How to file W-2s and W-3 through SSA Business Services Online

If you run payroll for your own S corporation, you file Forms W-2 and W-3 yourself once a year. Most small employers do this online through the Social Security Administration's Business Services Online (BSO) website. This guide covers registration, preparing the forms, submitting them, and fixing mistakes afterward.

The dates and figures below come from the IRS General Instructions for Forms W-2 and W-3 (2026) and SSA's BSO pages. They apply to 2026 Forms W-2 filed in early 2027. For other years, check the current instructions.

Key dates for 2026 Forms W-2

For 2026 Forms W-2 and W-3, two deadlines fall on the same day:

File with SSA: Copy A of each Form W-2 and Form W-3 are due by February 1, 2027. The date is the same whether you file on paper or electronically (IRS instructions).
Give to employees: Copies B, C, and 2 are due to your employees by February 1, 2027. A form that is properly addressed and mailed on or before that date counts as furnished.

If an employee leaves before December 31, 2026, you can give them their copies any time after employment ends, as long as it's no later than February 1, 2027. If an employee asks for their W-2, give it to them within 30 days of the request or within 30 days of the final wage payment, whichever is later.

To see these deadlines next to your 941, 940 and state dates, use the S-corp payroll calendar or the free payroll deadline calendar.

Do you have to e-file?

You must e-file Forms W-2 if you are required to file at least 10 information returns in a calendar year. To count, add the number of Forms W-2 to the number of other information returns you must file. If the total is at least 10, you must e-file all of them. If you're required to e-file and don't, you may owe a penalty (IRS instructions).

A very small S corporation may be under that number. SSA still encourages every employer to e-file. BSO checks your entries and creates Form W-3 for you, which saves a step.

If you e-file, do not also file the same forms on paper. If you do file on paper, the SSA accepts only the official red-ink forms or approved substitutes. Don't print Copy A from IRS.gov and mail it.

Step 1: Register for BSO early

On November 7, 2026, SSA started a new authorization process for BSO Electronic Wage Reporting. Every user must complete it before they can use BSO wage reporting services (SSA BSO). The affected services are W-2 and W-2c Online, Wage File Upload, Submission Status, Employer Report Status, AccuWage Online, and View Wage Report Name/SSN Errors.

If you used BSO before, you need to register again. The only exception is employers who took part in the January 2026 limited release and received a registration code by mail.

A Responsible Entity Officer (REO) must register the organization first. After that, other users can request access on its behalf. For a one-owner S corporation, the REO is usually the owner.

Here is how it works (SSA employer navigation):

Go to the BSO Welcome page.
In the Employers section, select "Sign in or create account for Electronic Wage Reporting."
Sign in or create an account with Login.gov or ID.me, and verify your identity. If you already have one of these accounts, use it. BSO user IDs and passwords are no longer used.
Accept the Privacy Act statement.
As the REO, select "Register as REO with Your Organization/EIN."
Enter your organization's details (listed below).
Wait for the registration code that SSA mails to you, then enter it to finish.

Information you'll need:

EIN
Organization name and organization type
Work email
Work mailing address (it must match the address the IRS has on file)
Work phone number associated with the EIN

The registration code can take 15 to 20 days to arrive. SSA says to allow at least 2 weeks to complete registration and recommends registering well ahead of the January deadline. You don't need to register again every year.

Step 2: Gather your year-end numbers

Before you open W-2 Online, get your payroll totals for the year in one place. Your W-2s have to agree with what you already reported to the IRS.

Name and EIN. Use the same employer name and EIN on Forms W-2 and W-3 that you used on Form 941 (IRS instructions).
Reconcile with Form 941. The 2026 totals in boxes 2, 3, 5, and 7 of Form W-3 should match the yearly totals from your four quarterly Forms 941. If they don't match, the IRS or SSA may contact you. Keep your reconciliation notes. Our guide on how to file Form 941 yourself covers the quarterly side.
Employee SSNs and names. Use each employee's name and number exactly as they appear on the Social Security card. SSA offers free online services to verify employee names and SSNs. See SSA's employer page.
Box checks. On each W-2 that shows an amount in box 3 or box 7, box 5 must equal or exceed the sum of boxes 3 and 7.

