UK PAYE Bonus Take-Home Calculator
See what a bonus is really worth after it's taxed at your marginal rate, and how much sacrificing it into your pension would save.
Your Bonus, After Tax
Cash Bonus You'll Actually Receive
£4,973
37.8% of the cash portion goes to tax and deductions
A UK bonus isn't withheld at a special flat rate — it's taxed as normal PAYE income, stacked on top of your salary at your marginal rate. On a £8,000 bonus, that comes to about £3,027 in combined Income Tax, National Insurance, and student loan repayment.
What Is the UK PAYE Bonus Take-Home Calculator?
Unlike the US, where employers withhold bonuses at a special flat federal rate, a UK bonus paid through PAYE is simply added to your normal pay and taxed at whatever marginal rate that combined amount falls into — there's no separate "bonus tax rate." That means a large bonus can push part of your income into a higher Income Tax band, into the Personal Allowance taper zone above £100,000, or further past your Student Loan repayment threshold, all at once. This calculator shows exactly what a bonus is really worth in cash after Income Tax, National Insurance, and student loan repayment are all applied at your marginal rate.
It also models "bonus sacrifice" — giving up some or all of a bonus in exchange for an equivalent employer pension contribution, the same mechanism as salary sacrifice. Because pension contributions made this way avoid Income Tax, National Insurance, and student loan repayment entirely, sacrificing a bonus is often one of the most tax-efficient things you can do with it, especially for higher earners.
UK PAYE Bonus Take-Home Calculator Formula
Bonus Tax = Deductions(Salary + Bonus − Pension) − Deductions(Salary Alone)
Net Cash Bonus = (Bonus − Sacrificed Amount) − Bonus Tax
How Is the UK PAYE Bonus Take-Home Calculator Calculated?
The tax attributable to the bonus is found by computing your total Income Tax, National Insurance, and student loan repayment with the bonus included, then subtracting what you'd owe on your salary alone — the difference is exactly what the bonus adds to your combined deductions, correctly reflecting that it's taxed at your marginal rate rather than in isolation. Any portion of the bonus you choose to sacrifice into your pension is removed from this calculation entirely before tax, National Insurance, and student loan repayment are applied.
This calculation uses the same 2026/27 HMRC Income Tax bands, National Insurance thresholds, and Student Loans Company repayment thresholds as the rest of this category's calculators.
UK PAYE Bonus Take-Home Calculator Example
A £45,000 salary (5% pension) receiving an £8,000 bonus with no sacrifice (Plan 2 student loan): the bonus is taxed at about £3,027, leaving a net cash bonus of roughly £4,973 — about 38% lost to combined deductions.
Sacrificing that entire £8,000 bonus into pension instead avoids all Income Tax, National Insurance, and student loan repayment on it — the full amount goes into your pension pot rather than a smaller net cash figure reaching your bank account.
A higher earner on £95,000 salary receiving a £15,000 bonus (no student loan) gets pushed into the £100,000 Personal Allowance taper zone — the bonus is taxed at roughly £7,350, nearly 49% of its cash value, since part of it falls into that especially high effective-rate band.
How to Use the UK PAYE Bonus Take-Home Calculator
Step 1
Enter your annual salary and your existing pension contribution percentage.
Step 2
Enter the bonus amount.
Step 3
Enter what percentage of the bonus you'd like to sacrifice into your pension, if any.
Step 4
Select your student loan plan.
Step 5
Review the net cash bonus you'll actually receive.
Benefits
- Correctly models UK bonuses as marginal-rate PAYE income, not a special flat withholding rate like in the US.
- Shows the exact tax cost of a bonus at your specific combined income level.
- Models bonus sacrifice into pension, a genuinely valuable tax-efficiency option many people don't consider.
- Flags when a bonus pushes you into the £100,000 Personal Allowance taper zone.
- Free, instant, and runs entirely in your browser.
Common UK PAYE Bonus Take-Home Calculator Scenarios
Scenario 1
Understanding what a bonus offer or bonus payment is really worth in cash.
Scenario 2
Deciding whether to take a bonus as cash or sacrifice some or all of it into your pension.
Scenario 3
Checking whether a bonus pushes your income past the £100,000 Personal Allowance taper.
Scenario 4
Planning around a known upcoming bonus payment for budgeting purposes.
Scenario 5
Comparing the after-tax value of a bonus against an equivalent base salary increase.
Understanding Your Result
The net cash bonus is genuinely what lands in your bank account, after every deduction that applies specifically because of the bonus — not the headline bonus figure your employer announced. The effective rate shown makes clear how much of the cash portion is actually lost to tax, which is often higher than people expect, especially for higher earners or anyone in the Personal Allowance taper zone.
