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NHS · Agenda for Change · FY 2026/27 Calc-engine routed

NHS Band 4 top step.

Penny-accurate take-home for an NHS Band 4 on the top step — basic pay of £31,157, the cliff-edge Tier 3 · 8.3% NHS pension as a Net Pay Arrangement, and Inner / Outer London HCAS side by side.

Engine note · `computeNhsBreakdown()` — HCAS floor/cap clamp, cliff-edge pension on the whole gross, NI on full gross, PAYE on the post-pension base. Integer pence, no float drift.

Basic (national)
£31,157
Net monthly
£1,990
Effective rate
23.3%

National

No HCAS supplement

Monthly take-home

£1,990

Annual take-home
£23,884
Pensionable gross
£31,157
HCAS supplement

Outer London

15% HCAS · floor / cap clamped

Monthly take-home

£2,220

Annual take-home
£26,635
Pensionable gross
£36,027
HCAS supplement
+£4,870

Inner London

20% HCAS · floor / cap clamped

Monthly take-home

£2,292

Annual take-home
£27,508
Pensionable gross
£37,388
HCAS supplement
+£6,231

Deduction stack · NHS Band 4 Top

Standard tax code 1257L, no student loan. NHS pension is a Net Pay Arrangement (deducted before PAYE); NI is charged on the full pensionable gross. Layer pension tiers, HCAS and student loans live in the NHS calculator.

Line item NationalOuter LondonInner London
Pensionable gross £31,157 £36,027 £37,388
HCAS supplement £0 £4,870 £6,231
NHS pension £2,586 £3,531 £3,664
Income tax (PAYE) £3,200 £3,985 £4,231
National Insurance £1,487 £1,877 £1,985
Annual take-home £23,884 £26,635 £27,508
Monthly take-home £1,990 £2,220 £2,292

Reference · 2026/27 FROZEN

The Tier 3 · 8.3% NHS pension and HMRC thresholds driving the national column above.

  • Basic salary £31,157
  • NHS pension tier Tier 3 · 8.3%
  • Pension contribution £2,586
  • Inner London HCAS £6,231
  • Outer London HCAS £4,870
  • Personal Allowance £12,570