If you pay yourself wages through payroll, prepare your own W-2 with the same care as everyone else's. For background, see how to pay yourself from an S corporation.

Step 3: Create and submit W-2s in BSO

If you file 50 or fewer Forms W-2 at a time, you can create them online in BSO. Above 50, BSO's file upload feature may be the better option (IRS instructions).

Sign in to BSO with Login.gov or ID.me.
Open W-2 Online and start a new wage report for tax year 2026.
Enter your employer information. Enter the full EIN. An EIN may never be truncated on any form.
Enter one Form W-2 for each employee. Enter the full SSN, because SSNs can't be truncated on Copy A. If an employee has applied for a card but hasn't received the number yet, enter 000-00-0000 when creating forms online.
Save your work as you go. You can come back to it before you submit.
Review the Form W-3 that BSO generates from your W-2s. Compare its totals to your Form 941 totals.
Print copies for your employees, for your state if it requires them, and for your records. You can print employee copies before you submit to SSA.
Submit the report and save the confirmation.
Later, use Submission Status or Employer Report Status in BSO to make sure the report was processed.

You may truncate employee SSNs on the employee copies (for example, ***-**-1234). This is optional. Check with your state before truncating SSNs on copies you send to the state.

Where each copy goes

Copy	Who gets it	Notes
Copy A (Form W-2) and Form W-3	SSA	Submitted through BSO when you e-file
Copy 1	State, city, or local tax department	Only if required
Copies B, C, and 2	Employee	Due February 1, 2027, for 2026 forms
Copy of Copy A and Form W-3	Your records	Keep at least 4 years

Oklahoma employers should check current Oklahoma instructions for state filing of wage statements. Our Oklahoma withholding basics guide covers the state side of payroll.

If you need more time

Extensions are not automatic. You can request one 30-day extension to file Forms W-2 with SSA on Form 8809, Application for Extension of Time To File Information Returns. You must file it before the due date and sign it under penalties of perjury. The IRS grants these only in extraordinary circumstances or catastrophe, such as a fire or natural disaster that destroys the records you need (IRS instructions).

An extension to file with SSA does not extend the date to give copies to employees. That needs a separate request on Form 15397, Application for Extension of Time to Furnish Recipient Statements.

Rejections and corrections

Rejected reports. If SSA rejects your wage report, it will notify you by email or postal mail. Correct the report and resubmit it. Do not write "corrected" or "amended" on the resubmitted report.

Errors found later. Use Form W-2c to correct a W-2 you've already filed, such as a wrong name, SSN, or amount. File Form W-3c with it every time. BSO lets you create up to 25 Forms W-2c online at a time. File corrections as soon as you find the error. If you e-filed the original, the correction generally also has to be e-filed.

Small dollar errors. A safe harbor generally applies when no single amount is off by more than $100 and no single tax withheld amount is off by more than $25. Read the penalty section of the instructions for details.

Lost W-2. If an employee loses their W-2, give them a new copy marked "REISSUED STATEMENT." Don't send Copy A again.

Penalties for late or incorrect W-2s increased for returns required to be filed after December 31, 2026. Check the current instructions for amounts. Our guide to payroll tax penalties explains how to avoid them.

For questions about BSO or wage reporting, call SSA's Employer Reporting Service Center at 800-772-6270 (toll free).

Quick checklist

BSO registration finished with Login.gov or ID.me (start in November)
Registration code received and entered
Employee names and SSNs match their Social Security cards
Name and EIN match your Form 941
Form W-3 totals for boxes 2, 3, 5, and 7 match your four Forms 941
W-2s submitted to SSA by February 1, 2027
Copies B, C, and 2 given to employees by February 1, 2027
State copies filed if required
Copy A, Form W-3, and confirmation saved for at least 4 years

For everything else that happens at year end, see the year-end payroll checklist.

Where Selfroll fits

Selfroll is a free payroll calculator for small S-corporation owners. It does the math, keeps a deadline calendar, and fills in draft W-2 and W-3 copies that you can check against BSO. You enter and submit the forms in BSO, move any money yourself, and handle all filing yourself.

Sources

This guide is general information, not tax or legal advice. Check current IRS, SSA and state rules or ask a CPA.