Question: how often do you need to renew your itin?
Answer: All ITINs not used on a federal tax return at least once in the last three years will expire on December 31, 2019. Additionally, all ITINs issued before 2013 with middle digits of 83, 84, 85, 86, or 87 (Example: (9XX-83-XXXX) will also expire at the end of the year.