To submit your state W-2 electronically:

  1. Create the W-2 file you need to upload in step 3.  See E-file your State W-2s from QuickBooks Desktop for detailed steps.
  2. Access the state website.
  3. Upload your W-2 information.  
    • Make sure you upload the .txt file, the Excel file cannot be submitted through the agency system.

Note: Follow agency instructions on submitting your CT-W3 filing.