For every tax debt, there is a Collection Statute Expiration Date. The CDED determines the amount of time the IRS can continue to pursue payment for taxes owed in previous years. The statute states that the IRS cannot pursue collection on a tax debt for longer than 10​ ​years​ ​from the original tax assessment date, which corresponds with the month, year, and date the return was filed.

The IRS can change this date, but only under certain conditions. If you file an appeal or make an offer-in-compromise, the deadline may be extended.