N.H. Rev. Stat. Ann. § 77-A:3-b
In determining gross business profits for any period, before net operating loss and special deductions, a business organization shall apply the provisions of the United States Internal Revenue Code consistent with the provisions of this chapter, with the following adjustments:
Source. 2016, 295:2, eff. June 21, 2016. 2019, 346:205, eff. Jan. 1, 2020.