Massachusetts DOR Contact Information
Contact the Massachusetts DOR for sales tax registration, filing questions, and compliance assistance.
Main Contact Information
| Phone | (617) 887-6367 |
| Website | mass.gov/dor |
| Online Portal | mtc.dor.state.ma.us |
| Hours | Monday-Friday, 8:00 AM – 5:00 PM local time |
Main Office Address
Massachusetts DOR
100 Cambridge Street, Boston, MA 02114
Online Resources
The Massachusetts DOR online portal at mtc.dor.state.ma.us allows you to:
- Register for a sales tax account
- File sales and use tax returns
- Make tax payments
- View account history
- Update business information
Response Time Expectations
| Phone inquiries | Immediate (hold times vary) |
| Online registration | Immediate to 10 business days |
| Written correspondence | 2-4 weeks |
Related Massachusetts Guides
Sales Tax Permit
Step-by-step registration guide.
Rates and Fees
Current Massachusetts tax rates.
Interested in professional support? Learn about our filing assistance service for help with your Massachusetts sales tax application.
Disclaimer: This guide is for informational purposes only. For official information, visit mass.gov/dor.