[anth-volk]

Fixes #2210

Housing Benefit ordinary applicable income now excludes Child Benefit and Sure Start Maternity Grants (main already counted only the claimant's and partner's own income, under the mask it gained in 2b635faea). Only the claimant's and partner's income, tax, National Insurance and pension contributions enter the ordinary calculation. The shared hb_income_before_deductions helper is retained for dependent accommodation-timing work.

This branch integrated #2368 at df51910e215dc32b8a281080572b3f48a9b1de15 before it merged, and has since merged main (bdd54c545), folding in #2573's spousal maintenance (less the £15 disregard) and Widowed Parent's Allowance (less £15). Statutory paternity pay is taxed with statutory sick and maternity pay, and counts in Housing Benefit and Council Tax Reduction earnings with its tax and NI deducted. The related Universal Credit cases and properties are retained.

The conflicting source is resolved by placing SPP in the helper's personal-benefit list while retaining the Child Benefit/SSMG exclusions and claimant/partner masks. The conflicting YAML retains both sets of cases. A combined regression includes taxable SPP for the claimant and a dependent, Child Benefit and SSMG: only the claimant's £20,388.64 earnings less £1,563.728 tax and £625.4944 NI counts, giving £18,199.42 with disregards pinned to zero. The original SPP case remains £17,939.42 after its £260 earnings disregard.

Existing Guarantee Credit/legacy-benefit/UC passports and the separate Savings Credit-only calculation are retained. Embedded government citations cover the GB and NI disregards and statutory-pay earnings provisions. Original author Anthony Volk's history is preserved; main 55cd7fb04bbb36085c8eb8594209f1f6f39e9ea9 was merged in 41230b756386ef9b198757f04e71ec1c41fca24e and the #2368 integration is 9a515bff628bb321f69f9e33f35c4d0299d06b03.

Validation: 0 runtime tests executed. The required reservation check denied uk-hub because route-a-release-rerun-d1811-2026-10-23 holds the host. No runtime test or collection was started and no test environment was installed. CI must provide runtime validation. Static focused inventory: 89 YAML cases (21 applicable-income; 13 HB net-earnings; 38 HB accommodation-disregard; 10 UC statutory-pay; 5 employment-benefits; 2 CTR statutory-pay) and 14 Python tests (5 SPP tax; 9 UC statutory-pay), 103 total. Both parent sets were checked for retention. Ruff format and check passed for all 9 changed Python files; repository-wide uvx ruff format --check . passed on 1,965 files; git diff --check passed.

#1995 still owns capital-derived income and must preserve these exclusions when reconciling the shared helper. Keep #2225 parent-gated until this PR lands. Hub independent review and CI remain outstanding. No microsimulation or dataset build was run.

Reproducer: policyengine_uk/tests/policy/baseline/finance/benefit/family/housing_benefit/applicable_income/housing_benefit_applicable_income.yaml::Child Benefit is fully disregarded, policyengine_uk/tests/policy/baseline/finance/benefit/family/housing_benefit/applicable_income/housing_benefit_applicable_income.yaml::Taxable statutory paternity pay counts while disregarded family income and tax stay excluded

axiom: needed

[MaxGhenis]

Build hand-off: local verification blocked by the required disk gate.

Remote head remains d91378be94d5678e4ac40cda5ead37fd3344106e. Local head is 29e30044bf85dbb945f299dedacfc8419d458831 (committed; not pushed), merging main d62d5f3b6d66c0a9657d26cca66bc5e6a5b7dd00 without rewriting author history.

Reconciled the ordinary-income helper with main's claimant/partner JSA/ESA readers, IIDB/SDA/Incapacity Benefit, pension-deduction parameter and passports. Combined all main/PR income cases and added a counted-benefits regression case: 18 applicable-income YAML cases prepared. No additional simulation.py edits.

Legal reading: reg 25(3) excludes a child's own income. Adult-received Child Benefit is separately disregarded by GB Sch 5 para 65 / NI Sch 6 para 64; pension-age exclusions are GB reg 29(1)(j)(vi) / NI reg 27(1)(h)(v). Social Fund grants are excluded by GB Sch 5 para 31 / NI Sch 6 para 32 and pension-age GB reg 29(1)(j)(ix) / NI reg 27(1)(h)(viii). No unresolved current-law interpretation. Full working-age Child Benefit disregard starts 2 November 2009; pre-2009 assessment is outside this verified scope. Child-income masking is already on main; the Child Benefit/SSMG exclusions are not superseded.

#1995 coordination: apply its property-income replacement inside the helper at line 56 (property_income_after_finance_costs → legacy_benefits_home_letting_income) and its tax replacement at line 76 (income_tax → legacy_means_test_income_tax), plus shared documentation/references. Those changes stay with #1995; its eventual merge must preserve the exclusions and main's claimant/partner mask.

