Know exactly what you owe HMRC.
Free self-assessment tax calculator for 2025/26 and 2026/27.
No signup. No jargon. Accurate to the penny.
100% Free Calculation
Full tax calculation with band breakdown. No signup needed. Only pay if you want the PDF report.
HMRC 2025/26 Rates
All tax bands, NI thresholds, and allowances verified against current HMRC published rates.
Your Data Stays Private
All calculations run in your browser. No data sent to any server until you choose to pay.
Built for people who hate tax forms.
Whether you're freelancing, renting out property, or driving for Uber.
Freelancers
Claim every expense you're entitled to. Know exactly how much to save each month.
Landlords
Calculate rental profit correctly after mortgage interest, repairs, and insurance.
Side Hustlers
Uber, Etsy, Deliveroo — find out if you need to file and what you can claim.
Ready to find out what you owe?
Takes under 15 minutes. No signup. No credit card. Just answers.
Free to use · Pay only for the PDF report (£12.99)
Free UK Tax Calculator
2025/26
Calculate your self-assessment tax bill in under 5 minutes. Accurate to the penny. HMRC-verified rates.
Everything you need. Nothing you don't.
A complete self-assessment breakdown — income tax, national insurance, expenses, and your exact take-home pay.
Income Tax
All bands for England, Wales, NI, and Scotland
National Insurance
Class 2 and Class 4 for self-employed
Expenses
All 16 SA103 allowable expense categories
Mileage & Home Office
HMRC flat-rate and actual cost methods
Rental Income
Property income with mortgage interest relief
Dividends & Savings
With tax-free allowances applied
Payments on Account
Automatic if your bill exceeds £1,000
PDF Report
11-page HMRC-style document with box refs
How much tax will I pay?
Your 2025/26 tax bill depends on total income, allowable expenses, and your personal allowance of £12,570.
Basic Rate
20%
£12,571 – £50,270
Higher Rate
40%
£50,271 – £125,140
Additional Rate
45%
Over £125,140
Self-employed individuals also pay Class 2 NI (£3.45/week) and Class 4 NI (6% on £12,571–£50,270, 2% above). All rates from HMRC for 2025/26.
Explore our calculators.
Purpose-built for every type of UK taxpayer.
Self-Employed
Sole Trader Calculator
Tax, NI, Class 2 & 4, and allowable expenses for sole traders.
Calculate now ›Landlord
Rental Tax Calculator
Rental profit, mortgage interest relief, and property expenses.
Calculate now ›Freelancer
Freelancer Calculator
Income tax, NI, and allowable deductions for contractors.
Calculate now ›