If you own property in Hawaii, or you're thinking about buying, the rules just changed. New county property tax rates took effect statewide on July 1, and the message from every island is the same: if you live in your home full-time, you're being protected. If you don't, you're picking up a much bigger share of the bill.
The Big Picture
Hawaii has always kept residential property taxes low compared to the mainland, since the state funds schools and highways at the state level rather than through property tax. Counties make up the difference elsewhere, including higher taxes on tourism and short-term rentals. The 2026 changes lean into that pattern harder than ever, widening the gap between owner-occupied homes and everything else: second homes, vacation rentals, and investment properties.
On Oahu, an owner-occupant gets a $120,000 exemption and a rate around $3.50 per $1,000 of assessed value. A non-owner-occupant on the same street can pay a rate two to three times higher. Run the math on a $1.5 million home and an owner-occupant lands around $4,800 a year, while an investor without an exemption is closer to $9,700, nearly double, on the identical property.
Maui and the Big Island push the divide even further for short-term vacation rentals. On Maui, a $1.5 million home operated as a nightly rental can carry an annual tax bill north of $17,000. Both counties added incentives that reward converting a short-term rental into a long-term lease, cutting that rate substantially for owners willing to house local renters instead of tourists.
Deadlines That Actually Cost You Money
The single most common mistake buyers make: assuming escrow or their agent files the homeowner exemption automatically. They don't. You have to file it yourself with your county tax office, and missing the window means paying the higher, non-owner-occupied rate for an entire year.
- Oahu: file by September 30
- Maui and Hawaii County (Big Island): filing windows twice a year, June 30 and December 31
- Kauai: check with the county, as rates and thresholds shifted this cycle too
If you closed on a home in the past year and haven't confirmed your exemption is filed, this week is a good time to call your county tax office.
Conveyance Tax Changes Matter at Closing Too
Alongside the annual property tax shift, Hawaii's one-time conveyance tax, paid at closing, moved from a simple two-tier system to a more gradual, tiered structure based on price and residency status. It mostly affects higher-value sales, but sellers pricing a home near an old threshold should double-check the math with their agent before setting a list price. In some cases a slightly lower price nets more in your pocket after taxes than holding firm a few thousand dollars higher.
What This Means If You're Buying
If you're planning to live in the home, these changes are good news: exemptions are rising and owner-occupied rates remain some of the lowest in the country. If you're buying as an investment or second home, build the higher non-owner-occupied rate into your cash flow projections before you make an offer, not after closing.
What This Means If You're Selling
If your buyer pool includes investors, expect them to be running tighter numbers on carrying costs than they were a year ago. And if you own a vacation rental yourself, it's worth pricing out what converting to a long-term lease would save annually versus what you'd give up in nightly rate income.
Every county sets its own rates and exemption rules, and they can change again next cycle. If you want a read on how this affects a specific property or a sale you're considering, that's exactly the kind of question worth a quick call rather than a guess.