UK Take-Home Pay: Income Tax and National Insurance Explained

Two separate deductions determine UK take-home pay: Income Tax and National Insurance (NI). Understanding both is key to knowing what a salary actually means in your pocket.

Income Tax Bands

Most UK taxpayers get a tax-free Personal Allowance before Income Tax applies, then pay a Basic Rate (20%) on earnings above that, rising to a Higher Rate (40%) and an Additional Rate (45%) on higher income bands. Scotland has its own slightly different band structure.

National Insurance

NI is a separate deduction that funds state benefits and the State Pension, charged as a percentage of earnings above a threshold. For most employees this sits in the low-to-mid teens percentage-wise, layering on top of Income Tax rather than replacing it.

Combined Effective Rate

For a typical full-time salary, Income Tax and NI combined often land in the mid-to-high 20% range as an effective rate — noticeably more than the 20% Basic Rate alone might suggest, which is a common source of confusion when people first check their payslip.

What Our Calculator Estimates

Our UK calculator applies a single combined effective rate approximating Income Tax plus National Insurance for a typical salary. Your exact figure depends on your tax code, allowances, and whether you're in Scotland.

Check your own numbers on our United Kingdom salary calculator.