If you sacrifice part of the bonus into your pension, that portion isn't reflected in "net cash bonus" at all — it's not lost, but it's not spendable cash either, since it goes straight into your pension pot instead.
Tips
- If you're a higher earner, especially anyone whose income approaches or exceeds £100,000, sacrificing some or all of a bonus into your pension can meaningfully improve its after-tax value.
- A bonus large enough to push you into the Personal Allowance taper zone can face an effective marginal rate near 60% on the affected portion — check this calculator before assuming a bonus is worth its full headline amount.
- Bonus sacrifice needs your employer's agreement and pension scheme to support it — check with your payroll or HR team before assuming it's available.
- If your bonus is paid in the same month as regular pay, your payslip may show an unusually large one-time deduction that period — this reconciles correctly over the tax year and isn't a separate, permanent higher rate.
- Consider your student loan plan threshold too — a bonus that pushes you further above it increases that specific deduction on top of Income Tax and National Insurance.
Common Mistakes
- Assuming UK bonuses are withheld at a special flat rate the way US bonuses often are — they're not; they're simply taxed at your marginal PAYE rate.
- Not considering bonus sacrifice as an option, especially for bonuses large enough to be taxed at 40% or higher.
- Forgetting that National Insurance and student loan repayment also apply to bonus income, not just Income Tax.
- Being surprised by an usually low take-home figure the month a bonus is paid, without realizing it reconciles correctly across the tax year.
- Not accounting for how a bonus can push total income into the Personal Allowance taper zone above £100,000.
Frequently Asked Questions
Is a UK bonus taxed at a special rate like it can be in the US?
No — there's no separate UK bonus withholding rate. A bonus is simply added to your pay for that period and taxed through the normal PAYE system at whatever marginal rate applies to your combined income.
What is bonus sacrifice?
It's the same mechanism as salary sacrifice, applied to a bonus payment — you give up some or all of the bonus in exchange for an equivalent employer pension contribution, avoiding Income Tax, National Insurance, and student loan repayment on the sacrificed portion entirely.
Does my employer have to offer bonus sacrifice?
No — it depends on whether your employer's pension scheme and payroll process support it. Check with your HR or payroll team if you're interested in sacrificing a bonus.
Why does my payslip look so different the month I get a bonus?
PAYE calculates tax cumulatively across the tax year, so a large one-time bonus can temporarily push that month's withholding much higher — this is normal and reconciles correctly, it doesn't mean you're permanently taxed at a higher rate.
Does National Insurance apply to bonuses?
Yes, at the same rates as regular salary — 8% between £12,570 and £50,270 of combined income, 2% above that, calculated on your total pay including the bonus.
Does a bonus affect my student loan repayment?
Yes — it's added to your income for that calculation, so a bonus increases the amount above your plan's threshold that's subject to the 9% (or 6% for Postgraduate Loan) repayment rate.
What happens if my bonus pushes me above £100,000?
Any portion of your adjusted income above £100,000 starts reducing your Personal Allowance by £1 for every £2 over that threshold, which can create an effective marginal rate approaching 60% on that specific slice of income — sacrificing enough of the bonus into pension can help you stay under this threshold.
Can I sacrifice only part of my bonus?
Yes — enter any percentage from 0% (take it all as cash) to 100% (sacrifice all of it), and the calculator will split the bonus accordingly between cash and pension.
Is bonus sacrifice always the better choice?
Not necessarily — it depends on whether you value the immediate cash more than the tax-efficient pension growth, and pension funds generally can't be accessed until a minimum retirement age. It's a genuine tax efficiency, not automatically the right choice for everyone.
Does this calculator work for a bonus paid in a different tax year than my salary changes?
It assumes the bonus and salary are both part of the same tax year's income — if your salary changes partway through the year, use your salary at the time the bonus is paid for the most accurate estimate.
Is Scottish Income Tax different for bonuses?
Yes — this calculator uses England/Wales/Northern Ireland Income Tax rates; Scottish Income Tax uses different bands, which would change the Income Tax portion of this calculation (though not National Insurance or student loan repayment).
Can I share my bonus take-home result as an image?
Yes — tap Share and, on supported devices, your result is shared as a branded image card, not just a text link.
References
Important Information
This calculator provides estimates for informational purposes only and is not tax, legal, or financial advice. Uses confirmed 2026/27 HMRC Income Tax bands (England/Wales/Northern Ireland), National Insurance thresholds, and Student Loans Company repayment thresholds; assumes your employer supports bonus sacrifice if used. Confirm your specific situation with a qualified tax professional or HMRC.
Last updated: August 2026