MaxGhenis · Oct 4, 2026 · Oct 3, 2026 · Oct 3, 2026 · Oct 4, 2026
diff --git a/changelog.d/dead-urls-midatlantic.fixed.md b/changelog.d/dead-urls-midatlantic.fixed.md
@@ -0,0 +1 @@
+Replace dead Maryland, DC, Delaware, Pennsylvania, Virginia, West Virginia and New Jersey reference URLs with live successors or pinned Wayback captures, and guard against their return.
diff --git a/...cyengine_us/parameters/gov/local/md/anne_arundel_county/tax/income/head_of_household.yaml b/...cyengine_us/parameters/gov/local/md/anne_arundel_county/tax/income/head_of_household.yaml
@@ -11,11 +11,11 @@ metadata:
     - title: Maryland Local Income Tax Rates
       href: https://services.marylandcomptroller.gov/taxes/en/maryland-income-tax-rates-and-brackets
     - title: 2022 Maryland Income Tax Instructions - Local Tax Rate Chart
-      href: https://www.marylandcomptroller.gov/content/dam/mdcomp/tax/instructions/2022/Resident_Booklet.pdf#page=22
+      href: https://interactive.marylandtaxes.gov/Individuals/iFile_ChooseForm/PriorYearForms/Resident_Booklet_2022.pdf#page=22
     - title: 2023 Maryland Income Tax Instructions - Local Tax Rate Chart
-      href: https://www.marylandcomptroller.gov/content/dam/mdcomp/tax/instructions/2023/Resident_Booklet.pdf#page=23
+      href: https://www.marylandcomptroller.gov/content/dam/mdcomp/tax/instructions/2023/Resident-Booklet.pdf#page=23
     - title: 2024 Maryland Income Tax Instructions - Local Tax Rate Chart
-      href: https://www.marylandcomptroller.gov/content/dam/mdcomp/tax/instructions/2024/Resident_Booklet.pdf#page=25
+      href: https://www.marylandcomptroller.gov/content/dam/mdcomp/tax/instructions/2024/Resident-Booklet.pdf#page=25
 brackets:
   - threshold:
       2021-01-01: 0

diff --git a/policyengine_us/parameters/gov/local/md/anne_arundel_county/tax/income/joint.yaml b/policyengine_us/parameters/gov/local/md/anne_arundel_county/tax/income/joint.yaml
@@ -11,11 +11,11 @@ metadata:
     - title: Maryland Local Income Tax Rates
       href: https://services.marylandcomptroller.gov/taxes/en/maryland-income-tax-rates-and-brackets
     - title: 2022 Maryland Income Tax Instructions - Local Tax Rate Chart
-      href: https://www.marylandcomptroller.gov/content/dam/mdcomp/tax/instructions/2022/Resident_Booklet.pdf#page=22
+      href: https://interactive.marylandtaxes.gov/Individuals/iFile_ChooseForm/PriorYearForms/Resident_Booklet_2022.pdf#page=22
     - title: 2023 Maryland Income Tax Instructions - Local Tax Rate Chart
-      href: https://www.marylandcomptroller.gov/content/dam/mdcomp/tax/instructions/2023/Resident_Booklet.pdf#page=23
+      href: https://www.marylandcomptroller.gov/content/dam/mdcomp/tax/instructions/2023/Resident-Booklet.pdf#page=23
     - title: 2024 Maryland Income Tax Instructions - Local Tax Rate Chart
-      href: https://www.marylandcomptroller.gov/content/dam/mdcomp/tax/instructions/2024/Resident_Booklet.pdf#page=25
+      href: https://www.marylandcomptroller.gov/content/dam/mdcomp/tax/instructions/2024/Resident-Booklet.pdf#page=25
 brackets:
   - threshold:
       2021-01-01: 0

