Table of Contents

W-2 E-Filing: Hawaii - Corrected W-2C

Nina Tchistiakova Updated by Nina Tchistiakova

E-filing threshold

Specifications do not specify.

Filing options

Electronic filing

Required file name


E-filing website

Submitting files

Each file must be zipped and be no more than 200MB.

HTO file upload – This is the easiest free method available for submitting W-2s and W-2Cs. This method does not require any special software in order to upload the file. A zip file is submitted with the filed HW-3 return completed through HTO. Take the following steps:

a. Create an EFW2 file with a .txt extension, and then zip it with a .zip extension.

b. Logon to HTO at and select Form HW-3.

c. Follow the prompts to upload the EFW2 file you created.

d. Complete the Form HW-3.

There is no testing required, however, Hawaii highly recommend submitters validate their zipped EFW2 and EFW2C files through our validation app which can be found on our HTO landing page at The file will also be validated upon upload.

Acknowledgments (proof of filing): A transmitted file will either meet the content specifications and be accepted or will have an error and immediately be rejected. We will not notify you by email, letter, or by phone that the file was rejected or accepted. If you are transmitting the file via method 1, you will automatically be validating the file when you upload. If you are transmitting the file via method 2, please validate your file through the HTO validation application before transmitting the file through our SFTP site.

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W-2 E-Filing: Hawaii

W-2 E-Filing: Idaho