Bonus Tax Calculator UK
Work out the take-home pay from a work bonus for 2026/27. Enter your salary and bonus to see the income tax and National Insurance deducted, your net bonus and the effective deduction rate.
Calculator
What this means
A bonus is added on top of your salary and taxed at your marginal rate — the rate on your highest slice of income. That means a bonus can be taxed at 20%, 40% or 45%, plus 8% or 2% employee National Insurance, and can briefly trigger the 60% effective rate between £100,000 and £125,140.
Frequently asked questions
Your bonus is taxed at your marginal rate on top of your salary. A basic-rate taxpayer typically loses 28% (20% income tax + 8% NI), while a higher-rate taxpayer loses around 42% (40% + 2%).
PAYE may deduct tax as if you earn that much every month, and a bonus can push part of your income into a higher band. Any over-deduction usually evens out over the tax year through cumulative PAYE.
You can't avoid it, but paying the bonus into your pension via salary sacrifice means it's taken before income tax and National Insurance, so you keep more of it. Speak to a qualified adviser before deciding.
Disclaimer
This calculator provides estimates for guidance only. It is not financial, legal or tax advice. Always check official sources or speak to a qualified professional before making decisions.
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