
The deadline is September 30. It does not move, it is not prorated, and it is not retroactive.
If you own and live in your home on Oʻahu or Kauaʻi and you have never filed a home exemption, this is the video to watch before the end of the month.
I’m Jason Wong, President and Principal Broker of Island Dragonfly. This is the least glamorous segment I will ever record and probably the most valuable.
What the exemption actually does
On Oʻahu, the home exemption subtracts $120,000 from your assessed value if you are under 65, and $160,000 if you are 65 or older. Effective July 1, 2027, those amounts increase to $140,000 and $180,000.
But the deduction is not the real prize. The exemption is what keeps your property in the Residential class at $3.50 per $1,000 instead of Residential A, where the portion of value above $1,000,000 is taxed at $11.40 per $1,000. On a property near or above a million dollars in assessed value, the classification effect is worth far more than the deduction itself.
Who qualifies on Oʻahu
You occupy the property as your principal home for more than 270 days a year, and you file by September 30 for the following tax year. If you already have an exemption on file and nothing about your ownership or use has changed, you do not need to reapply.
The part that catches sophisticated people
You have a duty to report any change within 30 days of the property ceasing to qualify. Moved out and rented it. The person who qualified passed away. Started using it as a short-term rental. All reportable. Failing to report is not a neutral act.
The one I see most often involves estate planning. Owners transfer into a trust for entirely sound reasons, and nobody thinks about the assessment file. I am not going to tell you a trust automatically kills your exemption — that depends on how the trust is written. I am telling you it is a change in how title is held, and you want to raise it with the Real Property Assessment Division before you get the bill, not after.
Different islands, different calendars
Kauaʻi is also September 30, covering exemption claims and recordation of ownership documents. Maui reduces taxable assessed value by $300,000, deadline December 31. Hawaiʻi County runs December 31 and June 30 — file between January and June and the benefit starts the following January; file between July and December and it starts the following July. Miss it by a week and you wait six months.
Statewide: one exemption per household. Your spouse cannot claim one somewhere else.
None of this substitutes for professional advice. Every figure here comes from a public county or state source, and every one of them can change. Verify with your county and bring a tax attorney or CPA into the conversation before you sign anything.
🔗 https://jasonwong.us · https://islanddragonfly.com
Jason Wong (PB), MBA — License #RB-22819 · Island Dragonfly LLC — License #RB-24348 Serving Oʻahu, Maui, Hawaiʻi Island, Kauaʻi, Molokaʻi and Lānaʻi.
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