2 million ITINs set to expire in 2019. . .
Taxpayers who do not qualify for a Social Security number use an ITIN as a tax identification (ID) number for filing and administrative purposes. At the end of 2019, several ITINs, two million, in fact, are scheduled to expire. They are as follows:
- Any ITIN with middle digits 83, 84, 85, 86, or 87 will expire at the end of 2019.
- Any ITIN that was not used on a tax return in the past three years will also expire.