For most filers, your 2014 Minnesota income tax return is due by April 15, 2015. Your return must be postmarked, delivered to, or electronically received by the Department of Revenue by that date. Your tax payment is due in full by April 15, even if your return is filed later.
If you file tax according to the fiscal year, your return and payment are due on the 15th day of the fourth month after the end of the fiscal year. If the 15th falls on a Saturday, Sunday or holiday, the due date is the next business day.
If you cannot complete and file your return on time: