GikiCalc

Rates, sources and review dates

Every figure used by these calculators is listed below with a link to the government page it came from and the date it was last checked. The list is generated from the same data the calculators run on, so it cannot drift out of step with the numbers on the tool pages. UK tax rates change at least once a year, usually from 6 April, and sometimes mid-year at a Budget — if you are reading this well after the review date shown, check the source links before relying on a figure.

2026/27 UK tax year (6 April 2026 to 5 April 2027).

Last checked against the sources below on 31 August 2026.

Every figure, one by one

47
figures behind these calculators
0
confirmed by a person
46
corroborated automatically
31 August 2026
last reviewed
  1. 1

    First-party source only

    Every figure comes from gov.uk or legislation.gov.uk. Accountancy blogs and summaries are used to know where to look, never as the source.

  2. 2

    Recorded with its wording

    The number is stored together with the sentence it came from, so it can be re-checked in seconds rather than re-researched.

  3. 3

    Re-read automatically

    A separate pass re-reads the government pages and flags any figure whose wording has stopped matching.

  4. 4

    Then a person checks the column

    A machine cannot tell one year’s column from another — gov.uk shows four years side by side. Advertising stays switched off until every figure has passed this step.

Just used one of the calculators? Filter down to the figures that produced your answer.

0 checked by a person46 corroborated automatically1 not yet corroborated

Income tax rates and allowances current and past

gov.uk · 4 figures
  • Personal Allowance

    The slice of income you can earn before Income Tax starts.

    Stored as12570
    “Allowances 2026 to 2027 2025 to 2026 2024 to 2025 2023 to 2024 Personal Allowance £12,570”
    gov.uk/government/publications/rates-and-allowances-income-tax/income-tax-rates-and-allowances-current-and-past

    How we know it is this year’s figure

    Personal Allowances — column header "2026 to 2027": £12,570

    Corroborated automatically

    An automated re-read of the government page found both this figure and the quoted wording. That proves the number is on the page — not yet that it sits in this year’s column.

    Last checked
    27 August 2026

Rates and thresholds for employers 2026 to 2027

gov.uk · 3 figures

Claim employment allowance

gov.uk · 1 figure

Pay apprenticeship levy

gov.uk · 2 figures

What you pay

gov.uk · 5 figures

Tax on dividends

gov.uk · 1 figure

Rates

gov.uk · 1 figure

Residential property rates

gov.uk · 4 figures

Stamp duty land tax buying an additional residential property

gov.uk · 1 figure

Rates of stamp duty land tax for non uk residents

gov.uk · 1 figure

Corporation tax rates

gov.uk · 4 figures

19

legislation.gov.uk · 1 figure

Tax free allowances on property and trading income

gov.uk · 1 figure

Pension schemes rates

gov.uk · 4 figures

Pension schemes work out your tapered annual allowance

gov.uk · 2 figures

Rates and allowances national insurance contributions

gov.uk · 1 figure

Self employed national insurance rates

gov.uk · 5 figures

Vat rates

gov.uk · 3 figures

Register for vat

gov.uk · 1 figure

Payments on account

gov.uk · 1 figure

National minimum wage rates

gov.uk · 1 figure

What is not covered

These calculators cover England, Wales and Northern Ireland. Scotland sets its own Income Tax bands, and Scotland and Wales each charge their own property transaction tax instead of Stamp Duty. Also outside scope: Business Asset Disposal Relief, the starting rate for savings, Marriage Allowance, the VAT flat rate scheme, and any calculation involving associated companies or an accounting period shorter than twelve months.

General information about UK tax, not advice. Figures are indicative and your circumstances may change the answer. Check anything important with HMRC or a qualified adviser before acting on it.