Gross increase vs real increase
Your gross salary is the headline number. Your real increase is what appears in your bank after deductions.
- Income tax
- National Insurance
- Pension contributions
- Student loan repayments
UK pay rise guide
Salary Increase Calculator UK: What Will Your New Take-Home Pay Be?
A pay rise increases your gross salary, but your take-home pay usually rises by less because of income tax, National Insurance, pension deductions, and sometimes student loan repayments.
That is why a £5,000 pay rise does not mean £5,000 extra in your bank account.
Why higher bands matter
If your raise pushes some income into a higher tax band, only that slice is taxed at the higher rate. Your whole salary does not suddenly get taxed at the higher rate.
Example pay rise
Old salary: £30,000
New salary: £35,000
Gross raise: £5,000
The actual annual take-home increase will be lower after deductions.
What changes the result?
Your location, pension percentage, student loan plan, tax code, bonus structure, and salary sacrifice arrangements can all change the final number.
Best way to judge a pay rise
Do not only look at the annual salary. Compare monthly take-home pay before and after the raise, then decide whether the extra responsibility, commute, workload, or job change is worth it.
Quick decision checklist
Start with net payMonthly take-home is the useful number.
Check deductionsPension and loans can change the result.
Compare offersUse annual and monthly views.
Avoid band mythsOnly slices of income are taxed at higher rates.
Frequently asked questions
How do I calculate a salary increase?
Subtract your old salary from your new salary. To estimate take-home increase, account for tax, National Insurance, pension deductions, student loans, and other deductions.
Why is my take-home pay rise lower than my gross pay rise?
Because income tax, National Insurance, pension contributions, and student loan repayments may reduce the amount that reaches your bank account.
Does a pay rise move all my income into a higher tax band?
No. UK income tax is marginal, so only the portion above a threshold is taxed at the higher rate.
Do pension contributions reduce take-home pay?
Yes. Pension contributions usually reduce take-home pay, although they may also reduce taxable income depending on the pension arrangement.
Will student loan repayments increase after a pay rise?
They can. If your income rises above your student loan repayment threshold, repayments may increase with earnings.
Is a bonus taxed differently from salary?
A bonus is usually treated as employment income, but payroll timing can make the deductions look unusual on a payslip.
Should I compare annual or monthly pay?
Use both. Annual pay shows the headline increase, while monthly take-home pay shows the real budgeting impact.
Is a £5,000 raise actually worth £5,000?
No. The gross increase is £5,000, but your net increase will usually be lower after deductions.