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Uploading Withholding files

If you are a business with a withholding file 2MB or less in size, please follow these steps:

Step 1: Register for INtax
Step 2: Manually enter each of your W-2s into INtax. Be sure that you have a valid Indiana Taxpayer Identification number (TID). However, if you have a valid EFW2 text file, you may upload your W-2s. More information can be found in our W-2 and WH-3 Filing Requirements Booklet.

Taxpayers with Withholding Files Over 2MB in Size

Step 1: Register for INtax
Step 2: Batch upload your W-2s.

The bulk file upload is a system for uploading electronic files containing tax return data to the Indiana Department of Revenue (DOR)'s system. Batch upload submitters must be pre-registered and certified to use the system. This is DOR's preferred method of electronic filing if a company has a withholding file size of more than 2MB.

To submit a file to the department's Bulk Upload Web site, you must do all of the following:

  1. Have a valid Indiana Taxpayer Identification number (TID) for each return
  2. Be registered in INtax if you are a service provider (the clients included in the file do not have to be registered)
  3. Have a text file in the prescribed SSA EFW2 format
  4. Use PGP encryption software to encrypt file before sending them
  5. Use the following software to connect to the secure FTP site: https://myshare.in.gov/Pages/sftp.aspx - Request User Name and Password to secure FTP site from the department (IDORB2BSupport@dor.in.gov)
  6. Successfully complete an upload of two test files to the FTP site listed in step E.


You can use INtax to manage your Indiana sales and withholding taxes online. It gives you 24/7 access to your business tax records and lets you file and pay online right up to the last minute.

Additional Resources

Contact Us

Phone: (317) 233-5656
E-mail: IDORB2BSupport@dor.in.gov
Address: Electronic Filing Coordinator
Indiana Department of Revenue
100 North Senate Avenue, IGC N286
Indianapolis, IN 46204-2253

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