File Form W-2C Online for 2026 Tax Year

What Is Form W-2C?

Form W-2C (Corrected Wage and Tax Statement) lets employers correct errors such as wage amounts, tax withheld, employee identification information, etc., or to provide new information on previously filed wage tax statements (Form W-2, W-2AS, W-2CM, W-2GU, W-2VI). The corrected form is filed with the SSA and furnished to the employee. It can be used throughout the year as needed.

When filing Form W-2C, employers must also file one transmittal Form W-3C per corrected year if filed by paper. Form W‑3C is NOT required when you eFile W‑2C forms or send corrected copies only to employees or states.

Who Must File Form W-2C?

Any employers who filed W-2 forms or related wage statements with the SSA and discovered an error must file Form W-2C to correct that error on previously filed forms with the SSA.

What Type of Errors can be Corrected on Form W-2C?

Form W-2C can be used to correct the following issues on a previously filed W-2 return:

IRS Form W-2 reports the following information:

• Employee details such as name or Social Security number (SSN)
• Employer details such as company name or EIN
• Wages, tips, and other income
• Federal income tax withheld
• Social Security and Medicare wages and taxes
• Allocated tips
• Dependent care benefits
• Nonqualified plans and other compensation-related amounts
• Box-specific entries
• State and local wage and tax information
• Incorrect tax year and other incorrect entries previously reported on Form W-2

What’s New in Form W-2C for the 2026 Tax Year?

For the 2026 tax year, W-2C has been updated to reflect changes in Form W-2. There is change in the box structure, including the split of Box 14 into Box 14a (Other) and new Box 14b (Treasury Tipped Occupation Codes) and new Box 12 codes.

New Box 12 Codes-

TP: Total qualified tips

TT: Total qualified overtime compensation

TA: Employer contributions to “Trump Accounts

Form W-2C Filing Requirements

• Form W-2C is filed with the Social Security Administration (SSA) and not the IRS.
• After filing, furnish corrected copies of Form W-2C to the affected employee.
• File one Form W-3C per corrected year when submitting one or more Form W-2C.
• Filing more than 10 forms requires electronic filing.
• Substitute correction forms (employer-designed forms of official IRS/SSA forms) must strictly follow IRS/SSA formatting specifications.
• IRS penalty rules still apply for late, missing, or incorrect correction filings.

Form W-2C Deadline for the 2026 Tax Year

There is no fixed deadline. Form W-2C must be filed as soon as an error is discovered and copies must be furnished to the affected employees immediately after filing with the SSA. This ensures that the employee gets the correct information for their tax return.

How to eFile Form W-2C with 1099Online

1099Online is an IRS-authorized filing platform that offers a simple and flexible way to file Form W-2C online and transmit to the SSA securely.

Step 1: Enter The Correct Data
Enter the W-2C information that has to be corrected using guided manual entry or import your correction data via CSV/Excel template.

Step 2: Add Previously Reported and Corrected Amounts
Add the previously reported amounts and the corrected amounts for each affected field.

Step 3: Review and Transmit
Review the corrected form and submit it along with Form W-3C securely to the SSA.

Step 4: Send Copies To Recipients (Employees)
Distribute corrected employee copies to the employees using built-in mailing feature that sends the form via postal mail or simply download a PDF copy.

Frequently asked questions