How is a UK bonus taxed in 2026/27?

As ordinary employment income through PAYE. No special "bonus tax rate" - the bonus stacks on top of your annual salary and is taxed at marginal rates. Many payroll systems withhold extra tax in the bonus month under cumulative PAYE - this evens out across the year so annual tax is the same regardless of when paid.

Why does my bonus payslip show extreme tax?

Cumulative PAYE estimates your total annual income from year-to-date figures. A large one-off bonus in month 6 looks to PAYE like you are now earning double, so it withholds at the higher rate. Over remaining months the system gradually corrects the over-withholding. Annual total comes out right.

Should I sacrifice my bonus into pension?

For most higher-rate taxpayers, yes - the marginal effective rate on bonus income can reach 42% (basic higher-rate band), 54% (HICBC zone), or 62% (£100k taper). Salary sacrifice into pension saves all of these. Net cost of £1 in pension: ~£0.46 for HICBC family, ~£0.38 in £100k taper, ~£0.58 for higher-rate.

What is the £100k bonus trap?

A bonus pushing your income into £100,000-£125,140 triggers Personal Allowance taper - PA reduces £1 per £2 earned over £100k. Real marginal rate: 62% (40% IT + 2% NI + 20% PA loss). A £10,000 bonus in this zone produces only £3,800 net. Pension sacrifice the entire bonus to escape the cliff while gaining 62% effective relief.

Can I defer a bonus to next tax year?

Only if your employer agrees and the deferral is documented before the bonus is "earned" (typically before the performance period ends). Once a bonus is contractually due, you cannot defer it for tax purposes - HMRC treats it as earned in the year it became payable. Discuss with HR before year-end if bonus would push you into worse tax band.

How does HICBC affect bonus tax?

If your adjusted net income enters the £60,000-£80,000 HICBC taper after bonus, each additional pound triggers Child Benefit clawback. For 2 children: 11.7% extra marginal. Stacked with 40% IT + 2% NI = 53.7% effective rate. Pension sacrifice to drop adjusted net income below £60,000 eliminates the charge while gaining 54% relief.

What about bonus paid as shares (RSU, share schemes)?

RSU vesting is taxed at marginal rate via PAYE on the vesting market value. SAYE/SIP shares: different treatment - see our RSU + options guide . CSOP/EMI options can give CGT treatment instead of IT - significantly more tax-efficient at sale.

When does my bonus get sent to HMRC?

Same day as your salary payment via Real Time Information (RTI). Income Tax + NI withheld at source. No need to declare separately unless you cross Self Assessment thresholds (£150k+ income, additional income streams). Most PAYE bonus earners need do nothing else.

Can I split bonus payment between tax years?

Only if contractually structured as such before earning. "Half in March, half in April" works only if the bonus is genuinely two separate contractual entitlements. HMRC reviews substance over form - artificial splits to manage tax bands are often challenged. Document the business reason for any split.

Will my bonus affect my mortgage application?

Yes - most lenders treat bonus income as 50-100% counted toward affordability, evidenced by 2-3 years of P60 + payslips. Sustained bonus history strengthens application. One-off bonuses count less. Some lenders (especially specialist + private banks) count bonus income at 100%. Helpful for high-income tech + finance workers.

Practical guide

UK Bonus Tax Planning Complete Guide 2026/27

How UK bonuses are taxed in 2026/27, the £100k taper trap to avoid, HICBC interaction, pension sacrifice strategy, and the typical effective tax rate by income band.

Bonus taxation: the same as salary, but timing matters

Bonus is taxed as employment income at your marginal rate. There is no special "bonus tax rate". The bonus simply stacks on top of your annual salary and pushes you up the tax bands accordingly.

Effective marginal rate by income zone

Income band	Marginal rate	Bonus £1k net
£12,570-£50,270 (basic)	28%	£720
£50,270-£60,000 (higher)	42%	£580
£60,000-£80,000 (HICBC zone, 2 kids)	53.7%	£463
£80,000-£100,000 (higher post-HICBC)	42%	£580
£100,000-£125,140 (PA taper)	62%	£380
£125,140+ (additional)	47%	£530

The pension sacrifice strategy

For higher-rate + HICBC-affected + £100k taper bonus situations, salary sacrificing the bonus directly into pension is dramatically tax-efficient:

£100k taper zone: £1 net cash from bonus = £0.38. £1 sacrificed into pension = £1 (62% relief). Pension wins 2.6×.
HICBC family (2 kids) in £60-80k: £1 net cash = £0.46. £1 pension = £1. Pension wins 2.2×.
Higher rate: £1 net cash = £0.58. £1 pension = £1. Pension wins 1.7×.

