A-04 / Legal boundary
Recycle all receipts or create an unrestricted revenue pool
The general rule requires Treasury deposit of money received for the Government; receipt of funds does not automatically allow retention and reuse.
Scope and exceptions
Congress provides specific exceptions, including qualifying working-capital, reimbursement, gift, licensing and other special-account authorities.
Planning implication
Use the specific receipt-retention rule, not a general business analogy.