Massachusetts Income Tax Withholding Payment and Filing Requirements
Employers in Massachusetts must conform with these state rules relating to filing income tax withholding returns.
Periodic Returns. Monthly (Form M-942) due by 15th day of following month, except for March, June, September and December, due on the last day of the following month. Quarterly (Form 941) due by last day of month following end of quarter. Annual (Form M-941A) due by January 31 of following year, if employer withholds $100 or less per calendar year. Weekly payments (Form M-941W) may be required.
Annual Reconciliation Returns. Form M-3 (Quarterly) and Form M-3M (Monthly).