Payroll Taxes

Learn more about keeping your business compliant with payroll tax requirements.

Montana Income Tax Withholding Payment and Filing Requirements

Employers in Montana must conform with these state rules relating to filing income tax withholding returns.

Periodic Returns. Monthly (Form PC) due by the 15th day of the following month. Quarterly (Form MTQ) due by the last day of the month following the end of the quarter.

Annually (Forms PC and AR) for employers that withheld less than $1,200 during the look back period due by February 28 of the next calendar year.

Annual Reconciliation Returns. Form AR and MW-3 due by February 28.

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