Pay Rise Salary Details
📊 Pay Rise Impact Breakdown
Receiving a pay rise is an exciting accomplishment, but calculating how much extra cash will actually land in your bank account requires understanding UK marginal tax bands.
Because a pay rise is stacked on top of your existing salary, it is taxed entirely at your highest marginal deduction rate.
⚙️ Marginal Tax Bands & Pay Rise Retention Rules for 2026/27
1. Statutory Deduction Bands
- Basic Rate Earner (Salary under £50,270): 20% Income Tax + 8% Class 1 NI = 28% marginal tax (you keep 72p per £1 pay rise).
- Higher Rate Earner (Salary £50,271 to £100,000): 40% Income Tax + 2% Class 1 NI = 42% marginal tax (you keep 58p per £1 pay rise).
- Personal Allowance Taper Zone (£100,000 to £125,140): 60% Income Tax + 2% Class 1 NI = 62% marginal tax (you keep 38p per £1 pay rise).
2. Student Loan Impact on Pay Rises
- Plan 1 / 2 / 4 / 5 Student Loan: Adds an extra 9% deduction to all earnings above threshold.
- Example: A higher-rate earner with a Plan 2 student loan faces a 51% marginal deduction (40% tax + 2% NI + 9% student loan), retaining only 49p per £1 pay rise.
📊 Practical Pay Rise Worked Examples
Below are two worked calculation examples illustrating net pay rise retention:
- Current Gross Salary: **£35,000.00 / year**
- Gross Annual Pay Rise: **£3,000.00**
- Marginal Deduction Rate: 20% Income Tax + 8% Class 1 NI = **28%**
Calculation: Total tax deductions = 28% × £3,000.00 = £840.00. Net take-home increase = £2,160.00.
- Current Gross Salary: **£55,000.00 / year**
- Gross Annual Pay Rise: **£5,000.00**
- Marginal Deduction Rate: 40% Income Tax + 2% Class 1 NI = **42%**
Calculation: Total tax deductions = 42% × £5,000.00 = £2,100.00. Net take-home increase = £2,900.00.
📑 Common Pitfalls & Tax Code Traps
- Crossing the £50,270 Threshold (The 40% Tax Shift): If a £5,000 pay rise takes your salary from £48,000 to £53,000, the portion of your pay rise below £50,270 is taxed at 28%, while the portion above £50,270 is taxed at 42%.
- Forgetting Student Loan Repayments: Many employees forget that earnings from a pay rise incur a 9% student loan repayment, turning a 28% basic tax deduction into a 37% total deduction.
- Redirecting Pay Rises into Pension Salary Sacrifice: If you don’t urgently need the extra cash flow, redirecting 100% of a pay rise into your workplace pension via salary sacrifice avoids Income Tax, NI, and Student Loans, growing your retirement fund tax-free.
❓ Frequently Asked Questions (FAQ)
The UK operates a progressive tax system. Crossing a tax threshold (such as £50,270) means ONLY the earnings exceeding the threshold are taxed at the higher 40% rate. Your earnings below £50,270 remain taxed at basic rates.
As a basic rate taxpayer (without a student loan), 20% Income Tax and 8% National Insurance are deducted. You keep **£720.00 (72%)** of a £1,000 pay rise.
Yes. A pay rise taking household income over £60,000 triggers the High Income Child Benefit Charge (HICBC). A pay rise taking individual net income over £100,000 eliminates 30 free childcare hours and Tax-Free Childcare.
Yes. Because workplace pension contributions are calculated as a percentage of your salary (e.g. 5% employee + 3% employer), a pay rise automatically increases your monthly pension contributions.