NOTE
SSA is no longer accepting magnetic media. Please use the file upload process currently available with Social Security Number Verification Service (SSNVS).
Go directly to Business Services Online to register or login to the Social Security Number Verification Service.
![Business Services Online](images/bsoLogin.jpg)
Business Services Online (BSO)
Hours of Operation
Monday - Friday: 5 AM - 1 AM ET
Saturday: 5 AM - 11 PM ET
Sunday: 8 AM - 11:30 PM ET
Saturday: 5 AM - 11 PM ET
Sunday: 8 AM - 11:30 PM ET
About W-2 Filing
- Electronic W-2/W-2c Filing Handbook
- Vendor List
- Helpful Government Resources
- FIRE (1099) Filing Information Returns Electronically
- Employer W-2 Filing
W-2 Filing Assistance
- Checklist for W-2 Online Filing
- AccuWage
- Specifications for Filing Forms W-2 Electronically (EFW2)
- Specifications for Filing Forms W-2C Electronically (EFW2C)
- Paper Forms W-2 & Instructions
- If You're Self-Employed
- Frequently Asked Questions
- Ask an Expert
- Tax Forums and Speaking Engagements
- Vendor List
- E-Verify - U.S. Citizenship and Immigration Services
- Customer Support
- Employer Feedback