Commission After Tax Calculator
Calculate exact take-home pay on UK sales commission, quarterly bonuses, and variable incentive pay for the 2026/27 tax year. Model side-by-side monthly payslips and uncover your 2% National Insurance UEL advantage.
Monthly Payslip Comparison: Normal vs Commission Month
See exact month-by-month PAYE, National Insurance, student loans, and take-home pay when variable sales commission is paid.
Normal: £3,750.00/month gross
Gross spike added to payslip
Statutory 2026/27 monthly plan
Workplace auto-enrolment
2% National Insurance Spike Visualizer (Pay Period Assessment)
Base Salary Payslip
Standard monthly payroll without commission
- Gross Salary
- £3,750.00
- Pension Contribution (5%)
- -£187.50
- PAYE Income Tax
- -£503.00
- Class 1 National Insurance
- -£201.20
- Student Loan (Plan)
- -£100.24
- Normal Take-Home
- £2,758.06
High-Earning Payslip
Base salary + £3,000.00 commission
- Total Gross Earnings
- £6,750.00
- Pension Contribution (5%)
- -£337.50
- PAYE Income Tax
- -£1,517.67
- Class 1 National Insurance
- -£295.80
- Student Loan
- -£356.74
- Spike Month Take-Home
- £4,242.30
Net Commission Kept
Exact cash retained from this commission spike
You Keep in Cash
£1,484.23
49.5% take-home (50.5% total deductions)
- PAYE Tax on Commission:
- -£1,014.67
- NI on Commission:
- -£94.60
- Pension Added:
- -£150.00
- Student Loan Repaid:
- -£256.50
- Total Commission Deductions:
- -£1,515.77
The 2% National Insurance Upper Earnings Limit (UEL) Spike Bonus
NI Spike Cash Saved
+£145.40
In the United Kingdom, National Insurance is strictly calculated per pay period (non-cumulative), unlike Income Tax which accumulates over the tax year. For monthly-paid sales professionals, this creates a significant statutory tax benefit:
Monthly UEL Threshold is £4,189.17
Earnings between £1,048 and £4,189 per month are taxed at 8% employee NI. Every single pound you earn above £4,189 in that specific monthly payslip drops to just 2% employee NI.
Immediate 6% NI Savings on Commission Spikes
Because commission spikes push your monthly gross earnings well beyond £4,189, that commission block is charged at only 2% NI instead of 8%. This saves you 6% in cash compared to receiving the identical sum spread evenly over 12 months!
Annual Combined Earnings Overview
Prefer to evaluate your total annual take-home across the full 2026/27 tax year? Compare annual Income Tax and employee NI before and after commission below:
Estimate tax on commission
Compare annual take-home before and after adding this employment income.
2026/27 annual estimate for England, Wales and Northern Ireland. It compares annual Income Tax and employee NI before and after the extra earnings; it does not model a payslip or pay-period NI.
Estimated amount retained from commission
£3,600.00
of £5,000.00 gross commission
- Extra Income Tax (annual difference)
- £1,000.00
- Extra employee NI (annual difference)
- £400.00
- Combined gross income
- £50,000.00
- Combined Income Tax
- £7,486.00
- Combined employee NI
- £2,994.40
Estimate excludes pension contributions, student-loan repayments and other adjustments. Actual PAYE depends on your tax code and year-to-date pay. A bonus or commission is not necessarily paid or taxed as a separate annual amount.
How Sales Commission and Variable Pay Are Taxed in the UK
In the United Kingdom, sales commission, executive bonuses, and performance incentives are treated as employment earnings under Section 62 of the Income Tax (Earnings and Pensions) Act 2003 (ITEPA 2003). There is no special "commission tax rate" in the UK; instead, commission is stacked on top of your standard base salary and taxed at your prevailing marginal rates.
However, because commission fluctuates dramatically from month to month, your payslip deductions behave differently depending on whether you are looking at Income Tax (PAYE) or Class 1 National Insurance:
1PAYE Income Tax Is Cumulative
Income Tax operates on a cumulative year-to-date basis under tax codes like 1257L. When you receive a significant commission payment, payroll software treats the spike as if you will earn that higher amount for the rest of the tax year. If that pushes your monthly taxable pay above £4,189.17, 40% higher rate tax will be deducted from that portion immediately.
2National Insurance Is Non-Cumulative
Class 1 Employee National Insurance is calculated per pay period in complete isolation under the Social Security Contributions and Benefits Act 1992 (SSCBA 1992). It never looks back at past months or forecasts the future. This difference creates a substantial cash advantage for sales professionals.
