12 C.F.R. § 7.4001

(a) Definition. The term “interest” as used in 12 U.S.C. 85 includes any payment compensating a creditor or prospective creditor for an extension of credit, making available of a line of credit, or any default or breach by a borrower of a condition upon which credit was extended. It includes, among other things, the following fees connected with credit extension or availability: numerical periodic rates, late fees, creditor-imposed not sufficient funds (NSF) fees charged when a borrower tenders payment on a debt with a check drawn on insufficient funds, overlimit fees, annual fees, cash advance fees, and membership fees. It does not ordinarily include appraisal fees, premiums and commissions attributable to insurance guaranteeing repayment of any extension of credit, finders' fees, fees for document preparation or notarization, or fees incurred to obtain credit reports.

(b) Authority. A national bank located in a state may charge interest at the maximum rate permitted to any state-chartered or licensed lending institution by the law of that state. If state law permits different interest charges on specified classes of loans, a national bank making such loans is subject only to the provisions of state law relating to that class of loans that are material to the determination of the permitted interest. For example, a national bank may lawfully charge the highest rate permitted to be charged by a state-licensed small loan company, without being so licensed, but subject to state law limitations on the size of loans made by small loan companies.

(c) Effect on state definitions of interest. The Federal definition of the term “interest” in paragraph (a) of this section does not change how interest is defined by the individual states (nor how the state definition of interest is used) solely for purposes of state law. For example, if late fees are not “interest” under state law where a national bank is located but state law permits its most favored lender to charge late fees, then a national bank located in that state may charge late fees to its intrastate customers. The national bank may also charge late fees to its interstate customers because the fees are interest under the Federal definition of interest and an allowable charge under state law where the national bank is located. However, the late fees would not be treated as interest for purposes of evaluating compliance with state usury limitations because state law excludes late fees when calculating the maximum interest that lending institutions may charge under those limitations.

(d) Usury. A national bank located in a state the law of which denies the defense of usury to a corporate borrower may charge a corporate borrower any rate of interest agreed upon by a corporate borrower.

(e) Transferred loans. Interest on a loan that is permissible under 12 U.S.C. 85 shall not be affected by the sale, assignment, or other transfer of the loan.