N.H. Rev. Stat. Ann. § 402:63

The provisions of RSA 402:24 and RSA 402:56 and 57 shall not apply to mutual insurance companies that operate on an assessment plan and require as a condition for granting insurance the signing of a premium deposit note by the insured, which note is given for the purpose of establishing a limit of liability to assessment, while their total receipts from policyholders is less than $10,000 per year.