How it works
How Overtime Pay Calculator solves the problem
Use this Overtime Pay Calculator when you need a overtime calculator UK you can trust — clean inputs, transparent steps, zero fluff.
The people who ship Overtime Pay Calculator are the same ones who had to look up a overtime calculator UK on deadline and hated the result. This is the version they wanted to find.
HR systems quote gross, your bank shows net — the difference can swing hundreds a month. Pull up the contract PDF if you still have it — then work it out and the rest of this page explains what the answer means.
There's no UK statutory right to higher overtime rates — it's contractual. Common multipliers are time-and-a-half (×1.5) on weekends and double-time (×2) on bank holidays. National Minimum Wage must still be met on total hours.
On this page you will see UK Employment & Tax, GOV.UK and ACAS treated as first-class terms — each one is linked to the calculators and references that use it, so you can follow the thread without retyping queries into a search bar.
If it helps, jump straight to the Employment hub or compare with the UK Take-Home Salary Calculator (PAYE) and the Holiday Pay Calculator — those two calcs are the ones readers usually open right after this page.
Seeing it on real numbers
A working example keeps the formula honest:
A retail worker on £11.44/hour (2024 NLW) works 8 hours on a Sunday at time-and-a-half: 8 × £11.44 × 1.5 = £137.28 before tax. On a bank holiday at double-time: 8 × £11.44 × 2 = £183.04.
A hospital doctor on £24/hour rostered for a Saturday long-day of 12.5 hours with the standard 1.33× NHS multiplier: 12.5 × 24 × 1.33 = £399. NHS enhancements stack on top of base for unsocial hours.
Moments this tool earns its keep
Overtime Pay Calculator is aimed at people arriving with questions like these:
- "What is time and a half"
- "Overtime rate UK"
- "Overtime tax"
- "What is overtime calculator uk"
- "How to calculate overtime calculator uk"
- "Overtime calculator uk formula"
Where the number stops being useful
Every tool has an edge where it stops being the right answer. Overtime Pay Calculator is no exception:
- For legally binding tax or medical decisions — cross-check with HMRC, NHS or a qualified professional.
- For very large or very small extremes the rounding error outgrows the useful precision.
- When the underlying rate or threshold has changed since the page was last reviewed — always verify with the primary source.
- When the input you have is already a derived figure (net of something) — feeding it in as "gross" will double-subtract.
What goes wrong nine times out of ten
Every time you work it out for a new scenario, one of these creeps in — it's worth knowing them ahead of time.
- Assuming UK law sets overtime rates. It does not. Only the Working Time Regulations cap the 48-hour week (which staff can opt out of) and enforce the 5.6-week holiday entitlement.
- Working through paid breaks and not claiming them. Breaks of 20+ minutes after 6 hours are statutory — your employer can't make you skip them without pay in lieu.
- Confusing "time off in lieu" with overtime pay. TOIL trades hours 1:1 (usually); overtime pays cash at the contractual multiplier. Check the staff handbook.
- Forgetting that overtime is PAYE-taxable and NI-liable. An extra £200 gross becomes ~£136 in your pocket if you are a basic-rate taxpayer.
The sources behind the numbers
Where the maths needs an external authority, we cross-check against:
- GOV.UK
- ACAS
Works well alongside
If this question keeps coming up for you, the same cluster of tools usually comes next:
- UK Take-Home Salary Calculator (PAYE) — Work out your UK monthly and yearly take-home pay after Income Tax, National Insurance, student loan and pension contributions.
- Holiday Pay Calculator — Work out the statutory 5.6 weeks of paid holiday you're entitled to, pro-rated for part-time and irregular hours.
How we keep this accurate
Our calculadoras run on pure, unit-tested functions — the same logic lives in the browser and in the CI test suite. When tax rates, thresholds or official figures move, the update lands within 24 hours of the announcement. You can read the editorial policy and corrections policy.
Found an out-of-date number on Overtime Pay Calculator or anywhere else in the Employment toolkit? Send it to the editorial desk and we'll patch it. Or browse the full calculadora directory for the next tool you need.