7 C.F.R. § 4279.119
(a) Loan amount. The total amount of B&I loans to one borrower (including the guaranteed and unguaranteed portions, the outstanding principal and interest balance of any existing B&I guaranteed loans, and the new loan request) must not exceed $10 million, except as outlined in paragraphs (a)(1) and (2) of this section. In addition to the borrower loan limit, there is a guarantor loan limit of $50 million.
(1) The Administrator may, at the Administrator's discretion, grant an exception to the $10 million limit for loans of $25 million or less under the following circumstances:
(b) Percentage of guarantee. The percentage of guarantee, up to the maximum allowed by this section, is a matter of negotiation between the lender and the Agency. The maximum percentage of guarantee is 80 percent for loans of $5 million or less, 70 percent for loans between $5 and $10 million, and 60 percent for loans exceeding $10 million. For subsequent guaranteed loans, the maximum percentage of guarantee will be based on the cumulative amount of outstanding principal and interest of any existing B&I guaranteed loans and the new loan request. Notwithstanding the preceding, the Administrator may, at the Administrator's discretion, grant an exception allowing guarantees of up to 90 percent on loans of $5 million or less if the conditions of either paragraph (b)(1) or (b)(2) are met. Each fiscal year, the Agency will establish a limit on the maximum portion of guarantee authority available for that fiscal year that may be used to guarantee loans with an increased percentage of guarantee. The Agency will publish a notice announcing this limit in the Federal Register.