What is the sales tax rate in Farmington?
The combined sales tax rate in Farmington, New Mexico is 8.1875% as of 2026. It is made up of the New Mexico statewide base rate of 4.875%, plus applicable San Juan County and local district taxes. Farmington sits within San Juan County, and the rate can vary slightly across ZIP codes because of special district additions (see the ZIP breakdown below).
Sales tax in New Mexico is administered by the New Mexico Taxation and Revenue Department, which collects and distributes tax on behalf of the state and its local jurisdictions. The rate applies to most retail sales of tangible personal property delivered within Farmington.
Who needs to collect sales tax in Farmington, New Mexico?
Any business with sales tax nexus in New Mexico must register, collect, and remit sales tax on taxable sales delivered to Farmington. Nexus is established through:
- Physical presence: an office, store, warehouse, employee, or inventory located in New Mexico.
- Economic nexus: exceeding $100,000 in sales to New Mexico customers in the current or prior year.
- Marketplace facilitators: platforms such as Amazon or Etsy collect and remit on behalf of their third-party sellers.
Out-of-state (remote) sellers that cross New Mexico's economic nexus threshold must register with the New Mexico Taxation and Revenue Department before continuing to sell into the state.
How do you register for a sales tax permit in Farmington?
To collect sales tax in Farmington, you must register for a sales tax permit with the New Mexico Taxation and Revenue Department. Registration is generally free. You will typically need your EIN or SSN, business entity details, bank account information, and an estimate of your monthly New Mexico sales. Most permits are issued within a few business days of an online application.
How do you charge the right sales tax in Farmington?
Sales tax in Farmington is charged based on the delivery address. For orders shipped to a Farmington address, the combined rate of 8.1875% generally applies; for in-store sales, the rate is based on the store's location. Because some ZIP codes within San Juan County carry additional special-district taxes, always confirm the exact rate for the specific delivery ZIP code. The tables below show the most common Farmington ZIP codes and how Farmington compares with other cities in San Juan County and across New Mexico.
