26 CFR § 601.804 - Reimbursements.
(a) General. When provided for in cooperative agreements, the Internal Revenue Service will provide amounts to program sponsors for reimbursement to volunteers for transportation, meals, and other expenses incurred in training or providing tax return assistance and to program sponsors for reimbursement of overhead expenses. Cooperative agreements will establish the items for which reimbursements will be allowed and the method of reimbursement, e.g., stipend versus actual expenses for meals, as well as developing necessary procedures, forms, and accounting and financial control systems.
(b) Direct, reasonable, and prudent expenses. Reimbursements will be allowed only for direct, reasonable, and prudent expenses incurred as a part of a volunteer's service or as a part of the program sponsor's overhead.
(c) Limitation. Total reimbursements provided to a program sponsor shall not exceed the total amount specified in the cooperative agreement. The Internal Revenue Service shall not be liable for additional amounts to program sponsors, volunteers, or anyone else.
(d) Availability of appropriated funds. Expense reimbursements and other assistance to be provided by the Internal Revenue Service under cooperative agreements are contingent upon the availability of appropriated funds for the Tax Counseling for the Elderly program.