The 40% tax threshold in the UK starts at £50,271 of taxable income for the 2025/26 and 2026/27 tax years, and it applies in England, Wales, and Northern Ireland. Only the portion of your income above £50,270 is taxed at 40%. Everything below that is taxed at lower rates or falls inside your tax-free Personal Allowance. The 40% band runs up to £125,140, after which a 45% additional rate takes over.1GOV.UK. Income Tax Rates and Personal Allowances
How the £50,270 Starting Point Is Built
The threshold is the sum of two building blocks: the £12,570 Personal Allowance (income you earn tax-free) and the £37,700 basic rate band taxed at 20%.2House of Commons Library. Direct Taxes: Rates and Allowances for 2025/26 Stack them and you reach £50,270. Earn a single pound above that, and that pound is the first to be taxed at 40%.
Gross income and taxable income are not the same thing. Gross income is everything you earn; taxable income is what remains after your Personal Allowance is subtracted. Someone with a gross salary of exactly £50,270 has taxable income of £37,700, all of it inside the basic rate band.
You Don’t Pay 40% on Your Whole Salary
The UK uses a marginal system. Your income fills each band in sequence, and only the slice that spills into the next band is taxed at the higher rate. The first £12,570 is tax-free. The next £37,700 is taxed at 20%. Anything above £50,270 is taxed at 40%, up to £125,140.
On a £60,000 salary, only £9,730 sits in the 40% band. Total income tax comes to roughly £11,432, which is an effective rate of around 19%. People sometimes turn down pay rises in the belief that crossing into the higher band means their entire salary is taxed more heavily. It doesn’t. You only ever keep less of the pounds above the threshold, never less of the pounds below it.
What Income Counts Toward the Threshold
HMRC adds together your income streams to decide which band you sit in. Employment wages through PAYE are the obvious one, but self-employment profits, rental income, and savings interest all count toward the total.3GOV.UK. Income Tax: Introduction A £45,000 salary plus £8,000 of rental profit gives total income of £53,000, putting £2,730 of it into the higher-rate band even though the salary alone would not.
Dividends count toward your total income for the purpose of deciding your band, but they have their own rates. Once you’re a higher-rate taxpayer, dividends above the £500 dividend allowance are taxed at 33.75% rather than 8.75%.4GOV.UK. Check If You Have to Pay Tax on Dividends Capital gains sit outside the income tax system entirely but interact with it: higher-rate taxpayers pay 24% on most gains.5GOV.UK. Capital Gains Tax: Rates
What Changes Once You Cross Into the 40% Band
Two things shift beyond the headline rate. Your Personal Savings Allowance drops from £1,000 to £500, so only the first £500 of bank or building society interest stays tax-free.6GOV.UK. Tax on Savings Interest: How Much Tax You Pay Dividends above the £500 dividend allowance move up to the 33.75% rate.
National Insurance also shifts at the same £50,270 mark. Employees pay 8% on earnings between the Primary Threshold and the Upper Earnings Limit, then 2% above.7GOV.UK. Rates and Thresholds for Employers 2026 to 2027 The Upper Earnings Limit matches the higher-rate threshold exactly. So on the pound just below £50,270, the combined deduction is 28% (20% tax plus 8% NI); on the pound just above, it’s 42% (40% tax plus 2% NI). That jump is the real change in take-home pay when you cross the line.
The 60% Trap Between £100,000 and £125,140
Higher up the income scale, the Personal Allowance itself is withdrawn. For every £2 of adjusted net income above £100,000, you lose £1 of the £12,570 allowance, and it vanishes entirely at £125,140.1GOV.UK. Income Tax Rates and Personal Allowances The withdrawal creates an effective marginal rate of roughly 60% on income in this band: 40% income tax plus another 20% from losing tax-free allowance. Add the 2% NI still due above the Upper Earnings Limit, and the real deduction on each additional pound sits near 62%.
The trap most often catches people with a one-off bonus, share options, or a capital event that pushes income above £100,000 temporarily. The usual response is to increase pension contributions enough to bring adjusted net income back below £100,000, which restores the full allowance.
Child Benefit Clawback for Higher Earners
If you or your partner receive Child Benefit and either of you has adjusted net income above £60,000, the higher earner has to repay part of it through the High Income Child Benefit Charge. The repayment rate is 1% of the benefit for every £200 of income above £60,000, and it reaches 100% at £80,000.8GOV.UK. High Income Child Benefit Charge
The charge is assessed on individual income, not household income. Two parents earning £55,000 each keep the full benefit; a single earner on £70,000 with a non-earning partner loses a chunk of it. If the charge applies to you, you generally need to file a self-assessment return to pay it, even if the rest of your income is on PAYE.
Ways to Keep Income Below the Threshold
Several routes reduce the income HMRC counts, or push out the point at which the 40% rate starts to bite.
Pension Contributions
Money paid into a pension reduces adjusted net income. Under salary sacrifice, the contribution is taken before tax, so it never enters your taxable income at all. Under relief at source, the pension provider claims 20% basic-rate relief automatically, and a higher-rate taxpayer reclaims the further 20% through self-assessment or a tax code adjustment.9GOV.UK. Claim Tax Relief on Your Private Pension Payments The annual allowance is £60,000 or 100% of earnings, whichever is lower.
Gift Aid Donations
A Gift Aid donation extends your basic rate band by the gross value of the donation. Donate £100, the charity claims £25 from HMRC, and the gross donation is £125. As a higher-rate taxpayer, you can then reclaim £25 yourself through self-assessment, the difference between the 40% and 20% rates on that grossed-up amount.10GOV.UK. Tax Relief When You Donate to a Charity: Gift Aid
One Route That Doesn’t Work
Marriage Allowance lets a spouse or civil partner transfer £1,260 of unused Personal Allowance to the other partner, but only if the recipient is a basic-rate taxpayer with income between £12,571 and £50,270.11GOV.UK. Marriage Allowance: How It Works If your income puts you in the 40% band, you cannot receive the transfer, regardless of what your partner earns.
Scotland Uses Different Rates and Bands
Scottish residents don’t use the £50,271 threshold at all. Scotland sets its own rates and bands, and its equivalent of the “40% rate” is a 42% higher rate that starts at £43,663 of taxable income for 2025/26.12GOV.UK. Income Tax in Scotland There are also starter, intermediate, advanced (45%), and top (48%) rates that have no equivalent in the rest of the UK. Tax residency determines which system applies, not where your employer is based, so a Scottish resident working remotely for a company in London pays Scottish rates.
Why More People Are Crossing the Line
The Personal Allowance and basic rate band have been frozen in cash terms since April 2022. The original freeze was set to end in April 2028; at the Autumn Budget 2025 the government extended it to April 2031.13House of Commons Library. Fiscal Drag: An Explainer Because the thresholds don’t rise with inflation or wage growth, more people cross into the 40% band each year as their pay rises in cash terms. Someone who earned £48,000 in 2022 and has had normal pay increases since may now sit above £50,270 for the first time. If your income is near the threshold, it’s worth checking whether recent pay has pushed you over, and whether any of the routes above bring you back below.