diff --git a/policyengine_us/parameters/gov/local/md/anne_arundel_county/tax/income/separate.yaml b/policyengine_us/parameters/gov/local/md/anne_arundel_county/tax/income/separate.yaml
@@ -11,11 +11,11 @@ metadata:
     - title: Maryland Local Income Tax Rates
       href: https://services.marylandcomptroller.gov/taxes/en/maryland-income-tax-rates-and-brackets
     - title: 2022 Maryland Income Tax Instructions - Local Tax Rate Chart
-      href: https://www.marylandcomptroller.gov/content/dam/mdcomp/tax/instructions/2022/Resident_Booklet.pdf#page=22
+      href: https://interactive.marylandtaxes.gov/Individuals/iFile_ChooseForm/PriorYearForms/Resident_Booklet_2022.pdf#page=22
     - title: 2023 Maryland Income Tax Instructions - Local Tax Rate Chart
-      href: https://www.marylandcomptroller.gov/content/dam/mdcomp/tax/instructions/2023/Resident_Booklet.pdf#page=23
+      href: https://www.marylandcomptroller.gov/content/dam/mdcomp/tax/instructions/2023/Resident-Booklet.pdf#page=23
     - title: 2024 Maryland Income Tax Instructions - Local Tax Rate Chart
-      href: https://www.marylandcomptroller.gov/content/dam/mdcomp/tax/instructions/2024/Resident_Booklet.pdf#page=25
+      href: https://www.marylandcomptroller.gov/content/dam/mdcomp/tax/instructions/2024/Resident-Booklet.pdf#page=25
 brackets:
   - threshold:
       2021-01-01: 0

diff --git a/policyengine_us/parameters/gov/local/md/anne_arundel_county/tax/income/single.yaml b/policyengine_us/parameters/gov/local/md/anne_arundel_county/tax/income/single.yaml
@@ -11,11 +11,11 @@ metadata:
     - title: Maryland Local Income Tax Rates
       href: https://services.marylandcomptroller.gov/taxes/en/maryland-income-tax-rates-and-brackets
     - title: 2022 Maryland Income Tax Instructions - Local Tax Rate Chart
-      href: https://www.marylandcomptroller.gov/content/dam/mdcomp/tax/instructions/2022/Resident_Booklet.pdf#page=22
+      href: https://interactive.marylandtaxes.gov/Individuals/iFile_ChooseForm/PriorYearForms/Resident_Booklet_2022.pdf#page=22
     - title: 2023 Maryland Income Tax Instructions - Local Tax Rate Chart
-      href: https://www.marylandcomptroller.gov/content/dam/mdcomp/tax/instructions/2023/Resident_Booklet.pdf#page=23
+      href: https://www.marylandcomptroller.gov/content/dam/mdcomp/tax/instructions/2023/Resident-Booklet.pdf#page=23
     - title: 2024 Maryland Income Tax Instructions - Local Tax Rate Chart
-      href: https://www.marylandcomptroller.gov/content/dam/mdcomp/tax/instructions/2024/Resident_Booklet.pdf#page=25
+      href: https://www.marylandcomptroller.gov/content/dam/mdcomp/tax/instructions/2024/Resident-Booklet.pdf#page=25
 brackets:
   - threshold:
       2021-01-01: 0

diff --git a/policyengine_us/parameters/gov/local/md/anne_arundel_county/tax/income/surviving_spouse.yaml b/policyengine_us/parameters/gov/local/md/anne_arundel_county/tax/income/surviving_spouse.yaml
@@ -11,11 +11,11 @@ metadata:
     - title: Maryland Local Income Tax Rates
       href: https://services.marylandcomptroller.gov/taxes/en/maryland-income-tax-rates-and-brackets
     - title: 2022 Maryland Income Tax Instructions - Local Tax Rate Chart
-      href: https://www.marylandcomptroller.gov/content/dam/mdcomp/tax/instructions/2022/Resident_Booklet.pdf#page=22
+      href: https://interactive.marylandtaxes.gov/Individuals/iFile_ChooseForm/PriorYearForms/Resident_Booklet_2022.pdf#page=22
     - title: 2023 Maryland Income Tax Instructions - Local Tax Rate Chart
-      href: https://www.marylandcomptroller.gov/content/dam/mdcomp/tax/instructions/2023/Resident_Booklet.pdf#page=23
+      href: https://www.marylandcomptroller.gov/content/dam/mdcomp/tax/instructions/2023/Resident-Booklet.pdf#page=23
     - title: 2024 Maryland Income Tax Instructions - Local Tax Rate Chart
-      href: https://www.marylandcomptroller.gov/content/dam/mdcomp/tax/instructions/2024/Resident_Booklet.pdf#page=25
+      href: https://www.marylandcomptroller.gov/content/dam/mdcomp/tax/instructions/2024/Resident-Booklet.pdf#page=25
 brackets:
   - threshold:
       2021-01-01: 0

