Overtime Calculator UK
UK overtime is set by contract; estimate with a sample 40-hour threshold.
A contract-based estimate that stays on your screen.Estimates use standard overtime math. Not legal or payroll advice — confirm rates and rules with your employer or labor authority.
How overtime is calculated
Overtime is paid on the hours above your threshold at the overtime multiplier. Enter your hourly rate, the total hours you worked, the regular (non-overtime) hours, the threshold, and the multiplier; the calculator shows regular pay, overtime pay, and gross pay. Commissions and allowances are folded into the regular rate first, so the overtime line uses the fuller rate.
State & country rules
The UK has no statutory 1.5x rate; overtime is set by your employment contract and cannot fall below the National Minimum Wage. Sample threshold 40h.
Overtime in the UK is contractual
The UK has no statutory overtime rate. There is no law that says you must be paid 1.5x; overtime is whatever your employment contract states, and it can never take your total pay below the National Minimum Wage. Some UK contracts pay a flat enhanced rate such as 1.25x, others a fixed premium, and some offer no overtime pay at all.
Worked example. If your contract pays 1.5x and you work 45 hours at £15/h: 45 × £15 = £675 at the overtime rate, or set the threshold to 40 and read the split between your 40 contracted hours and the 5 overtime hours. Adjust the multiplier to match your own contract.
Because the rate is set by contract rather than law, treat the result as an estimate and check it against your payslip or HR. If your contract is silent on overtime, you may have no automatic right to extra pay for the extra hours you work.
Check your contract's overtime clause. Some UK contracts cap overtime, pay a fixed sum, or require pre-approval. The calculator shows the math at the rate you enter; it cannot know whether your employer approved the extra hours.
The minimum wage floor. Even when a contract promises overtime, your total pay for the hours worked cannot drop below the National Minimum Wage. If a low base rate plus a small premium would fall under that floor, the law lifts your pay to the minimum. Use the calculator to check, then compare the result with your actual hourly take-home.
FAQ
Is there a legal 1.5x in the UK?
No. The UK has no statutory overtime rate; it is whatever your contract says, and it cannot take you below the National Minimum Wage.
What if my contract says nothing about overtime?
Then you may have no automatic right to extra pay. Check your contract and speak to your employer or ACAS.
Why can I change the multiplier?
Because UK overtime is contractual, we let you set the rate your contract uses — some pay 1.25x or a flat premium.