Free tools
Free UK checkers & calculators
Instant answers, no sign-up. Each tool tells you whether it is worth going further.
Free · No sign-up
Free UK Tax Code Checker
Enter your tax code and we tell you what it means, whether it looks wrong, and if you may be owed a refund — instantly, free, no email required.
Free · No sign-up
Take-Home Pay Calculator (2026/27)
Enter your salary and see your real take-home pay after income tax and National Insurance — yearly, monthly and weekly. Free, instant, no sign-up.
Free · No sign-up
Emergency Tax Refund Calculator
On an emergency tax code? Estimate how much you have overpaid and could claim back — enter your salary, code and how long you have been on it.
Free · No sign-up
Holiday Entitlement Calculator
How much paid holiday are you legally entitled to? Enter the days you work per week and get your statutory minimum instantly.