Calculate employee Class 1 NI, employer NI, and combined Income Tax + NI deductions. Applies across England, Scotland, Wales, and Northern Ireland.
| Band | Earnings | Employee rate | Employer rate |
|---|---|---|---|
| Below Primary/Secondary Threshold | Up to £12,570 (employee) / £9,100 (employer) | 0% | 0% |
| Main / standard rate | £12,570 – £50,270 | 8% | 15% |
| Upper rate | Above £50,270 | 2% | 15% |
Note: employer NI applies from £9,100 (Secondary Threshold), while employee NI applies from £12,570 (Primary Threshold). The rates are identical across England, Scotland, Wales, and Northern Ireland — NI is not devolved.
National Insurance (NI) is a separate tax from Income Tax, charged on employment earnings. Employee Class 1 NI funds state benefits including the State Pension, NHS, and other contributory benefits. Employer Class 1 NI is an additional cost on top of your salary that your employer pays directly to HMRC.
The Primary Threshold (£12,570) — where employees start paying NI — is aligned with the Income Tax Personal Allowance. The Secondary Threshold (£9,100) — where employers start paying NI — is lower, meaning employers start paying NI on your salary at a lower level than you do.
Unlike personal pension contributions, salary sacrifice reduces your contractual gross salary before NI is calculated. This means you save 8% NI (or 2% above the UEL) on the sacrificed amount — a saving that personal pension contributions do not provide. Employers also save 15% NI on salary-sacrificed amounts.
Self-employed people pay Class 4 NI (9% on profits £12,570–£50,270; 2% above) plus a flat-rate Class 2 contribution. They do not pay Class 1 NI. Use the self-employed calculator for the complete picture.