Yes — overtime is taxed exactly the same as regular pay
Overtime, commission, bonuses, and any other taxable cash earnings from your employment are aggregated with your regular salary and taxed at your marginal income tax and National Insurance rates. There is no special "overtime tax band" and no penalty rate — you simply pay tax on the extra income at whatever rate that extra income falls into.
What can make overtime feel like it is being taxed harder is that the extra hours often push a chunk of the pay into a higher tax band than your regular wage. If your salary is £48,000, your last few thousand pounds of regular pay are taxed at 20%; the first few thousand pounds of overtime above £50,270 are taxed at 40% plus 2% National Insurance. That feels like a step up, but it is the marginal rate of the new income — not a punitive tax on overtime specifically.
Why your first overtime payslip can look wrong
PAYE annualises your year-to-date earnings to estimate the tax owed. If you earn an unusually large sum in one month — say, a big chunk of overtime in December — the PAYE algorithm assumes that pace continues for the rest of the tax year and may temporarily apply a higher tax rate. The over-deduction reverses out in subsequent months once your YTD smoothes back out. If it does not (for example, if you change jobs), HMRC will refund you at year-end via a P800 calculation.
If your tax code is wrong, the correction can be painful. Common triggers: a recent job change, two concurrent jobs without the BR code applied correctly, or HMRC adjusting for a benefit-in-kind. See the why is my tax code BR guide for the typical fixes.
National Insurance on overtime
NI is also paid on overtime, at the same rate as regular pay (8% in the main band, 2% above the upper earnings limit). Unlike income tax, NI is non-cumulative — it is calculated on each pay period in isolation, so a large overtime month is often hit with a chunk of "main-band" NI even if your annual earnings remain low. This balances out for income tax (cumulative) but not for NI, which is one reason your effective deduction on a big overtime paycheque can look bigger than expected.
Hitting the 60% tax trap
The marginal rate above £100,000 jumps to 60% because your Personal Allowance tapers away by £1 for every £2 of income above the threshold. If you earn £95,000 and a £10,000 overtime payment pushes you to £105,000, £5,000 of that overtime is effectively taxed at 60% rather than 40%. See the what is the 60% tax trap page and the 60% trap tip for how pension contributions can rescue the marginal rate.
Related on this site
Use the bonus and pay rise calculator to model the take-home from a one-off overtime or bonus payment, and the tax calculator to see how the year-on-year picture changes. The salary sacrifice calculator shows how pension contributions can recover marginal-rate tax on the same earnings.
Why the deduction can look brutal
The next pound of overtime can land in a higher income-tax band, trigger more National Insurance, hit student-loan deductions, and sometimes interact with Child Benefit or the Personal Allowance taper. That is why the overtime net can feel disproportionately small.
The useful question
The better question is not “is overtime taxed differently?” but “how much of this extra pay do I actually keep?” That answer depends on where the extra pay lands in your overall annual position.
Best next page
Use Bonus, Pay Rise and Overtime Calculator to model the extra income rather than your full annual salary.
Worked example: what you actually keep
Take Sam, a basic-rate employee on a £30,000 salary who works £500 of overtime in a month. All of it sits comfortably inside the basic-rate band, so the deductions are: 20% income tax (£100) and 8% employee National Insurance (£40). Sam keeps £360 of the £500 — an effective deduction of 28%. Nothing unusual; this is the ordinary basic-rate-plus-NI take.
Now take Jordan, on £49,000, who works the same £500 of overtime. The first £1,270 of pay above £49,000 is still basic-rate, but once Jordan’s cumulative pay crosses £50,270 the next slice is taxed at 40% and the National Insurance rate on it drops to 2% (NI falls above the upper earnings limit, while income tax rises). So part of the overtime is taxed at 28% and part at 42%. If the whole £500 falls above the threshold, Jordan keeps £290 — an effective 42% deduction. Same overtime, very different net, purely because of where it lands in the annual picture.
The key point: there is no “overtime rate.” Both workers are simply paying the marginal rate that applies to the band their extra pay falls into. Model the marginal slice — not your salary — when you decide whether extra hours are worth it.
Student loans and the HICBC trap
Two deductions surprise people more than income tax does. The first is the student loan. Repayments are 9% of everything you earn above the plan threshold (6% for a postgraduate loan), and — like National Insurance — they are calculated per pay period, not cumulatively. A big overtime month can push that period’s pay over the weekly or monthly threshold and trigger a repayment even if your annual earnings stay below the yearly figure. Unlike tax, that period’s student-loan deduction is not refunded just because a later month is quiet, so a lumpy overtime pattern can cost a borrower more across the year than the same total paid evenly.
The second is the High Income Child Benefit Charge. If overtime lifts your adjusted net income into the £60,000–£80,000 band and your household claims Child Benefit, you start repaying it through the charge — effectively an extra marginal cost on top of 40% tax and 2% NI across that band. Combined with the loss of the Personal Allowance above £100,000 (the 60% trap covered above), a high earner’s extra overtime can be taxed at a true marginal rate well above 40%. In all of these cases the standard fix is the same: a pension contribution on the extra earnings reduces adjusted net income, can restore Child Benefit or the Personal Allowance, and converts a heavily taxed overtime pound into pension savings. The adjusted net income calculator shows exactly where you stand against the £60,000 and £100,000 lines.
How UK Tax Drag holds itself to account
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