Overtime pay calculator (UK)
Work out what an overtime stint is worth - at time and a half, double time or any rate your contract sets - and what the same hours look like as TOIL instead.
Your overtime
Gross figures before tax and National Insurance. There is no statutory overtime rate in the UK - your contract sets the multiplier. TOIL shown hour-for-hour; some employers enhance it.
Overtime pay = overtime hours × your hourly rate × the multiplier in your contract. There is no legal overtime rate in the UK - "time and a half" is convention, not law. The only legal floor is that your average pay across all hours worked must not fall below the National Minimum Wage, and your average week must stay inside the 48-hour cap unless you've opted out.
How is overtime pay calculated in the UK?
Multiply the extra hours by your normal hourly rate, then by whatever uplift your contract promises. Six hours at £15/hour and time and a half is 6 × £15 × 1.5 = £135.00 - against £90 at flat rate. The calculator above does the arithmetic and shows the effective hourly rate alongside.
If your contract is silent on a rate, overtime is normally paid at your flat rate - and for many salaried roles it isn't paid at all (see below).
Is time and a half a legal requirement?
No. UK law sets no overtime premium - not for evenings, weekends or bank holidays. The rate is whatever the employment contract or policy says. The two rules that always apply come from elsewhere:
- National Minimum Wage floor - total pay ÷ total hours in a pay period must not dip below the NMW for your age band (current rates on gov.uk).
- The 48-hour cap - average weekly hours over 17 weeks must stay under 48 unless you've signed an opt-out (Working Time Regulations).
Should I take the money or TOIL?
Many employers offer time off in lieu instead of paying overtime. Hour-for-hour TOIL is cash-neutral for the employer and gives you time back; paid overtime at an enhanced rate puts more money in your pocket but costs more. The trade-offs are covered properly in our TOIL vs overtime pay guide, and if your employer offers TOIL it should be written down - our TOIL policy template shows what good looks like.
Does overtime count towards holiday pay?
Often, yes. Overtime that is compulsory, or voluntary but regular enough to be part of your normal pay, must be included in holiday pay for the 4 weeks of EU-derived statutory leave, averaged over a 52-paid-week reference period. If you regularly work paid overtime and your holiday pay never moves, that's worth a conversation.
Do salaried staff get overtime pay?
Only if the contract says so. Extra unpaid hours are lawful for salaried staff as long as average pay stays at or above the NMW once those hours are counted. If late nights are routine, TOIL is the usual fix - see can my employer refuse TOIL?
This calculator applies the statutory rules as published and shows its working, but it cannot know your contracts, your policies or anything unusual about the case. Treat the figure as a starting point, and take advice on anything contested or expensive.
Stop calculating overtime by hand
In CoDash, people submit overtime in seconds, managers approve it with one click, and it lands as TOIL days or a payroll line automatically - at the rates you set, weekend multipliers included.