Form 4891-2026

1. Click ‘Get Form’ to open it in the editor.
2. Begin by entering the tax year in MM-DD-YYYY format on line 1. If not a calendar-year taxpayer, specify the beginning and ending dates.
3. On line 2, input the taxpayer name. For Unitary Business Groups (UBGs), enter the name of the Designated Member (DM).
4. Enter the Federal Employer Identification Number (FEIN) on line 3. Ensure consistency across all forms.
5. Complete your address details on line 4, including city, state, and ZIP code. This is crucial for correspondence regarding your return.
6. For NAICS code, refer to line 5 and enter the six-digit code that corresponds to your business activities.
7. If applicable, check box on line 8 if using a special sourcing formula for transportation services and complete lines 9a through 9g accordingly.
8. Proceed through each section of the form methodically, ensuring all calculations are accurate based on your financial data.

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