Overtime Pay Calculator

Our overtime pay calculator shows exactly how much extra overtime you keep after income tax and NI. If your total income crosses £50,270, overtime above this is taxed at 40%.

Enter your basic weekly pay and the overtime amount or rate. Overtime is taxed as income in the pay period received — it is added to your regular pay and PAYE applies to the combined figure. Workers earning near a band boundary may find overtime taxed at 40% even if their regular salary is at 20%, because the monthly combined figure pushes them into the higher band temporarily. Your annual position is still corrected by cumulative PAYE, so you do not overpay overall if you have consistent overtime — but the monthly payslip can show a surprisingly high deduction. The calculator shows take-home on a regular week versus an overtime week, and the net value of each extra hour worked after tax and NI.