Free UK Tax Calculators
Income Tax, National Insurance, Stamp Duty, Capital Gains and more — calculated using current 2026/27 HMRC rates.
UK-specific calculators that work through the actual band stacking, taper rules and surcharges — not the generic global versions you'll find elsewhere.
UK Tax Calculators
Five calculators covering the most common UK tax scenarios. All reads from the same HMRC + Revenue Scotland rate config — updated quarterly.
UK Salary Take-Home Calculator
PAYE Income Tax, National Insurance, pension and student loan deducted from your gross salary — annual, monthly and weekly.
Updated April 2026OpenSelf-Employed Tax Calculator
Income Tax + Class 4 NI on self-employment profit, with the full payment-on-account schedule.
Updated April 2026OpenUK Stamp Duty Calculator
SDLT (England/NI), LBTT (Scotland) and LTT (Wales) compared side-by-side, with first-time buyer relief and surcharges.
Updated April 2026OpenLimited Company vs Sole Trader
Side-by-side after-tax comparison covering Corporation Tax marginal relief and dividend stacking. Reveals why the limited-company tax advantage has effectively closed in 2026/27.
Updated April 2026OpenCapital Gains Tax Calculator
Property, shares and BADR business sales with current 18%/24% main rates and £3,000 annual allowance.
Updated April 2026OpenUK VAT Calculator
Add VAT to a net price or extract VAT from a gross figure — standard 20%, reduced 5%, or any custom rate.
Updated April 2026OpenUK Mortgage Repayment Calculator
Monthly payments, total interest over the term, and overpayment savings — repayment or interest-only.
Updated April 2026OpenUK Pension Calculator
Project your retirement pot, annual income from the 4% rule, State Pension, and any shortfall against PLSA Retirement Living Standards.
Updated April 2026OpenUK Universal Credit Calculator
Estimate monthly UC using April 2026 rates — the abolished two-child limit, LCWRA changes, work allowance and 55p taper. Estimator only; not an official assessment.
Updated April 2026Open
Other Calculators
Date arithmetic, age calculations, countdowns and a UK working-days helper — practical utilities that complement the tax calculators above.
Date Calculators
Age Calculators
Countdowns
UK Specific
Built on official rates, kept current
Updated quarterly using HMRC and gov.uk official rates
All calculations verifiable against published tax bands
Last reviewed April 2026 — sources: HMRC, Revenue Scotland, WRA