If your ITIN wasn’t included on a U.S. federal tax return at least once for tax years 2018, 2019, and 2020, your ITIN will expire on December 31, 2021. ITINs with middle digits (the fourth and fifth positions) “70,” “71,” “72,” “73,” “74,” “75,” “76,” “77,” “78,” “79,” “80,” “81,” “82,” “83,” “84,” “85,” “86,” “87,” or “88” have expired. In addition, ITINs with middle digits “90,” “91,” “92,” “94,” “95,” “96,” “97,” “98,” or “99,” IF assigned before 2013, have expired.