If you work with a Tribal or IHS optometry clinic, you've probably heard the phrase "Buy Indian Act" — usually in the context of procurement preference. Here's what it actually means, in plain language.

The short version

The Buy Indian Act (25 U.S.C. § 47) is a 1910 federal law that authorizes agencies to purchase supplies, services, and construction from qualified Native-owned businesses, called Indian Economic Enterprises, without always running a full competitive process. The Transfer Act of 1954 extended that authority specifically to the Indian Health Service, so IHS can apply Buy Indian Act preference to its health care procurement — including optical purchasing.

What counts as an Indian Economic Enterprise?

Generally, a business needs to be at least 51% owned and controlled by enrolled members of a federally recognized Tribe. Vendors self-certify this status when responding to a solicitation, and that status has to hold at the time of offer, at award, and throughout the life of the contract.

What it isn't

The Buy Indian Act doesn't apply to everything IHS or Tribal health programs purchase. It specifically does not cover contracts awarded under the Indian Self-Determination and Education Assistance Act (ISDEAA, P.L. 93-638), and it doesn't apply to Purchased/Referred Care purchase orders. Those follow different rules entirely.

Why it matters for optical purchasing

  • It can shorten procurement timelines by allowing direct negotiation with a qualified IEE instead of full open competition.
  • Since a January 2022 IHS final rule, contracting offices are expected to use this authority whenever practicable — meaning documentation matters more than it used to.
  • It keeps procurement dollars circulating inside Tribal economies rather than leaving Indian Country.

Working with a vendor who already understands this

Not every optical supplier has been through an IEE self-certification or worked inside an IHS solicitation before. If your clinic is exploring a new optical vendor, it's worth asking directly whether they qualify as an Indian Economic Enterprise and whether they've handled Buy Indian Act paperwork before — it can save your contracting office real time.