Validation: 0 tests executed. The foreground runner checked the specified gate 31 times over 15 minutes; free disk never reached 55 GB decimal (final reading about 51.36 GB), despite removal of this job's install cache. No threshold override used. Locked clone sync succeeded (core 3.33.2). uvx ruff format --check . passed on 1,942 files; focused ruff check and git diff --check passed. No microsimulation or in-job review.

Open items: restore disk ≥55 GB and load1 ≤110; run .job/run-focused.py (pytest -n 2); push once; apply .job/pr-2211-body.md with final test counts; hub independent review and landing. The PR body is prepared locally; the published body remains unchanged because the remote head is unchanged. Keep #2225 parent-gated until #2211 lands.

Recovery: sandbox-local Git metadata is in .job/git, and .job/2211-local.bundle verifies successfully. The original linked metadata/pointer were read-only, so the hub must harvest the local metadata/bundle; automatic caller-worktree salvage HEAD remains the original checkout. All files and reports remain in the assigned workspace.

[github-actions]

Aggregate impact on certified data: pass

Base c417f283a9 against head 4feb3c5536, both on enhanced_frs_2024_25.h5 (policyengine-uk-data 1.58.1, sha256 056e80fd8e91), fiscal years 2025-26 to 2031-32. Each year is a full microsimulation run on each side.

Checks: 0 broken by this change, 1 failing on both sides, 0 fixed. Moves flagged for review: 0 (thresholds in report_spec.yaml; a flag does not fail the job).

Workflow run and full report

Notes

• In the years a figure from fewer than 10 records is suppressed (spending.disabled_students_allowance), every total containing it, and the decile incomes, are rebuilt from their other components, so no published total includes it. Those totals are marked †. A change is withheld where the two sides leave out different figures and can't be lined up.

Moves flagged for review

None.

Spending by benefit and service

Measure	2025-26	2026-27	2027-28	2028-29	2029-30	2030-31	2031-32
Disabled Students' Allowance	suppressed	suppressed	suppressed	suppressed	suppressed	suppressed	suppressed

Caseloads

Measure	2025-26	2026-27	2027-28	2028-29	2029-30	2030-31	2031-32
Disabled Students' Allowance	suppressed	suppressed	suppressed	suppressed	suppressed	suppressed	suppressed

Standard reform costings (change in gov_balance)

Measure	2025-26	2026-27	2027-28	2028-29	2029-30	2030-31	2031-32
Raise additional rate by 3pp	0	0	0	0	0	suppressed	suppressed

Standard reforms: change in each reform's target

Measure	2025-26	2026-27	2027-28	2028-29	2029-30	2030-31	2031-32
Raise additional rate by 3pp: change in income_tax	0	0	0	0	0	suppressed	suppressed

Household net income by decile

No household's net income changes in any year.

No change in any year: receipts by tax head; government balance, each component counted once; model totals; household income totals; population; poverty rates; people in poverty; inequality; mean household net income in each side's own deciles.

Checks failing on both base and head (1)

• VAT is never negative (sign:vat): 2025-26: 76 units below zero, a weighted £-54,797,972 in total; 2026-27: 76 units below zero, a weighted £-56,271,349 in total; 2027-28: 76 units below zero, a weighted £-57,609,146 in total

Counted-once check

Each of 85 components was raised by £1 per unit in 2026-27, and every head of its totals was read household by household: its own head must rise by exactly £1, no other tax head may move, no other benefit may rise, and the model's own total must move by what its heads moved. A head that breaks a rule is measured again twice: with every other head held at its baseline value, and with every other head held at its value after the first £1 while the component rises again. It fails where either still shows the response. 0 failed; 0 were skipped.

• widowed_parents_allowance: pension_credit responds only through other heads in fewer than 10 households (other heads that moved there: carers_allowance; gov_spending; not a failure)
• widowed_parents_allowance: pension_credit responds only through other heads in fewer than 10 households (other heads that moved there: carers_allowance; household_benefits; not a failure)

Provenance

Side	Commit	Runtime	Environment hash	Partition hash	Time
base	main c417f283a9	uk 2.150.0 (files 566a634e0b21), core 3.33.2, py 3.13.17 aarch64	d7bfc3b1aa82	04ce3b8f2ab6	1607.66s
head	#2211 merged into main 4feb3c5536	uk 2.150.0 (files 89b9c15e6df6), core 3.33.2, py 3.13.17 aarch64	d7bfc3b1aa82	04ce3b8f2ab6	1594.04s

Dataset: hf://policyengine/policyengine-uk-data-private/enhanced_frs_2024_25.h5@2526edbbb687a3b54dbb11272e5389e4b62d2ac2, sha256 056e80fd8e9151d78f432a25cde863340baee81304c6216a37fb575ce8563784 (verified on both sides), policyengine-uk-data 1.58.1.

