7 C.F.R. § 250.20
(b) Requirements for processors. In-State processors must obtain an independent certified public accountant (CPA) audit in the first year that they receive donated foods for processing, while multi-State processors must obtain such an audit in each of the first two years that they receive donated foods for processing. After this initial requirement period, in-State and multi-State processors must obtain an independent CPA audit at a frequency determined by the average value of donated foods received for processing per year, as indicated in this paragraph (b). The value of donated foods used in determining if an audit is required must be the contract value of the donated foods, as defined in § 250.2. The audit must determine that the processor's performance is in compliance with the requirements in this part, and must be conducted in accordance with procedures in the FNS Audit Guide for Processors. All processors must pay for audits required in this paragraph (b). An in-State or multi-State processor must obtain an audit: