National Insurance Calculator

01Work

You are

After any salary sacrifice. Pension contributions under a net pay arrangement do not reduce NI.

National Insurance and student loans are worked out on each payslip, so this can change the yearly total slightly.

On your payslip. Most people are A.

Your National Insurance

£149.49

per month (category A, 2026/27)

Employee NI per year
£1,794
Employer NI per payslip
£374.95
Employer NI per year
£4,499
Class 4 per year
£0.00
Class 2 per year
£0.00
Total NI per year
£6,293
  • Class 1 is worked out on each month's pay on its own, using the monthly thresholds, so a bonus month can cost more NI than the same money spread over the year.
  • Employers may be able to cut their bill with the £10,500 Employment Allowance (not applied here).

Your National Insurance: £149.49 per month (category A, 2026/27)

Show the breakdown
Class 1 National Insurance, 2026/27
LinePer monthYear
Pay£2,916.67£35,000.00
Employee: 8% from £1,048.00 to £4,189.00, 2% above£149.49£1,793.88
Employer: 15% above £417.00£374.95£4,499.40
Total Class 1£524.44£6,293.28
Class 1 National Insurance a year
29%EMPLOYEE
  • Employee£1,79429%
  • Employer£4,49971%

Calculator by CalcBloc · rates from official sources, checked 2026-10-17.