Businesses

Businesses come in all sizes — from large multinational corporations to sole proprietors. Whatever your size, the pages in this section have the information you need to take care of your tax obligations to the Commonwealth. 

MassTaxConnect is DOR's electronic system for filing and paying taxes in the Commonwealth. The new integrated tax system replaced WebFile for Business in 2015, and WebFile for Income in 2016. Read More

Wanting to start your own business? Don’t know where to begin? A Small Business Workshop is the answer... Read More

It’s the one-stop business portal for information, tools, and more - all intended to help you succeed in the Commonwealth.