25 C.F.R. § 1000.399 How may interest or investment income that accrues on AFAs be used?
Title 25 - Indians
Unless restricted by the AFA, interest or income earned on investments or deposits of self-governance awards may be: (a) Placed in the Tribe's general fund and used for any purpose approved by the Tribe; or (b) Used to provide expanded services under the self-governance AFA and to support some or all of the costs of investment services.
Title 25: Indians
PART 1000—ANNUAL FUNDING AGREEMENTS UNDER THE TRIBAL SELF-GOVERNMENT ACT AMENDMENTS TO THE INDIAN SELF-DETERMINATION AND EDUCATION ACT
Subpart Q—Miscellaneous Provisions
§ 1000.399 How may interest or investment income that accrues on AFAs be used?

