What is a Tribal share?
Primary source
Verbatim text below is from the Electronic Code of Federal Regulations (eCFR), a public-domain U.S. government work. Always verify the current version with the eCFR before relying on it for any legal matter.
Full Text
A Tribal share is the portion of all funds and resources determined for a particular Tribe (or Tribes within a Consortium) that support any program within BIA, BIE, BTFA, or the Office of the Assistant Secretary for Indian Affairs and are not required by the Secretary for the performance of an inherent Federal function as described in §§ 1000.685 through 1000.695.
This is legal information, not legal advice. Laws vary by jurisdiction and change frequently. Always verify current law with official sources and consult a licensed attorney in your jurisdiction for advice on your specific situation.