The North Dakota Office of State Tax Commissioner has updated its guidance on how sales tax applies to transactions involving Native Americans. The guidance clarifies that while certain transactions are exempt, sales involving Native Americans are not automatically tax-free. Instead, taxability depends on factors such as location of the sale, identity of the buyer and how the purchased items will be used.
At the government level, the rules remain. Sales made directly to Native American tribal governments are exempt from North Dakira sales and use tax. This includes purchases made by tribal agencies performing essential governmental functions. However, beyond government-level transactions, the rules become more complex. According to the state’s guidance, Native American retailers operating within the boundaries of a reservation are not required to collect sales tax on any sales made on the reservation, regardless of who the customer is. However, non-Native American retailers operating on a reservation must collect sales tax on sales to non-Native American customers but may not collect sales tax on sales to Native American customers if the sale occurs on the reservation.
The location of the transaction plays a critical role. If a Native American customer buys something off the reservation, the purchase is taxable. However, if a retailer located off the reservation delivers the goods to the customer on the reservation, the sale may be exempt, but only if the seller can prove the delivery happened on the reservation and the goods were used there. Additionally, use tax can apply even when a purchase is made tax-free. If goods purchased on a reservation are later used outside the reservation, use tax may be owed, particularly for non-Native American customers who are always subject to use tax on such purchases.
The state emphasizes that retailers must keep good documentation. They need to be able to prove when a sale is exempt, identify Native American customers when required, and keep delivery records. Without proper records, the state may treat the sale as taxable during an audit. The state’s clarification aims to reduce confusion around transactions involving Native American Tribal Governments and individuals living on reservations. Misunderstanding these rules can lead to unexpected liabilities, especially in cases involving mixed customer bases or delivery scenarios. For businesses understanding where a sale occurs, who the customer is, and how the product is used, is essential in determining whether a transaction involving Native Americans is taxable or exempt.
(Sales Tax: Sales to Native Americans Guideline, North Dakota Office of State Commissioner, March 2026)