12 C.F.R. § 34.3 : Banks and Banking — COMPTROLLER OF THE CURRENCY, DEPARTMENT OF THE TREASURY — REAL ESTATE LENDING AND APPRAISALS — GENERAL — General rule

(a) A national bank may make, arrange, purchase, or sell loans or extensions of credit, or interests therein, that are secured by liens on, or interests in, real estate (real estate loans), subject to 12 U.S.C. 1828(o) and such restrictions and requirements as the Comptroller of the Currency may prescribe by regulation or order.
(b) A national bank shall not make a consumer loan subject to this subpart based predominantly on the bank's realization of the foreclosure or liquidation value of the borrower's collateral, without regard to the borrower's ability to repay the loan according to its terms. A bank may use any reasonable method to determine a borrower's ability to repay, including, for example, the borrower's current and expected income, current and expected cash flows, net worth, other relevant financial resources, current financial obligations, employment status, credit history, or other relevant factors.
(c) A national bank shall not engage in unfair or deceptive practices within the meaning of section 5 of the Federal Trade Commission Act, 15 U.S.C. 45(a)(1), and regulations promulgated thereunder in connection with loans made under this part.

12 C.F.R. §34.3

68 FR 70131, 12/17/2003, as amended at 69 FR 1917, 1/13/2004