Trucking Costs in Hawaii
Operating cost analysis for trucking in Hawaii, the most expensive trucking market in the United States.
Fuel Costs and Tax Rates
Hawaii has the highest fuel costs in the nation. The state diesel tax is 16.0 cents per gallon, but counties add their own taxes: Honolulu adds 16.5 cents, Maui adds 23.0 cents, Hawaii County adds 23.0 cents, and Kauai adds 17.0 cents. Combined with the 24.4-cent federal tax, total diesel taxes range from 56.9 to 63.4 cents per gallon depending on island. Diesel prices average $5.53/gallon (EIA, West Coast excluding California region, week of August 10, 2026; EIA publishes no separate Hawaii figure) — the highest in any state. A truck running 6,000 miles monthly (less than mainland due to island geography) at 6.0 MPG faces fuel costs of $5,550 per month. Inter-island freight adds barge fuel surcharges. Most fuel is imported from overseas, making prices sensitive to global oil markets and shipping costs.
Equipment and Maintenance
Hawaii's isolated location dramatically increases equipment and maintenance costs. Parts must be shipped from the mainland, adding 10-30% to parts costs and 1-2 weeks delivery time for non-stock items. Emergency parts can be air-freighted at premium cost. Shop labor rates run $110-$160 per hour — 30-50% above the mainland average. Salt air corrosion accelerates undercarriage, frame, and electrical system deterioration — budget for annual rustproofing treatments ($500-$1,000) and more frequent replacement of corroded components. Tire costs are 15-25% above mainland prices due to shipping. The limited number of truck repair facilities means less competition and longer wait times for major repairs. On neighbor islands, parts availability is even more limited.
Insurance and Registration
Annual insurance for a Hawaii-based owner-operator runs $16,000-$28,000 — the highest or near-highest nationally. Commercial vehicle registration varies by county: Honolulu charges $200-$500 based on weight. Hawaii has a state income tax ranging from 1.4% to 11% (the highest top rate in the nation), significantly impacting owner-operator earnings. The state charges a General Excise Tax (GET) of 4% (4.5% on Oahu) on gross income — this tax applies to the total revenue received, not just profit. The GET makes Hawaii unique: a carrier grossing $200,000 pays $8,000-$9,000 in GET before other taxes. This is in addition to income tax. Combined with high insurance, Hawaii has the highest total tax and compliance burden for trucking operations in the nation.
Total Cost Per Mile Analysis
Hawaii trucking costs are the highest in the nation. A paid-off truck on Oahu costs $2.20-$2.80 per mile; with payments, expect $2.45-$3.10 per mile. Neighbor island costs are 10-20% higher due to even less infrastructure. Breakdown: fuel $0.80-$1.00/mi, insurance $0.22-$0.35/mi, maintenance $0.25-$0.35/mi, truck payment $0.15-$0.25/mi, GET/taxes $0.10-$0.15/mi, overhead $0.08-$0.12/mi. The compensation: Hawaii freight rates are the highest nationally — general freight averages $4.00-$6.00/mi, and specialized hauls command $5.00-$8.00+/mi. Demand is constant since everything is imported. Owner-operators grossing $200,000-$300,000 can net $45,000-$80,000 after Hawaii's steep expenses and taxes. The high barrier to entry (shipping equipment to Hawaii) limits competition.