Updated for the 2025–26 tax year

Figure out what
HMRC actually takes

Proper calculators for UK taxes — no jargon, no upsells, no email walls.

Calculate my take-home →
£35,000
Take-home£28,744
Income Tax£4,486
Nat. Insurance£1,770
The Tools

Pick a calculator

Each one covers the full picture — not just the headline rate.

Stamp Duty (SDLT) Calculator
Live
Find out what HMRC charges before your solicitor tells you on completion day. First-time buyers, second homes, and all three UK nations covered.
ISA Calculator
Coming Soon
Project how your Cash ISA or Stocks & Shares ISA grows over time within the annual £20,000 allowance.
UK Mortgage Calculator
Coming Soon
Work out what you'd actually pay each month — not the headline rate on a mortgage advert.
£
Self Assessment Calculator
Coming Soon
Dreading the January deadline? Run the numbers now and stop guessing what you owe.

Why we made this

GOV.UK is confusing. Most "free" calculators want your email address. We just wanted a thing that worked.

Uses the real numbers
Band by band, year by year — actual HMRC rates, not estimates rounded to the nearest five percent.
Runs entirely in your browser
Everything calculates locally. Nothing is sent anywhere, nothing is stored, no spinner required.
Nothing to sign up for
No account, no email, no cookie consent wall beyond the basics. Type a number, get an answer.
Free, full stop
No paywalled results, no premium tier, no "basic version" nonsense. The full calculation, every time.