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 ana directors’director’s pay.

If you’re a software developer

Check that the payroll software you’re developing is calculating National Insurance contributions for director’sdirectors correctly.

Before you start

You’ll need:

• the National Insurance contributions category letter
• the start date of the directors’director’s role
• the directors’director’s total pay to date
• contributions already made by the director and employer

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