Free UK Tax Calculators for 2026/27
Eight calculators built by the IAK team and updated every April with the new rates and thresholds. No sign-up, no email gate, and the working is shown so you can check the answer.
VAT Calculator
Add VAT to a net price or take VAT off a gross price at 20%, 5% or a custom rate, with the working shown.
Salary Calculator
Work out take-home pay after income tax, National Insurance, student loan and pension contributions for 2026/27.
Dividend Tax Calculator
Calculate the tax on dividends from your limited company using the 2026/27 rates, the £500 allowance and your other income.
Corporation Tax Calculator
Estimate corporation tax at 19% to 25%, including marginal relief and the adjustment for associated companies.
Stamp Duty Calculator
Calculate Stamp Duty Land Tax for first-time buyers, home movers, additional properties and non-residential purchases.
Capital Gains Tax Calculator
Work out capital gains tax on the sale of property, shares or a business at the 2026/27 rates, including the annual exempt amount and reliefs.
Inheritance Tax Calculator
Estimate inheritance tax on an estate using the nil-rate band, residence nil-rate band and transferable allowances.
What Week Are We In?
See today's UK tax week (counted from 6 April) and ISO calendar week, with a full tax week calendar for payroll.
How these calculators are kept accurate
Every calculator uses the rates and thresholds for the 2026/27 tax year, which runs from 6 April 2026 to 5 April 2027. That includes the £12,570 personal allowance, 8% employee National Insurance, the 10.75%, 35.75% and 39.35% dividend rates, the 18% and 24% capital gains rates, corporation tax at 19% to 25% with marginal relief, and the £90,000 VAT registration threshold. We refresh the figures each April after the Budget and the HMRC rate tables are published.
The results are estimates for guidance. They do not account for every allowance, relief or personal circumstance, and they are not a substitute for advice on your own position. If a result surprises you, or the number is large enough to matter, that is usually the moment to talk to an accountant.
Want the background first? Our insights library explains the rules behind each calculator, from what VAT is and how dividends are taxed to the UK tax year dates.
Need more than a calculator?
Our accountants can model salary and dividend mixes, incorporation, property sales and estate planning against your actual figures, then file the returns.
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