29 CFR § 99.215 - Relation to other audit requirements.
(a) Audit under this part in lieu of other audits. An audit made in accordance with this part shall be in lieu of any financial audit required under individual Federal awards. To the extent this audit meets a Federal agency's needs, it shall rely upon and use such audits. The provisions of this part neither limit the authority of Federal agencies, including their Inspectors General, or GAO to conduct or arrange for additional audits (e.g., financial audits, performance audits, evaluations, inspections, or reviews) nor authorize any auditee to constrain Federal agencies from carrying out additional audits. Any additional audits shall be planned and performed in such a way as to build upon work performed by other auditors.
(b) Federal agency to pay for additional audits. A Federal agency that conducts or contracts for additional audits shall, consistent with other applicable laws and regulations, arrange for funding the full cost of such additional audits.
(c) Request for a program to be audited as a major program. A Federal agency may request an auditee to have a particular Federal program audited as a major program in lieu of the Federal agency conducting or arranging for the additional audits. To allow for planning, such requests should be made at least 180 days prior to the end of the fiscal year to be audited. The auditee, after consultation with its auditor, should promptly respond to such request by informing the Federal agency whether the program would otherwise be audited as a major program using the risk-based audit approach described in § 99.520 and, if not, the estimated incremental cost. The Federal agency shall then promptly confirm to the auditee whether it wants the program audited as a major program. If the program is to be audited as a major program based upon this Federal agency request, and the Federal agency agrees to pay the full incremental costs, then the auditee shall have the program audited as a major program. A pass-through entity may use the provisions of this paragraph for a subrecipient.