Delaware W2 E-File Requirements & EFW2 Text Format | DE Online W2 Submission

Delaware W2 Electronic Filing Common Questions and Answers

Does Delaware mandate filing W-2s electronically?

As a Delaware employer you are only required to file electronically when you have 250 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 Delaware W2 E-Filing format and details?

Refer to W-2 and 1099 Form FAQ's.

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

You can use our W2 Mate software to create W2 E-File submissions that comply with Delaware 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 Delaware?

Delaware no longer accepts magnetic media submissions.

Does Delaware follow the EFW2 format defined by the SSA?

Yes, Delaware follows the "Specifications for Filing Forms W-2 (EFW2)" as defined by the SSA.

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

You will submit an EFW2 formatted file online at https://dorweb.revenue.delaware.gov/w2send.

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

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

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

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

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

No, except that the combined name and extension (not including path) should be no more than 50 characters long; however it's a good idea to have the company name included in the file name and to have .txt as the file extension.

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

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

If online submission is used, how are the reconciliation forms submitted?

The annual withholding reconciliation, form W-3, is not required for data submitted online.

How do I know if my submission was successful?

When an uploaded file is processed, notification will be sent by e-mail to the address entered during the submission process.

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

Technical support for online submission is available by email dorsupport@state.de.us .

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