Is It True That a Pay Rise Can Leave You Worse Off?

Moving into a higher tax band taxes only the extra slice of income, not your whole salary. Here is what actually happens to your take-home pay.

Summary

• Only the slice of income above each threshold is taxed at the higher rate, so crossing a tax band never reduces your take-home pay.
• The standard Personal Allowance is £12,570, then 20% up to £50,270, 40% up to £125,140 and 45% above that for England, Wales and Northern Ireland.
• Bonuses and overtime go through the same PAYE system as salary; a large one-month deduction usually evens out over the tax year.
• Above £100,000 the Personal Allowance falls by £1 for every £2, creating a 60% effective marginal rate until it disappears at £125,140.
• A rise into the higher rate band halves the personal savings allowance to £500 and can end Marriage Allowance eligibility.

The worry is a familiar one: earn a bit more and somehow end up with less in the bank. For almost everyone paid through UK payroll, that is not how the system works. This article takes the common beliefs one at a time, explains what the rules actually say, and covers the narrow cases where extra income really is clawed back.

The Myths at a Glance

• Myth: a pay rise pushes your whole salary into a higher tax band. Fact: only the portion of income above each threshold is taxed at the higher rate.
• Myth: bonuses and overtime are taxed at a special punitive rate. Fact: they go through the same PAYE system as the rest of your pay.
• Myth: earning more can leave you worse off. Fact: crossing a band never cuts take-home pay, although a few allowances taper or disappear at higher incomes, which narrows the gain in specific ranges.

Myth: Earning More Puts Your Whole Salary in a Higher Tax Band

It is easy to read a headline rate and assume it applies to everything you earn. Income Tax does not work that way. HMRC describes the rates as steps on a staircase: as you earn more, you step up, but only the top part of your earnings, the part standing on the higher step, is taxed at the higher rate. Your whole income is never taxed at one rate.

Fact: How Income Tax Bands and the Personal Allowance Actually Work

Each tax year runs from 6 April to 5 April. The standard Personal Allowance, the amount of income you can receive before paying Income Tax, is £12,570. Above that, the bands for England, Wales and Northern Ireland are:

Take a salary of £60,000. The first £12,570 is covered by the Personal Allowance and taxed at 0%, the slice up to £50,270 is taxed at 20%, and only the remaining £9,730 is taxed at 40%. Even though that salary sits in the higher rate band, most of it is still taxed at 0% or 20%. Scotland has its own rates and bands for most employment income, so the figures differ there.

The thresholds are unchanged for 2026 to 2027. As wages rise over time, more employees are drawn into higher bands, but crossing one changes the rate on the extra slice only, never on the salary you were already earning.

Myth: Bonuses and Overtime Are Taxed at a Special Punitive Rate

Bonuses and overtime are not taxed at a higher rate than salary. They go through PAYE, Pay As You Earn, the automatic system employers use to collect Income Tax and National Insurance from wages. Your employer works out what to deduct using your tax code and your pay so far in the tax year, on a cumulative basis, and overtime and other extra earnings are treated as part of the pay period in which they arrive.

The catch is arithmetic. A £4,000 bonus paid in one month makes that payslip look as though you earn that much every month, so the deduction for the period can be large. Because the calculation is cumulative, later payslips usually show less tax once the year-to-date totals catch up. Check your payslip before concluding that the bonus was penalised.

Fact: The Few Situations Where More Income Really Does Cost You Extra

There are genuine clawbacks, but they are narrower than the myths suggest.

• The Personal Allowance taper. Once adjusted net income passes £100,000, the allowance falls by £1 for every £2 above that limit, disappearing entirely at £125,140. In that range the effective marginal rate reaches 60%, because you pay 40% tax while losing allowance at the same time. Even so, take-home pay still rises with each extra pound earned.
• The personal savings allowance. Basic rate taxpayers can receive £1,000 of savings interest tax-free; higher rate taxpayers get £500. A pay rise that moves you from basic to higher rate halves that allowance. Holding savings in an ISA keeps the interest outside your tax bill, and our guide to ISAs and which type suits your savings goal explains the options.
• Marriage Allowance. A spouse or civil partner who is not liable at the higher or additional rate can transfer some of their unused Personal Allowance to their partner. A pay rise that takes the lower earner into the higher rate band ends that eligibility.

National Insurance is separate from Income Tax but comes out of pay in the same way, and most National Insurance thresholds are frozen until 2028, so larger wages also carry more of it.

What to Check Before You Turn Down Extra Hours

Start with your payslip. It shows your tax code, the tax you have paid in the current year and how much you are likely to pay for the rest of it, which is a more reliable guide than any single month’s deduction.

Then consider what the extra income could fund. Pension contributions reduce the taxable income HMRC assesses, so putting part of a rise into a workplace scheme softens the effect of a higher band; our article on workplace pensions and auto-enrolment covers the essentials. Any surplus is easier to plan for with a clear picture of your outgoings, which is where our guide to budgeting for UK household bills helps.

If you live in Scotland, check the Scottish bands rather than the ones above. For decisions about your own pay, use GOV.UK’s guidance on Income Tax rates or speak to a qualified adviser, because personal circumstances vary.

Next steps

• Workplace Pensions and Auto-Enrolment: The Essentials: how pension contributions can reduce the income HMRC taxes.
• ISAs Explained: Which Type Suits Your Savings Goal?: keeping savings interest out of your tax calculation as your income grows.
• Budgeting for UK Household Bills: Council Tax, Energy and the Rest: planning what any extra take-home pay will actually cover.

Questions readers ask