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How to verify Social Security numbers

This guide explains how employers can use the Social Security Administration’s Social Security Number Verification Service (SSNVS) to verify employees’ Social Security numbers and avoid tax penalties for incorrect reporting.

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by Alice Gilman

To avoid tax penalties for incorrectly reporting employees’ Social Security Numbers (SSNs) on Forms W-2, Wage and Tax Statement, an employer should verify that each employee’s name and SSN matches by using the Social Security Administration’s (SSA’s) free, online matching service — the Social Security Number Verification Service (SSNVS). Prior to using SSNVS, an employer must register with the SSA’s Business Services Online (BSO) suite of services, obtain a user identification number and choose a password.

Sign up today to get:

  • Step 1: Provide identifying information to the SSA
  • Step 2: Register to use SSNVS
  • Step 3: Request access to SSNVS
  • Step 4: Activate access and log on to SSNVS
  • Step 5: Use SSNVS to verify SSNs

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