Receipts by tax head: head levels

Measure (head)	2025-26	2026-27	2027-28	2028-29	2029-30	2030-31	2031-32
Income tax	£299.29bn	£319.01bn	£336.54bn	£351.69bn	£367.24bn	£385.36bn	£403.66bn
National Insurance (employee and self-employed)	£52.58bn	£54.94bn	£56.75bn	£58.48bn	£60.62bn	£62.57bn	£65.03bn
National Insurance (employer)	£152.64bn	£159.18bn	£164.14bn	£168.73bn	£176.11bn	£181.72bn	£188.90bn
Employer NI change borne by capital	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn
Employer NI change borne by consumers	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn
Capital gains tax	£12.62bn	£13.06bn	£13.55bn	£14.04bn	£14.54bn	£15.09bn	£15.65bn
Student loan repayments	£7.83bn	£8.12bn	£8.35bn	£8.56bn	£8.79bn	£9.04bn	£9.38bn
VAT	£253.71bn	£260.53bn	£266.72bn	£273.14bn	£279.83bn	£286.71bn	£293.71bn
Change in VAT from its baseline	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn
VAT on private school fees	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn
Fuel duties	£24.53bn	£24.64bn	£26.64bn	£26.69bn	£26.42bn	£25.76bn	£26.35bn
Alcohol duties	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn
Tobacco duties	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn
Vehicle excise duties	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn
TV licence fee	£4.28bn	£4.43bn	£4.44bn	£4.46bn	£4.48bn	£4.51bn	£4.53bn
Council tax	£49.21bn	£51.88bn	£54.97bn	£58.29bn	£61.55bn	£64.92bn	£68.49bn
High value council tax surcharge	£0.00bn	£0.00bn	£0.00bn	£0.48bn	£0.49bn	£0.51bn	£0.52bn
Northern Ireland domestic rates	£0.55bn	£0.58bn	£0.61bn	£0.63bn	£0.67bn	£0.70bn	£0.73bn
Business rates	£31.73bn	£31.73bn	£31.73bn	£31.73bn	£31.73bn	£31.73bn	£31.73bn
Stamp duty land tax on the household's own purchases	£6.93bn	£7.42bn	£7.85bn	£8.26bn	£8.68bn	£9.09bn	£9.51bn
Stamp duty land tax paid by companies	£3.13bn	£3.13bn	£3.13bn	£3.13bn	£3.13bn	£3.13bn	£3.13bn
Land transaction tax (Wales)	£0.08bn	£0.08bn	£0.09bn	£0.09bn	£0.10bn	£0.10bn	£0.11bn
Land and buildings transaction tax (Scotland)	£0.31bn	£0.32bn	£0.34bn	£0.36bn	£0.37bn	£0.39bn	£0.40bn
Unspecified tax change borne by capital	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn
Unspecified tax change borne by consumers	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn
Wealth tax	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn
Wealth tax excluding the main residence	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn
Land value tax	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn
Carbon tax	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn

