Revenue generated by Hawaii’s gas taxes is declining because more Hawaiians are driving electric and hybrid vehicles. The RUC is designed to provide “fair, long-term, sustainable funding for Hawaii’s roads,” according to the Department of Transportation.
On July 1, 2025, Hawaii will implement a state electric vehicle (EV) mileage tax. Revenue generated from the road usage charge, or RUC, will help fund state transportation projects and road infrastructure.
For now, the RUC is optional: EV owners may continue to pay a flat $50 annual surcharge instead. In Maui Country, EV owners will continue to pay a $100 annual county registration surcharge as well…