HARPTA vs FIRPTA: Understanding Both Withholding Taxes When Selling Aulani DVC

I've worked with hundreds of Aulani DVC sellers over the years, and the single biggest source of confusion is the difference between HARPTA and FIRPTA. People use the names interchangeably, assume they're the same thing, or don't realize they might owe both. They're not the same. And if you're a non-US person selling an Aulani timeshare contract, you're almost certainly subject to both of them, which means 22.25% of your sale price gets held back at closing before you see a dime of your proceeds.

That's a big number. On a $28,000 Aulani contract, it's $6,230 withheld. On a $35,000 contract, it's $7,787.50. Money that could take months to get back if you don't understand the process, or money you might never see again if you don't file at all.

This post breaks down exactly how HARPTA and FIRPTA work, who faces which tax (and who faces both), what you'll actually owe versus what gets withheld, and how to get your refunds back from two different government agencies. I've included real dollar examples, a comparison table, and the filing strategy that gets your money back fastest.

What is FIRPTA?

FIRPTA stands for the Foreign Investment in Real Property Tax Act. It's a federal law, enforced by the Internal Revenue Service (IRS). FIRPTA requires that when a "foreign person" (someone who is not a US citizen, US national, or US resident alien) sells US real property, the buyer must withhold 15% of the gross sale price and send it to the IRS.

The key word there is "foreign person." FIRPTA does not apply to US citizens. It does not apply to US green card holders. It does not apply to people who qualify as US resident aliens for tax purposes. It only applies to non-US persons, what the IRS calls "nonresident aliens" and foreign corporations, partnerships, trusts, and estates.

For Aulani DVC sellers, this means FIRPTA kicks in if you're a Canadian citizen living in Toronto, a British citizen in London, an Australian in Sydney, or any other non-US person. A Californian selling Aulani? No FIRPTA. A Texan? No FIRPTA. A Japanese citizen who bought Aulani on vacation? FIRPTA applies.

The withholding goes to the IRS within 20 days of closing via Forms 8288 and 8288-A. The seller then files a US tax return (Form 1040-NR) after the end of the tax year to report the sale, calculate the actual tax on the gain, and claim a refund of the excess withholding.

What is HARPTA?

HARPTA stands for the Hawaii Real Property Tax Act, codified in Hawaii Revised Statutes Section 235-68. It's a state-level withholding requirement enforced by the Hawaii Department of Taxation. HARPTA requires 7.25% of the gross sale price to be withheld when Hawaii real property is sold by someone who isn't a Hawaii resident.

Here's where HARPTA trips people up: it applies much more broadly than FIRPTA. HARPTA doesn't care about your citizenship or nationality. It cares about whether you live in Hawaii. A US citizen in California selling Aulani? HARPTA applies. A US citizen in New York? HARPTA applies. A Canadian? HARPTA applies. A Hawaii resident who's lived on Oahu for ten years? HARPTA does not apply (assuming they meet the exemption requirements).

The only sellers exempt from HARPTA are Hawaii residents who have maintained their principal place of abode in Hawaii for the two tax years preceding the sale and the sale price is $300,000 or less. Every Aulani DVC contract meets the price threshold, so it comes down to residency. If you don't live in Hawaii full-time, you're subject to HARPTA. Period.

If you want the full rundown on HARPTA by itself, I've written a complete guide to HARPTA for Aulani DVC sellers that covers every detail.

Who Faces Which Tax: The Overlap Problem

This is where it gets interesting. There are three groups of Aulani sellers, and each one faces a different combination of withholdings:

Group 1: US citizens or resident aliens living outside Hawaii. This is the largest group of Aulani sellers. A family in California, a couple in Florida, a retiree in Arizona. They're US persons, so FIRPTA doesn't apply to them. But they don't live in Hawaii, so HARPTA does apply. Total withholding: 7.25%.

Group 2: Non-US persons (not Hawaii residents). This is the double-hit group. A Canadian family, a British couple, a Japanese investor. They're not US persons, so FIRPTA applies at 15%. They're not Hawaii residents, so HARPTA applies at 7.25%. Total withholding: 22.25%. This is the group that gets the biggest shock at closing.

Group 3: Hawaii residents. If they've lived in Hawaii for at least two full tax years and the sale is under $300,000, they're exempt from HARPTA. They're US persons (assuming they're citizens or green card holders), so FIRPTA doesn't apply either. Total withholding: 0%. They still owe Hawaii income tax on any gain, but there's no withholding at closing.

