Idaho maximum interest rate is the answer to “maximum interest rate allowed by law in Idaho”. This guide gives the Idaho figures in a dated table, explains in plain words what they mean, walks through the steps, and points to the official forms and free help.
The Idaho maximum interest rate figures on this page were verified against a dated 50-state compilation and Idaho sources as of October 2026; the statute named here is where to check them yourself.
Idaho maximum interest rate at a Glance
| Legal rate when no rate is agreed | 12% per year when there is no written contract |
| Statute | Idaho Code 28-22-104 |
In This Idaho maximum interest rate Guide:
What the Idaho Maximum Interest Rate Means
Usury means charging more interest than the law allows. In Idaho, the legal rate is only a fallback that applies when the parties never agreed on a rate in writing. For consumer loans and credit sales, the Idaho Credit Code generally sets the rate at whatever the parties agree to (Idaho Code 28-42-201). So in most cases there is no single fixed cap on an agreed rate.
The Idaho maximum interest rate Figures
| Rule | Bonus Bank Daily verified figure |
|---|---|
| Legal rate when no rate is agreed | 12% per year when there is no written contractcompilation / agency — verified Oct 2026 |
| Statute | Idaho Code 28-22-104compilation / agency — verified Oct 2026 |
The Idaho maximum interest rate figures on this page were verified against a dated 50-state compilation and Idaho sources as of October 2026; the statute named here is where to check them yourself.
Who the Idaho Maximum Interest Rate Applies To
Idaho’s fallback rate applies to money owed when no written agreement sets a different rate, such as loans, money due under a contract, and open accounts. Banks chartered in other states and national banks can generally charge the rate their home state allows, so Idaho limits usually do not control those loans.
Licensed consumer lenders, including payday and title lenders, follow the Idaho Credit Code, which lets the parties agree on the finance charge but also sets licensing and conduct rules. Credit card issuers are usually out-of-state or national banks, so their rates come from their home state’s law.
Credit Cards and the Idaho Maximum Interest Rate
Most credit cards are issued by national banks or banks chartered in other states. Federal law lets a national bank charge the interest rate its home state allows, even to a borrower in Idaho, and state-chartered banks have similar rights. That is why a card rate can be far above Idaho’s fallback rate and still be legal in most cases.
What Happens When a Lender Breaks the Idaho Maximum Interest Rate
When a loan breaks the cap, the borrower may be able to recover the excess interest or more, depending on the statute, and charging above a criminal threshold can be a crime.
How to Check a Loan Against the Idaho Maximum Interest Rate
1) Find the loan agreement and the federal Truth in Lending disclosure, which shows the APR and finance charge. 2) Check whether a rate was agreed in writing. If not, the fallback legal rate applies. 3) Find out who the lender is: an out-of-state or national bank, an Idaho-licensed lender, or a private party.
4) For a payday loan, check that the lender is licensed and that the loan did not exceed 25% of your gross monthly income when it was made. 5) Confirm with the statute, the Idaho Department of Finance or an attorney.
Where to Report a Loan Above the Idaho Maximum Interest Rate
The Idaho Department of Finance, Consumer Finance Bureau, licenses consumer lenders, including payday and title lenders, and takes complaints (consumer credit line 208-332-8002). You may also file a complaint with the federal Consumer Financial Protection Bureau at consumerfinance.gov/complaint.
Common Mistakes With Idaho maximum interest rate
The most common mistake is missing a deadline: court and creditor deadlines run whether or not you have read the papers, and a missed one usually cannot be undone. The second is relying on an old article or a friend’s experience in another state — the rules on this page differ from state to state and change often, which is why every figure here is dated.
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The third is not keeping copies: every letter, form, receipt and bank statement may matter later, so keep them together and note the date you received each one.
Free Help With Idaho maximum interest rate in Idaho
You do not have to handle this alone or pay to get answers. The Idaho court self-help center explains the forms and the steps, and court clerks can tell you where and how to file, although they cannot give legal advice.
Legal aid organizations represent many people at no cost when income is limited, and the Idaho bar’s lawyer referral service can connect you with a lawyer for a low-cost first consultation. The Consumer Financial Protection Bureau accepts complaints about lenders, banks and debt collectors nationwide.
How We Verify the Idaho maximum interest rate Figures
Every figure in the table above comes from our 50-state data file, built by reading the Idaho statute or an official compilation of it, and each one carries the month we last checked it. Our writers do not change those figures; they explain them. When the law changes, the figure is updated and the date moves.
If something on this page no longer matches the statute, the statute controls — and we want to hear about it.
Idaho payday loans have no rate cap, but a single loan may not exceed 25% of the borrower’s gross monthly income when it is made. A borrower may not owe more than $1,000 in total payday loan principal, and one payday loan may not be paid off with another (Idaho Code 28-46-413). Lenders must offer an extended payment plan on request once in any 12-month period (28-46-414).
A payday loan made in Idaho without the required license is void, uncollectable and unenforceable (28-46-402(3)). Interest on court judgments is set separately at 5% plus the base rate in effect when the judgment is entered.
Next rung: the Idaho payday loan page covers the short-term loans that have their own caps.
Idaho — the bottom line
- Idaho maximum interest rate rules set two numbers — the legal rate and the written-contract cap — both in the table above.
- Many lenders sit outside the Idaho maximum interest rate cap by license or charter, so check which rule covers your loan.
- If a loan breaks the Idaho maximum interest rate rules, keep the agreement and report it to the state regulator.
Idaho Maximum Interest Rate FAQ
What is the maximum interest rate allowed by law in Idaho?
Without an agreement: 12% per year when there is no written contract.
Official Idaho Sources & Resources
- Statute and the Conference of State Bank Supervisors 50-state usury survey (verified by each state regulator) — maximum legal interest rate: https://www.csbs.org/50-state-survey-consumer-finance-laws
- Statute and the Conference of State Bank Supervisors 50-state usury survey (verified by each state regulator) — maximum legal interest rate: https://facts.csbs.org/consumer-finance-law/dev
- Idaho statute / opinion: https://legislature.idaho.gov/statutesrules/idstat/Title28/T28CH42/SECT28-42-201/
- Idaho Department of Finance – Consumer Finance Bureau (Consumer Credit): https://www.finance.idaho.gov/consumer-credit
- Consumer Financial Protection Bureau: consumerfinance.gov
This Idaho maximum interest rate guide was last verified against official Idaho sources in October 2026. Rules change — confirm the current rule with the statute or a licensed attorney.
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Disclaimer: This guide is general information, not legal or financial advice. Bonus Bank Daily is an independent educational resource — not a law firm, not a bank, not a debt collector and not a government agency. Judgment, levy, interest-rate and debt rules change — every figure here carries the date we verified it.
Confirm the current rule with the statute, the court clerk or a licensed attorney in your state before you act.