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US Mortgage for South Korean Buyers: Korea-Based vs Korean-American

The mortgage path for a South Korean buyer depends entirely on where they live and work. A Korean-American who is a US citizen or permanent resident accesses the full domestic US mortgage market — same terms as any US buyer. A Korean professional on an H-1B or L-1 visa in the US qualifies for a non-permanent resident conventional mortgage. A Korea-based investor buying from Seoul needs the foreign national mortgage path. The specialist identifies which profile applies in the first conversation.

Korea-Based Investors: Foreign National Mortgage

For South Koreans buying from Korea: (1) Jonghap Sodeuk Sinsogoseo: Korea’s comprehensive income tax certificate — the primary income documentation accepted by US foreign national lenders. Issued by the National Tax Service (NTS). Two years required. Certified English translation needed. (2) Korean bank reference letter: from KB Kookmin Bank, Shinhan Bank, Woori Bank, or KEB Hana Bank. (3) Passport, ITIN, bank statements: standard foreign national requirements. (4) Down payment: 25–40%. (5) DSCR alternative: Korean investors purchasing rental properties can qualify entirely on the US property’s rental income — no Korean income documentation required. Down payment: 25–30%.

Korean-Americans and H-1B Holders: Domestic Access

Korean buyers already in the US: (1) US citizens/PRs (Korean-American): full domestic mortgage access. Same terms as any US buyer. 3–5% down on conventional. US credit score and W-2/tax returns. (2) H-1B/L-1/O-1 holders: non-permanent resident conventional mortgage. Valid visa + SSN + US employment income. Similar terms to domestic buyers in most cases. (3) E-2 Treaty Investor Visa: South Korea has an E-2 treaty with the US. Korean entrepreneurs who invest substantially in a US business can apply for an E-2 visa. E-2 holders with US employment income may access domestic mortgage terms.

KRW/USD Down Payment Transfer

For Korea-based buyers transferring down payment from Korea: (1) Korea has no capital controls on outbound transfers for property purchases. (2) Korean bank wire (KB, Shinhan, Woori, Hana) to US escrow: 2–5 business days. (3) Compare rates vs international FX specialists: Korean bank spreads are typically 1–2% above interbank. On a $150,000 down payment, saving 1.5% = $2,250. (4) Declare the transfer through your Korean bank’s overseas remittance process (required for Korean tax compliance). (5) FBAR: if the down payment is held in a US account before closing, the balance may trigger FBAR reporting if above $10,000 at year-end.

Guides: US Mortgage for Koreans — FIRPTA Guide — Find an Agent

Frequently Asked Questions

How does a Korea-based investor get a US mortgage?

Foreign national mortgage: Jonghap Sodeuk Sinsogoseo (Korean income certificate), Korean bank reference letter, ITIN, 25-40% down. Or DSCR: qualifies on US rental income, no Korean income docs.

What is the Jonghap Sodeuk Sinsogoseo?

South Korea's comprehensive income tax certificate issued by the National Tax Service. The primary Korean income documentation accepted by US foreign national mortgage lenders.

Do Korean-Americans get domestic US mortgage rates?

Yes. Korean-Americans who are US citizens or permanent residents access full domestic mortgage terms — 3-5% down, standard rates, same as any US buyer.

Does South Korea have a US E-2 Treaty Investor Visa?

Yes. Korean entrepreneurs who invest substantially in a US business can apply for the E-2 visa. E-2 holders may qualify for non-permanent resident conventional mortgage terms.