HARPTA vs FIRPTA: Side-by-Side Comparison

The critical difference most people miss: FIRPTA only applies to non-US persons, but HARPTA applies to virtually everyone who doesn't live in Hawaii.

Complete Worked Example: $28,500 Aulani Sale with Both Withholdings

Let's walk through a real scenario. A Canadian couple bought 160 Aulani points direct from Disney in 2019 for $22,400. They've decided to sell. The resale market values their contract at $28,500.

At Closing

The sellers walk away from closing with $20,258.75. Over $6,300 is sitting with two government agencies as tax deposits.

Calculating Actual Taxes Owed

• Sale price: $28,500
• Cost basis (original purchase price plus closing costs): $22,400 + $800 = $23,200
• Selling expenses (broker commission + closing costs): $1,500 + $400 = $1,900
• Adjusted gain: $28,500 minus $23,200 minus $1,900 = $3,400

Federal tax (FIRPTA): The gain of $3,400, held longer than one year, is taxed at the 15% long-term capital gains rate. Federal tax owed: $510.

Hawaii tax (HARPTA): Hawaii taxes non-resident capital gains at graduated income tax rates. On a $3,400 gain, the effective Hawaii rate is roughly 5.5%. Hawaii tax owed: approximately $187.

Total actual tax: $697.

The Refund Math

These sellers had $6,341.25 withheld but only owe $697 in combined tax. The refund of $5,644.25 is nearly 90% of what was withheld. That's not unusual. I see these ratios regularly. Use our HARPTA tax estimator to run the numbers on your own Aulani sale.

The Double Refund Process: Filing Strategy That Works

When you're owed refunds from both Hawaii and the IRS, the order you file matters.

Step 1: File Hawaii Form N-288C First (Immediately After Closing)

The biggest advantage of the Hawaii N-288C filing is that you don't have to wait for anything. The day after your sale closes, you can start preparing Form N-288C. Gather your closing statement, your original purchase documents, and your copy of Form N-288 from the closing agent. Complete the N-288C, calculate your Hawaii tax on the gain, and mail it to the Hawaii Department of Taxation.

Hawaii typically processes N-288C applications in 3 to 6 months. For more details on the filing process, check out our guide on how to file for your HARPTA refund.

Step 2: File Federal Form 1040-NR (After December 31)

The federal FIRPTA refund requires filing Form 1040-NR, which can't be filed until after the tax year ends. If your Aulani sale closed in March, you have to wait until the following January to file. If it closed in November, you only wait a couple of months.

Why Hawaii First?

Simple: speed. You can file the N-288C the week after closing. The 1040-NR has to wait for the calendar year to end. By filing Hawaii first, you start the clock on that refund immediately. For a sale closing in April, the timeline might look like this:

• May: File Form N-288C with Hawaii
• August to October: Receive Hawaii HARPTA refund (~$1,879)
• January (following year): File Form 1040-NR with the IRS
• May to July (following year): Receive federal FIRPTA refund (~$3,765)

The Canadian Triple Tax Situation

Canadians make up a significant portion of non-US Aulani sellers, and their situation is uniquely complicated. On top of FIRPTA (15%) and HARPTA (7.25%), Canadian sellers also have to report the Aulani sale to the Canada Revenue Agency on their T1 return.

The good news: the Canada-US Tax Treaty and Canada's foreign tax credit system prevent you from paying tax three times on the same gain. If this applies to you, I'd strongly recommend reading our detailed guide for Canadian DVC owners selling Aulani.

When Professional Help Makes Sense

If you're a US citizen who only faces HARPTA, the N-288C is a one-page form. Many sellers handle this on their own. Professional cost for just the Hawaii filing: $300 to $600. Typical refund: $1,200 to $1,800.

If you're a non-US person facing both FIRPTA and HARPTA, it gets more complicated. Professional cost for both filings: $800 to $2,000. Combined refund: typically $3,000 to $5,500. The math strongly favors hiring someone.

Look for a tax professional who specifically handles both FIRPTA returns and Hawaii state filings. Not every CPA knows Hawaii's forms, and not every Hawaii preparer understands FIRPTA. You want someone who does both routinely.

Don't Leave Money on the Table

The combined HARPTA and FIRPTA withholding on an Aulani DVC sale is substantial. But the withholdings are deposits, not final taxes. Your actual tax liability is almost always a fraction of what was withheld.

File your refund claims. Start with Hawaii (Form N-288C, immediately after closing). Follow up with the IRS (Form 1040-NR, after year-end) if FIRPTA applied. Use our HARPTA tax estimator to see what your specific withholding and estimated refund look like, or visit our Form N-288C guide to start the refund process today.