The Big Items
The financial bleed in Kahului isn't a slow trickle; it is a severed artery, and the primary drain is housing. The median home price of $833,200 is a sticker shock number that requires a massive down payment or a salary that defies standard debt-to-income ratios. Buying a home here is currently a trap for anyone without equity from a previous market. With mortgage rates hovering in the 6.5% to 7.0% range, the monthly principal and interest alone on a median home approaches $5,200, not including property taxes or insurance. The "island discount" on property tax is a myth for the average buyer; while owner-occupants get a lower rate (around $2.71 per $1,000 of assessed value), the assessed value on a $833,200 home pushes that annual bill over $2,200 easily. Renting is no savior. Due to strict zoning and the massive demand from tourism and service workers, the rental market is squeezed. You will likely pay $2,400+ for a modest two-bedroom, and that is if you can find one that isn't an illegal vacation rental disguised as a long-term lease. The "market heat" here is structural; you cannot build your way out of a housing crisis on an island with limited developable land.
Then there is the tax bite, which is significantly higher than the mainland. Hawaii has a progressive income tax that hits the middle class hard. A single earner making $50,634 is looking at a marginal bracket that eats roughly 6% to 7.25% of their income, depending on deductions. There is no "break" here. The General Excise Tax (GET) is the hidden tax that nickel-and-dimes you on everything. It is 4% on Oahu and 4.5% on Maui, and unlike sales tax, it applies to gross receipts. That means the contractor charges you the GET, the wholesaler charges the GET, and the final bill passes it all to you. When you buy a $10.00 coffee, you aren't paying a sales tax; you are paying the overhead of the tax chain all the way back to the bean. You effectively pay a premium on every transaction in the state, raising your effective tax burden by another 3% to 5% annually on discretionary spending.
Groceries and gas are the final heavy hitters in the "Big Three." Do not compare Kahului prices to the US national baseline; it is a waste of time. A gallon of milk will run you $6.50 to $7.00. A carton of eggs is $7.00 to $9.00. This isn't price gouging; it is the "Geographic Isolation Surcharge." Everything arrives via barge or plane, and fuel costs dictate the price of every item on the shelf. You are paying for the logistics of moving goods across 2,500 miles of ocean. Gasoline prices in Kahului fluctuate wildly but consistently sit $1.00 to $1.50 higher per gallon than the national average. If you have a standard commute of 15 miles round trip in a sedan getting 30 MPG, you are looking at a weekly fuel cost of roughly $40.00, which adds up to $2,080 a year just for basic transit. This variance is not a line item you can budget away; it is a fixed cost of existing on Maui.