What are the penalties for late tax payments or for not paying my tax bill?

Taxes should be paid as billed. However, if for some reason you are unable to do so, Massachusetts Law mandates that interest, at a rate of 14% per annum, be added to the tax computed from the date the tax was due through the date of payment. In all cases, each Fiscal Year’s tax must be paid in full on or before the May 1st due date to avoid any unfortunate collection action from the town.