The 60% Tax Trap UK 2026/27: How to Escape When Earning GBP100k-GBP125k

If your adjusted net income sits between £100,000 and £125,140 in 2026/27, you are caught in one of the most punishing corners of the UK tax system -- the 60% tax trap. Understanding how it works, and how to get out of it, could save you thousands of pounds.

How the Personal Allowance Taper Creates a 60% Rate

Every UK taxpayer normally receives a Personal Allowance of £12,570 -- income you can earn completely free of tax. But HMRC begins withdrawing that allowance once your adjusted net income exceeds £100,000.

The rule is simple but brutal: for every £2 you earn above £100,000, you lose £1 of Personal Allowance. By the time you reach £125,140, your entire £12,570 allowance has been wiped out.

What does that mean in practice? In that £25,140 band:

• You pay 40% Higher Rate Income Tax on the extra income.
• You also lose allowance worth 40% tax relief (since the allowance covers income that would otherwise be taxed at 40%).
• Combined: 40% + 20% (effective loss of allowance) = 60% effective marginal rate.

For some earners, particularly those paying Scottish Income Tax, the rate can creep above 62%.

A Worked Example

Suppose your salary rises from £100,000 to £110,000 -- a £10,000 pay rise.

• Tax on the extra £10,000 at 40%: £4,000
• Allowance lost: £5,000 (£10,000 / 2), taxed at 40%: £2,000
• Total extra tax: £6,000
• Effective rate on that rise: 60%

You keep just £4,000 of a £10,000 raise. After employee National Insurance at 2% (you are already above £50,270), you net roughly £3,800 -- an effective combined rate approaching 62%.

Why This Matters for Bonuses and Overtime

The trap is especially relevant if your base salary is £90,000--£99,000 and you receive a bonus that pushes you into the £100k--£125k zone. Even a modest bonus can trigger significant allowance loss. Many employees are unaware until they receive an unexpected tax bill or a dramatically reduced PAYE code.

HMRC adjusts your tax code (often to something like K0 or 0T) once it detects your income is above £100,000, removing your allowance from PAYE entirely.

The Main Escape Route: Salary Sacrifice into a Pension

The single most effective legal method to avoid the trap is to reduce your adjusted net income below £100,000 using pension contributions.

Salary sacrifice works by having your employer pay part of your salary directly into your workplace pension instead of to you. Because the money never becomes part of your salary:

• Your adjusted net income falls.
• Your Personal Allowance is restored.
• Your employer also saves employer National Insurance (15% above £5,000 from April 2025), and many employers pass some or all of that saving back to you.

Example: Salary of £110,000 with a £10,000 salary sacrifice pension contribution.

• Adjusted net income: £100,000
• Personal Allowance: fully restored to £12,570
• Tax saving vs. no sacrifice: approximately £6,000
• Plus employer NI saving on £10,000 at 15%: £1,500 (potentially passed on)

The Pension Annual Allowance for 2026/27 is £60,000 (or 100% of earnings if lower), so most earners in this band have ample room to make significant contributions.

Other Ways to Reduce Adjusted Net Income

Pension is the most powerful tool, but other options exist:

• Gift Aid donations. Charitable donations under Gift Aid extend your basic rate band and reduce adjusted net income. A £8,000 cash donation becomes £10,000 gross.
• Pension contributions by cheque. If salary sacrifice is not available (common for the self-employed), personal pension contributions also reduce adjusted net income when claiming higher-rate relief.
• Employer-provided childcare schemes. Older schemes can reduce gross pay.

Note: ISA contributions do not reduce adjusted net income.

Tapered Annual Allowance: A Warning for Very High Earners

If your threshold income exceeds £200,000, a separate Tapered Annual Allowance begins to reduce your £60,000 pension limit -- by £1 for every £2 over £260,000 adjusted income, down to a floor of £10,000. This affects very high earners differently; take professional advice if you are in this territory.

Practical Steps to Take Now

1. Check your P60 or latest payslip to estimate your 2026/27 adjusted net income.
2. Calculate how far above £100,000 you are likely to finish the year.
3. Ask your HR or payroll department whether salary sacrifice is available and what the mechanics are.
4. Confirm the total pension contributions already made this year (employee + employer) to ensure you stay within the £60,000 Annual Allowance.
5. Consider speaking to an independent financial adviser if your situation involves share options, rental income or other variable elements that make the calculation complex.

Summary

The 60% tax trap is a genuine anomaly in the UK tax system that catches many earners by surprise. With adjusted net income between £100,000 and £125,140, every extra pound of income triggers tax at a rate far above the stated Higher Rate of 40%. Salary sacrifice pension contributions remain the cleanest, most widely available solution -- and can restore your full Personal Allowance while building long-term retirement wealth.