The State Organization Index provides an alphabetical listing of government organizations, including commissions, departments, and bureaus.
Top-requested sites to log in to services provided by the state
Your business tax resource center
Businesses come in all sizes — from large multinational corporations to sole proprietorships. This page has the information you need to fulfill your business tax obligations to the Commonwealth.
Learn what is and isn't subject to sales or use tax and how to register your business with the Department of Revenue.
Massachusetts imposes a corporate excise tax on certain businesses.
Learn about sales, meals, withholding, and other trustee taxes that organizations may collect on behalf of the state.
Learn about different types of business organizations.
Learn the requirements which come with being an employer in Massachusetts.