diff --git a/policyengine_us/parameters/gov/local/md/flat_rate.yaml b/policyengine_us/parameters/gov/local/md/flat_rate.yaml
@@ -9,11 +9,11 @@ metadata:
     - title: Maryland Local Income Tax Rates
       href: https://services.marylandcomptroller.gov/taxes/en/maryland-income-tax-rates-and-brackets
     - title: 2022 Maryland Income Tax Instructions - Local Tax Rate Chart
-      href: https://www.marylandcomptroller.gov/content/dam/mdcomp/tax/instructions/2022/Resident_Booklet.pdf#page=22
+      href: https://interactive.marylandtaxes.gov/Individuals/iFile_ChooseForm/PriorYearForms/Resident_Booklet_2022.pdf#page=22
     - title: 2023 Maryland Income Tax Instructions - Local Tax Rate Chart
-      href: https://www.marylandcomptroller.gov/content/dam/mdcomp/tax/instructions/2023/Resident_Booklet.pdf#page=23
+      href: https://www.marylandcomptroller.gov/content/dam/mdcomp/tax/instructions/2023/Resident-Booklet.pdf#page=23
     - title: 2024 Maryland Income Tax Instructions - Local Tax Rate Chart
-      href: https://www.marylandcomptroller.gov/content/dam/mdcomp/tax/instructions/2024/Resident_Booklet.pdf#page=25
+      href: https://www.marylandcomptroller.gov/content/dam/mdcomp/tax/instructions/2024/Resident-Booklet.pdf#page=25
 # Progressive counties have 0 rate here; their tax is calculated separately
 ANNE_ARUNDEL_COUNTY_MD:
   2021-01-01: 0

diff --git a/policyengine_us/parameters/gov/local/md/frederick_county/tax/income/head_of_household.yaml b/policyengine_us/parameters/gov/local/md/frederick_county/tax/income/head_of_household.yaml
@@ -11,11 +11,11 @@ metadata:
     - title: Maryland Local Income Tax Rates
       href: https://services.marylandcomptroller.gov/taxes/en/maryland-income-tax-rates-and-brackets
     - title: 2022 Maryland Income Tax Instructions - Local Tax Rate Chart
-      href: https://www.marylandcomptroller.gov/content/dam/mdcomp/tax/instructions/2022/Resident_Booklet.pdf#page=22
+      href: https://interactive.marylandtaxes.gov/Individuals/iFile_ChooseForm/PriorYearForms/Resident_Booklet_2022.pdf#page=22
     - title: 2023 Maryland Income Tax Instructions - Local Tax Rate Chart
-      href: https://www.marylandcomptroller.gov/content/dam/mdcomp/tax/instructions/2023/Resident_Booklet.pdf#page=23
+      href: https://www.marylandcomptroller.gov/content/dam/mdcomp/tax/instructions/2023/Resident-Booklet.pdf#page=23
     - title: 2024 Maryland Income Tax Instructions - Local Tax Rate Chart
-      href: https://www.marylandcomptroller.gov/content/dam/mdcomp/tax/instructions/2024/Resident_Booklet.pdf#page=25
+      href: https://www.marylandcomptroller.gov/content/dam/mdcomp/tax/instructions/2024/Resident-Booklet.pdf#page=25
 brackets:
   - threshold:
       2021-01-01: 0

diff --git a/policyengine_us/parameters/gov/local/md/frederick_county/tax/income/joint.yaml b/policyengine_us/parameters/gov/local/md/frederick_county/tax/income/joint.yaml
@@ -11,11 +11,11 @@ metadata:
     - title: Maryland Local Income Tax Rates
       href: https://services.marylandcomptroller.gov/taxes/en/maryland-income-tax-rates-and-brackets
     - title: 2022 Maryland Income Tax Instructions - Local Tax Rate Chart
-      href: https://www.marylandcomptroller.gov/content/dam/mdcomp/tax/instructions/2022/Resident_Booklet.pdf#page=22
+      href: https://interactive.marylandtaxes.gov/Individuals/iFile_ChooseForm/PriorYearForms/Resident_Booklet_2022.pdf#page=22
     - title: 2023 Maryland Income Tax Instructions - Local Tax Rate Chart
-      href: https://www.marylandcomptroller.gov/content/dam/mdcomp/tax/instructions/2023/Resident_Booklet.pdf#page=23
+      href: https://www.marylandcomptroller.gov/content/dam/mdcomp/tax/instructions/2023/Resident-Booklet.pdf#page=23
     - title: 2024 Maryland Income Tax Instructions - Local Tax Rate Chart
-      href: https://www.marylandcomptroller.gov/content/dam/mdcomp/tax/instructions/2024/Resident_Booklet.pdf#page=25
+      href: https://www.marylandcomptroller.gov/content/dam/mdcomp/tax/instructions/2024/Resident-Booklet.pdf#page=25
 brackets:
   - threshold:
       2021-01-01: 0

