In the 2026/27 tax year, you can earn up to £50,270 before the 40% higher rate of income tax kicks in, if you live in England, Wales, or Northern Ireland. That figure combines a £12,570 tax-free personal allowance and a £37,700 basic rate band taxed at 20%.1GOV.UK. Income Tax Rates and Personal Allowances Only the pounds above £50,270 are taxed at 40%, not your whole salary. Scotland works differently, and a 42% rate applies from £43,663.
How the 40% Threshold Actually Works
UK income tax is progressive. Your income is sliced into bands, and each band has its own rate. The first £12,570 is tax-free under the personal allowance. Anything from £12,571 to £50,270 sits in the basic rate band at 20%. Income from £50,271 to £125,140 is taxed at 40%, and above £125,140 the additional rate of 45% applies.2GOV.UK. Income Tax Rates and Allowances for Current and Previous Tax Years
The most common misunderstanding is that crossing £50,270 means everything you earn is taxed at 40%. It doesn’t. If you earn £55,000, only £4,730 (the slice above £50,270) is taxed at 40%. The rest is taxed at 20% or not at all. A pay rise that pushes you over the line will never leave you worse off on your income tax alone.
Almost every kind of income counts toward the threshold: salary, bonuses, commission, self-employment profits, rental income, most pensions including the state pension, and certain taxable state benefits.3GOV.UK. Income Tax – Introduction HMRC totals them into a single pool to decide which band each pound falls into.
Scotland Has a Different Threshold
If you live in Scotland, your income tax on earnings, pensions, and rental income is set by the Scottish Parliament, not Westminster.4Scottish Government. Taxes Scotland uses six bands, and its higher rate is 42%, not 40%. For 2026/27:
- Starter rate 19%: £12,571 to £16,537
- Basic rate 20%: £16,538 to £29,526
- Intermediate rate 21%: £29,527 to £43,662
- Higher rate 42%: £43,663 to £75,000
- Advanced rate 45%: £75,001 to £125,140
- Top rate 48%: over £125,140
The gap is significant. A Scottish taxpayer hits 42% at £43,663; someone in England, Wales, or Northern Ireland doesn’t reach 40% until £50,270.5GOV.UK. Income Tax in Scotland Your tax code carries an “S” prefix so your employer deducts the right amount.6HM Revenue and Customs. HMRC Internal Manual – PAYE13145 – Coding – General Principles Scottish rates apply only to non-savings, non-dividend income; interest and dividends still follow UK-wide rates.
Why the Threshold Freeze Matters
The £50,270 higher rate threshold and the £12,570 personal allowance have been frozen since April 2021. The 2025 Budget extended that freeze to April 2031.7House of Commons Library. Income Tax – Freezing the Personal Allowance and the Higher Rate Threshold8HM Revenue and Customs. Maintaining Thresholds Until 5 April 2031
Wages tend to rise with inflation. The tax bands don’t. Someone earning £45,000 today could find themselves above £50,270 within a few years without any real gain in spending power. The effect is called fiscal drag, and the Office for Budget Responsibility has estimated that millions of extra taxpayers will be pulled into the higher rate band before the freeze ends.
The 60% Tax Trap Above £100,000
The personal allowance doesn’t stay at £12,570 for everyone. Once your adjusted net income exceeds £100,000, the allowance shrinks by £1 for every £2 you earn above that level. By £125,140 the allowance is gone, and every pound of your income is taxable.1GOV.UK. Income Tax Rates and Personal Allowances
The effect is an effective marginal rate of about 60% on income between £100,000 and £125,140. For each extra £2 earned, you pay 40% on that £2 and also lose £1 of allowance that was shielding another pound from 40% tax. Bonuses and one-off gains that cross this line often produce a nasty surprise.
The taper uses “adjusted net income,” not your headline salary. Adjusted net income is your total taxable income minus certain reliefs, most importantly gross pension contributions and the grossed-up value of Gift Aid donations.9GOV.UK. Personal Allowances – Adjusted Net Income Someone earning £115,000 who pays £10,000 into a pension has an adjusted net income of £105,000, keeping most of their allowance.
The Child Benefit Charge From £60,000
If you or your partner claim Child Benefit and either of you has adjusted net income above £60,000, a tax charge starts clawing back the benefit.10GOV.UK. High Income Child Benefit Charge – Overview By £80,000 the whole benefit is effectively repaid through tax. The charge is based on the higher earner’s income, not household income, and it forces a Self Assessment return.
You can be well under the 40% threshold at £50,270 and still hit this charge at £60,000. Pension contributions that lower your adjusted net income can reduce or eliminate it.11GOV.UK. Child Benefit Tax Calculator
National Insurance on Top
Income tax isn’t the only deduction. Employee National Insurance adds a further layer. For 2026/27 you pay 8% on earnings between £12,570 and £50,270, then 2% on everything above that.12GOV.UK. Rates and Thresholds for Employers 2026 to 2027 Combined with income tax, the real marginal rates are:
- Up to £12,570: 0%
- £12,571 to £50,270: 28% (20% tax + 8% NI)
- £50,271 to £100,000: 42% (40% tax + 2% NI)
- £100,001 to £125,140: roughly 62% including the tapered personal allowance
- Above £125,140: 47% (45% tax + 2% NI)
The jump from 28% to 42% at £50,270 is what people feel in their pay packet when they first cross into higher rate territory.
How to Stay Below the Threshold
If you sit just above £50,270, or anywhere between £100,000 and £125,140, a few legitimate moves can bring your taxable income down.
Pension Contributions
Pensions are the most powerful lever. You can contribute up to £60,000 a year, or 100% of your earnings if lower, and receive tax relief at your marginal rate. A higher rate taxpayer contributing £10,000 effectively pays £6,000 after relief. The contribution also cuts your adjusted net income, which can restore a tapered personal allowance or wipe out a Child Benefit charge. Earners with adjusted income above £260,000 face a tapered annual allowance that can pull the £60,000 limit down to £10,000.
Gift Aid Donations
Charitable donations through Gift Aid also produce relief at your marginal rate. Donate £100 and the charity claims a further £25 from HMRC, making the total gift £125. As a 40% taxpayer, you can reclaim another £25 through your tax return, the difference between the 40% you paid and the 20% already claimed by the charity.13GOV.UK. Tax Relief When You Donate to a Charity Gift Aid donations reduce adjusted net income in the same way pension contributions do.
Salary Sacrifice
Salary sacrifice lets you swap gross salary for a non-cash benefit before tax is calculated. Common options are extra pension contributions, the Cycle to Work scheme, and employer childcare. Because the sacrifice happens before tax and NI, your taxable income falls. Someone on £53,000 who sacrifices £3,000 into a pension drops below the higher rate threshold entirely. Your post-sacrifice pay cannot fall below the national minimum wage, and not every employer offers these arrangements.