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.
**NO ALTERING OF ONTC TAX FORMS**
Please send all electronic mail to the following email address: firstname.lastname@example.org
We continue to encourage taxpayers to mail-in their documents.
Memo To Retailers on Unhealthy Food Items
When inquiring about Tax, please Call your assigned Tax Compliance Officer.
TAX 20-240 Amendments to the Tax Administration Regulation (TAR)
Reminder January 15th Deadline
Public Ruling Healthy Foods Act
Timely Filing Page 9-10 1.146 Due Dates &Time Determination Section D.