diff --git a/policyengine_us/parameters/gov/local/md/frederick_county/tax/income/separate.yaml b/policyengine_us/parameters/gov/local/md/frederick_county/tax/income/separate.yaml
@@ -11,11 +11,11 @@ metadata:
     - title: Maryland Local Income Tax Rates
       href: https://services.marylandcomptroller.gov/taxes/en/maryland-income-tax-rates-and-brackets
     - title: 2022 Maryland Income Tax Instructions - Local Tax Rate Chart
-      href: https://www.marylandcomptroller.gov/content/dam/mdcomp/tax/instructions/2022/Resident_Booklet.pdf#page=22
+      href: https://interactive.marylandtaxes.gov/Individuals/iFile_ChooseForm/PriorYearForms/Resident_Booklet_2022.pdf#page=22
     - title: 2023 Maryland Income Tax Instructions - Local Tax Rate Chart
-      href: https://www.marylandcomptroller.gov/content/dam/mdcomp/tax/instructions/2023/Resident_Booklet.pdf#page=23
+      href: https://www.marylandcomptroller.gov/content/dam/mdcomp/tax/instructions/2023/Resident-Booklet.pdf#page=23
     - title: 2024 Maryland Income Tax Instructions - Local Tax Rate Chart
-      href: https://www.marylandcomptroller.gov/content/dam/mdcomp/tax/instructions/2024/Resident_Booklet.pdf#page=25
+      href: https://www.marylandcomptroller.gov/content/dam/mdcomp/tax/instructions/2024/Resident-Booklet.pdf#page=25
 brackets:
   - threshold:
       2021-01-01: 0

diff --git a/policyengine_us/parameters/gov/local/md/frederick_county/tax/income/single.yaml b/policyengine_us/parameters/gov/local/md/frederick_county/tax/income/single.yaml
@@ -11,11 +11,11 @@ metadata:
     - title: Maryland Local Income Tax Rates
       href: https://services.marylandcomptroller.gov/taxes/en/maryland-income-tax-rates-and-brackets
     - title: 2022 Maryland Income Tax Instructions - Local Tax Rate Chart
-      href: https://www.marylandcomptroller.gov/content/dam/mdcomp/tax/instructions/2022/Resident_Booklet.pdf#page=22
+      href: https://interactive.marylandtaxes.gov/Individuals/iFile_ChooseForm/PriorYearForms/Resident_Booklet_2022.pdf#page=22
     - title: 2023 Maryland Income Tax Instructions - Local Tax Rate Chart
-      href: https://www.marylandcomptroller.gov/content/dam/mdcomp/tax/instructions/2023/Resident_Booklet.pdf#page=23
+      href: https://www.marylandcomptroller.gov/content/dam/mdcomp/tax/instructions/2023/Resident-Booklet.pdf#page=23
     - title: 2024 Maryland Income Tax Instructions - Local Tax Rate Chart
-      href: https://www.marylandcomptroller.gov/content/dam/mdcomp/tax/instructions/2024/Resident_Booklet.pdf#page=25
+      href: https://www.marylandcomptroller.gov/content/dam/mdcomp/tax/instructions/2024/Resident-Booklet.pdf#page=25
 brackets:
   - threshold:
       2021-01-01: 0

