Fillable Form M15np - Additional Charge For Underpayment ... 2026

1. Click ‘Get Form’ to open it in the editor.
2. Begin by entering the name of your organization and its FEIN and Minnesota Tax ID in the designated fields.
3. Select the appropriate installment method by checking one of the boxes: Standard, Adjusted Seasonal, or Annualized Income.
4. Input your total tax liability from line 1. If it's $500 or less, you do not need to complete this form.
5. For line 3, enter the lesser amount between line 1 and line 2, unless exceptions apply.
6. Fill in the due dates for each quarter on line 4 and required installments on line 5.
7. Record payments made for each period on line 6 and follow through lines 7 to 13 for calculations related to underpayments and overpayments.
8. Complete lines 14 through 17 to compute any additional charges based on your entries.

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