Arkansas Late Fee Calculator
Work out interest on an overdue B2B invoice under Arkansas law. The legal default rate — what applies when the contract is silent — is 6%, and the statute is quoted verbatim below. All math runs locally in your browser.
Default when the contract is silent; in litigation, court-awarded interest follows the contract rate or Fed primary credit rate +2%, whichever is greater.
Late fee breakdown
- Interest owed
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- Daily rate
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- Total (invoice + interest)
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Still unpaid? Generate a formal demand letter — it computes the interest and cites Arkansas's statute (Ark. Const. amend. 89; Ark. Code Ann. § 4-57-101(d)) for you.
What Arkansas law actually says
The maximum lawful rate of interest on loans or contracts not described in Sections 1 and 2 shall not exceed seventeen percent (17%) per annum. [...] All contracts under Section 3 having a rate of interest in excess of the maximum lawful rate shall be void as to principal and interest
Quoted verbatim from the linked official source — not our paraphrase. How we source and re-check every row is documented in the data methodology.
Maximum late fee in Arkansas — written B2B contracts
Hard cap 17% (constitutional).
Hard 17%/yr constitutional cap on all contracts; no business exemption. A clause above 17% makes the contract void as to BOTH principal and interest.
Basis: Ark. Const. amend. 89 §§ 3, 6. Compare all 51 jurisdictions on the full state table and the cap-regime map.
B2B invoices only — not rent, not consumer debt
Everything on this page is about business-to-business invoices. Residential rent late fees live in Arkansas's landlord-tenant law and consumer credit has separate, stricter rules — two different bodies of law. The distinction is explained in B2B invoice late fees vs. residential rent.
Use this data
Arkansas's row — rate, cap, citation, verbatim quote, verification date — is part of our open 51-jurisdiction dataset: CSV · JSON (CC BY 4.0, cite myinvoicetemplate.com). Set late-fee terms on your next invoice with the free invoice generator, or state them clearly using the wording guidance in the payment terms guide.
Arkansas late fee FAQ
Can I charge late fees on overdue invoices in Arkansas?
Yes — on business-to-business invoices. If your contract or invoice states a late-fee rate, that rate governs (subject to the cap rules below). If nothing was agreed: 6%. Default when the contract is silent; in litigation, court-awarded interest follows the contract rate or Fed primary credit rate +2%, whichever is greater. Statute: Ark. Const. amend. 89; Ark. Code Ann. § 4-57-101(d), verified 2026-08-19. Consumer and rent debts follow separate laws.
What is the maximum late fee I can charge in Arkansas?
For a written B2B contract: 17% per year — constitutional cap (amend. 89, § 3); no business exemption. Usurious contracts are void as to principal and interest. Basis: Ark. Const. amend. 89 §§ 3, 6. The full cap analysis is in the section above; this covers business-to-business deals only — consumer credit has stricter separate caps.
What interest applies if my contract doesn't mention late fees in Arkansas?
The statutory default rate of 6%. Default when the contract is silent; in litigation, court-awarded interest follows the contract rate or Fed primary credit rate +2%, whichever is greater. Statute: Ark. Const. amend. 89; Ark. Code Ann. § 4-57-101(d) (verbatim quote on this page, verified 2026-08-19).
Does this cover rent, apartment, or consumer late fees in Arkansas?
No. This page covers business-to-business invoices only. Residential rent late fees are governed by Arkansas's landlord-tenant law, and consumer credit for personal, family, or household purposes has its own stricter caps and disclosure rules. Those are different statutes than the commercial-interest law cited here.
Where does this data come from, and when was it verified?
Every figure on this page comes from our 51-jurisdiction dataset: each row researched against the controlling statute or the state's official current-rate page, independently re-checked, and stamped with its own verification date — Arkansas's row was last verified 2026-08-19. The operative legal text is quoted verbatim on this page with a link to the official source, the methodology is public, every verification pass is logged in the changelog, and the full dataset is downloadable (CC BY 4.0).
Not legal advice. This page summarizes Arkansas's commercial-interest statute for general information, with the verification date shown above — it tells you when we last confirmed the figures, not that they are still current today. Statutes change and courts interpret them; verify the cited statute at the official source, or ask a licensed attorney in your state, before charging or demanding interest.