The 2% National Insurance Anomaly (Section 6 SSCBA 1992)
Under Section 6 of the Social Security Contributions and Benefits Act 1992 (SSCBA 1992), Class 1 Employee National Insurance is assessed strictly on a per-pay-period (non-cumulative) basis. This creates a statutory anomaly where sales professionals who receive lumpy commission payouts pay significantly less National Insurance than employees with identical annual earnings distributed evenly across twelve months.
The first £1,047.50 per month (£12,570 annually) incurs 0% National Insurance.
Earnings between £1,047.50 and £4,189.17 per month are charged at the standard 8% employee NI rate.
Every pound earned above £4,189.17 in that single monthly payslip drops to just 2% employee NI.
Real-World Proof: Lump-Sum Commission Cheque vs Equal Monthly Pay
Consider two sales representatives each earning £48,000 gross per year:
Representative A: £4,000 Every Month (Even Pay)
Every month, earnings are £4,000 — completely below the £4,189.17 UEL. National Insurance is: (£4,000 - £1,047.50) × 8% = £236.20/month.
Total Annual National Insurance: £2,834.40
Representative B: £3,000 Base + £12,000 Annual Commission Spike
Normal months (11): (£3,000 - £1,047.50) × 8% = £156.20/mo = £1,718.20.
Spike month (1): £15,000 gross pay. NI = £251.33 (8% on standard band) + (£15,000 - £4,189.17) × 2% (£216.22) = £467.55.
Total Annual National Insurance: £2,185.75
On-Target Earnings (OTE) Scenario Matrix (2026/27)
Sales compensation packages in the UK are typically structured around On-Target Earnings (OTE), combining a contractual base salary with variable commissions. The matrix below benchmarks three common sales career tiers under 2026/27 statutory PAYE rules:
£40,000 OTE
£30,000 Base + £10,000 Commission
- Personal Allowance:
- £12,570 (Full)
- Taxable Income:
- £27,430
- Income Tax (20% Basic):
- -£5,486.00
- Class 1 NI (Annual Basis):
- -£2,194.40
- Spike NI Savings:
- Up to +£498.65 saved
Tax Band: Entire income stays inside the 20% Basic Rate band (£50,270 limit). 0% higher rate tax.
£60,000 OTE
£40,000 Base + £20,000 Commission
- Higher Rate Slice:
- £9,730 over £50,270
- Basic Tax (20%):
- -£7,540.00
- Higher Tax (40%):
- -£3,892.00
- Class 1 NI:
- -£3,210.60
- HICBC Threshold:
- Clawback begins at £60k
Threshold Alert: Commission pushes £9,730 into 40% tax. Earnings above £60,000 begin 1% Child Benefit clawback per £200 earned.
£110,000 OTE
£60,000 Base + £50,000 Commission
- Personal Allowance Lost:
- -£5,000 (Taper Trap)
- Total Income Tax:
- -£33,432.00
- Class 1 NI:
- -£4,210.60
- Marginal Rate on £10k:
- 62% (60% IT + 2% NI)
- Child Benefit Status:
- 100% Clawed Back
Tax Trap Warning: The £10,000 earned between £100k and £110k incurs £6,200 in deductions. Sacrifice £10k into your pension to reclaim £6,200 in value!
Optimising Commission via Pension Salary Sacrifice
If a commission spike threatens to push your total taxable income into the £100k Tax Trap (60% marginal rate) or triggers the High Income Child Benefit Charge between £60,000 and £80,000, consider pension salary sacrifice.
By instructing your employer to pay a portion of your commission directly into your workplace pension, that sum completely bypasses 40% or 45% PAYE Income Tax, avoids 2% employee NI, avoids 9% student loan deductions, and preserves your tax-free Personal Allowance. See our dedicated guide on HMRC Salary Sacrifice Limits for detailed rules.
Frequently Asked Questions: UK Commission Tax
Clear answers based on official HMRC rules and statutory guidance.
Calculations strictly follow 2026/27 HMRC PAYE and Class 1 National Insurance statutory schedules. Payslip deductions may vary slightly based on non-standard tax codes, payroll rounding, or Scottish devolved rates.
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Visit Blog HubAnnual employment estimate
Use the stated tax code and gross pay to compare employment deductions in England, Wales and Northern Ireland. Monthly, weekly and daily figures divide an annual result; they do not reconstruct cumulative payroll.
The main pension input models salary sacrifice. Irregular pay, benefits in kind, multiple employments and a different pension method can change a real payslip. Use the Scottish tool for Scottish employment income.
Check the rules for your circumstances
Official guidance supports the rules described here; it does not approve or certify this calculator. Confirm dates, eligibility and unsupported cases before making a financial decision.