New Jersey Late Fee Calculator
Work out interest on an overdue B2B invoice under New Jersey law. When the contract is silent, the default is variable — the currently published figure, the official page that sets it, the written-contract cap, and the statute are all on this page.
Post-judgment interest under Court Rule 4:42-11(a): the annual rate equals the average rate of return of the State of New Jersey Cash Management Fund (State accounts) for the preceding fiscal year, to the nearest whole or one-half percent, but not less than 0.25%; judgments exceeding the Special Civil Part monetary limit ($20,000) bear that rate plus 2% per annum. Set annually by AOC notice.
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 New Jersey's statute (N.J. Ct. R. 4:42-11; N.J.S.A. 31:1-1, 31:1-6; 2C:21-19) for you.
What the governing court rule says in New Jersey
(a) Post Judgment Interest. Except as otherwise ordered by the court or provided by law, judgments, awards and orders for the payment of money, taxed costs and attorney's fees shall bear simple interest as follows: [...] (ii) For judgments not exceeding the monetary limit of the Special Civil Part at the time of entry, regardless of the court in which the action was filed: commencing January 2, 1986 and for each calendar year thereafter, the annual rate of interest shall equal the average rate of return, to the nearest whole or one-half percent, for the corresponding preceding fiscal year terminating on June 30, of the State of New Jersey Cash Management Fund (State accounts) as reported by the Division of Investment in the Department of the Treasury, but the rate shall be not less than 0.25%. (iii) For judgments exceeding the monetary limit of the Special Civil Part at the time of entry: in the manner provided for in subparagraph (a)(ii) of this Rule until September 1, 1996; thereafter, at the rate provided in subparagraph (a)(ii) plus 2% per annum.
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 New Jersey — written B2B contracts
Hard cap 50% criminal (entity).
16% civil cap is unenforceable vs corporations/LLCs/LLPs, and deals $50k+ escape it, but criminal usury still caps B2B: 50%/yr to an entity, 30%/yr to an individual.
Basis: N.J.S.A. 31:1-1(e), 31:1-6, 2C:21-19. 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 New Jersey'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
New Jersey'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.
New Jersey late fee FAQ
Can I charge late fees on overdue invoices in New Jersey?
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: Variable; currently published figure: 4.5% / 6.5% (2026). Post-judgment interest under Court Rule 4:42-11(a): the annual rate equals the average rate of return of the State of New Jersey Cash Management Fund (State accounts) for the preceding fiscal year, to the nearest whole or one-half percent, but not less than 0.25%; judgments exceeding the Special Civil Part monetary limit ($20,000) bear that rate plus 2% per annum. Set annually by AOC notice. Statute: N.J. Ct. R. 4:42-11; N.J.S.A. 31:1-1, 31:1-6; 2C:21-19, verified 2026-08-21. Consumer and rent debts follow separate laws.
What is the maximum late fee I can charge in New Jersey?
For a written B2B contract: 16% written civil cap on paper — but corporate borrowers cannot plead usury and deals of $50,000+ are exempt; criminal ceiling 50% (entities) / 30% (individuals). Basis: N.J.S.A. 31:1-1(e), 31:1-6, 2C:21-19. 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 New Jersey?
Variable — Post-judgment interest under Court Rule 4:42-11(a): the annual rate equals the average rate of return of the State of New Jersey Cash Management Fund (State accounts) for the preceding fiscal year, to the nearest whole or one-half percent, but not less than 0.25%; judgments exceeding the Special Civil Part monetary limit ($20,000) bear that rate plus 2% per annum. Set annually by AOC notice. Currently published figure: 4.5% / 6.5% (2026). Confirm the applicable figure via the official page linked on this page before relying on it. Statute: N.J. Ct. R. 4:42-11; N.J.S.A. 31:1-1, 31:1-6; 2C:21-19.
Does this cover rent, apartment, or consumer late fees in New Jersey?
No. This page covers business-to-business invoices only. Residential rent late fees are governed by New Jersey'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 — New Jersey's row was last verified 2026-08-21. 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 New Jersey'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.