Instantly calculate Capital Gains Tax, Stamp Duty, Income Tax and National Insurance using current HMRC rates. Built and maintained by qualified UK accountants in Luton.
Work out Capital Gains Tax when selling a second home, buy-to-let or investment property. Includes 2026/27 rates (18% / 24%) and the £3,000 annual exemption.
Calculate CGT on propertyCalculate Capital Gains Tax on shares, crypto, funds and other chargeable assets at current 2026/27 HMRC rates.
Calculate CGT on assetsSee your take-home pay after Income Tax and personal allowance for the 2026/27 UK tax year.
Calculate income taxCalculate Class 1, 2 and 4 National Insurance contributions based on your employment or self-employed income.
Calculate NI contributionsWork out Stamp Duty Land Tax on residential property purchases — including first-time buyer relief and the 5% additional-property surcharge.
Calculate SDLTCalculate 0.5% Stamp Duty on share purchases, with exemptions for gifts, trust transfers, divorce and company winding-up.
Calculate share stamp dutyDifferent transactions trigger different tax liabilities. Here's a quick guide to choosing the right calculator.
You'll likely owe Capital Gains Tax (CGT). Use the property calculator for second homes and buy-to-lets — residential property gains are taxed at 18% (basic-rate band) or 24% (higher-rate). For shares, crypto, funds and business assets, use the other-assets calculator.
You'll pay Stamp Duty Land Tax (SDLT) in England and Northern Ireland. The current nil-rate band sits at £125,000, with first-time buyer relief applying up to £300,000.
Stamp Duty on shares is charged at 0.5% of the consideration when buying shares in a UK company using a stock transfer form. Several exemptions apply — including gifts, transfers on divorce, and company winding-up.
Use the Income Tax and National Insurance calculators together to see your full deductions and take-home figure for 2026/27.
Book a free 15-minute call with a qualified UK accountant. No obligation, no sales pitch.
Book Free ConsultationQuick answers about our UK tax calculators and how to use them.
Yes. All calculators on this page are completely free, require no sign-up, and use the current HMRC rates for the 2026/27 tax year.
Yes. Our calculators are reviewed by qualified UK accountants and updated after every Budget and Autumn Statement to reflect current HMRC thresholds, allowances and rates.
Our calculators provide an accurate estimate based on the inputs you provide. For complex situations involving multiple income sources, reliefs or allowances we recommend a short consultation with one of our accountants before filing.
No. All calculations run in your browser. We do not record, transmit or store any of the amounts you enter.
Tax situations involving multiple reliefs (Private Residence Relief, Business Asset Disposal Relief, EIS/SEIS), non-UK residency or multiple income streams can be complex. Contact Fiscal Umbrella for a tailored calculation.
