• 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 - for Massachusetts Taxpayers

    MassTaxConnect is DOR's state-of-the-art, electronic system for filing and paying taxes in the Commonwealth. The new integrated tax system replaced WebFile for Business in 2015, and individual income taxpayers will have access to MassTaxConnect on December 5, 2016. Read More

  • Ever Wonder What Goes On During a Small Business Workshop?

    Wanting to start your own business? Don’t know where to begin? A Small Business Workshop is the answer... Read More
  • Businesses: Check Out the MA Business Portal!

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