FORT YATES, N.D. (AP) – The Standing Rock Sioux Tribe is expanding sales tax collections on the reservation that straddles the North Dakota-South Dakota border.

The tribe has tax commissions in both states. The commission on the South Dakota side has long collected a sales tax.

The Tribal Council voted unanimously in May to also enter into a tax-collection agreement with the state of North Dakota, The Bismarck Tribune reported. The tribe will receive 80 percent of the revenue from the tax on the North Dakota portion of the reservation, and the state will receive 20 percent.

The agreement has been in the works for several years, according to Tribal Chairman Dave Archambault II and Myles Vosberg, director of the state’s Tax Administration Division.

“It’s not something that happened overnight,” Archambault said.

He acknowledged that some tribal members aren’t happy but said the revenue could help with infrastructure needs and lead to economic development.

The 5 percent tax goes into effect July 1. Vosberg said the state has sent notice to reservation retailers and will help them implement collections. Archambault said he hopes the tribe will eventually be able to start its own system for tax collections, rather than relying on the state.

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Information from: Bismarck Tribune, http://www.bismarcktribune.com