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— Quick reference · provenance

Sources verified for 2020/21

Configuration 2020-21-v1.14; only its annual allowance and taper figures, and its Child Benefit weekly rates, are verified against official sources; its other figures are best-effort historical values, not yet confirmed against an official table, verification dated 2026-07-25. The figures are unchanged since configuration 2020-21-v1.12; later versions changed only the source notes. This page reproduces the configuration’s own verification record — the sources each figure was checked against and any qualifier the rates tables cannot hold — without the engineering change notes kept beside it. It restates no figure; the figures are on the 2020/21 rates page and in the machine-readable dataset.

Verified against

This is the configuration’s dated verification record. The figures on the year page are current.

HMRC Income Tax rates 2020-21 (gov.uk): PA £12,500, basic-rate band £37,500 (HRT £50,000), additional-rate threshold £150,000, rates 20/40/45; PSA £1,000/£500/£0; starting-rate band £5,000 @ 0%; dividend rates 7.5/32.5/38.1 + £2,000 allowance; trust 45% / dividend-trust 38.1%; CGT AEA £12,300, rates 10/20 (non-property); ISA £20,000. AA fields (PTM057100, FA 2020 effective 2020-21 — the year the taper threshold rose to £200k/£240k and the floor dropped to £4k): standard AA £40,000, taper threshold income £200,000, taper adjusted income £240,000, taper floor £4,000, taper £1/£2; MPAA £4,000 (PTM056510, since 2017-18); AA charge marginal-rate default 45%. priorSeptemberCPI = 1.7% (Sept 2019, ONS D7G7) for DB-PIA opening revaluation (FA 2004 s.235(3) / PTM053301). LSA/LSDBA = 0 (LTA regime in force 2020-21). HICBC £50,000 threshold / 1% per £100; Child Benefit £21.05 eldest + £13.95 additional weekly (Child Benefit (Rates) Regulations 2006 reg 2 as amended by SI 2020/298 reg 5; confirmed against the legislation, 12 October 2026). Non-AA fields are best-effort for the rare historical single-year calc; the load-bearing use is prior-year carry-forward taper, which reads only the AA/taper fields. trust standard rate band GBP1,000 first slice at non-trust rates, GBP200 floor per settlement (ITA 2007 ss.491-492, in force through 2023-24); Scottish income tax bands: gov.scot Scottish Income Tax 2020-2021: rates and bands

For planning and illustration purposes only. Verify all inputs against source documents. This reference does not constitute financial or tax advice.