2 CFR 200.425: Audit services.

(a) A reasonably proportionate share of the costs of audits required by and performed in accordance with the Single Audit Act Amendments of 1996 (31 U.S.C. 7501-7507), and the requirements of this part are allowable. However, the following audit costs are unallowable:

(1) Any costs when audits required by the Single Audit Act and subpart F of this part have not been conducted, or have been conducted but not in accordance with the requirements; and

(2) Except as provided for in paragraph (c) of this section, any costs of auditing a non-Federal entity that is exempted from having an audit conducted under the Single Audit Act and subpart F of this part because its expenditures under Federal awards are less than $1,000,000 during its fiscal year.”

(b) The costs of a financial statement audit of a recipient or subrecipient that does not currently have a Federal award may be included in the indirect cost pool for a cost allocation plan or indirect cost proposal.

(c) Pass-through entities may charge Federal awards for the cost of agreed-upon procedures engagements to monitor subrecipients (in accordance with §§ 200.331-333) exempt from having an audit conducted under the Single Audit Act and the requirements of this part. This cost is allowable only if the agreed-upon procedures engagements are:

(1) Conducted in accordance with GAGAS or applicable international attestation standards, as appropriate;

(2) Paid for and arranged by the pass-through entity; and

(3) Limited in scope to one or more of the following types of compliance requirements: activities allowed or unallowed; allowable costs/cost principles; eligibility; and reporting.