PAYE11070 - coding: codes: how they are used and calculated: suffix codes: form P9X

The use of suffixes allows HMRC to tell the employer to raise certain codes by standard amounts.

Form P9X gives employers a list of the changes needed from a common date. This form is sent to the employer with the Employer Annual pack. It tells employers which codes to amend by the standard amounts and for which codes they should expect a form P9(T) (or for larger employers a list or tape).

The use of suffixes means that you will often only have to review main source codes which have suffix T. The Annual / Budget Memos give full details.