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The £100,000 Tax Trap — UK Tax Calculator

UK Tax Calculator

The £100,000 Tax Trapfocused tool2026/27 · Take-home & tax
Decisions

The £100,000 Tax Trap

For earners near £100,000: see the 60% marginal rate, the childcare you stand to lose, and the pension contribution that takes you back under the line.

Your adjusted net income

£70,000

£30,000 below the £100k cliff

Your adjusted net income is £70,000 — below £100,000, so you're clear of the 60% trap and (if you have children) keep your free childcare hours. The chart below shows where the cliff begins.

Marginal rate across the £100k zone
you ≈ 42%
Combined marginal rate (income tax + NI) on the next £1. The amber band is the 60% trap — getting below £100k restores your personal allowance.

Common questions

Quick answers for the 2025/26 tax year. For guidance only — not financial advice.