[vahid-ahmadi]

Corrects the non-UK household benefit receipt planning page (docs/book/assumptions/non-uk-benefit-receipt-plan.md), written for #842.

The page itself is already on main: it shipped in #2386 (merged 21 October 2026), and its original .added changelog entry was released in 2.143.0. This branch has merged main, dropped the released fragment and now carries only corrections to main's copy of the page.

What this PR corrects (from its changelog fragment):

Corrected the non-UK benefit receipt planning page (docs/book/assumptions/non-uk-benefit-receipt-plan.md): Microcosm UK's resident State Pension series removes pensions paid abroad but still includes care-home residents, the Enhanced FRS keeps its own targets, fraud and error overpayments reach households, so they are treated separately, Winter Fuel Payment has not been paid abroad since winter 2025-26, Housing Benefit doesn't pay for a care-home place, Attendance Allowance can be paid abroad in limited cases, and the overseas share of State Pension spending has fallen since 2019-20.

The claim-by-claim review behind these corrections, with sources, is in the "Ready for hub review" comment on this PR.

• Changelog fragment: changelog.d/842-non-uk-benefit-receipt-page-corrections.changed.md (changed).
• Docs and changelog only; no code changes.

🤖 Generated with Claude Code

[MaxGhenis]

UK hub (Claude build session, for Max)
Ready for hub review

Head: 35a658ee328d6e8730b2e34da98b4009fc2a68b5

Context. This page already reached main, byte for byte, through #2386 (merged 21 October 2026; batch commit d50ee85), and its 842.added.md entry is already in CHANGELOG.md under 2.143.0. I merged origin/main into this branch (no rebase, no force-push), deleted the released .added fragment, and corrected the page. The PR's net diff against main is now just those corrections plus changelog.d/842-non-uk-benefit-receipt-page-corrections.changed.md. Suggested title: "Correct the non-UK benefit receipt planning page".

Review. I had a verifier extract and check every claim, checked each correction myself, and then ran independent adversarial reviews. Rounds 1 and 2 asked for changes, and round 3 approved; its optional HMRC reference line is folded into this head.

Corrected (18)

Fraud and error

1. Fraud and error overpayments reach households. They now sit in their own paragraph, in the note and in Phase 1, rather than among spending that misses households: 3.2% overpaid and 0.4% underpaid through official error, per DWP's FYE 2026 estimates (https://www.gov.uk/government/collections/fraud-and-error-in-the-benefit-system).
2. UC advances are not benefit payments, per the same release.

Calibration targets
3. Microcosm UK sets its own targets. The Enhanced FRS, which this repo's microsimulation tests and aggregate-impact report run on, keeps its own target set, which still binds the OBR State Pension line (uk-data source_manifests/obr_march_2026.yaml:54; policyengine_uk/tests/certified_dataset.yaml).

Disability and carer benefits abroad, and care homes
4. Only the DLA care component, PIP daily living, AA and Carer's Allowance can be paid abroad, to people in the EEA or Switzerland covered by the Withdrawal Agreement; the mobility parts can't (https://www.gov.uk/claim-benefits-abroad/disability-benefits).
5. Care-home residents keep their State Pension and some other benefits, but not "most benefits". There is no HB for a care-home place (HB Regs 2006 reg. 9(1)(k) and (4), and the pension-age equivalent SI 2006/214 reg. 9). PIP daily living stops when care is publicly funded (PIP Regs 2013 reg. 28). The DLA care component also stops (DLA Regs 1991 reg. 9). Both mobility parts continue.

Microcosm's State Pension change
6. Microcosm's change covers State Pension paid abroad only: its Great Britain resident series still includes care-home residents (Microcosm uk_population_targets.json; microcosm#1084, merged 2 October 2026).
7. microcosm#1069 now tracks follow-ups.

Table cells
8. The first column is "Published total"; no private-household totals are published.
9. State Pension has care-home residents and published fraud and error.
10. Pension Credit has published fraud and error (10.0%) and requires Great Britain residence.
11. Housing Benefit has no care-home place.
12. Child Benefit fraud and error is published (HMRC annual report and accounts; the C&AG's 2023-24 report gives 1.6%).
13. DLA/PIP have published fraud and error, an outside-UK line in DWP's tables, and keep both mobility parts in care homes.
14. Attendance Allowance has an outside-UK line (£33.6m in 2024-25) and published fraud and error.
15. Winter Fuel Payment has had no overseas payments since winter 2025-26: SI 2025/969 reg. 2 for England and Wales, SR 2025/142 reg. 2 for Northern Ireland. Care-home residents can still get it.

Other
16. The overseas share of State Pension spending fell, from 4.3% (2019-20) to 3.9% (2024-25), in DWP's Spring Forecast 2026 outturn tables; it did not rise after EU exit.
17. The FRS "does sample" supported accommodation is unsupported (FRS QAR §3.1 excludes communal establishments), so the sentence is now conditional.
18. The HMRC reference was a tax credits collection with no Child Benefit data. It is replaced with GOV.UK "Child Benefit if you leave the UK" and HMRC's annual report and accounts.

Checked and correct (unchanged)

• Account for non-UK household benefit receipt #842 is open.
• microcosm#1084 binds State Pension to Stat-Xplore Great Britain and Northern Ireland DfC resident figures, with the OBR line and DWP's "paid outside UK" line kept as diagnostics.
• programs.yaml holds coverage metadata only.
• The FRS excludes communal establishments.
• DWP's tables report State Pension paid outside the UK, and Stat-Xplore has a country field.
• private_household_share doesn't exist on main, and all links return 200.