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The calculator will tell you how much National Insurance needs to be paid by a director.

Using the calculator

If you鈥檙e a director

Check the amount of National Insurance contributions deducted from your pay is correct.

If you鈥檙e an employer

Use the calculator to work out how much National Insurance you need to deduct from a director鈥檚 pay.

If you鈥檙e a software developer

Check that the payroll software you鈥檙e developing is calculating National Insurance contributions for directors correctly.

Before you start

You鈥檒l need:

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