PAYE54235 | Employer returns: regulation 80 determinations: effect on employees
From HM Revenue & Customs · PAYE Manual
Where additional payments are discovered and the tax is collected from the employer and a determination has become final, take the following action.
Details of the additional pay and tax should be sent to the employees Processing Office on form P383. For each employee give
Details of the further earnings
Instruct the employees office to make necessary adjustments for PAYE employees on NPS and issue a revised Tax Calculation P800
Or for SA taxpayers
Make an enquiry into the return and amend the assessment if necessary, taking account of the fact that a credit for the tax is strictly due
For cases working with Employer Compliance or within PT Operations, where the tax recovered is due to an under deduction (the amount of pay does not change), take the following action
Notify the employee’s office as follows
For PAYE employees, advise the office to give a credit for the tax that should have been deducted within NPS. This may result in a P800 being issued
For SA employees, make an enquiry into the return and amend the assessment if necessary, taking account of the fact that a credit for the tax is strictly due
Note that time limits apply for enquiries into assessments. Also that a Regulation 185(5) and 188(3) require you to limit the amount of credit you allow to prevent an overpayment, so as the employee is not repaid tax they didn’t pay.
Watch for any case where EIS accepts a lower equitable tax figure and only give credit for the employee’s share of this reduced figure.