The Massachusetts Department of Revenue has extended the due date for personal income tax returns and payments from April 15, 2020 to July 15, 2020. ( This is only for personal tax returns.

https://www.mass.gov/info-details/important-covid-19-coronavirus-response-update-from-dor

All Sales Tax returns and payments expected during the period beginning March 20th and ending May 31, 2020 are suspended. All such returns and payments are now due on June 20, 2020.

This postponement does not apply to marijuana retailers, marketplace facilitators, or vendors selling motor vehicles. Such vendors are expected to file returns and make payments following the standard rules for those industries.

https://www.mass.gov/info-details/important-covid-19-coronavirus-response-update-from-dor