diff --git a/policyengine_us/parameters/gov/local/md/frederick_county/tax/income/surviving_spouse.yaml b/policyengine_us/parameters/gov/local/md/frederick_county/tax/income/surviving_spouse.yaml
@@ -11,11 +11,11 @@ metadata:
     - title: Maryland Local Income Tax Rates
       href: https://services.marylandcomptroller.gov/taxes/en/maryland-income-tax-rates-and-brackets
     - title: 2022 Maryland Income Tax Instructions - Local Tax Rate Chart
-      href: https://www.marylandcomptroller.gov/content/dam/mdcomp/tax/instructions/2022/Resident_Booklet.pdf#page=22
+      href: https://interactive.marylandtaxes.gov/Individuals/iFile_ChooseForm/PriorYearForms/Resident_Booklet_2022.pdf#page=22
     - title: 2023 Maryland Income Tax Instructions - Local Tax Rate Chart
-      href: https://www.marylandcomptroller.gov/content/dam/mdcomp/tax/instructions/2023/Resident_Booklet.pdf#page=23
+      href: https://www.marylandcomptroller.gov/content/dam/mdcomp/tax/instructions/2023/Resident-Booklet.pdf#page=23
     - title: 2024 Maryland Income Tax Instructions - Local Tax Rate Chart
-      href: https://www.marylandcomptroller.gov/content/dam/mdcomp/tax/instructions/2024/Resident_Booklet.pdf#page=25
+      href: https://www.marylandcomptroller.gov/content/dam/mdcomp/tax/instructions/2024/Resident-Booklet.pdf#page=25
 brackets:
   - threshold:
       2021-01-01: 0

diff --git a/...s/parameters/gov/local/md/montgomery_county/tax/income/credits/eitc/refundable/match.yaml b/...s/parameters/gov/local/md/montgomery_county/tax/income/credits/eitc/refundable/match.yaml
@@ -19,7 +19,7 @@ metadata:
       href: https://apps.montgomerycountymd.gov/ccllims/DownloadFilePage?FileName=11869_1_25039_Resolution_20-184_Adopted_20230525.pdf#page=28
     # 2020-2022 match was validated in Bill 14-21, which explains how and why Montgomery County provides this amount of county match for the refundable Maryland EITC.
     - title: 2020 - 2022 Expedited Finance Working Families Income Bill 14-21 Supplement Amendments 
-      href: https://www.montgomerycountymd.gov/OLO/Resources/Files/eis/2021/EIS-EBill14-21.pdf
+      href: https://assets.montgomerycountymd.gov/files/EIS-EBill14-21.pdf
     # 2015-2016 match is mentioned in Montgomery County Code (MCC), Section 20-79, "Amount of Supplement," and it is currently the most recent year referenced in the MCC.
     - title: 2015 - 2016 Montgomery County Sec. 20-81. Administration; Regulations Sec. 20-79. Amount of Supplement (a), (b)
       href: https://codelibrary.amlegal.com/codes/montgomerycounty/latest/montgomeryco_md/0-0-0-129735

diff --git a/...gine_us/parameters/gov/states/dc/tax/income/additions/self_employment_loss/threshold.yaml b/...gine_us/parameters/gov/states/dc/tax/income/additions/self_employment_loss/threshold.yaml
@@ -14,6 +14,6 @@ metadata:
     - title: 2024 DC Form D-40 Booklet, Calculation A, Line 6
       href: https://otr.cfo.dc.gov/sites/default/files/dc/sites/otr/publication/attachments/2024_D40_Booklet_011525.pdf#page=55
     - title: 2025 DC Form D-40 Booklet, Schedule I, Calculation A, Line 6
-      href: https://otr.cfo.dc.gov/sites/default/files/dc/sites/otr/publication/attachments/2025_D40_Book_Final_wLinks_021226_v1.0.pdf#page=64
+      href: https://otr.cfo.dc.gov/sites/default/files/dc/sites/otr/publication/attachments/2025_D40_Book_082026_v1.pdf#page=65
 values:
   2021-01-01: 12_000
diff --git a/policyengine_us/parameters/gov/states/dc/tax/income/credits/cdcc/match.yaml b/policyengine_us/parameters/gov/states/dc/tax/income/credits/cdcc/match.yaml
@@ -13,7 +13,7 @@ metadata:
     - title: 2024 DC Form D-40 Booklet, Page 34, Line 21
       href: https://otr.cfo.dc.gov/sites/default/files/dc/sites/otr/publication/attachments/2024_D40_Booklet_011525.pdf#page=34
     - title: 2025 DC Form D-40 Booklet, Line 21
-      href: https://otr.cfo.dc.gov/sites/default/files/dc/sites/otr/publication/attachments/2025_D40_Book_Final_wLinks_021226_v1.0.pdf#page=21
+      href: https://otr.cfo.dc.gov/sites/default/files/dc/sites/otr/publication/attachments/2025_D40_Book_082026_v1.pdf#page=43
     - title: DC Code 47-1806.04(c)(1)(B), as amended by FY2025 Budget Support Act (D.C. Act 25-506, sec. 7032)
       href: https://code.dccouncil.gov/us/dc/council/code/sections/47-1806.04
 values:

