archive.org/web/20230220132302/https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/2022/2022-IIT-Forms/BOOK_MI-1040CR-7.pdf?rev=d765b421bc7343c0a54793499dc550db&hash=0B10BE7DD0B91D7F609230E8F636EBC8#page=9
     - title: Michigan 2023 Book MI-1040CR7 Home Heating Instructions Line 47
       href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/2023/2023-IIT-Forms/BOOK_MI-1040CR-7.pdf#page=9
     - title: 2024 Michigan Home Heating Credit Claim MI-1040CR-7 Line 47

diff --git a/policyengine_us/parameters/gov/states/mi/tax/income/credits/home_heating/standard/base.yaml b/policyengine_us/parameters/gov/states/mi/tax/income/credits/home_heating/standard/base.yaml
@@ -11,7 +11,7 @@ metadata:
     - title: Michigan 2021 Book MI-1040CR7 Home Heating Instructions, Table A
       href: https://www.michigan.gov/-/media/Project/Websites/taxes/2022RM/IIT/BOOK_MI-1040CR-7.pdf#page=11
     - title: Michigan 2022 MI-1040CR7 Home Heating Credit Claim Instructions, Table A
-      href: https://www.efile.com/pdf/5988.pdf#page=13
+      href: https://web.archive.org/web/20230220132302/https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/2022/2022-IIT-Forms/BOOK_MI-1040CR-7.pdf?rev=d765b421bc7343c0a54793499dc550db&hash=0B10BE7DD0B91D7F609230E8F636EBC8#page=11
     - title: Michigan 2023 Book MI-1040CR7 Home Heating Instructions, Table A
       href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/2023/2023-IIT-Forms/BOOK_MI-1040CR-7.pdf#page=11
     - title: Michigan 2024 Book MI-1040CR7 Home Heating Instructions, Table A

diff --git a/...rs/gov/states/mi/tax/income/credits/home_heating/standard/included_heating_cost_rate.yaml b/...rs/gov/states/mi/tax/income/credits/home_heating/standard/included_heating_cost_rate.yaml
@@ -17,7 +17,7 @@ metadata:
     - title: Michigan 2021 Book MI-1040CR7 Home Heating Instructions, Line 41
       href: https://www.michigan.gov/-/media/Project/Websites/taxes/2022RM/IIT/BOOK_MI-1040CR-7.pdf#page=9
     - title: Michigan 2022 MI-1040CR7 Home Heating Credit Claim Instructions, Line 41
-      href: https://www.efile.com/pdf/5988.pdf#page=11
+      href: https://web.archive.org/web/20230220132302/https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/2022/2022-IIT-Forms/BOOK_MI-1040CR-7.pdf?rev=d765b421bc7343c0a54793499dc550db&hash=0B10BE7DD0B91D7F609230E8F636EBC8#page=9
     - title: Michigan 2023 Book MI-1040CR7 Home Heating Instructions, Line 41
       href: https://www.michigan.gov/taxes/-/media/Project/Websites/taxes/Forms/2023/2023-IIT-Forms/BOOK_MI-1040CR-7.pdf#page=9
     - title: Michigan 2024 Book MI-1040CR7 Home Heating Instructions, Line 41

diff --git a/policyengine_us/parameters/gov/states/mo/dese/ccs/age_group/age.yaml b/policyengine_us/parameters/gov/states/mo/dese/ccs/age_group/age.yaml
@@ -12,7 +12,7 @@ metadata:
   # School-Age = five years or older (5+).
   reference:
     - title: FFY 2025-2027 CCDF State Plan, Amendment 2, Section 5.2.2 Age classifications
-      href: https://dese.mo.gov/sites/dese/files/media/pdf/2026/04/ACF-118%20CCDF%20FFY%202025-2027%20For%20Missouri%20-%20Approved%203.26.2026.pdf#page=65
+      href: https://dese.mo.gov/sites/g/files/zuston521/files/media/pdf/2026/04/ACF-118%20CCDF%20FFY%202025-2027%20For%20Missouri%20-%20Approved%203.26.2026.pdf#page=66
 
 brackets:
   - threshold:

diff --git a/policyengine_us/parameters/gov/states/mo/dese/ccs/copay/daily_fee/full_unit.yaml b/policyengine_us/parameters/gov/states/mo/dese/ccs/copay/daily_fee/full_unit.yaml
@@ -10,7 +10,7 @@ metadata:
   label: Missouri Child Care Subsidy full unit daily sliding fee
   reference:
     - title: November 2025 Child Care Eligibility Income Guidelines and Sliding Fee Chart
-      href: https://dese.mo.gov/sites/dese/files/media/pdf/2025/10/10.2025%20Income%20Eligibility%20Table%20%282%29.pdf#page=1
+      href: https://dese.mo.gov/sites/g/files/zuston521/files/media/pdf/2025/10/10.2025%20Income%20Eligibility%20Table%20%282%29.pdf#page=1
 
 brackets:
   - threshold:

diff --git a/policyengine_us/parameters/gov/states/mo/dese/ccs/copay/daily_fee/half_unit.yaml b/policyengine_us/parameters/gov/states/mo/dese/ccs/copay/daily_fee/half_unit.yaml
@@ -10,7 +10,7 @@ metadata:
   label: Missouri Child Care Subsidy half unit daily sliding fee
   reference:
     - title: November 2025 Child Care Eligibility Income Guidelines and Sliding Fee Chart
-      href: https://dese.mo.gov/sites/dese/files/media/pdf/2025/10/10.2025%20Income%20Eligibility%20Table%20%282%29.pdf#page=1
+      href: https://dese.mo.gov/sites/g/files/zuston521/files/media/pdf/2025/10/10.2025%20Income%20Eligibility%20Table%20%282%29.pdf#page=1
 
 brackets:
   - threshold:

diff --git a/policyengine_us/parameters/gov/states/mo/dese/ccs/copay/daily_fee/part_unit.yaml b/policyengine_us/parameters/gov/states/mo/dese/ccs/copay/daily_fee/part_unit.yaml
@@ -10,7 +10,7 @@ metadata:
   label: Missouri Child Care Subsidy part unit daily sliding fee
   reference:
     - title: November 2025 Child Care Eligibility Income Guidelines and Sliding Fee Chart
-      href: https://dese.mo.gov/sites/dese/files/media/pdf/2025/10/10.2025%20Income%20Eligibility%20Table%20%282%29.pdf#page=1
+      href: https://dese.mo.gov/sites/g/files/zuston521/files/media/pdf/2025/10/10.2025%20Income%20Eligibility%20Table%20%282%29.pdf#page=1
 
 brackets:
   - threshold:
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1 @@
		Replace dead South Carolina, Kentucky, Oklahoma, Florida, Ohio, Missouri, North Carolina and South Dakota reference URLs with live successors or pinned Wayback captures, and guard against their return.