IRS says
Q1: Which ITINs will expire?
A1: ITINs that have not been used on a tax return for Tax Year 2015, Tax Year 2016 or Tax Year 2017 will expire December 31, 2018. Additionally, ITINs with middle digits of 73, 74, 75, 76, 77, 81 or 82 (e.g. 9NN-73-NNNN) will also expire at the end of the year.
Q2: Which ITINs will NOT expire?
A2: Any ITIN that does...
