The agreement will continue until you or HMRC have to terminate it or you have to modify it. You do not have to renew the PPE every tax year. tags: HMRC Tax Agent Blog, National Insurance, P11D, PAYE Settlement Agreement. If an employer does not have their PPE reference number or is not sure whether to take action, they should contact the PPE team on 0300 322 7077. . You can pay in cash or by cheque at your branch. You must use the PAYE Settlement Agreement (PSA) pay slip sent to you by HM Revenue and Customs (HMRC). There is no legal deadline for submitting tax and NIC calculations due to HMRC under a PSA. You must pay the tax and network interface card due under a PSA no later than October 22 after the end of the tax year (or no later than October 19).