Haw. Rev. Stat. § 37D-8: Exemption from taxation.

All real and personal property owned or operated by the State, the department, or any agency, and any interests created in or transfer or recording of the property or any interest in the property, and payments made under the financing agreements to which the property is subject shall be exempt from all state, county, and municipal taxation, and fees and charges of every kind. Financing agreements issued pursuant to this chapter and the income therefrom, including without limitation the interest component of any lease payments, shall be exempt from all taxation by the State or any county or other political subdivision thereof, except inheritance, transfer, and estate taxes.