State rules
Iowa auto loan rules
Iowa has 940 Census places covered on AutoLoanable, with a combined estimated population of 2,584,480. Vehicle financing in Iowa is governed by state law — the interest-rate caps, title-lending rules, sales-finance licensing and the regulator that oversees them. The sourced figures below apply to every car loan made to a borrower in the state.
The lowest rates are only available to the most qualified applicants.
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Key rules for car buyers in Iowa
| Rule | Detail | Source |
|---|---|---|
| Maximum legal interest rate (usury cap) | 2 percentage points above the monthly average 10-year U.S. Treasury constant maturity rate (written agreements) Source says: "The maximum lawful rate of interest ... in any written agreement ... shall be two percentage points above the monthly average ten-year constant maturity interest rate". |
Iowa Legislature (Iowa Code) as of 2026-09-17 |
| Vehicle title loan status | Loans secured by a motor vehicle certificate of title are capped at a 21% per year finance charge, except as authorized for licensed lenders under Iowa Code ch. 536 or ch. 536A. Source says: "A lender shall not contract for or receive a finance charge exceeding twenty-one percent per year on the unpaid balance of the amount financed for a loan of money secured by a certificate of title to a motor vehicle" License category: Regulated loan license (Iowa Code ch. 536) for rates above the 21% cap. |
Iowa Legislature — Iowa Code § 537.2403 as of 2026-09-17 |
| Sales finance / installment lender licensing | Regulated Loan Act license required (superintendent of banking) Source says: "shall not engage in the business of making loans ... without first obtaining a license from the superintendent of banking". No separate motor-vehicle sales finance act — consumer credit sales are governed by the Iowa Consumer Credit Code, with motor vehicle finance charges set by Iowa Code § 322.19 (Iowa Code ch. 537 (esp. § 537.2201); Iowa Code § 322.19). |
Iowa Legislature (Iowa Code) as of 2026-09-17 |
| State lending regulator | Iowa Division of Banking (IDOB), Iowa Department of Insurance and Financial Services Source says: "As part of the 2023 state government realignment, the IDOB became part of a new Department of Insurance and Financial Services". |
Iowa Division of Banking as of 2026-09-17 |
| Sales tax on vehicle purchases | 6% state rate; many cities and counties add a 1% local option tax. Source says: "Iowa's state sales/use tax rate is 6%. Many cities and counties also have a 1% local option tax." |
Iowa Department of Revenue as of 2026-09-17 |
How to use these rules
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Check the ceiling before you compare offers
If a quoted APR looks extreme, compare it against the Iowa cap above — and note that a specific statutory exemption can apply to a particular product.
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Verify the lender is licensed
Use the regulator named in the table to confirm the lender or sales-finance company may legally serve borrowers in the state.
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Know what is secured against your car
A vehicle title loan is secured by the car itself. If the state permits it, understand the repossession terms before you sign anything.
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Budget for tax and fees separately
Sales tax and title fees are financed along with the car, so they raise the amount you borrow — and therefore the interest you pay on them.
Cities in Iowa
We cover 940 Census places in Iowa.