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Work out director’s National Insurance contributions

You can find the category letter on a payslip. It may be called NI category or NIC table letter.

The National Insurance category letters are:
A, B, C, D, E, F, H, I, J, K, L, M, N, S, V, Z.

You can get information about National Insurance category letters (opens in new tab).

Only enter a letter, for example A.
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