On March 25, 2023, we updated how you access a BSO account for the following services:

  • Wage file upload
  • W-2/W-2C online
  • AccuWage online
  • Social Security Number Verification Service (SSNVS)
  • View wage report name/SSN errors

BSO users will need a Social Security online account. You can use your personal my Social Security account that was created before September 18, 2021, or an existing or credential.

If you do not have a Social Security online account or a or credential, you will need to create one from our Social Security Sign in page. This is a new requirement to access BSO employer services.

Once the credentialing and authentication process has been completed, current BSO User ID(s) will be associated with your new credential.

We appreciate your patience as we continue to enhance our system.

Register to Use Business Services Online

You must register to use Business Services Online – Social Security’s suite of services that allows you to file W-2/W-2Cs online and verify your employees’ names and Social Security numbers against our records.

Quick Reference Guides

File W-2s/W-2Cs Online

This service offers fast, free, and secure online W-2 filing options to CPAs, accountants, enrolled agents, and individuals who process W-2s (the Wage and Tax Statement) and W-2Cs (Statement of Corrected Income and Tax Amounts).

Verify Employees’ Social Security Numbers

The Social Security Number Verification Service allows employers to verify the names and Social Security numbers of current and former employees for wage reporting purposes only.

Social Security also offers the Consent Based Social Security Number Verification Service.

Helpful Hints to Electronic Filing NEW

Online Services for Employers, CPAs, Accountants, Enrolled Agents and Individuals

Important Information

Videos, Tutorials & Handbooks


Please note that as of March 25, 2023, the registration and log in process has changed. Please be patient as we work to update our site with changes to our videos, tutorials and handbooks that reflect this change.


      How to:


      How to:


Publications & Forms