Quick Answer
Does HARPTA apply when you sell a house you inherited on Oahu?
Yes, and it catches most heirs off guard. Hawaii’s HARPTA law requires the buyer to withhold 7.25% of the amount realized on the sale unless the seller files an exemption form first. Inheriting the property does not exempt you automatically, and because the withholding is based on the sale price, not your actual gain, it can take a large chunk of the proceeds even when stepped-up basis means you owe little or no real tax.
By Aksana Tupalskaya | September 25, 2026
Most heirs selling an inherited Oahu home assume that because they inherited it, and because stepped-up basis usually means little real taxable gain, there is nothing to worry about at closing. That assumption is where the money goes wrong, because HARPTA withholding is calculated differently than the actual tax you may end up owing.
What HARPTA actually withholds, and why inheriting doesn’t exempt you
The Hawaii Department of Taxation requires a buyer to withhold 7.25% of the amount realized on the sale of Hawaii real property by a nonresident seller. The amount realized is not simply the sale price. It includes the fair market value of anything received and any liability the buyer assumes, so it can run higher than the check the seller expects.
Bequests are covered under a nonrecognition provision the state conforms to, but that provision requires a specific form, Form N-289, to be filed and given to the buyer. Without it, the withholding applies by default, whether or not the estate is administered in Hawaii, and whether or not the heirs live out of state.
The trap: stepped-up basis does not stop the withholding
This is the part that catches heirs specifically. An inherited property generally gets a stepped-up basis to its fair market value on the date of death, which often means the real taxable gain on a quick sale is small or close to zero. But HARPTA withholding is calculated on the amount realized, meaning the sale price, not on the gain. Unless the seller proactively files the right form, the buyer still withholds 7.25% of the full amount, and getting that money back means waiting for a Hawaii tax return to process.
The Department of Taxation’s own guidance uses a worked example of a seller with essentially no equity who still shows a large taxable gain after a refinance, which is a useful reminder that gain and cash in hand are not the same thing. For an heir, the reverse problem is more common: real basis is high because of the step-up, but the withholding still happens on the sale price unless paperwork is filed in advance.
How heirs actually avoid the withholding
There are two forms that matter here, and the timing on one of them is unforgiving. Form N-289 claims an exemption, including the bequest nonrecognition provision, and needs to be handled before or at closing. Form N-288B requests a withholding certificate when there is little or no gain, or insufficient proceeds to cover the withholding, but it has to be filed at least 10 working days before the transfer date or it will not be approved in time. Filing it the week of closing is too late.
If the withholding already happened because none of this was filed in time, Form N-288C requests a refund after closing, but that means waiting for the state to process a return rather than keeping the money at the closing table.
| Form | What It Does | Timing |
|---|---|---|
| Form N-289 | Claims an exemption from withholding, including the bequest/inheritance nonrecognition provision | Must be completed and given to the buyer at or before closing |
| Form N-288B | Requests a withholding certificate for no gain or insufficient proceeds | Must be filed at least 10 working days before the transfer date |
| Form N-288C | Requests a refund of withholding already collected | Filed after closing, as part of a Hawaii tax return |
| Withholding rate if nothing is filed | 7.25% of the amount realized, held by the buyer | Applies automatically at closing with no advance paperwork |
What this tells me as the agent working with out-of-state heirs: the paperwork is the whole game here. The tax owed is often small once basis steps up, but the withholding does not know that unless the right form reaches the buyer before closing.
Frequently Asked Questions
Is HARPTA an extra tax on top of what I already owe?
No. HARPTA is an estimated withholding, credited toward your actual Hawaii tax liability. If the withholding is more than you owe, the excess is refundable, but only after you file a Hawaii return.
Does HARPTA apply if the heirs are Hawaii residents?
HARPTA applies to nonresident sellers. If every heir is a Hawaii resident, Form N-289 can establish that, but the state has been explicit that this is a common point of confusion, so do not assume it without filing the form.
What if we sell quickly and there’s almost no gain?
That is exactly the situation Form N-288B is built for, a withholding certificate for no or limited gain, but it must be filed at least 10 working days before the transfer date. Filed later, it will not be approved in time and the full withholding applies.
Who actually files these forms, the heirs or the estate?
This depends on the estate’s structure, and a CPA or the estate’s attorney should confirm who is the seller of record for HARPTA purposes before closing. This article is general information, not tax advice for your specific situation.
HARPTA on an inherited property is a paperwork problem with a hard deadline, not a tax problem you cannot solve. The forms exist specifically for situations like this, they just have to be filed on time.
If you are heading toward closing on an inherited Oahu home and want to make sure the withholding side is handled correctly, I offer a free 20-minute strategy call to talk through the timeline and connect you with the right questions to ask a CPA. Book a time here.
I also cover the mechanics of avoiding HARPTA entirely through a like-kind exchange in this piece on 1031 exchanges for out-of-state Oahu sellers, and the first steps after inheriting an Oahu home are in this companion post.
