Table of Contents

W-2 E-Filing: Hawaii

Nina Tchistiakova Updated by Nina Tchistiakova

Due date

February 28 

E-filing threshold

Specifications do not specify.

Filing options

Electronic filing

Required file name

Any name with “.txt” at the end.

Required File Name: [CompanyName]_W2C_[YYYYMMDDhhmmss].zip

E-filing website

Submitting files

Each file must be zipped and be no more than 200MB. Hawaii does not accept files for tax years before 2017.

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. For years 2019 and prior, select form HW-3.

e. For years 2021 and forward, select form HW-14 last quarter for the filing year.

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. In order to receive Acknowledgements (ACKS), testing and certification for both good and bad W-2/W-2C files are required. ACKS will be sent for each W-2/W-2C file submitted and will include a status of whether the file was accepted or rejected. If the W-2 file is rejected, there will be one ACK file with a status of rejected that lists all the records in error for that W-2 file.

If you are not set up to receive ACKS, we will NOT notify you by email, letter, or by phone that the file was rejected or accepted.

How did we do?

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

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