E filer attachment 2026

1. Click ‘Get Form’ to open the e-Filer Attachment in the editor.
2. Begin by entering the Tax Year or fiscal year at the top of the form. Ensure you use the correct format (MM/DD/YY).
3. Select the appropriate Tax Type by marking one of the options provided, such as Individual Income or C Corporation Income.
4. Fill in your personal information, including your last name, first name, middle initial, and if applicable, your spouse’s details.
5. Enter your Taxpayer SSN or ITIN and your spouse's SSN or ITIN if applicable. Also, provide your FEIN.
6. Complete your address details including street address, city, state, and zip code.
7. Mark the box next to each document you are submitting to ensure all required documentation is included.
8. Sign and date the form at the bottom to validate your submission before finalizing it in our platform.

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