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1 Important Alert(s)


We’re upgrading our billing system 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.  As always, we’ll continue to respond to gas 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 New York State Department of Taxation and Finance website at: Sales tax exemption documents (

Select the New York State 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 New York State sales tax exemption certificates:

NYS Form Number Form Title


Exempt Organization Exempt Purchase Certificate


Resale Certificate


Contractor Exempt Purchase Certificate


Exempt Use Certificate

ST-122 and DTF-122

Exempt Purchase Certificate for an Agent of a New York Governmental Entity and Certificate of Agency Appointment by a New York Governmental Entity


IDA Agent or Project Operator Exempt Purchase Certificate


Farmer’s and Commercial Horse Boarding Operator’s Exemption Certificate


Direct Payment Permit


Certificate of Indian Exemption for Certain Property or Services Delivered on a Reservation

Government Agency

Provide a signed letter on government letterhead stating exempt status