Minnesota Form M15C (Additional Charge for Underpayment of Estimated ... 2026

1. Click ‘Get Form’ to open it in the editor.
2. Begin by entering the name of your corporation and the FEIN in the designated fields at the top of the form.
3. Input your Minnesota Tax ID and ensure all amounts are rounded to the nearest whole dollar as specified.
4. For Line 1, enter your 2022 tax amount. If this is less than $500, you do not need to complete this form.
5. Proceed to Line 2 and enter your 2021 tax amount. Then, on Line 3, input the lesser of Line 1 or Line 2.
6. Fill in the due dates for each quarter on Line 4 and required installments on Line 5 based on instructions provided.
7. Complete Lines 6 through 13 carefully, ensuring you follow the order of operations as outlined in the instructions.
8. Finally, calculate any additional charges on Lines 16 and 17 before saving or exporting your completed form.

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