Wisconsin W2 E-File Requirements & EFW2 Text Format | WI DOR W2 Upload

Wisconsin W2 Electronic Filing Common Questions and Answers

Does Wisconsin mandate filing W-2s electronically?

As a Wisconsin employer you are only required to file electronically when you have 10 or more W2 forms. You will need to check with the state annually, since this threshold is subject to change.

What is the name of the publication that defines Wisconsin W2 E-Filing format and details?

Refer to Publication 172 "Annual W-2, 1099-R, 1099-MISC &W-2G Electronic Reporting".

What software can I use to generate Wisconsin W2 E-File submissions?

You can use our W2 Mate software to create W2 E-File submissions that comply with Wisconsin requirements. To learn more about W2 Mate and download a demo you can visit


Can I mail my W2 E-File submission on a CD or other formats of magnetic media to Wisconsin?

Wisconsin no longer accepts magnetic media submissions by flash drive, CD-ROM, or diskette.

Does Wisconsin follow the EFW2 format defined by the SSA?

Yes, Wisconsin follows the "Specifications for Filing Forms W-2 (EFW2)" as defined by the SSA, but the state also has its own special requirements.

How can I submit the Wisconsin DOR-EFW2 (W2 E-File) Withholding file attachment to Wisconsin?

Transmit your file to the Wisconsin Department of Revenue at https://www.revenue.wi.gov/pages/onlineservices/w-2.aspx

Do you need to include the RV (State Total) record as part of the Wisconsin W2 E-File Submission?

The RV record is not utilized by Department of Revenue and should be excluded from the submission.

Do you need to include the RS (State Wage) records as part of the Wisconsin W2 E-File Submission?

Yes, this record is mandatory and has to be included.

Does Wisconsin have a special file naming convention for W2 E-File submissions?

No, the state does not have any special requirements; however it's a good idea to have the company name included in the file name and to have .txt as the file extension.

Is the Wisconsin W2 Electronic Filing submission attachment an ASCII text file?

Yes, the submission is a text file that follows the specifications of both the SSA EFW2 format and the Wisconsin requirements defined by Publication 172 "Annual W-2, 1099-R, 1099-MISC &W-2G Electronic Reporting".

Does Wisconsin have any requirements for money fields?

Money fields must contain only numbers. No punctuation. Include both dollars and cents with the decimal point assumed (example: $89.70 = 000008970). Right-justify and zero fill to the left. Any money field that has no amount to be reported must be filled with zeros, not blanks.

Does Wisconsin have any requirements for Social Security Number (SSN)?

Use the number shown on the original/replacement SSN card. Omit hyphens.

How do I know if my submission was successful?

After a successful submission to Wisconsin, you will receive a 13 digit receipt number. It's very important that you print this page for your records.

How do I contact Wisconsin with questions about my W2 E-File submission?

Call 608-266-2776 or Email DORW2DataQuestions@wisconsin.gov

The electronic filing engine available inside our W2 Mate® software gives Wisconsin employers and tax professionals the ability to e-File W2s with both the state of Wisconsin and the Social Security Administration’s (SSA). To learn more about W2 Mate visit https://www.realtaxtools.com/W2-Mate.html , email sales@realtaxtools.com or call 1-800-507-1992. 

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