Everything freelancers and small businesses need to know about charging late fees, interest rates, and collecting overdue invoices in New Hampshire.
This information is provided for general educational purposes only and does not constitute legal advice. Laws change frequently. Consult a licensed attorney in New Hampshire for advice on your specific situation. Last reviewed: 2026.
Usury laws cap the maximum interest rate that can be charged on overdue payments in New Hampshire.
No general cap; 10% default
New Hampshire has no general usury cap. Default rate is 10% per annum (RSA § 336:1).
No general cap, so exemptions are unnecessary.
Understanding what you can and cannot charge for late payments in New Hampshire.
Late fees are allowed when contractually agreed. No usury cap provides maximum flexibility.
No statutory cap.
Standard contract law principles.
New Hampshire Prompt Payment Act sets deadlines and penalties for late payments in New Hampshire.
30 days for state contracts.
Interest on late payments.
New Hampshire requires state agencies to pay within 30 days under RSA § 21-I:17-c.
Certain industries in New Hampshire have additional rules around payment timelines, liens, and collection procedures.
Construction: RSA § 447:2 requires mechanics' lien filing within 120 days.
Government contracts: RSA § 21-I:17-c mandates 30-day payment.
Tourism: New Hampshire's seasonal tourism industry follows standard commercial terms.
Use this compliant wording on your invoices to clearly communicate your late fee policy in accordance with New Hampshire law.
Payment is due within 30 days. A late fee of 1.5% per month (18% per annum) will be assessed on unpaid invoices. New Hampshire does not impose a general usury cap (RSA § 336:1).
This wording works because it clearly states the rate, when it applies, and references New Hampshire legal standards. Always ensure your stated rate complies with New Hampshire's usury limits.
Practical tips for invoicing within New Hampshire's legal framework.
Before you can charge a late fee in New Hampshire, your client needs to have agreed to the terms. Include your late fee clause directly on your invoice and in your contract.
New Hampshire caps interest rates at No general cap / 10% default. Charging above this limit can void your right to collect interest entirely and may expose you to penalties.
A reminder 3 days before the due date and a follow-up the day after dramatically reduces late payments. Automated reminders ensure nothing slips through the cracks.
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Compare New Hampshire's rules with neighboring and commonly referenced states.
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