Mississippi W2 E-File Requirements & EFW2 Text Format | MS TAP Upload

Mississippi W2 Electronic Filing Common Questions and Answers

Does Mississippi mandate filing W-2s electronically?

As a Mississippi employer you are only required to file electronically when you have 25 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 Mississippi W2 E-Filing format and details?

Refer to Publication 89-145 "Procedures and Specifications for Filing Wage and Tax Information Electronically".

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

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


Does Mississippi follow the EFW2 format defined by the SSA?

Yes, Mississippi 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 MS DOR-EFW2 (W2 E-File) Withholding file attachment to Mississippi?

MS TAP allows taxpayers to transmit W2 Forms. To access TAP and submit returns electronically, visit MS DOR website at https://tap.dor.ms.gov/

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

Yes this record is mandatory and has to be included.

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

The state does not have any special naming requirements; however the file must have .txt as the file extension. It is a good idea to have the company name included in the file name.

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

Use the number shown on the original/replacement SSN card. Omit hyphens. If there is no SSN available for the employee, enter zeros (0) in positions 10 - 18 of the RS Record.

How do I know if my submission was successful?

After a successful submission to Mississippi TAP website will automatically populate the webpage with a confirmation. It's very important that you print this page for your records.

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

Call 601-923-7088

The electronic filing engine available inside our W2 Mate® software gives Mississippi employers and tax professionals the ability to e-File W2s with both the state of Mississippi 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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