All tools4 tools
Calculators that show their working.
Every rate on this site is read from a dated file rather than written into a page. Each one records the gov.uk page it came from, the dates it applies between, and when a person last checked it. The calculators say which figures they used and where those figures came from.
Pay and employment
Take-home payWhat is left of a salary after tax, National Insurance, pension and student loan.
2026-27
Student loan repaymentsWhat you repay each month, and what every plan would cost on the same salary.
2026-27
Family
Child benefit chargeWhat the high income charge takes, and the pension that clears it.
2026-27
Construction
CIS deductionsDeduction on a construction invoice, split from materials.
2026-27
In progress
Section 24 property relief
Salary sacrifice comparison
Estimates, not advice. Check anything that matters with HMRC or an accountant.