Zero out Income Support and income-based JSA after managed migration#1631
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Zero out Income Support and income-based JSA after managed migration#1631
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Income Support and income-based Jobseeker's Allowance were abolished on 31 March 2026 (last payments) following DWP's completion of managed migration to Universal Credit. New `gov.dwp.income_support.active` and `gov.dwp.JSA.income.active` bool parameters flip to false from 2026-04-01; the formulas now return zero when inactive. Contribution-based JSA is a separate scheme and remains active. Mirrors the Tax Credits phase-out template (#1619). Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Add yaml regression tests for `housing_benefit_eligible` exercising the `& ~claiming_uc` clause that prevents a benunit on Universal Credit from also being eligible for Housing Benefit. The contract already holds today via the explicit guard in the eligibility formula, but nothing pinned it as a test, so a future refactor could silently allow simultaneous UC + HB awards. Other legacy benefit consistency is enforced via: - Reported anchors (`jsa_income`, `esa_income` only pay reported amounts, so unreported families don't double-up with UC). - `active.yaml` flags shutting Tax Credits, Income Support and income-based JSA off post-managed-migration (PRs #1619, #1631). Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This was referenced Apr 20, 2026
MaxGhenis
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Apr 20, 2026
Add yaml regression tests for `housing_benefit_eligible` exercising the `& ~claiming_uc` clause that prevents a benunit on Universal Credit from also being eligible for Housing Benefit. The contract already holds today via the explicit guard in the eligibility formula, but nothing pinned it as a test, so a future refactor could silently allow simultaneous UC + HB awards. Other legacy benefit consistency is enforced via: - Reported anchors (`jsa_income`, `esa_income` only pay reported amounts, so unreported families don't double-up with UC). - `active.yaml` flags shutting Tax Credits, Income Support and income-based JSA off post-managed-migration (PRs #1619, #1631). Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Summary
gov.dwp.income_support.activeandgov.dwp.JSA.income.activebool parameters that flip tofalsefrom 2026-04-01.income_supportandjsa_incomeformulas to return zero when inactive.jsa_contrib) is a separate scheme and remains active — no change.Why
policyengine_ukwas overstating Income Support spending by roughly +£0.9bn vs DWP outturn because the dataset carries reported IS values from the 2022/23 FRS, which the model projects forward indefinitely. With this fix, post-migration years correctly project to zero.References:
Test plan
income_support_post_migration.yamlwith 6 tests (IS active in 2025, zero in 2026+, income-based JSA active in 2025, zero in 2026+, contribution-based JSA unaffected)jsa_income_capital.yamltests from 2026 → 2025 (they were implicitly relying on the scheme being active)esa_income_capital.yamltest: moved 2026 → 2025, adjusted expected IS entitlement accordinglypolicyengine_uk/tests/policy/suite: 971 passed locally🤖 Generated with Claude Code