60% Tax Trap Calculator

What is the 60% tax trap?

The 60% tax trap is the punitive band of UK income tax that bites between £100,000 and £125,140 of gross income. Above £100,000, HMRC withdraws your £12,570 personal allowance at the rate of £1 for every £2 you earn. By £125,140 the allowance is gone entirely. The lost allowance becomes taxable income at the 40% higher rate, so each extra £1 of salary in this band attracts 40% income tax on the pound itself plus an effective 20% tax on the chunk of allowance you just lost. Add 2% employee National Insurance and the true marginal rate is 62%. In Scotland, where the advanced rate is 45%, the same arithmetic lands at 67.5%.

Almost nobody crossing the £100k line is told this. Payroll software just deducts it. Parliament wrote a stealth 60% band into the tax code in 2010 and every chancellor since has kept it there, frozen alongside the personal allowance and the higher-rate threshold until 2028. The label "higher rate" stops being honest at £100,000. The real top of the scale, for upper-middle earners with children, is here.

How the personal allowance taper works

The mechanics in 2026/27 are unchanged from the previous few tax years. The headline numbers are all frozen to April 2028:

• Personal Allowance: £12,570, tax-free.
• Higher rate (40%) kicks in at £50,270.
• Personal allowance taper begins at £100,000.
• Allowance fully withdrawn by £125,140.
• Additional rate (45%) starts at £125,140.

Earn £1 above £100,000 and you lose 50p of personal allowance. That 50p of allowance now gets taxed at 40%, which is 20p of extra tax on top of the 40p of tax on the £1 itself. 60p of tax on £1 of earnings, plus 2p of employee NI on the same pound. Sixty-two pence in the pound. Your gross salary chart looks like a clean upward slope. Your take-home pay chart has a visible kink between £100k and £125,140 where each additional pound delivers meaningfully less than the pound before it. See the band-by-band breakdown in our take-home pay calculator for the exact numbers on your salary.

The salary sacrifice escape (the highest-leverage move in UK tax)

Salary sacrifice is the only legal route out of the trap, and it is brutally effective. Every £1 of gross salary you sacrifice into your workplace pension is a £1 your taxable income never sees. Sacrifice enough to bring your taxable pay back to £100,000 and you recover the full personal allowance. The arithmetic: every £1 you sacrifice costs you roughly 38p of take-home pay and lands a full £1 in your pension. In Scotland the cost drops to about 32.5p per £1 in the pension. There is no other move in the UK tax code that comes close to that leverage.

Consider a worker on £110,000. Sacrificing £10,000 brings taxable income down to £100,000, restores the full personal allowance, and saves roughly £6,200 in income tax and NI. Net cost to take-home pay: about £3,800. They are £6,200 better off and have £10,000 sitting in their pension. The trap is not just escapable - it actively rewards you for escaping. Anyone earning between £100k and £125,140 who is not using salary sacrifice is handing HMRC money that Parliament never intended them to keep, in exchange for a label ("salary") that means nothing to the tax code.

Using salary sacrifice this way is not tax avoidance. It is correcting an arithmetic absurdity Parliament wrote into the tax code. The official income tax rates on gov.uk confirm the structure. Use it. If you have unused allowance from previous years, also see the pension carry forward calculator, which lets you stack up to three previous years of the £60,000 annual allowance on top of the current year.

Why parents of young children face a 100%+ marginal rate

For parents of children under five, the £100,000 line is even more brutal. Cross it by a single pound of adjusted net income and you lose two things:

• Tax-Free Childcare: up to £2,000 per child per year of government top-up, gone.
• 30 free hours of funded childcare (for working parents of children aged 9 months to 4 years in England): gone.

Combined with the 62% trap, a parent of two pre-school children can lose more than £1 in benefits and tax for every £1 of extra salary above £100,000. The effective marginal rate crosses 100%. Taking a pay rise to £101,000 can leave a family thousands of pounds worse off. The only sensible response is to sacrifice enough into pension to keep adjusted net income at or below £100,000 until the youngest child is in school. The pension match calculator can help size the contribution if your employer matches above the auto-enrolment minimum.

Other escapes (smaller, but real)

Salary sacrifice is the heaviest hammer, but it is not the only one. The other levers that reduce adjusted net income and therefore protect the personal allowance:

• Gift Aid donations: charitable giving extends your basic-rate band and reduces adjusted net income. Less powerful than salary sacrifice (you do not recover NI), but real.
• Bonus deferral: if your employer allows it, defer a year-end bonus into the following tax year to smooth income across the threshold. Especially useful for spiky earners (commission, RSU vests, irregular bonuses).
• Cycle-to-work and EV salary sacrifice: smaller schemes, but they reduce gross pay in the same way and so help keep you below £100k.
• Annual allowance and carry forward: the £60,000 pension annual allowance plus up to three years of unused allowance carried forward gives most £100k+ earners enough headroom to sacrifice their way clear of the trap entirely.

The honest framing: this is a stealth tax that punishes financial illiteracy

The 60% trap is not a quirk. It is a deliberate revenue-raising mechanism that was introduced quietly, kept quietly, and never advertised on a payslip. It taxes people who do not know it exists, and it rewards anyone with a financial adviser or the time to read a calculator like this one. That asymmetry is the point. The fix is universally available but unequally distributed: every workplace pension scheme in the UK supports salary sacrifice, but most HR teams will not proactively tell you to use it to escape a punitive band you did not know you were in.

Read the trap as a one-off lesson and act on it. Sacrifice everything above £100,000 into your pension. Recover the personal allowance. Bank the 62% (or 67.5% in Scotland) saving as compounding retirement money instead of HMRC revenue. It is the single highest-return action available to any UK upper-middle earner, and it is fully legitimate.

Frequently asked questions