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Business Taxes

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 how to register your business with MassTaxConnect — DOR's web-based application for filing and paying taxes. You can also learn how to apply for an Employee Identification Number (EIN), request a certificate of good standing, or find out about the latest business tax credits.

From verifying a sales and use tax resale certificate to finding the latest information on corporate excise and withholding tax — we look forward to working with you.

What would you like to do?

Top tasks

Log in to MassTaxConnect  Make a payment with MassTaxConnect  Paid Family and Medical Leave 

All other tasks

Register your business with MassTaxConnect  Remote Seller and Marketplace Facilitator FAQs  Attend a DOR Small Business Workshop  Request a Certificate of Good Standing-Tax Compliance or a Corporate Tax Lien Waiver  Verify a sales or meals tax certificate  Submit annual certification of entity tax status  
See all 14 of the what would you like to do section 

What you need to know

Sales and Use Tax  Withholding  Corporate Excise   Room Occupancy Excise Tax  Cigarette and Tobacco Excise  Motor Fuel Excise  
See all 17 of Business Taxes 

Contact Information

Phone

Tax Department (617) 887-6367
Toll-free in Massachusetts (800) 392-6089

9 a.m.–4 p.m., Monday through Friday

Online

Contact Us Your one-stop connection to DOR. 
MassTaxConnect Log in to file and pay taxes. 
Receive email updates Subscribe to receive updates from DOR. 

More Information

Related Services

See all 7 

Additional Resources

Tax Forms
Estimated Tax Payment Vouchers
Business Tax Credits
Set up a payment agreement
Small business energy exemption
Apply for an Employer Identification Number (EIN)
See all 18 
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