If you are unable to pay the entire tax due on your North Dakota individual income tax return, be sure to file your return by the due date (or extended due date, if applicable). Pay as much of the tax due as you can using any of the allowable payment methods. We will bill you for the unpaid amount. Any tax remaining unpaid after the due date (or extended due date, if applicable) will be subject to a penalty charge of 5% (minimus $5.00) plus interest at the rate of 1% per month or fraction of a month. If you need to make an arrangement to pay your tax due over a period of time, please contact our Accounts Receivable Section at 701.328.1244, and ask to speak with a collection officer. Don’t put off filing your return, and do not hesitate to contact our office for assistance in satisfying your North Dakota income tax obligation.