Motor Vehicle Excise tax bills will be mailed on January 29, 2021. Excise Tax is due on Monday, March 1, 2021. According to MGL Chapter 60A, Section 2 "Failure to receive notice shall not affect the validity of the excise." This means that even if you don't receive the bill, you are still liable for paying the excise plus any accrued interest and fees. Bills are sent to addresses on file, at the Registry of Motor Vehicles, as of December 31, 2020. If you do not receive your bill, contact the Tax Collector's office at 978-630-4008.