Hawaii Capital Gains Tax, Explained

Most states either tax gains as ordinary income outright, or carve out a percentage exclusion. Hawaii does something structurally different: under HRS Section 235-51(f), individuals, estates, and trusts with a net long-term capital gain get to run the numbers two ways and pay whichever is lower. The first way taxes everything, wages and gains alike, at your regular graduated bracket. The second way taxes your ordinary income at the regular brackets, but applies a flat 7.25% to the net long-term capital gain instead. Whichever total is smaller is what you owe. This "alternative tax" structure is unusual nationally and is Hawaii's defining feature for anyone selling an appreciated asset.

Because Hawaii's ordinary brackets climb all the way to 11% (over $325,000 taxable income for single filers, $650,000 married filing jointly), the 7.25% alternative rate is a real discount for anyone already in the upper brackets, roughly a 3.75-point gap. Below that crossover point, where your ordinary bracket rate is already under 7.25%, the alternative election doesn't help and the regular computation wins on its own. Below the crossover, most filers pay ordinary rates on gains anyway since the alternative tax never produces a lower number.

Worked example: a Honolulu seller in the top 11% bracket realizes a $200,000 long-term gain from selling appreciated stock held for several years. Taxed as ordinary income, that gain alone would add $22,000 to the state bill. Electing the alternative computation instead taxes that $200,000 at the flat 7.25% rate, for $14,500, a difference of $7,500 in Hawaii tax on this one gain. Tax software and most preparers apply the lower number automatically, but the mechanic is worth understanding before you price a sale, since it changes what "Hawaii's tax bite" actually means for a capital transaction versus ordinary income.

Hawaii runs 12 individual income tax brackets, more than any other state, starting at 1.40% and climbing to 11.00% at the top. For single filers, that top rate applies above $325,000 of taxable income; for married filing jointly, above $650,000. A 2024 law (Act 46, the Green Affordability Plan) is widening these brackets in phases through 2031, which will gradually reduce the ordinary-rate bite for middle earners, but the 11% top rate itself has stayed in place.

This is the backdrop that makes the 7.25% alternative rate meaningful. Short-term gains, wages, bonuses, and business income all run through these ordinary brackets with no ceiling below 11%. Only net long-term capital gains get to opt into the flatter, lower alternative computation. For a high-income Hawaii household, the practical planning question is rarely "how do I avoid Hawaii tax," it's "how do I make sure this income qualifies as a long-term capital gain instead of ordinary income."

Hawaii's 7.25% alternative rate only ever touches the state return. The federal government still taxes the same gain under its own rules: 0%, 15%, or 20% for long-term gains depending on your bracket, and the 3.8% net investment income tax layered on above $200,000 MAGI (single) or $250,000 (married filing jointly).

Put the two systems together and a high-income Hawaii seller's true all-in rate on a long-term gain runs close to 31%: 20% federal plus 3.8% NIIT plus 7.25% Hawaii. That's a meaningfully lower combined number than a same-earner California or New York seller faces, even though Hawaii's ordinary brackets look just as steep on paper.

The planning takeaway: everything that keeps a sale in long-term territory, patience past the one-year mark, loss harvesting, or an installment sale that spreads the gain across years, keeps you on the 7.25% side of Hawaii's alternative computation instead of the ordinary brackets.

Sell Hawaii real estate as a nonresident, and the buyer is required to withhold 7.25% of the amount realized (generally the sales price, not just the gain) and remit it to the state on Form N-288. This is HARPTA, the Hawaii Real Property Tax Act, and the 7.25% figure is not a coincidence, it was set to mirror the same rate used in the capital gains alternative tax under HRS 235-51(f). The rate was raised from 5% to 7.25% effective September 2018.

HARPTA withholding is a prepayment, not a separate tax. If your actual Hawaii tax liability on the sale is less than 7.25% of the full sales price, which is common since the withholding applies to the gross proceeds rather than just the gain, you get the difference back when you file your Hawaii nonresident return. Sellers who don't want to wait for a refund can apply for a withholding certificate on Form N-288B before closing, which lets escrow withhold closer to the actual tax owed instead of the full statutory amount.

Hawaii's vacation-rental and short-term-rental market means this comes up constantly. When you sell a rental property, the gain splits into two pieces. The depreciation you claimed while renting the property comes back as recapture, characterized as ordinary income for federal purposes (taxed at up to 25% federally under the unrecaptured Section 1250 rules) and taxed by Hawaii at your regular ordinary bracket, not the 7.25% alternative rate. Only the appreciation above your depreciated basis is eligible for the alternative computation.

Worked example: sell a Maui condo used as a short-term rental for a $300,000 total gain, of which $80,000 is depreciation recapture and $220,000 is appreciation, and you're in Hawaii's top bracket. The $80,000 recapture is taxed at the ordinary 11% rate, $8,800. The $220,000 appreciation qualifies for the 7.25% alternative rate, $15,950. Hawaii total: $24,750, plus the separate HARPTA withholding calculated on the full sales price at closing, which gets reconciled against this actual liability when you file.

A large share of Hawaii real estate capital gains come from out-of-state owners, mainland investors, and part-time residents selling condos and vacation homes in markets like Maui, Kailua-Kona, and Waikiki. For this group, HARPTA and the alternative capital gains rate interact in ways a full-time resident rarely has to think through: withholding is calculated by an escrow company that may not know your full tax picture, and the eventual state tax bill depends on the same 7.25% versus ordinary-bracket comparison as any other Hawaii long-term gain.

Primary residences still get the federal Section 121 exclusion ($250,000 single, $500,000 married filing jointly) if you lived in the property two of the last five years, which Hawaii follows for state purposes. A true vacation home that was never your primary residence gets no such exclusion, and the full gain runs through the alternative-rate math above.

Full guide: Capital Gains Tax on a Business Sale.