Ya'a teeh and welcome to the official Navajo Nation, Office of the Navajo Tax Commission (ONTC) website!  The Office of the Navajo Tax Commission administers and audits nine taxes in the Navajo Nation, the largest Indian reservation in the United States.

Our mission is to promote tribal sovereignty by collecting tax revenues and to provide taxpayers quality service by helping them understand their tax responsibilities through fair and just application of Navajo tax laws.






Please send all electronic mail to the following email address:  nnontc@navajo-nsn.gov


Memo To Retailers on Unhealthy Food Items


Due to COVID-19 restrictions, When inquiring about Tax, please Call your assigned Tax Compliance Officer.



March 19, 2020 - Pursuant to Navajo Nation Executive Branch Order, Declaring a State of Emergency due to COVID-19.  The declaration allows closure of Navajo Nation Government Offices.


Due to the Navajo Nation Travel Restriction and Community Gathering Restriction. We have closed our office to the public to limit the spread of the COVID-19 virus.  We will remain closed to the public until further notice.


ONTC is an essential service.  We are  operating during this Executive Order, but please be reminded that the office is closed to the public.  The ONTC office will continue to provide services by phone, postal service, and email.


We continue to encourage taxpayers to mail-in their documents. 









Other Bulletins: