If a recruiter has just offered you £110,000, congratulations. You’re now officially a “HENRY” — High Earner, Not Rich Yet — and you’ve walked straight into the most punishing marginal-tax zone in the UK tax code. Every extra pound you earn between £100,000 and £125,140 is taxed at an effective marginal rate of 62% (or 71% if you have kids in nursery), not the 45% you’d assume from the additional-rate band.
This is the “£100k Trap”, and at £110,000 you’re sitting almost exactly in the middle of it. This guide shows the exact 2024/25 payslip, why the number is worse than a naive tax calculator suggests, and the single pension-sacrifice figure that turns the trap into your best tax break in UK personal finance.
⚡ Skip to the answer: Run £110,000 through the £100k Trap Calculator to get your personal escape number in 10 seconds, or grab the free playbook (PDF).
The headline number: £110,000 gross → £70,297 net (2024/25, no pension)
If you take the full £110,000 as pay with a standard tax code and 0% pension:
| Item | Amount |
|---|---|
| Gross salary | £110,000 |
| Personal Allowance (tapered) | £7,570 |
| Income Tax | £34,432 |
| Employee NI (Class 1) | £5,271 |
| Take-home (net) | £70,297 |
| Effective tax rate | 36.1% |
Your PA has been shrunk from £12,570 to £7,570 because you’re £10,000 into the £100,000–£125,140 taper zone (£1 lost for every £2 over £100k). That £5,000 of “lost” allowance is now taxed at 40% — a hidden £2,000 tax bill on top of the visible one.
Why “£110k pays 62% marginal, not 45%”
Between £100,000 and £125,140 of adjusted net income, three things stack up on your next £1 of pay:
- 40p Income Tax — you’re in the higher-rate band.
- +20p from the PA taper — 50p of Personal Allowance disappears, and that 50p was previously tax-free but is now taxed at 40% (0.5 × 40p = 20p).
- +2p Employee NI — the upper-band employee NI rate.
Total: 62p tax out of every extra £1. Above £125,140 the taper is finished and the marginal rate actually drops back to 47% (45% + 2%).
At £110,000 you have another £15,140 to go before you escape. That’s £15,140 × 62% = £9,387 more tax as you climb through the trap. On a straight cash basis, a £15,000 pay rise from £110k → £125k adds only ~£5,700 to your net pay. That’s ~£3.80/hour before you factor in commute, stress and lost weekends.
The child-benefit landmine at £110k
If you have children, the picture gets uglier:
- Tax-Free Childcare (the government top-up worth up to £2,000/child/year) has a £100,000 income cliff-edge. At £110k adjusted net income you get £0 TFC, but if you sacrificed £10k into pension you’d get the full £2,000 back — a £2,000 refund on a £10,000 investment before any tax relief kicks in.
- High Income Child Benefit Charge (HICBC) claws back Child Benefit from £60k to £80k. At £110k income with two kids, you’ve already lost the full ~£2,212/year and no amount of adjustment at £110k gets it back — you’d need to sacrifice down to under £80k.
For a two-child, two-earner family sitting at £110k, sacrificing back under £100k typically nets a total marginal recapture rate of 71–83%. It’s the highest-return legal tax move in UK personal finance, and almost nobody at £110k realises it.
The escape number: sacrifice £10,500 into pension
To drop your adjusted net income to £99,500 (£500 below the taper — a buffer for bank interest and small pay rises), you need to sacrifice £10,500 into your workplace pension.
| Move | Amount |
|---|---|
| Extra pension contribution | £10,500 |
| Reduction in take-home pay | £4,032 |
| Effective personal cost per £1 in pot | 38.4p |
| Personal Allowance restored | £5,000 |
| Tax + NI saved directly | £6,468 |
| Net “free money” the trap gave back | £6,468 |
That is a 62% return on a pension contribution before any market growth. There is no legitimate move anywhere else in UK personal finance that comes close.
Add Tax-Free Childcare recovery and the return jumps another £2,000+ per child. HICBC recovery is entirely income-based and can’t be reached from £110k with pension alone, but the point still stands: at £110,000, salary sacrifice is a category-defining decision, not an optional optimisation.
When £110k does not mean sacrifice everything
There are legitimate cases for taking the cash:
- You’re planning to leave the UK within 5 years. Your pension pot faces overseas transfer complexity, potentially a Lifetime Allowance charge if the pot is large, and you’ll pay tax again on drawdown in your new country.
- You have < 12 months of cash cushion. Emergency fund comes first. Salary sacrifice is one-way — you can’t get the cash back if you’re made redundant next quarter.
- You’re maxed out at the Annual Allowance (£60k). Your employer’s contribution + your sacrifice + carry-forward can hit the annual limit fast at £110k+. Above it, tax relief reverses.
- You need mortgage borrowing this year. Lenders use gross salary. Sacrificing £10,500 shrinks the mortgage multiple by ~£40,000 at 4× income.
If none of those apply, sacrifice.
Do the maths on your £110,000 (not this generic one)
The numbers above assume a standard tax code, no bonus, no bank interest, no dividend income. Your real Adjusted Net Income depends on all of those.
- £100k Trap Calculator — enter your salary, pension %, bonus and other income. Returns your exact escape number, effective marginal rate, and tax saved.
- UK Take-Home Pay Calculator — full 2024/25 payslip breakdown at any salary.
- Salary Sacrifice Calculator — models employer NI rebate, different pension types (salary sacrifice / net pay / relief-at-source), and student loan interaction.
- £110,000 salary tables — precomputed at 0/5/10% pension rates.
FAQ
Is £110k gross or net-of-pension the ANI for the taper? Adjusted Net Income = gross salary − salary-sacrifice pension − relief-at-source grossed-up contributions − Gift Aid grossed-up + taxable savings + taxable dividends. So sacrificing £10,000 into a salary-sacrifice pension directly reduces ANI by £10,000. A SIPP contribution of £10,000 (relief at source) reduces ANI by £12,500 (grossed up by the 25% basic-rate uplift). Gift Aid works the same way as SIPP.
Does the 62% rate apply to Scottish taxpayers? No — Scotland has its own bands but the same £100k taper of the (UK-wide) Personal Allowance. Scottish higher-rate taxpayers hit an even worse effective marginal rate in the trap zone: 69.5% (42% + 21% taper effect + 2% NI + Scottish top-rate calculations). Our Scottish take-home calculator shows the exact figure.
Can I sacrifice retrospectively into last year’s PA? No. Salary sacrifice must reduce gross pay before the pay is received. A SIPP top-up made before 5 April can, however, reduce the just-ended tax year’s ANI via Self Assessment — this is the classic “March pension top-up” move used by higher-earning contractors and consultants to reclaim the trap.
What’s the payback period on a £110k sacrifice? Immediate. The tax refund is against the payslip, not next year’s return. Salary-sacrifice reduces the tax deducted at source in the same pay period — you see the effect on the next payslip.