diff --git a/policyengine_us/parameters/gov/states/dc/tax/income/credits/eitc/with_children/match.yaml b/policyengine_us/parameters/gov/states/dc/tax/income/credits/eitc/with_children/match.yaml
@@ -13,7 +13,7 @@ metadata:
     - title: District of Columbia Tax Changes Take Effect October 1st 2024
       href: https://otr.cfo.dc.gov/release/district-columbia-tax-changes-take-effect-october1-24
     - title: 2025 DC Form D-40 Booklet, Line 27c
-      href: https://otr.cfo.dc.gov/sites/default/files/dc/sites/otr/publication/attachments/2025_D40_Book_Final_wLinks_021226_v1.0.pdf#page=21
+      href: https://otr.cfo.dc.gov/sites/default/files/dc/sites/otr/publication/attachments/2025_D40_Book_082026_v1.pdf#page=43
 values:
   2015-01-01: 0.4 # (f)(1)(A) and (f)(1)(B)
   2022-01-01: 0.7 # (f)(1)(B-1)

diff --git a/...us/parameters/gov/states/dc/tax/income/credits/eitc/without_children/phase_out/start.yaml b/...us/parameters/gov/states/dc/tax/income/credits/eitc/without_children/phase_out/start.yaml
@@ -17,7 +17,7 @@ metadata:
     - title: 2024 DC Form D-40 Booklet, Page 23, Line 5
       href: https://otr.cfo.dc.gov/sites/default/files/dc/sites/otr/publication/attachments/2024_D40_Booklet_011525.pdf#page=23
     - title: 2025 DC Form D-40 Booklet, Line 5
-      href: https://otr.cfo.dc.gov/sites/default/files/dc/sites/otr/publication/attachments/2025_D40_Book_Final_wLinks_021226_v1.0.pdf#page=26
+      href: https://otr.cfo.dc.gov/sites/default/files/dc/sites/otr/publication/attachments/2025_D40_Book_082026_v1.pdf#page=26
 values:
   2021-01-01: 19_743
   2022-01-01: 20_532

diff --git a/policyengine_us/parameters/gov/states/dc/tax/income/credits/kccatc/income_limit.yaml b/policyengine_us/parameters/gov/states/dc/tax/income/credits/kccatc/income_limit.yaml
@@ -27,7 +27,7 @@ metadata:
     - title: District of Columbia Tax Changes Take Effect October 1st 2024
       href: https://otr.cfo.dc.gov/release/district-columbia-tax-changes-take-effect-october1-24
     - title: 2025 DC Form D-40 Booklet, Schedule ELC
-      href: https://otr.cfo.dc.gov/sites/default/files/dc/sites/otr/publication/attachments/2025_D40_Book_Final_wLinks_021226_v1.0.pdf#page=70
+      href: https://otr.cfo.dc.gov/sites/default/files/dc/sites/otr/publication/attachments/2025_D40_Book_082026_v1.pdf#page=71
 
 SINGLE:
   values:

