We are required to collect two taxes, one is the General Excise Tax which you will find is charged on any service or product in Hawaii, that is 4.166%. The other tax is the Transient Accommodations Tax (short term rentals), and that is 7.25%.
There is a Damage Deposit we collect (waived for repeat customers) which is refunded assuming you don't leave your bags of trash, take the towels or TV, stay way late past your check out -- just common sense and courtesy :).