Our mission is to gain full compliance with the tax, child support, and municipal finance laws of the Commonwealth.

Income Extension Deadline

File and pay your income or fiduciary extended return by October 15, 2025.

E-file Your Income Taxes

E-filing is the fastest way to file your personal income tax return and receive a refund.

New Businesses Tax Info.

Learn what steps to take before and after registering your business.
I want to...
- Log in to MassTaxConnect
- Check My Refund
- Register a Business with MassTaxConnect
- See Due Dates and Extensions
- Amend a Tax Return
- File an Appeal or Abatement
- Set Up a Payment Agreement
- Learn about Personal Income Tax
- Learn About Estimated Tax
- Learn About Business Taxes (including Corporate)
- Learn About Motor Vehicle Excise
- Pay Sales or Use Tax on a Boat, Recreational Off-highway Vehicle, or Snowmobile
- Request a Certificate of Good Standing or Corporate Tax Lien Waiver
- See All Forms & Instructions