Employers in Minnesota must conform with these state rules relating to filing income tax withholding returns.
Periodic Returns. Monthly (Form MW-5) deposits due by 15th day of following month. Quarterly returns (Form MW-1) are due April 30, July 31, October 31, and February 28 of the following year and with the deposit, if the employer is not on a semi-weekly or monthly deposit schedule, except that the fourth quarter deposit is due January 31. In e-Services, the fourth quarter return will no longer serve as an annual reconciliation. The return will include only wage and withholding information for the fourth quarter. Annual returns (Form MW-1A) due by February 28.
Annual Reconciliation Returns. Form MW-6 due February 28; annual filers need not file this form.