Haw. Rev. Stat. § 437D-6: Additional mandatory charges prohibited.

The daily and periodic rental cost to the lessee shall include the amount of each charge which is required as a condition to the rental other than those charges provided for in section 437D-8.4. The lessor shall disclose as part of any quotations of price, including all quotations contained in advertising or by telephone, all payments a lessee must make in order to rent the vehicle, including all charges provided for in section 437D-8.4.