For employees where you haven't received a form P9(T) and for whom you don't have an unused P6 (see later sections):
carry forward the authorised tax code from their last year's form P11 to their new tax year's P11
apply the instructions from form P9X
If you have received a form P9(T) for an employee, or you have an unused P6 for them which arrived too late to use, follow the guidelines in the sections below.