In the UK, you start paying 40% income tax once your total earnings pass £50,270 in England, Wales, or Northern Ireland.1GOV.UK. Income Tax Rates and Personal Allowances That figure is your £12,570 tax-free Personal Allowance plus the £37,700 Basic Rate band stacked on top. Only the income above £50,270 is taxed at the higher rate, not your whole salary. Scotland works differently, and we’ll cover that below.
How the £50,270 Threshold Works
UK income tax is progressive, so different slices of your income are taxed at different rates. The first £12,570 you earn is tax-free under the Personal Allowance. The next £37,700 is taxed at the Basic Rate of 20%. Once your total income passes £50,270, every additional pound is taxed at 40% until you reach £125,140, where the 45% Additional Rate takes over.2GOV.UK. Income Tax Rates and Allowances for Current and Previous Tax Years
The most common misunderstanding here is that crossing £50,270 pushes your whole salary into the 40% bracket. It doesn’t. If you earn £60,000, only the £9,730 above the threshold is taxed at 40%. That’s £3,892 of higher-rate tax, not the £24,000 you’d owe if the whole salary were taxed at that rate. Most of your income stays protected at the lower bands, and only the top slice ever attracts 40%.
What Income Counts Toward the Threshold
Your total income for tax purposes is not just your salary. Savings interest, dividends, rental income, and self-employment profits all count toward the £50,270 line. If your employment pays £48,000 and you receive £3,000 in rental income in the same year, your total is £51,000 and part of it falls into the higher rate.
Some income types come with their own allowances that reduce the tax actually payable, though they don’t change which band you’re in:
- Personal Savings Allowance: basic-rate taxpayers can earn £1,000 of savings interest tax-free. Higher-rate taxpayers get £500. Additional-rate taxpayers get none.
- Dividend Allowance: the first £500 of dividend income is tax-free at any band. Above that, higher-rate taxpayers pay 35.75% on dividends in 2026/27, up from 33.75% the previous year.
Interest earned inside an ISA doesn’t count toward any of these calculations at all.
The Threshold Is Different in Scotland
If you live in Scotland, the 40% rate doesn’t apply to you. The Scottish Parliament sets its own rates for non-savings and non-dividend income, using six bands instead of three.3GOV.UK. Income Tax in Scotland The Scottish Higher rate is 42%, and it kicks in at £43,663 rather than £50,270.
The Scottish bands for 2025/26 are:
- Starter rate (19%): £12,571 to £15,397
- Basic rate (20%): £15,398 to £27,491
- Intermediate rate (21%): £27,492 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
Scottish residents therefore lose roughly £6,600 of headroom before the higher rate applies. If you move between Scotland and another part of the UK during the tax year, HMRC updates your tax code so payroll applies the right regional rates.
Ways to Push the 40% Point Higher
Pension contributions and Gift Aid donations can effectively raise the income level at which the 40% rate hits you. These aren’t loopholes. They’re built into the system to encourage retirement saving and charitable giving, and both work by widening your Basic Rate band so more of your income is taxed at 20% rather than 40%.
Pension Contributions
When you pay into a pension through a relief-at-source scheme, your contribution is grossed up by the basic rate. A £100 payment becomes £125 in your pension because the scheme claims 20% tax relief from HMRC automatically. As a higher-rate taxpayer, you claim the extra 20% back through Self Assessment or by getting your tax code adjusted. Each £100 in your pension ends up costing you £60.
On top of that, your Basic Rate band is extended by the gross value of the contribution. Put £5,000 into a pension, gross it up to £6,250, and the point at which 40% tax begins shifts from £50,270 to £56,520 for that year. The annual allowance in 2026/27 is £60,000 across all your pension schemes, counting your own contributions, employer contributions, and tax relief. Unused allowance from the previous three years can be carried forward if you didn’t use it all.
Salary sacrifice reaches the same destination by a different route. You agree to a lower contractual salary, and your employer pays the difference into your pension. Because your taxable salary itself is lower, you pay less income tax and less National Insurance, and there’s no separate relief to claim.
Gift Aid Donations
Charitable donations under Gift Aid extend your Basic Rate band in the same way. Donate £100 with a Gift Aid declaration and the charity claims 25% on top, making it £125. Your Basic Rate band widens by that £125, so £125 of income that would have been taxed at 40% is taxed at 20% instead, saving you £25. You claim this through Self Assessment.
Both pension contributions and Gift Aid also reduce what HMRC calls your adjusted net income, which matters at higher income levels. More on that below.
Why the Threshold Isn’t Rising
The Personal Allowance of £12,570 and the £37,700 Basic Rate band have been frozen since 2021. The Finance Act 2023 extended the freeze through April 2028, and the 2025 Budget pushed it out again to April 2031.4GOV.UK. Income Tax: Maintaining the Personal Allowance and the Basic Rate Limit So the £50,270 higher-rate threshold isn’t scheduled to move for years.
This is where fiscal drag comes in. Wages rise with inflation, but the threshold stays put, so more people cross into the 40% band each year without earning any more in real terms. Someone on £48,000 today can be a couple of pay rises away from paying higher-rate tax, even if their spending power hasn’t really changed.
National Insurance at the Same Income Level
The 40% income tax threshold lines up almost exactly with a National Insurance change. Employee Class 1 National Insurance is charged at 8% on earnings between the Primary Threshold (£242 per week) and the Upper Earnings Limit (£967 per week).5GOV.UK. National Insurance Rates and Categories £967 a week works out to roughly £50,270 a year. Above that, the NI rate drops to 2%.6House of Commons Library. Direct Taxes: Rates and Allowances
So at £50,270, your income tax rate jumps from 20% to 40%, but your NI rate falls from 8% to 2% at the same point. Your combined marginal rate goes from 28% to 42%. Still a real step up, but the NI drop takes six percentage points off what would otherwise be a much larger jump.
What Changes Above £100,000 and £125,140
The 40% rate itself continues up to £125,140, but two things happen along the way that matter if your income is anywhere near those levels.
Once your adjusted net income passes £100,000, you start losing your £12,570 Personal Allowance at a rate of £1 for every £2 above the threshold. By £125,140 the allowance is fully gone. On each extra pound earned in that band you pay 40% tax on the pound itself and lose 50p of previously tax-free allowance, which is now also taxed at 40%. The effective marginal rate on income between £100,000 and £125,140 is 60%, higher than the 45% Additional Rate that applies once you’re past £125,140.1GOV.UK. Income Tax Rates and Personal Allowances
Pension contributions are the usual way to bring adjusted net income back below £100,000. Earn £110,000, put £10,000 into a pension (grossed to £12,500), and your adjusted net income drops to £97,500. You recover the full Personal Allowance, get 40% relief on the contribution itself, and build retirement savings at the same time.
Above £125,140, the Additional Rate of 45% applies to income at that level and above.2GOV.UK. Income Tax Rates and Allowances for Current and Previous Tax Years The Personal Allowance is already gone by that point, so there’s no hidden extra layer on top of the headline rate.