Taxpayer Records. –

Every business organization shall:
I. Keep such records as may be necessary to determine the amount of its liability under this chapter and to determine whether the compensation claimed as a deduction under RSA 77-A:4, III is reasonable;
II. Preserve such records for the period of 3 years or until any litigation or prosecution hereunder is finally determined;
III. Make such records available for inspection by the commissioner or authorized agents, upon demand, at reasonable times during regular business hours. Whoever violates the provisions of this section shall be subject to the penalties imposed under RSA 21-J:39.
IV. Any taxpayer records obtained or inspected by the commissioner or his or her agents for the purpose of conducting an audit of the taxpayer's compliance or liability under this chapter shall be kept confidential and not disclosed for any purpose unless required by law.
V. In any judicial proceeding under this chapter, all taxpayer records and related pleadings shall remain sealed and not disclosed to any non-party to the proceeding for any purpose unless required by law.