Spending by benefit and service: head levels

Measure (head)	2025-26	2026-27	2027-28	2028-29	2029-30	2030-31	2031-32
State Pension	£122.15bn	£126.64bn	£127.76bn	£129.65bn	£133.46bn	£137.40bn	£141.47bn
Pension Credit	£6.68bn	£7.07bn	£7.09bn	£7.16bn	£7.28bn	£7.42bn	£7.52bn
Winter Fuel Payment	£1.70bn	£1.68bn	£1.59bn	£1.57bn	£1.57bn	£1.55bn	£1.52bn
Pension Age Winter Heating Payment (Scotland)	£0.19bn	£0.20bn	£0.20bn	£0.21bn	£0.21bn	£0.22bn	£0.22bn
Universal Credit	£75.54bn	£80.75bn	£83.40bn	£85.21bn	£86.21bn	£87.61bn	£88.91bn
Housing Benefit	£8.59bn	£8.93bn	£9.19bn	£9.33bn	£9.61bn	£9.87bn	£10.15bn
Council Tax Reduction	£1.98bn	£2.03bn	£2.07bn	£2.11bn	£2.16bn	£2.21bn	£2.25bn
Employment and Support Allowance (income-related)	£0.79bn	£0.81bn	£0.83bn	£0.85bn	£0.87bn	£0.89bn	£0.91bn
Employment and Support Allowance (contribution-based)	£5.22bn	£5.36bn	£5.49bn	£5.62bn	£5.76bn	£5.90bn	£6.04bn
Jobseeker's Allowance (income-based)	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn
Jobseeker's Allowance (contribution-based)	£0.29bn	£0.30bn	£0.30bn	£0.31bn	£0.32bn	£0.33bn	£0.33bn
Income Support	£0.12bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn
Working Tax Credit	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn
Child Tax Credit	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn
Incapacity Benefit	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn
Personal Independence Payment	£27.05bn	£28.19bn	£29.28bn	£30.02bn	£30.75bn	£31.51bn	£32.28bn
Disability Living Allowance	£7.52bn	£7.83bn	£8.14bn	£8.34bn	£8.55bn	£8.76bn	£8.97bn
Attendance Allowance	£8.71bn	£9.08bn	£9.43bn	£9.67bn	£9.90bn	£10.15bn	£10.40bn
Carer's Allowance	£4.50bn	£4.69bn	£4.87bn	£4.99bn	£5.11bn	£5.23bn	£5.36bn
Carer Support Payment (Scotland)	£0.31bn	£0.32bn	£0.34bn	£0.34bn	£0.35bn	£0.36bn	£0.37bn
Carer's Allowance Supplement (Scotland)	£0.00bn	£0.04bn	£0.04bn	£0.04bn	£0.04bn	£0.04bn	£0.04bn
Severe Disablement Allowance	£0.03bn	£0.03bn	£0.03bn	£0.03bn	£0.03bn	£0.03bn	£0.03bn
Industrial Injuries Disablement Benefit	£0.51bn	£0.52bn	£0.53bn	£0.54bn	£0.56bn	£0.57bn	£0.59bn
Armed Forces Compensation Scheme	£0.61bn	£0.62bn	£0.64bn	£0.65bn	£0.67bn	£0.69bn	£0.70bn
War Widow's or Widower's Pension	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn
Child Benefit	£16.23bn	£16.91bn	£17.53bn	£17.96bn	£18.39bn	£18.84bn	£19.29bn
Scottish Child Payment	£0.50bn	£0.52bn	£0.53bn	£0.55bn	£0.56bn	£0.57bn	£0.58bn
Two Child Limit Payment (Scotland, counterfactual)	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn
Healthy Start vouchers	£0.05bn	£0.05bn	£0.05bn	£0.05bn	£0.05bn	£0.05bn	£0.05bn
Maternity Allowance	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn
Statutory Maternity Pay	£3.32bn	£3.41bn	£3.49bn	£3.57bn	£3.66bn	£3.75bn	£3.84bn
Statutory Paternity Pay	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn
Statutory Sick Pay	£1.13bn	£1.16bn	£1.19bn	£1.22bn	£1.25bn	£1.28bn	£1.31bn
Sure Start Maternity Grant	£0.01bn	£0.01bn	£0.01bn	£0.01bn	£0.01bn	£0.01bn	£0.01bn
Bereavement Support Payment	£0.67bn	£0.69bn	£0.70bn	£0.72bn	£0.74bn	£0.76bn	£0.78bn
Widowed Parent's Allowance	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn
Tax-Free Childcare	£0.55bn	£0.56bn	£0.57bn	£0.58bn	£0.60bn	£0.61bn	£0.59bn
Extended childcare entitlement	£2.77bn	£3.27bn	£3.36bn	£3.43bn	£3.53bn	£3.61bn	£3.70bn
Universal childcare entitlement	£2.26bn	£2.45bn	£2.51bn	£2.58bn	£2.64bn	£2.72bn	£2.78bn
Targeted childcare entitlement	£0.47bn	£0.49bn	£0.50bn	£0.51bn	£0.52bn	£0.53bn	£0.47bn
Care to Learn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn
Childcare Grant	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn
Parents' Learning Allowance	£0.20bn	£0.20bn	£0.20bn	£0.20bn	£0.20bn	£0.20bn	£0.20bn
Adult Dependants' Grant	£0.06bn	£0.06bn	£0.04bn	£0.04bn	£0.04bn	£0.04bn	£0.04bn
Travel Grant	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn
Disabled Students' Allowance	suppressed	suppressed	suppressed	suppressed	suppressed	suppressed	suppressed
16 to 19 Bursary Fund	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn
NHS spending	£204.68bn	£205.46bn	£206.22bn	£207.04bn	£207.96bn	£208.89bn	£209.79bn
State education spending	£0.02bn	£0.02bn	£0.02bn	£0.02bn	£0.02bn	£0.02bn	£0.02bn
Transport subsidy spending	£25.15bn	£25.25bn	£25.34bn	£25.44bn	£25.55bn	£25.67bn	£25.78bn
Cost-of-living support payment	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn
Energy Bills Rebate	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn
Energy Price Guarantee subsidy	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn
Basic income	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn
Disability basic income	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn
Other public spending budget change	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn

