California applies a constitutional usury ceiling under Article XV, Section 1, set for business purpose loans at the higher of 10 percent per year or 5 points above the San Francisco Federal Reserve discount rate. The exemptions swallow much of the rule, since lenders licensed under the California Financing Law at Fin. Code §22000 et seq. fall outside the cap, and anyone lending commercially as a business generally needs that license. Non-bank providers also owe the disclosures required by Fin. Code §§22802 and 22803. Lending above the ceiling without a license is the fastest way to lose your interest.
New York runs a two tier system that trips up private lenders. Civil usury caps interest at 16 percent under Gen. Oblig. Law §5-501, and criminal usury begins above 25 percent under Penal Law §190.40. Corporate and LLC borrowers lose the civil defense under §5-521, yet the Court of Appeals held in Adar Bays, LLC v. GeneSYS ID, Inc. that they keep the criminal usury defense, and a note above that line can be void as to principal and interest alike. Loans of 250,000 dollars or more escape the civil cap; loans of 2.5 million dollars or more escape both.
Texas regulates commercial loans as well as consumer loans, which surprises out of state lenders. Chapter 306 of the Finance Code governs commercial credit, with ceilings computed under Chapter 303: 18 percent for ordinary commercial loans, 24 percent in defined circumstances, and 28 percent for a qualified commercial loan under §306.001(9). Usury is measured by spreading interest across the term using the actuarial method required by §306.004, and a loan agreement above 50,000 dollars must be written to be enforceable under Tex. Bus. & Com. Code §26.02.
Delaware is the jurisdiction of choice for larger commercial paper. 6 Del. C. §2301 sets a legal rate of 5 points above the Federal Reserve discount rate, but subsection (c) removes any interest limitation on loans above 100,000 dollars not secured by a mortgage on the borrower's principal residence. That freedom explains why negotiated credit agreements so often choose Delaware law even when neither party sits in the state. The clause will not defeat another state's criminal usury statute where that state has a materially greater interest.
Florida caps interest at 18 percent per year up to 500,000 dollars and at 25 percent above that figure under Fla. Stat. §687.03, with criminal usury beyond 25 percent under §687.071. Willful violation forfeits the interest; knowing violation can forfeit principal. Providers register with the Office of Financial Regulation under Fla. Stat. §§559.952 and following, and documentary stamp tax applies to written promises to pay delivered in the state.