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
Customer service representatives are available 7 a.m.-7 p.m., Monday through Friday
To apply online, please visit the IRS website.
The Form SS-4 (see instructions) can be mailed or faxed to the IRS.
You can only receive your EIN through the IRS. If you have questions about getting an EIN, contact the IRS.
Once you’ve received your EIN from the IRS, you can register your business with MassTaxConnect.