Do I owe US tax on a foreign gift from parents in Korea?

Your parents in Korea wired you money for a down payment on a house in Irvine. Or they want to retitle their Gangnam apartment into your name before they retire. The reflex worry is always the same: “Do I owe US tax on this?” In our Los Angeles CPA practice a foreign gift from parents is one of the most common cross-border filings Korean-American clients get wrong — not because they underpay tax (they almost never owe any), but because they skip a report the IRS treats as mandatory. Here is what actually applies, straight from the IRS primary guidance, and what you still need to file in 2026.

Does US gift tax apply to a foreign gift from parents? 🧾

In nearly every case, no. US gift tax is paid by the donor, and a nonresident parent in Korea is only subject to US gift tax on tangible property that is physically located inside the United States at the moment of the gift.

The relevant rule is in 26 USC §2501(a)(2): the gift tax does not apply to the transfer of intangible property by a nonresident who is not a US citizen. A separate rule in 26 USC §2511(a) excludes tangible property situated outside the United States from US gift tax when the donor is a nonresident alien. Read together, almost every typical Korean-parent gift falls outside the US gift tax entirely:

• Won wired from a Korean bank to your US bank: cash in a Korean account is intangible personal property. Not subject to US gift tax.
• Korean apartment deed transferred to you: real estate located in Korea. Not subject to US gift tax.
• Korean mutual funds or KOSPI shares re-registered to your name: non-US intangibles. Not subject to US gift tax.
• Suitcase of US dollars physically handed to you in LAX: this is tangible property with US situs. The donor becomes subject to US gift tax above the annual exclusion. We have never recommended this delivery method, and now you know why.

A separate Korean gift tax (증여세) applies on the Korean side under Korean law. That is a filing with the Korean NTS, not the IRS, and sits outside the scope of this guide — we cite only US primary sources per our editorial policy, so verify the Korean side with a Korean practitioner.

When does Form 3520 reporting kick in on a foreign gift from parents? 📬

You file Form 3520 if the aggregate of foreign gifts you received from your Korean parents (and anyone the IRS treats as related to them) exceeds $100,000 during the calendar year.

The thresholds come straight from the IRS “Gifts from Foreign Person” guidance and the Form 3520 instructions:

• Gift from a nonresident alien individual or foreign estate: aggregate above $100,000 in the calendar year. Once the threshold is crossed, you must separately identify every gift greater than $5,000.
• Gift from a foreign corporation or foreign partnership: aggregate above $20,573 for 2026 ($20,116 for 2025 — the number is inflation-adjusted annually). Rare for a direct parent gift, but it comes up when the parent gives through a Korean family holding company.
• Aggregation across related parties: a $60,000 wire from Mom plus a $60,000 wire from Dad is $120,000 total and crosses the threshold. The IRS also combines gifts from anyone it can reasonably treat as related to the same donor group — grandparents, siblings, a family trust.
• Timing is calendar year, not per transaction: four $30,000 wires in the same year aggregate to $120,000 even if each wire looks small on its own.

A common misreading is to assume Form 3520 is a tax return. It is not. It is an information return. In our practice nothing is paid with Form 3520 for a parent gift from Korea — but it still has to be filed, and the penalty for omitting it is calibrated to the gift, not to any tax underpayment.

What if my parents transfer their Korean apartment to me? 🏢

No US gift tax to anyone, but you report the apartment’s fair market value on Form 3520 Part IV once your total foreign gifts from parents cross $100,000, and you inherit their cost basis for your eventual sale.

Non-US real estate transferred by a nonresident parent is excluded from US gift tax under §2511(a). On the recipient side, two moving parts matter for the US:

• Basis is carryover, not stepped-up. Under 26 USC §1015 you take the donor’s cost basis. If your parents bought the apartment for ₩300M and gifted it to you when it was worth ₩900M, your basis for a later US sale is roughly ₩300M translated to USD at the date-of-gift Treasury rate, not ₩900M. The gain is tracked against that basis when you eventually sell.
• Holding period tacks on. You inherit the parents’ holding period, so a long-held Korean apartment is long-term capital gain property to you from day one.
• Report on sale, not on receipt. There is no US income tax on receipt. When you sell, the gain goes on Schedule D with Form 8949. Any Korean capital gains tax paid can usually be claimed on Form 1116 as a foreign tax credit, subject to the general-category limit.

For practical bookkeeping: keep the parents’ original purchase documents, the Korean appraisal at the date of gift, and your FX conversion worksheet. We ask clients to store these in the same folder as their Form 3520 copy — the information is not needed until the sale year, which can be 10 or 20 years later, and reconstructing it from scratch in year 20 is painful.

How do I actually file Form 3520 for a foreign gift from parents? 🗂️

Form 3520 is a standalone information return. It is filed separately from Form 1040, due on the same date (including extensions), and mailed to the IRS at Ogden, UT. It is not transmitted as part of your 1040 e-file.

Mechanics, from the Form 3520 Instructions:

• Who files: the US person recipient. A married Korean-American couple that both received from their respective Korean in-laws each file their own Form 3520.
• When: due by the Form 1040 due date, including extensions. If you file Form 4868 to extend your 1040 to October 15, your Form 3520 is extended too.
• Where: mailed to Internal Revenue Service, PO Box 409101, Ogden, UT 84409. Not e-filed, not attached to the 1040.
• What you fill in: Part IV, “US Recipients of Gifts or Bequests Received from Foreign Persons.” List each gift greater than $5,000 from a nonresident alien individual on its own line, with the date, a short description, and the fair market value in USD on the date of the transfer.
• Donor identity: the form asks for the donor’s name and address. For gifts from a nonresident alien parent, the IRS allows “nonresident alien” in lieu of a TIN. Do not leave the donor name blank.

What happens if I missed Form 3520 for a prior year? 🔧

You can usually file a delinquent Form 3520 under the IRS Delinquent International Information Return Submission Procedures with a reasonable cause statement — provided no tax was owed on the underlying gift and you are not under examination.

Two separate IRS compliance paths exist and they are often confused:

• Delinquent International Information Return Submission Procedures: file the missing Form 3520 by itself with a signed reasonable cause statement. This is the normal path for a pure 3520 gap on a Korean parent gift, because no tax was owed on the gift itself. The IRS explicitly recognizes this path when the taxpayer has no unreported income from the foreign asset.
• Streamlined Filing Compliance Procedures: for taxpayers who also failed to report foreign assets or foreign income on FBAR or Form 8938. If the Korean parent gift was wired into a Korean account you now control and you never filed FBAR on that account, Streamlined is the right lane.

In practice: collect the bank statements showing the wire date, FX rate on that date (the Treasury Reporting Rates of Exchange are the IRS-preferred source), parents’ name and address, and relationship. Draft the reasonable cause statement around specific facts, not boilerplate — “my parents in Korea did not know this was a US filing” is accurate for most families but it must be in writing on the return.

Foreign gift from parents by type — a side-by-side 📊

Different gift shapes trigger different filings. The table below is the quick decision grid we hand clients at a first consultation:

Frequently Asked Questions 🙋