Caseloads: head levels

Measure (head)	2025-26	2026-27	2027-28	2028-29	2029-30	2030-31	2031-32
State Pension	11,308k	11,208k	10,906k	10,812k	10,860k	10,908k	10,955k
Pension Credit	1,491k	1,489k	1,478k	1,459k	1,459k	1,456k	1,453k
Winter Fuel Payment	7,091k	7,011k	6,599k	6,512k	6,493k	6,379k	6,248k
Pension Age Winter Heating Payment (Scotland)	806k	807k	807k	805k	809k	812k	816k
Universal Credit	6,361k	6,370k	6,404k	6,419k	6,390k	6,387k	6,368k
Housing Benefit	1,254k	1,252k	1,254k	1,239k	1,245k	1,247k	1,249k
Council Tax Reduction	3,187k	3,212k	3,224k	3,245k	3,262k	3,280k	3,294k
Employment and Support Allowance (income-related)	71k	71k	71k	72k	72k	72k	72k
Employment and Support Allowance (contribution-based)	722k	724k	727k	730k	733k	737k	740k
Jobseeker's Allowance (income-based)	0k	0k	0k	0k	0k	0k	0k
Jobseeker's Allowance (contribution-based)	67k	67k	68k	68k	68k	69k	69k
Income Support	25k	0k	0k	0k	0k	0k	0k
Working Tax Credit	0k	0k	0k	0k	0k	0k	0k
Child Tax Credit	0k	0k	0k	0k	0k	0k	0k
Incapacity Benefit	0k	0k	0k	0k	0k	0k	0k
Personal Independence Payment	3,581k	3,595k	3,608k	3,623k	3,639k	3,655k	3,671k
Disability Living Allowance	1,296k	1,301k	1,306k	1,311k	1,317k	1,323k	1,329k
Attendance Allowance	1,701k	1,708k	1,714k	1,721k	1,729k	1,736k	1,744k
Carer's Allowance	1,038k	1,042k	1,046k	1,050k	1,055k	1,059k	1,064k
Carer Support Payment (Scotland)	71k	72k	72k	72k	73k	73k	73k
Carer's Allowance Supplement (Scotland)	0k	72k	72k	72k	73k	73k	73k
Severe Disablement Allowance	4k	4k	4k	4k	4k	4k	4k
Industrial Injuries Disablement Benefit	137k	138k	139k	139k	140k	140k	141k
Armed Forces Compensation Scheme	94k	94k	94k	95k	95k	95k	96k
War Widow's or Widower's Pension	0k	0k	0k	0k	0k	0k	0k
Child Benefit	8,136k	8,165k	8,185k	8,215k	8,249k	8,282k	8,314k
Scottish Child Payment	352k	354k	355k	359k	357k	358k	357k
Two Child Limit Payment (Scotland, counterfactual)	0k	0k	0k	0k	0k	0k	0k
Healthy Start vouchers	200k	201k	202k	203k	204k	204k	205k
Maternity Allowance	0k	0k	0k	0k	0k	0k	0k
Statutory Maternity Pay	334k	335k	336k	338k	339k	341k	342k
Statutory Paternity Pay	0k	0k	0k	0k	0k	0k	0k
Statutory Sick Pay	182k	183k	183k	184k	185k	186k	186k
Sure Start Maternity Grant	26k	26k	26k	27k	27k	27k	27k
Bereavement Support Payment	98k	98k	99k	99k	100k	100k	101k
Widowed Parent's Allowance	0k	0k	0k	0k	0k	0k	0k
Tax-Free Childcare	1,018k	1,029k	1,028k	1,033k	1,034k	1,039k	1,023k
Extended childcare entitlement	718k	724k	728k	732k	737k	741k	743k
Universal childcare entitlement	986k	989k	992k	997k	1,002k	1,013k	1,015k
Targeted childcare entitlement	98k	98k	96k	96k	96k	97k	84k
Care to Learn	0k	0k	0k	0k	0k	0k	0k
Childcare Grant	0k	0k	0k	0k	0k	0k	0k
Parents' Learning Allowance	98k	99k	99k	100k	100k	100k	101k
Adult Dependants' Grant	18k	18k	12k	13k	13k	13k	13k
Travel Grant	0k	0k	0k	0k	0k	0k	0k
Disabled Students' Allowance	suppressed	suppressed	suppressed	suppressed	suppressed	suppressed	suppressed
16 to 19 Bursary Fund	0k	0k	0k	0k	0k	0k	0k
Cost-of-living support payment	0k	0k	0k	0k	0k	0k	0k
Energy Bills Rebate	0k	0k	0k	0k	0k	0k	0k
Energy Price Guarantee subsidy	0k	0k	0k	0k	0k	0k	0k
Basic income	0k	0k	0k	0k	0k	0k	0k
Disability basic income	0k	0k	0k	0k	0k	0k	0k

