Follow the steps to fill out the form efficiently.

1. Press the ‘Get Form’ button to access the form, allowing you to open it in an online editor.
2. Fill in the 'Tax Period' section by entering the starting date and the ending date for your tax year.
3. Indicate whether this is an amended return by checking the appropriate box.
4. Provide the Estate/Trust/QFT EIN and the name of the estate or trust as it appears on federal Form SS-4.
5. Enter the name and title of the fiduciary or trustee along with their address, city, state, and ZIP code.
6. Select the type of entity by checking the appropriate box and clarify if this is the initial or final return.
7. Complete the federal taxable income section and any adjustments if applicable, noting that nonresident estates should skip the first line.
8. Calculate Maine taxable income as directed based on residency and provided lines.
9. Determine the Maine income tax using the tax table as referenced in the instructions.
10. Adjust your tax as required and provide details about any tax payments made, such as withholdings and credits.
11. If this is an amended return, fill in any overpayment from the previous return.
12. If additional payments are required, indicate the tax balance due and any penalties for underpayment.
13. For refunds, determine how much should be credited to next year's estimated tax and how much will be refunded or deposited directly to your checking account.
14. Complete the 'Third Party Designee' section if you want to allow someone else to discuss this return with the relevant services.
15. Affirm the accuracy of your entries and sign the form in the designated areas. Include the date and any preparer information if applicable.
16. Finally, save your changes, download a copy for your records, and share or print the completed form as needed.

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