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1 Important Alert(s)


Over the extended Memorial Day weekend, from May 22 through May 27, some of our regular services and bill payment options will be temporarily unavailable due to a system update.  As always, we’ll continue to respond to electric emergencies 24 hours a day. Thank you for your patience and understanding.

Tax Exempt Forms

Customers can find sales tax exemption forms by visiting the Massachusetts Department of Revenue website at: DOR Sales and Use Tax Forms |

Select the Massachusetts DOR form that applies to your individual situation. Fully complete the form making sure to check all appropriate boxes, then sign and date it. Be sure to indicate your National Grid customer account number.

Submit the form via one of these options:

  • Mailing Address:
         National Grid
         c/o Avalara
         512 S. Magnum St., Suite 100
         Durham, NC  27701
  • Self-Service Web Portal: Use our exemption certificate self-service web portal (Avalara Cert Express) to complete and submit sales tax exemption forms.  Be sure to indicate your National Grid customer account number.

The following are examples of commonly used Massachusetts sales tax exemption certificates:

Mass DOR Form Number Form Title

ST-2 and ST-5

Certificate of Exemption and Sales Tax Exempt Purchaser Certificate-
(Check expiration dates & send in updated certificates)


Resale Certificate


Contractor Exempt Purchase Certificate


Exempt Use Certificate

ST-14 and ST-15

Direct Payment Permit and Direct Payment Certificate

Federal Government

Provide a signed letter on government letterhead stating exempt status

Qualifying Small Business Energy Exemption

(*Please Note: ST-13 forms are no longer valid)

Do not submit form ST-13. It is no longer valid, and we cannot accept it.

Instead, please contact the Massachusetts Dept. of Revenue to verify qualification and receive your Small Business Energy Exemption certificate.

Then call National Grid’s Customer Service at 1-800-322-3223 (for Electric accounts) or 1-800-233-5325 (for Gas accounts) to submit your exemption.

Note that SBE exemptions are only valid for up to two years.