 In some instances a post-dated cheque may be retained by the bank and paid on the due date if that date is only a few days away.Some UK organisations do not accept post-dated cheques as well as some Government Departments, while paying income tax or voluntary National Insurance may only be done with post-dated cheques with permission from HM Revenue and Customs.In the United States, national banks are permitted to pay checks even though payment occurs prior to the date of the check.