If you don\'t need the cash immediately, sacrifice the bonus. The locked-in pension wealth is worth materially more than the post-tax cash.

Worked example: £15,000 bonus on £95,000 salary

Without pension sacrifice:

Total income: £110,000 (in £100k taper)
£5,000 of bonus in £100,000-£105,000 band at 62% marginal: nets £1,900
£10,000 of bonus in £95,000-£105,000 partly in 42%/62% bands: nets ~£5,400
Total net bonus: ~£7,300 (49% effective marginal)

With £15,000 pension sacrifice:

Adjusted net income: £95,000 (avoid taper)
£15,000 in pension
Net cash reduction: ~£7,700 (the £7,300 net you would have had)
Pension wealth gained: £15,000
Effective benefit: nearly 2x cash retention

Frequently asked questions

How is a UK bonus taxed in 2026/27?
As ordinary employment income through PAYE. No special "bonus tax rate" - the bonus stacks on top of your annual salary and is taxed at marginal rates. Many payroll systems withhold extra tax in the bonus month under cumulative PAYE - this evens out across the year so annual tax is the same regardless of when paid.
Why does my bonus payslip show extreme tax?
Cumulative PAYE estimates your total annual income from year-to-date figures. A large one-off bonus in month 6 looks to PAYE like you are now earning double, so it withholds at the higher rate. Over remaining months the system gradually corrects the over-withholding. Annual total comes out right.
Should I sacrifice my bonus into pension?
For most higher-rate taxpayers, yes - the marginal effective rate on bonus income can reach 42% (basic higher-rate band), 54% (HICBC zone), or 62% (£100k taper). Salary sacrifice into pension saves all of these. Net cost of £1 in pension: ~£0.46 for HICBC family, ~£0.38 in £100k taper, ~£0.58 for higher-rate.
What is the £100k bonus trap?
A bonus pushing your income into £100,000-£125,140 triggers Personal Allowance taper - PA reduces £1 per £2 earned over £100k. Real marginal rate: 62% (40% IT + 2% NI + 20% PA loss). A £10,000 bonus in this zone produces only £3,800 net. Pension sacrifice the entire bonus to escape the cliff while gaining 62% effective relief.
Can I defer a bonus to next tax year?
Only if your employer agrees and the deferral is documented before the bonus is "earned" (typically before the performance period ends). Once a bonus is contractually due, you cannot defer it for tax purposes - HMRC treats it as earned in the year it became payable. Discuss with HR before year-end if bonus would push you into worse tax band.
How does HICBC affect bonus tax?
If your adjusted net income enters the £60,000-£80,000 HICBC taper after bonus, each additional pound triggers Child Benefit clawback. For 2 children: 11.7% extra marginal. Stacked with 40% IT + 2% NI = 53.7% effective rate. Pension sacrifice to drop adjusted net income below £60,000 eliminates the charge while gaining 54% relief.
What about bonus paid as shares (RSU, share schemes)?
RSU vesting is taxed at marginal rate via PAYE on the vesting market value. SAYE/SIP shares: different treatment - see our <a href="/uk-stock-options-rsu-tax-complete-2026-27" class="underline">RSU + options guide</a>. CSOP/EMI options can give CGT treatment instead of IT - significantly more tax-efficient at sale.
When does my bonus get sent to HMRC?
Same day as your salary payment via Real Time Information (RTI). Income Tax + NI withheld at source. No need to declare separately unless you cross Self Assessment thresholds (£150k+ income, additional income streams). Most PAYE bonus earners need do nothing else.
Can I split bonus payment between tax years?
Only if contractually structured as such before earning. "Half in March, half in April" works only if the bonus is genuinely two separate contractual entitlements. HMRC reviews substance over form - artificial splits to manage tax bands are often challenged. Document the business reason for any split.
Will my bonus affect my mortgage application?
Yes - most lenders treat bonus income as 50-100% counted toward affordability, evidenced by 2-3 years of P60 + payslips. Sustained bonus history strengthens application. One-off bonuses count less. Some lenders (especially specialist + private banks) count bonus income at 100%. Helpful for high-income tech + finance workers.