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IRS Final Rules Permit Truncated TTINs on W-2s

July 8, 2019

In its continuing effort to reduce identity theft, the U.S. Internal Revenue Service (IRS) issued final regulations that permit employers to use truncated taxpayer identification numbers (TTIN) on Forms W-2, Wage and Tax Statement, issued to employees (T.D. 9861). The regulations finalize proposed rules issued in September 2017 with no substantive changes in response to comments (REG-105004-16). Permissible TTINs are Social Security numbers (SSN) with the first five digits of the nine-digit number replaced with asterisks or XXXs in the following formats: ***-**-1234 or XXX-XX-1234. Read more at The Tax Adviser.