137.121—What funds may be included in a stable base budget amount?
The stable base budget amount may include, at the option of the Self-Governance Tribe,
(a)
Recurring funds available under section 106(a) of the Act [25 U.S.C. 450j-1] ;
(b)
Recurring Tribal shares; and
(c)
Any recurring funds for new or expanded PSFAs not previously assumed by the Self-Governance Tribe.