How to calculate your net salary in the UK
The basic calculation is simple in principle: start with gross salary, calculate the deductions that apply to you, then subtract them. The detail comes from tax bands, National Insurance thresholds, pension treatment and loan rules.
The gross-to-net calculation
For a standard employee, net salary can be thought of as gross pay minus the deductions that apply to that pay period.
Apply your available Personal Allowance, then tax taxable income through the relevant bands. Scottish taxpayers use different Income Tax bands from England, Wales and Northern Ireland.
Employee Class 1 National Insurance is calculated separately from Income Tax using NI thresholds and rates.
Salary sacrifice, net pay and relief at source do not all affect taxable pay, NI and student-loan earnings in the same way. NetSlip lets you choose the method.
If your earnings exceed the threshold for your repayment plan, the relevant repayment is deducted. Postgraduate Loans can apply alongside an undergraduate plan.
Why a calculator is safer than a single percentage
There is no universal “tax percentage” that converts every gross salary into net pay. UK Income Tax is banded, National Insurance is separate, the Personal Allowance can taper above £100,000, Scotland has different Income Tax bands, and deductions such as pensions and student loans depend on the person.
Use the NetSlip UK net salary calculator for the estimate, then open the result breakdown to see what was deducted. For source thresholds, use the rates and sources page.
Common questions
Net salary is gross salary minus the deductions that apply, such as Income Tax, National Insurance, pension contributions and student loan repayments.
Not reliably. Income Tax is banded and National Insurance and other deductions are separate, so a flat percentage can be misleading.
National Insurance is UK-wide, but Scottish employment income uses separate Scottish Income Tax bands.