Government balance, each component counted once: head levels

Measure (head)	2025-26	2026-27	2027-28	2028-29	2029-30	2030-31	2031-32
Government receipts, each component once	£899.40bn	£939.05bn	£975.84bn	£1,008.78bn	£1,044.74bn	£1,081.33bn	£1,121.83bn
Government spending	£530.58bn †	£545.59bn †	£553.49bn †	£560.60bn †	£569.15bn †	£578.31bn †	£587.34bn †
Government balance, each receipt once	£368.81bn †	£393.46bn †	£422.35bn †	£448.18bn †	£475.59bn †	£503.02bn †	£534.49bn †
Benefits in household_benefits but not in gov_spending	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn	£0.00bn

Model totals: head levels

Measure (head)	2025-26	2026-27	2027-28	2028-29	2029-30	2030-31	2031-32
gov_tax	£899.40bn	£939.05bn	£975.84bn	£1,008.78bn	£1,044.74bn	£1,081.33bn	£1,121.83bn
household_tax	£493.05bn	£519.34bn	£544.98bn	£566.91bn	£588.80bn	£612.89bn	£639.22bn
pre_budget_change_household_tax	£485.22bn	£511.22bn	£536.63bn	£557.87bn	£579.52bn	£603.35bn	£629.33bn
gov_spending	£530.58bn †	£545.59bn †	£553.49bn †	£560.60bn †	£569.15bn †	£578.31bn †	£587.34bn †
household_benefits	£530.58bn †	£545.59bn †	£553.49bn †	£560.60bn †	£569.15bn †	£578.31bn †	£587.34bn †
gov_balance	£368.81bn †	£393.46bn †	£422.35bn †	£448.18bn †	£475.59bn †	£503.02bn †	£534.49bn †

Household income totals: head levels

Measure (head)	2025-26	2026-27	2027-28	2028-29	2029-30	2030-31	2031-32
Household market income	£1,657.06bn	£1,719.25bn	£1,771.68bn	£1,821.99bn	£1,872.88bn	£1,930.99bn	£2,001.98bn
Household net income	£1,655.33bn †	£1,704.74bn †	£1,738.31bn †	£1,772.74bn †	£1,809.15bn †	£1,851.07bn †	£1,903.05bn †
Household net income (HBAI definition)	£1,462.17bn	£1,509.90bn	£1,543.94bn	£1,577.28bn	£1,611.67bn	£1,651.05bn	£1,701.84bn

Population: head levels

Measure (head)	2025-26	2026-27	2027-28	2028-29	2029-30	2030-31	2031-32
People	69,514k	69,778k	70,036k	70,316k	70,626k	70,944k	71,249k
Benefit units	35,247k	35,381k	35,512k	35,654k	35,811k	35,972k	36,127k
Households	31,167k	31,285k	31,401k	31,526k	31,665k	31,808k	31,944k

Poverty rates: head levels

Measure (head)	2025-26	2026-27	2027-28	2028-29	2029-30	2030-31	2031-32
Absolute poverty, before housing costs: everyone	16.1%	15.2%	15.5%	15.7%	15.7%	15.8%	15.8%
Absolute poverty, before housing costs: children	24.2%	21.4%	21.6%	21.6%	21.7%	22.0%	21.8%
Absolute poverty, before housing costs: working-age adults	13.9%	13.5%	14.0%	14.2%	14.2%	14.3%	14.3%
Absolute poverty, before housing costs: pensioners	13.7%	13.2%	13.2%	13.4%	13.5%	13.5%	13.5%
Absolute poverty, after housing costs: everyone	21.6%	20.9%	21.4%	21.6%	21.9%	22.1%	22.3%
Absolute poverty, after housing costs: children	33.4%	30.9%	31.1%	31.3%	31.5%	32.0%	32.3%
Absolute poverty, after housing costs: working-age adults	19.9%	19.7%	20.3%	20.5%	20.8%	21.0%	21.1%
Absolute poverty, after housing costs: pensioners	12.8%	12.6%	12.6%	12.9%	13.1%	13.4%	13.4%
Relative poverty, before housing costs: everyone	17.2%	16.5%	16.5%	16.6%	16.4%	16.4%	16.4%
Relative poverty, before housing costs: children	26.4%	23.7%	23.4%	23.4%	22.9%	23.0%	22.9%
Relative poverty, before housing costs: working-age adults	14.7%	14.4%	14.7%	14.8%	14.7%	14.8%	14.8%
Relative poverty, before housing costs: pensioners	14.8%	14.8%	14.1%	14.2%	14.0%	14.0%	14.1%
Relative poverty, after housing costs: everyone	21.7%	21.1%	21.3%	21.3%	21.4%	21.4%	21.7%
Relative poverty, after housing costs: children	33.5%	31.3%	31.0%	30.8%	31.0%	31.0%	31.5%
Relative poverty, after housing costs: working-age adults	19.9%	19.8%	20.2%	20.3%	20.5%	20.5%	20.7%
Relative poverty, after housing costs: pensioners	13.0%	12.7%	12.6%	12.2%	12.1%	12.2%	12.5%

