If your business makes taxable sales to customers in Massachusetts, you may need to register for a Massachusetts sales tax permit before collecting tax. This 2026 guide explains who must register, what information you need, and how to complete the registration process.
For broader information about Massachusetts sales tax rules, rates, and exemptions, see the Massachusetts Sales Tax Guide. For details on deadlines and reporting, see the Massachusetts Sales Tax Filing Guide.
Quick answers: Massachusetts sales tax registration
A quick overview of the authority, registration portal, nexus threshold, and other essentials for registering in Massachusetts.
| Fact | Detail |
|---|---|
| Authority | Massachusetts Department of Revenue |
| Registration portal | MassTaxConnect |
| Economic nexus threshold | $100,000 in annual sales to Massachusetts customers |
| Renewal period | Sales tax licenses generally renew every two years |
Who must register for Massachusetts sales tax
You must register for Massachusetts sales tax if your business has a sales tax nexus in the state. This usually applies when a business:
- Exceeds the economic nexus threshold of $100,000 in annual sales to Massachusetts customers, or;
- Has a physical presence in Massachusetts, such as an office, employee, or inventory.
If your business exceeds the threshold during the current calendar year, Massachusetts generally requires you to begin collecting tax by the first day of the first month that starts at least 90 days after crossing the threshold. Businesses that exceeded the threshold in the previous calendar year are generally required to collect tax for the entire current year.
If you're unsure whether your business has nexus, see the Massachusetts Sales Tax Guide for a broader explanation of Massachusetts sales tax rules.
How to register for Massachusetts sales tax
Sellers can register online for sales tax in Massachusetts through MassTaxConnect, the official and required system for registering for Massachusetts sales tax with the Massachusetts Department of Revenue.
Information you need before registering
Before applying for a Massachusetts sales tax license, be sure to have this information handy:
- Your Social Security number (if registering as a sole proprietor with no employees)
- Your Employer Identification Number (EIN), if your business has one (required for corporations, partnerships, and most LLCs)
- North American Industry Classification System number. Each number is a 2-6 digit code. Find yours in the NAICS directory.
- The date of your first sale in Massachusetts
Registration Steps
Follow these steps to register for a Massachusetts sales tax license.
1. Create your online login
Set up your account credentials for ongoing tax management.
Additional details:
- Choose a username and password
- Set security questions
- This login will be used to file returns, make payments, and communicate with the state
Note: In some cases, if you already have a MassTaxConnect account (for another tax type), you may simply add a new tax account instead of creating a brand-new login.
2. Provide your business locations
Enter your primary business address and any additional Massachusetts locations, if applicable.
Additional details
- You'll report your main business location and any physical places of business (such as offices, stores, or warehouses)
- Massachusetts uses a single statewide sales tax rate, so your location does not affect the rate you charge
- Indicate where you expect to make sales within Massachusetts.
3. Application fee
Massachusetts does not charge a fee to register for a sales tax permit. Registration is completed at no cost through MassTaxConnect.
There is no payment required during the application process. However, once registered, you are responsible for collecting and remitting sales tax according to your assigned filing schedule through the Massachusetts Department of Revenue.
4. Submit your application
Review your entries and submit the application.
Additional details
- You will receive an on-screen confirmation
- A confirmation email is typically sent shortly after submission
5. Receive your Massachusetts sales tax license
Once approved, you will receive your registration details.
Additional details
- Your sales tax license
- Your Massachusetts Account Number (CAN), used for filing and payments
- Your assigned filing frequency (typically monthly or quarterly, depending on your expected tax liability)
What happens after registration
After registering, you must begin collecting Massachusetts sales tax on taxable sales and file returns based on your assigned filing frequency. All sales tax in Massachusetts is administered at the state level, so no separate local sales tax registrations or filings are required.
➡ Learn more about Massachusetts sales tax rates and rules in the Massachusetts Sales Tax Guide
➡ See how to report and pay tax in the Massachusetts Sales Tax Filing Guide
Note: At Quaderno we love providing helpful information and best practices about taxes, but we are not certified tax advisors. For further help, or if you are ever in doubt, please consult a professional tax advisor or the local tax authorities.
Need help registering across multiple states?
Watch our webinar: US Sales Tax Registration & Filing Tips + AMA. Learn how international sellers register, file, and manage US sales tax compliance across multiple jurisdictions.
Note: At Quaderno we love providing helpful information and best practices about taxes, but we are not certified tax advisors. For further help, or if you are ever in doubt, please consult a professional tax advisor or the tax authorities.
