If your business is located in Arizona and you’re selling taxable products online to Arizona customers, yes. You need to collect and remit what Arizona calls Transaction Privilege Tax. Arizona doesn’t technically have a “sales tax” in the traditional sense. TPT is a tax on your privilege of doing business in the state, though most businesses pass it along to customers just like a standard sales tax.

The sales channel doesn’t change the obligation. Whether customers buy in your store, through your website, or on a marketplace like Amazon, you’re responsible for collecting TPT on taxable sales. You’ll register with the Arizona Department of Revenue, collect the appropriate tax, and file returns on schedule.

For out-of-state sellers shipping into Arizona, the rules shifted after the 2018 Wayfair Supreme Court decision. Arizona now requires remote sellers to collect and remit TPT once they exceed $100,000 in annual sales to Arizona customers. Below that threshold, you don’t have economic nexus and aren’t required to collect.

What you’re selling determines whether TPT applies. Tangible goods are generally taxable. Food for home consumption is usually exempt. Digital products and services follow more specific rules depending on the type. Business-to-business transactions may qualify for exemptions with proper documentation.

Arizona’s rate structure gets complicated because cities add their own TPT on top of the 5.6% state rate. Phoenix, Scottsdale, Mesa, and other municipalities each set different rates. When you ship to customers across the state, you collect based on the destination address. E-commerce businesses with high transaction volumes find this nearly impossible to track manually.

Arizona did simplify things for remote sellers in 2021 by consolidating filing into a single state return that covers all local jurisdictions. But in-state sellers with physical presence in multiple cities still deal with more complexity.

Getting this wrong creates problems that grow over time. Uncollected tax is still owed, often with penalties and interest stacked on top. The state actively looks for businesses that appear to have TPT obligations but no filing history. Cleaning up years of missed filings costs significantly more than setting up sales tax compliance correctly from the start.

If you’re unsure whether you need to collect, the safer path is to assume you do and establish proper tracking. Platforms like Shopify and Amazon can handle some collection automatically, but you’re still responsible for making sure the setup is correct and that your filings reconcile to what was collected.