diff --git a/policyengine_us/parameters/gov/states/dc/tax/income/credits/kccatc/max_age.yaml b/policyengine_us/parameters/gov/states/dc/tax/income/credits/kccatc/max_age.yaml
@@ -15,6 +15,6 @@ metadata:
     - title: 2024 DC Form D-40 Booklet, Page 60, Schedule ELC
       href: https://otr.cfo.dc.gov/sites/default/files/dc/sites/otr/publication/attachments/2024_D40_Booklet_011525.pdf#page=60
     - title: 2025 DC Form D-40 Booklet, Schedule ELC
-      href: https://otr.cfo.dc.gov/sites/default/files/dc/sites/otr/publication/attachments/2025_D40_Book_Final_wLinks_021226_v1.0.pdf#page=70
+      href: https://otr.cfo.dc.gov/sites/default/files/dc/sites/otr/publication/attachments/2025_D40_Book_082026_v1.pdf#page=71
 values:
   2018-01-01: 3
diff --git a/policyengine_us/parameters/gov/states/dc/tax/income/credits/kccatc/max_amount.yaml b/policyengine_us/parameters/gov/states/dc/tax/income/credits/kccatc/max_amount.yaml
@@ -18,13 +18,13 @@ metadata:
     - title: 2022 DC Form D-40 Booklet, Schedule ELC
       href: https://otr.cfo.dc.gov/sites/default/files/dc/sites/otr/publication/attachments/2022_D-40_Booklet_Final_blk_01_23_23_Ordc.pdf#page=59
     - title: 2023 DC Form D-40 Booklet, Schedule ELC
-      href: https://otr.cfo.dc.gov/sites/default/files/dc/sites/otr/publication/attachments/2023_D40_Book_Final_012324#page=59
+      href: https://otr.cfo.dc.gov/sites/default/files/dc/sites/otr/publication/attachments/2023_D40_Book_Final_012324.pdf#page=59
     - title: 2024 DC Form D-40 Booklet, Page 60, Schedule ELC
       href: https://otr.cfo.dc.gov/sites/default/files/dc/sites/otr/publication/attachments/2024_D40_Booklet_011525.pdf#page=60
     - title: District of Columbia Tax Changes Take Effect October 1st 2024
       href: https://otr.cfo.dc.gov/release/district-columbia-tax-changes-take-effect-october1-24
     - title: 2025 DC Form D-40 Booklet, Schedule ELC
-      href: https://otr.cfo.dc.gov/sites/default/files/dc/sites/otr/publication/attachments/2025_D40_Book_Final_wLinks_021226_v1.0.pdf#page=70
+      href: https://otr.cfo.dc.gov/sites/default/files/dc/sites/otr/publication/attachments/2025_D40_Book_082026_v1.pdf#page=71
 values:
   2018-01-01: 1_000
   2020-01-01: 1_010

diff --git a/policyengine_us/parameters/gov/states/dc/tax/income/credits/ptc/fraction_elderly.yaml b/policyengine_us/parameters/gov/states/dc/tax/income/credits/ptc/fraction_elderly.yaml
@@ -20,7 +20,7 @@ metadata:
     - title: District of Columbia Tax Changes Take Effect October 1st 2024
       href: https://otr.cfo.dc.gov/release/district-columbia-tax-changes-take-effect-october1-24
     - title: 2025 DC Form D-40 Booklet, Schedule H
-      href: https://otr.cfo.dc.gov/sites/default/files/dc/sites/otr/publication/attachments/2025_D40_Book_Final_wLinks_021226_v1.0.pdf#page=55
+      href: https://otr.cfo.dc.gov/sites/default/files/dc/sites/otr/publication/attachments/2025_D40_Book_082026_v1.pdf#page=56
 brackets:
   - threshold:
       2021-01-01: -.inf

diff --git a/policyengine_us/parameters/gov/states/dc/tax/income/credits/ptc/fraction_nonelderly.yaml b/policyengine_us/parameters/gov/states/dc/tax/income/credits/ptc/fraction_nonelderly.yaml
@@ -20,7 +20,7 @@ metadata:
     - title: District of Columbia Tax Changes Take Effect October 1st 2024
       href: https://otr.cfo.dc.gov/release/district-columbia-tax-changes-take-effect-october1-24
     - title: 2025 DC Form D-40 Booklet, Schedule H
-      href: https://otr.cfo.dc.gov/sites/default/files/dc/sites/otr/publication/attachments/2025_D40_Book_Final_wLinks_021226_v1.0.pdf#page=55
+      href: https://otr.cfo.dc.gov/sites/default/files/dc/sites/otr/publication/attachments/2025_D40_Book_082026_v1.pdf#page=56
 brackets:
   - threshold:
       2021-01-01: -.inf
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1 @@
		Replace dead Maryland, DC, Delaware, Pennsylvania, Virginia, West Virginia and New Jersey reference URLs with live successors or pinned Wayback captures, and guard against their return.