Any Individual Taxpayer Identification Numbers (ITIN) issued prior to 2013 or that haven’t been used for tax-years 2013, 2014 and 2015 will no longer be valid for use on a tax return as of January 1, 2017. The expired ITIN numbers are those starting with middle digits of 78 and 79 (Example: (9XX-78-XXXX)). The ITINs should be renewed before using on a tax return.
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