People in poverty: head levels

Measure (head)	2025-26	2026-27	2027-28	2028-29	2029-30	2030-31	2031-32
Absolute poverty, before housing costs: everyone	11,163k	10,583k	10,866k	11,011k	11,088k	11,228k	11,233k
Absolute poverty, before housing costs: children	3,629k	3,221k	3,263k	3,284k	3,310k	3,369k	3,350k
Absolute poverty, before housing costs: working-age adults	5,902k	5,806k	6,087k	6,198k	6,235k	6,305k	6,321k
Absolute poverty, before housing costs: pensioners	1,632k	1,556k	1,515k	1,529k	1,543k	1,555k	1,562k
Absolute poverty, after housing costs: everyone	15,000k	14,571k	14,968k	15,173k	15,433k	15,708k	15,854k
Absolute poverty, after housing costs: children	5,004k	4,656k	4,703k	4,745k	4,808k	4,897k	4,966k
Absolute poverty, after housing costs: working-age adults	8,476k	8,431k	8,814k	8,960k	9,130k	9,273k	9,341k
Absolute poverty, after housing costs: pensioners	1,520k	1,484k	1,451k	1,468k	1,496k	1,538k	1,547k
Relative poverty, before housing costs: everyone	11,974k	11,507k	11,542k	11,648k	11,548k	11,670k	11,705k
Relative poverty, before housing costs: children	3,963k	3,570k	3,543k	3,553k	3,489k	3,519k	3,518k
Relative poverty, before housing costs: working-age adults	6,246k	6,184k	6,378k	6,475k	6,459k	6,538k	6,554k
Relative poverty, before housing costs: pensioners	1,765k	1,753k	1,621k	1,620k	1,600k	1,613k	1,633k
Relative poverty, after housing costs: everyone	15,067k	14,732k	14,895k	14,945k	15,110k	15,214k	15,475k
Relative poverty, after housing costs: children	5,019k	4,715k	4,686k	4,669k	4,725k	4,753k	4,839k
Relative poverty, after housing costs: working-age adults	8,497k	8,516k	8,764k	8,884k	8,994k	9,060k	9,195k
Relative poverty, after housing costs: pensioners	1,551k	1,502k	1,445k	1,392k	1,391k	1,401k	1,441k

Inequality: head levels

Measure (head)	2025-26	2026-27	2027-28	2028-29	2029-30	2030-31	2031-32
Gini coefficient, equivalised HBAI income before housing costs	0.3088	0.3061	0.3068	0.3074	0.3078	0.3084	0.3095

Mean household net income in each side's own deciles: head levels

Measure (head)	2025-26	2026-27	2027-28	2028-29	2029-30	2030-31	2031-32
Decile 1: mean household_net_income per household	£17,831 †	£18,013 †	£18,029 †	£18,074 †	£18,426 †	£18,615 †	£18,791 †
Decile 2: mean household_net_income per household	£28,086 †	£29,021 †	£28,786 †	£29,225 †	£29,487 †	£29,938 †	£30,567 †
Decile 3: mean household_net_income per household	£34,360 †	£35,677 †	£36,192 †	£36,712 †	£37,002 †	£37,645 †	£38,257 †
Decile 4: mean household_net_income per household	£38,776 †	£40,951 †	£42,048 †	£42,647 †	£43,424 †	£44,189 †	£44,704 †
Decile 5: mean household_net_income per household	£43,903 †	£44,793 †	£45,853 †	£46,641 †	£47,851 †	£48,654 †	£49,864 †
Decile 6: mean household_net_income per household	£48,437 †	£49,771 †	£50,826 †	£51,620 †	£51,898 †	£53,358 †	£54,671 †
Decile 7: mean household_net_income per household	£56,348 †	£57,572 †	£58,387 †	£59,124 †	£60,150 †	£60,949 †	£62,349 †
Decile 8: mean household_net_income per household	£69,278 †	£70,760 †	£72,238 †	£73,340 †	£74,864 †	£76,012 †	£78,279 †
Decile 9: mean household_net_income per household	£79,810 †	£82,188 †	£83,309 †	£84,758 †	£86,322 †	£87,890 †	£90,928 †
Decile 10: mean household_net_income per household	£117,846 †	£120,681 †	£122,632 †	£124,776 †	£126,997 †	£129,355 †	£132,252 †

