UK £100k Tax Trap Calculator
UK £100k Tax Trap Calculator
Escape the 60% marginal tax rate with pension optimization
Your total salary before tax and deductions
Annual bonus, dividends, or other taxable income
Your current pension contribution as % of salary (salary sacrifice)
Tax Trap Status
In the 60% Tax Trap Zone
You're paying £900 extra in tax due to Personal Allowance loss
Your Current Tax Position
Total Income
£110,000
Personal Allowance
£10,320
-£2,250 lost
Marginal Rate
62%
Income Tax
£29,682
National Insurance
£4,101
Current Pension
£5,500
Take-Home Pay
£70,717
Effective tax rate: 30.7%
Recommended Optimization
Increase your pension contribution to £10,000 (9.1% of salary) to restore your full Personal Allowance.
Annual Tax Saved
£2,340
Extra to Pension
£4,500
New Take-Home
£68,557
For every £1 less take-home, you get £2.08 in your pension
Before vs After Optimization
| Current | Optimized | Change | |
|---|---|---|---|
| Gross Salary | £110,000 | £110,000 | £0 |
| Pension Contribution | £5,500 | £10,000 | +£4,500 |
| Taxable Income | £104,500 | £100,000 | -£4,500 |
| Personal Allowance | £10,320 | £12,570 | +£2,250 |
| Income Tax | £29,682 | £27,432 | -£2,250 |
| National Insurance | £4,101 | £4,011 | -£90 |
| Take-Home Pay | £70,717 | £68,557 | -£2,160 |
Income Tax Breakdown (England/Wales/NI)
Basic Rate(20%)
on £39,950£7,990
Higher Rate(40%)
on £54,229£21,692
Understanding the £100k Tax Trap When your income exceeds £100,000, you lose £1 of Personal Allowance for every £2 earned above this threshold. This creates an effective marginal tax rate of up to 62% (40% income tax + 2% NI + 20% from PA loss) on income between £100k and £125,140. Pension contributions via salary sacrifice reduce your taxable income and can restore your Personal Allowance.