Haw. Rev. Stat. § 238-2.2

There is hereby levied an excise tax on the value of intangible property acquired from an unlicensed seller and imported or used in the State. The tax imposed by this chapter shall accrue when the intangible property is acquired by the importer or purchaser and becomes subject to the taxing jurisdiction of the State. The rate of the tax hereby imposed shall be four per cent of the value of the intangible property.