South Korea Mortgage Guide 2026: Jeonse, LTV/DTI Limits, and Bogeumjari
The South Korean housing market is uniquely defined by the "Jeonse" (key money deposit) system, which heavily influences property pricing and financing. Standard residential mortgages (Jutaek Dambo Daechul) are strictly regulated by the FSC to curb household debt in Seoul, with strict zoning rules dictating your borrowing limits. This guide details the 2026 regulations.
How Much Can You Borrow in South Korea?
Borrowing limits in South Korea depend heavily on the location of the property (Speculative Zones vs. Non-Speculative Zones) and your income.
Loan-to-Value (LTV) Limits
Seoul and Speculative/Overheated Zones: Maximum 50% LTV for standard buyers. You need a massive 50% down payment in cash.
Non-Speculative Zones: Maximum 70% LTV.
First-Time Buyers (Muju-taek-ja): Can access up to 80% LTV regardless of the zone, up to a maximum loan limit of 600 million KRW.
Debt Service Ratio (DSR) Limits
The FSC enforces strict DSR limits to constrain household debt. Your total annual debt repayments (mortgage, credit cards, auto loans) cannot exceed 40% of your gross annual income.
For non-bank financial institutions (e.g., insurance companies), the DSR limit is slightly higher at 50%.
Use the affordability calculator to determine your maximum loan size based on the strict 40% DSR limit.
South Korean Mortgage Types
Variable Rate (Byeondong Geumri): Historically popular. Tied to the COFIX (Cost of Funds Index), which reflects the average funding costs of Korean banks. Rates update every 6 or 12 months.
Fixed Rate (Gojung Geumri): Usually fixed for 5 years before reverting to a variable rate (Mixed Rate). The government strongly encourages banks to issue fixed-rate loans to protect households from rate shocks.
Bogeumjari Loan (Government-backed): A highly subsidized, long-term (up to 50 years) fixed-rate mortgage provided by the Korea Housing Finance Corporation (KHFC). Designed for low-to-moderate-income earners buying homes under 600 million KRW.
Current South Korean Mortgage Rates (2026)
Following Bank of Korea (BOK) rate adjustments, typical 2026 rates are:
| Variable Rate (COFIX-linked) | 4.20% to 4.70% |
|---|---|
| 5-year Fixed (Mixed Rate) | 3.80% to 4.30% |
| Bogeumjari Loan (Fixed) | 3.20% to 3.50% (varies by term and income) |
*Rates are illustrative averages as of September 2026.*
Closing Costs and Taxes
Closing costs are moderate, driven primarily by the Acquisition Tax.
| Acquisition Tax (Chwideukse) |
|---|
Homes under 600M KRW: 1.0% + local surcharges (Total ~1.1%).
Homes 600M to 900M KRW: 1.01% to 2.99% (sliding scale).
Homes over 900M KRW: 3.0% + local surcharges (Total ~3.3%).
Multiple Homeowners: Face punitive taxes, up to 8% to 12% depending on the zone.
Other Buyer Costs:
| Real Estate Agent Fee (Bokbi) | Regulated sliding scale, typically 0.4% to 0.9% depending on property value. |
|---|
National Housing Bonds (Gungmin Jutaek Chaegwon): Mandatory purchase, though most buyers instantly sell them at a small discount (loss) to avoid holding them.
| Registration Tax & Legal Fees | Approx. 0.2% to 0.3%. |
|---|
Use the budget calculator to estimate your exact cash required to close in South Korea.
The South Korean Mortgage Process
What is the Jeonse System?
A unique Korean lease system where the tenant gives the landlord a massive lump-sum deposit (often 50% to 80% of the property value) instead of monthly rent. The landlord invests the money and keeps the interest. At the end of the 2-year lease, the landlord returns the exact deposit to the tenant.
What is "Gap Investment" (Gap Tuja)?
Gap Tuja (Gap Investment) is a leveraged property acquisition strategy unique to South Korea that utilizes the Jeonse tenant deposit system. An investor purchases a residential apartment that is currently tenanted under a Jeonse lease, requiring cash equity only to fund the difference (“the gap”) between the total purchase price and the tenant's security deposit. For instance, if an apartment costs 900 million KRW and the active Jeonse deposit is 700 million KRW, the buyer only funds 200 million KRW out-of-pocket, assuming the statutory liability to refund the 700M KRW deposit at the end of the tenancy term.
ℹ️ Statutory Notice & Methodology
Global Finance Calc provides mathematical estimates for education, planning, and comparison — not regulated financial advice or credit pre-approval. Tax legislation, statutory central bank buffers, and underwriting criteria change. Confirm critical figures with official regulatory publications or a licensed mortgage broker before signing contracts.