Many people assume that when they lend money to a family member, friend, business partner, or another private party, they have complete freedom to set whatever interest rate they choose in the promissory note or loan agreement. After all, freedom to contract is a fundamental principle of contract law. If both parties agree to an interest rate and sign a promissory note, why should the law interfere?
The answer lies in California’s effort to balance the freedom of private parties to contract with the need to protect borrowers from excessive and usurious interest rates and abusive lending practices. California’s usury laws impose limits on the amount of interest that may be charged on certain private loans. Lenders who fail to understand these restrictions may unintentionally create an unenforceable interest provision or expose themselves to potential liability.
California’s usury laws are primarily found in Article XV, Section 1 of the California Constitution. The general rule is that no person or entity may receive interest on a loan in excess of the applicable legal limit unless the transaction falls within an exception or exemption.
For many private loans, the maximum permissible interest rate is the greater of 10 percent per year or 5 percent plus the rate charged by the Federal Reserve Bank of San Francisco on advances to member banks. Cal. Const., Art. XV, § 1.
However, the constitutional limits contain numerous exceptions. The fact that a loan carries a high interest rate does not automatically mean that it is unlawful. The first question is whether California’s usury restrictions apply to the transaction.
One common exception involves seller carryback financing, where a seller finances a buyer’s purchase of real property by accepting a promissory note secured by a deed of trust. Because this is treated as part of the purchase transaction and not a traditional loan, the law generally views it as a credit sale rather than a loan under the time-price differential doctrine. In other words, the seller and buyer are agreeing on the price of the property and the terms for paying that price over time, rather than the seller lending money and charging interest. The difference between the cash price and the deferred payment price is generally considered part of the purchase price, not interest.
Business and commercial loans can also raise complicated usury issues. Although certain business-purpose loans may qualify for an exemption, the analysis depends on the purpose of the loan, the parties involved, and whether the statutory requirements are satisfied. Simply calling a transaction a “business loan” does not, by itself, exempt it from California’s usury laws.
Another common misconception is that only the stated interest rates matter. California courts look beyond the interest rate stated on the face of the document and may consider whether other charges or payments required as part of the loan effectively increase the cost of borrowing. Certain fees, bonuses, or compensation paid to a lender may be treated as additional interest depending on the circumstances.
The consequences of violating California’s usury laws can be significant. Depending on the circumstances, a lender that charges unlawful interest may (i) forfeit the right to collect interest altogether, (ii) be required to refund usurious interest already paid, and (iii) face civil liability. In certain cases, willful violations may also expose a lender to criminal penalties. See Civ. Code § 1916-3.
Because the application of California’s usury laws depends heavily on the facts of each transaction, lenders should carefully evaluate the structure of a loan before funds are advanced. A loan between family members may be treated differently from a loan made to a business. A real estate-secured loan may be treated differently depending on whether a licensed broker is involved. A seller-financed business transaction may require a different analysis than a traditional loan.
Properly documenting the transaction at the outset can help avoid costly disputes, unenforceable interest provisions, and potential liability. A written loan agreement should accurately describe the principal amount, interest rate, repayment terms, maturity date, default provisions, and any collateral. Just as importantly, the transaction itself, not merely the language of the promissory note, must comply with California law. Taking the time to understand the applicable usury rules before money changes hands can help protect both the lender and the borrower from unintended legal consequences.