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Usury Laws in Oklahoma

In Oklahoma, a loan from someone not regularly in the lending business can carry up to 45% a year, and the legal rate is 6% when no rate is agreed.

Last checked . General information, not legal advice.

Oklahoma at a glance

Maximum agreed rate
45%
Applies to loans other than consumer loans, such as loans by people not regularly in the lending business. Consumer loans by regular lenders have lower caps.
Legal rate (no rate agreed)
6%

Sources

Last checked

The rules in Oklahoma

What is the maximum interest rate on a private loan in Oklahoma?

Maximum agreed rate in Oklahoma: 45%. Applies to loans other than consumer loans, such as loans by people not regularly in the lending business. Consumer loans by regular lenders have lower caps.

What interest rate applies in Oklahoma when no rate was agreed?

Legal rate (no rate agreed) in Oklahoma: 6%.

Where do the Oklahoma usury laws come from?

The rules above come from Okla. Stat. tit. 15, 266, Okla. Stat. tit. 14A, 3-104, Okla. Stat. tit. 14A, 3-605, Okla. Stat. tit. 14A, 5-107 and Okla. Const. art. XIV, 2. Each source is linked on this page. We last checked them in October 2026.

Good to know

The Oklahoma Constitution lets the Legislature fix maximum rates and treats rates above 10% as usurious only where no statute fixes a maximum.

What this means in practice

Put the interest rate in writing. Many usury statutes set one limit for written agreements and a different, often lower, rate when nothing was agreed in writing. A signed promissory note or loan agreement that states the rate, the payment schedule and what happens on late payment avoids most disputes.

Count every charge, not only the stated rate. Courts may treat fees, points, required extras or a discount taken from the amount lent as interest when deciding whether a loan is usurious. A loan with a modest rate and large fees can still cross the limit.

Check who the lender is and what the loan is for. Usury limits often do not apply, or apply differently, to banks, licensed consumer lenders, credit card issuers, larger loans and loans to businesses or corporations. A rule written for loans between individuals may not cover your situation, so read the statute and its exceptions.

General information, not legal advice. Laws change, and cities can add their own rules, so check the current statute before you rely on it.