Take-home pay on GBP 120,000

## Full deduction breakdown — 2025-26

At £120,000, the personal allowance has been partially clawed back by the taper. Income is £20,000 above the £100,000 threshold, so £10,000 of personal allowance is lost (£1 lost for every £2 over £100k). The remaining personal allowance is £2,570.

| Item | Annual | Monthly | |------|-------:|--------:| | Gross salary | £120,000 | £10,000 | | Personal allowance (tapered) | −£2,570 | | | Taxable income | £117,430 | | | Income tax — basic rate (20% on £37,700) | −£7,540 | | | Income tax — higher rate (40% on £79,730) | −£31,892 | | | Total income tax | −£39,432 | −£3,286 | | Employee NI (8% on £37,700 + 2% on £69,730) | −£4,411 | −£368 | | Take-home pay | £76,157 | £6,346 |

Effective overall rate (tax + NI as a share of gross): 36.5%.

The 60% trap — what happened to the £20,000 between £100k and £120k

The jump from £100,000 take-home (£68,557) to £120,000 take-home (£76,157) is only £7,600 on a £20,000 gross increase — a retention rate of just 38%. This is the 60% trap in concrete numbers.

Each £2 above £100,000 removed £1 of personal allowance. That lost allowance — previously sheltering income from 40% tax — was itself taxed at 40%, creating an additional 20p cost per pound of taper. Combined with the standard 40% higher rate and 2% NI, the effective marginal rate across the entire £100,000–£120,000 slice was approximately 62%.

| Gross range | Effective marginal rate | Retained per £1 | |---|---:|---:| | Up to £50,270 | ~28% (20% + 8%) | 72p | | £50,271 – £100,000 | ~42% (40% + 2%) | 58p | | £100,001 – £120,000 | ~62% (60% effective + 2%) | 38p |

What happens above £125,140

Once income passes £125,140, the personal allowance is fully exhausted and the 60% trap ends. Above that point, marginal rates drop back to 47% (45% additional rate + 2% NI). This means marginal rates actually fall as income moves above £125,140 — a counterintuitive result of the taper design.

At £120,000, you are still £5,140 from that point. The next £5,140 of income still faces the 62% zone.

Salary sacrifice — the most efficient use in the UK tax system

At £120,000, every pound contributed to pension via salary sacrifice saves approximately 62p in combined tax and NI — the highest relief rate available to any earner below the additional-rate threshold. A £20,000 sacrifice to pension would bring adjusted net income down to £100,000, fully restoring the personal allowance.

| | Without sacrifice | With £20k sacrifice | |--|------------------:|--------------------:| | Adjusted net income | £120,000 | £100,000 | | Personal allowance | £2,570 | £12,570 | | Income tax | £39,432 | £27,432 | | Employee NI | £4,411 | £4,011 | | Take-home | £76,157 | £68,557 | | Pension contribution | £0 | £20,000 |

The £20,000 sacrifice costs £7,600 in take-home (£76,157 − £68,557). You contribute £20,000 to pension at a real cost of £7,600 — a 62% effective discount. The pension fund receives £20,000; your monthly pay reduces by £633. No other legitimate tax-planning decision at this income level comes close to this efficiency.

A smaller sacrifice targeting partial restoration is also viable: a £10,000 sacrifice would restore £5,000 of personal allowance and save at the 60% rate throughout, costing roughly £3,800 in take-home.

Best next step

Run the take-home pay calculator to confirm your position. Use the salary sacrifice calculator to model the cost of restoring some or all of your personal allowance through pension contributions. Read the guide to the 60% tax trap for a full explanation of the taper mechanics and planning options.