Guidance
Work out a director's National Insurance contributions
Use this calculator to work out a director's National Insurance contributions for the current tax year.
The calculator will tell you how much National Insurance needs to be paid by a director.
Using the calculator
If you’re a director
Check the amount of National Insurance contributions deducted from your pay is correct.
If you’re an employer
Use the calculator to work out how much National Insurance you need to deduct from a director’s pay.
If you’re a software developer
Check that the payroll software you’re developing is calculating National Insurance contributions for directors correctly.
Before you start
This calculator is only for the current tax year.
You’ll need:
- the National Insurance contributions category letter
- the start date of the director’s role
- the director’s total pay to date
- contributions already made by the director and employer