If you failed to pay or underpaid your estimated income tax for the previous tax year, you must file Schedule M15 to calculate and pay any interest or penalties due to the Minnesota Department of Revenue.

Use this instructional booklet to help you fill out and file your 2012 M14 estimated income tax vouchers. Don't forget the due dates are: April 15 (first quarter), June 15 (second), Spetember 15 (third), and January 15 (fourth). Note: If you file your 2012 M1 by January 31, 2013, and pay the entire balance due, you do not have to make the fourth installment.

You must pay estimated income tax if you are self employed or do not pay sufficient tax withholding. Form M14 vouchers should be filed on a quarterly basis.

Form M1 is the most common individual income tax return filed for Minnesota residents. You must file yearly by April 17.

Tax-Rates.org provides a printable Minnesota datasheet including an income tax table, a list of Minnesota tax deductions, important URLs and mailing addresses, and more.