Employers can file Form 941-X up to three years after the original payroll tax due date, which is normally April 15.Previously, employers could request prepayment from the IRS by filing Form 7200 before the end of the third quarter, but that alternative is no longer available. Amended payroll tax returns could be based on approaches years after the initial filing deadline of the return, so you still have time. Some tax advisors are misstating the rules related to the deadlines for employee retention credit (ERC) applications. In fact, it's important to know the deadline for the employee retention tax credit so that companies can get the proper benefits of the employee retention tax credit.