Guides
Understand what changes around £100k, why it happens, and what it means for your pay. Plain English, with the numbers worked through.
Start with the tax trap
Our first guide explains the change that catches many higher earners by surprise.
Income tax
The £100k tax trap explained with real numbers
Why the personal allowance taper leaves you keeping less of a pay rise, where it ends, and how pensions change the calculation.
Read guideMore topics to explore
More guides will follow. In the meantime, these calculators explain the essentials and let you explore your own situation.
Childcare
See the support at stake around the £100k income limit.
Open calculatorAdjusted net income
Work out which income and deductions count towards the threshold.
Open calculatorPensions
Compare a pension contribution with the change in take-home pay.
Open calculator
Put the explanation into numbers.
Enter your salary and pension to see what you keep and how a change could affect you.