Standard reform costings (change in gov_balance): head levels

Measure (head)	2025-26	2026-27	2027-28	2028-29	2029-30	2030-31	2031-32
Raise basic rate by 1pp	£6.22bn	£6.50bn	£6.70bn	£6.90bn	£7.11bn	£7.34bn	£7.62bn
Raise higher rate by 1pp	£3.54bn	£3.82bn	£4.05bn	£4.27bn	£4.49bn	£4.76bn	£4.96bn
Raise personal allowance by ~800GBP/year	£-3.83bn	£-3.96bn	£-4.03bn	£-4.10bn	£-4.19bn	£-4.30bn	£-2.02bn
Raise child benefit by 25GBP/week per additional child	£-2.00bn	£-1.76bn	£-1.58bn	£-1.48bn	£-1.38bn	£-1.28bn	£-1.17bn
Reduce Universal Credit taper rate to 20%	£-20.49bn	£-21.05bn	£-21.50bn	£-21.94bn	£-22.03bn	£-22.40bn	£-22.87bn
Raise Class 1 main employee NICs rate to 10%	£11.07bn	£11.51bn	£11.84bn	£12.14bn	£12.49bn	£12.83bn	£13.23bn
Raise VAT standard rate by 2pp	£25.01bn	£25.68bn	£26.29bn	£26.92bn	£27.58bn	£28.26bn	£28.95bn
Raise additional rate by 3pp	£2.83bn	£3.07bn	£3.27bn	£3.47bn	£3.67bn	suppressed	suppressed
Raise the Universal Credit standard allowance by 10%	£-3.03bn	£-3.16bn	£-3.28bn	£-3.35bn	£-3.39bn	£-3.44bn	£-3.51bn
Raise the State Pension by 10%	£-7.81bn	£-8.07bn	£-7.99bn	£-8.11bn	£-8.36bn	£-8.66bn	£-9.02bn

Standard reforms: change in each reform's target: head levels

Measure (head)	2025-26	2026-27	2027-28	2028-29	2029-30	2030-31	2031-32
Raise basic rate by 1pp: change in income_tax	£6.36bn	£6.65bn	£6.86bn	£7.07bn	£7.28bn	£7.52bn	£7.80bn
Raise higher rate by 1pp: change in income_tax	£3.55bn	£3.83bn	£4.06bn	£4.28bn	£4.50bn	£4.77bn	£4.97bn
Raise personal allowance by ~800GBP/year: change in income_tax	£-3.96bn	£-4.10bn	£-4.19bn	£-4.26bn	£-4.36bn	£-4.47bn	£-1.77bn
Raise child benefit by 25GBP/week per additional child: change in child_benefit	£2.34bn	£2.15bn	£1.96bn	£1.85bn	£1.74bn	£1.63bn	£1.51bn
Reduce Universal Credit taper rate to 20%: change in universal_credit	£20.48bn	£21.04bn	£21.49bn	£21.93bn	£22.02bn	£22.40bn	£22.86bn
Raise Class 1 main employee NICs rate to 10%: change in national_insurance	£11.33bn	£11.79bn	£12.13bn	£12.44bn	£12.78bn	£13.13bn	£13.62bn
Raise VAT standard rate by 2pp: change in vat	£25.01bn	£25.68bn	£26.29bn	£26.92bn	£27.58bn	£28.26bn	£28.95bn
Raise additional rate by 3pp: change in income_tax	£2.83bn	£3.07bn	£3.27bn	£3.47bn	£3.67bn	suppressed	suppressed
Raise the Universal Credit standard allowance by 10%: change in universal_credit	£3.03bn	£3.16bn	£3.28bn	£3.36bn	£3.41bn	£3.47bn	£3.52bn
Raise the State Pension by 10%: change in state_pension	£10.72bn	£11.23bn	£11.37bn	£11.62bn	£12.08bn	£12.54bn	£13.07bn

[MaxGhenis]

UK hub (Claude session, for Max): merged main again at bdd54c545. #2368 and #2573 have both merged. #2573 added spousal maintenance (less the £15 disregard where there's a child; HB Regs 2006 reg 40(1), SPC Regs reg 29(1)(o)) and Widowed Parent's Allowance (less £15; Sch 5 para 16(b)) to the formula this PR moved into hb_income_before_deductions. Both are now in the helper, alongside this PR's claimant-or-partner mask, the Child Benefit and Social Fund disregards and statutory pay as earnings. Both variables are already limited to the claimant and partner. #2573's HB cases set Child Benefit to zero and pay only the claimant, so none of their expectations move. Against main, the PR is now only its own three files. The hub gets a delta review, then lands it.