Yes, if your software allows you to send a sample of P14's and a P35 as a test HM Revenue and Customs (HMRC) will check them against our quality standards and tell you about any mistakes. This service is aimed at large employers who may find it convenient to check for errors before making a complete return.
If your test submission passes HMRC quality checks and you receive an acceptance message and email acknowledgment you must ensure that you send a Live return. If you are not sure if you have sent a test or live return, please telephone the HMRC Online Services Helpdesk to check the position. This is particularly important when you need to meet a statutory filing deadline.