A foreign professional moving to Seoul or a returning Korean-American shopping for an apartment runs into two acronyms before the appointment is over: LTV and DSR. They sound similar but cap different things, and the smaller of the two is the one that actually limits how much you can borrow. This article unpacks LTV — the property-side limit — for May 2026, and compares Korea’s 70% ceiling to the US 80% PMI line and Japan’s Flat 35 100%.
Korea’s LTV cap — 70% of property value
LTV (Loan-to-Value) is a single equation.
LTV = loan amount ÷ appraised property value
A ₩600M apartment with a 70% LTV cap means up to ₩420M of mortgage, with ₩180M (30%) coming from the borrower’s pocket. Korea’s LTV regulation has three lever variables: (1) zone (regulated vs non-regulated), (2) price band (₩600M and ₩900M thresholds), and (3) borrower status (first-time, newlywed, multi-child, newborn). The same ₩600M apartment can produce a loan limit anywhere from ₩420M down to zero depending on how those three variables combine.
In dollar terms, a ₩600M apartment is roughly $440K at the May 2026 exchange rate, and a 70% LTV cap on that is $310K of debt. The number is small by US coastal standards but Korean salaries are also smaller — Seoul’s median household income is about $55K, so the LTV-permitted debt is already 5.6x income before DSR even enters the picture.
2026 LTV table — regulated zones, first-home, newlywed
| Borrower / property | Non-regulated (provincial) | Regulated (Gangnam-3, Yongsan) | Metro non-regulated |
|---|---|---|---|
| No-home / processable-1-home | 70% | 50% | 70% (₩600M absolute cap) |
| First-time buyer | 80% (Bogeumjari, ≤₩600M) | 70% (tightened June 2025) | 70% (tightened June 2025) |
| Newlywed (+10pp) | 80% (provincial) | 60% | 70% |
| Multi-property / unprocessed-1-home | 60% | 0% (no loan) | 0% (no loan) |
As of May 2026, “regulated zones” are exactly four districts: Gangnam, Seocho, Songpa, and Yongsan in Seoul (designated as both speculation-overheated and adjustment-target zones). Everywhere else in Seoul and Gyeonggi is non-regulated, but the June 2025 measures imposed a flat ₩600M ceiling on any home-purchase mortgage in the metropolitan area, regardless of LTV math. The October 2025 follow-up tiered that further: a ₩2.5B home is theoretically eligible for ₩1.75B at 70% LTV, but the actual cap is ₩200M. For high-end Seoul properties, the price-tier cap binds long before the LTV percentage does. Buyers also need to know that any new purchase by an existing single-property owner without a six-month sale commitment drops LTV to zero — only “processable-one-home” status keeps the 70%/50% rate.
₩600M apartment, 70% LTV — what you actually pocket
Walk through the cash flow on a non-regulated, ₩600M apartment, single-property buyer.
| Line | Amount |
|---|---|
| Purchase price | ₩600,000,000 |
| LTV 70% loan limit | ₩420,000,000 |
| Equity required (30%) | ₩180,000,000 |
| Acquisition tax (1.1%) | ~₩6,600,000 |
| Broker commission (0.4%) | ~₩2,400,000 |
| Legal and registration | ~₩1,500,000 |
| Total cash needed | ~₩190,000,000 |
The “70% LTV means I only need ₩180M equity” framing is half right. Acquisition tax, broker fee, and registration push the actual cash requirement closer to ₩190M. The ₩10M gap (about $7,300) is the kind of number that gets scraped together in the last week before closing — borrowed from family, drawn from credit cards, sold from an emergency fund. It’s worth budgeting for upfront.
The +10pp first-home bonus
Stack the available bonuses on the same ₩600M property:
| Borrower type | LTV | Loan limit | Equity needed |
|---|---|---|---|
| Standard single-home (non-regulated, provincial) | 70% | ₩420M | ₩180M |
| Newlywed (married within 7 years, household income ≤₩85M) | 80% (provincial) / 70% (metro) | ₩480M / ₩420M | ₩120M / ₩180M |
| First-time buyer (Bogeumjari, ≤₩600M) | 80% (provincial) / 70% (metro/regulated) | ₩480M / ₩420M | ₩120M / ₩180M |
| Newlywed + first-time | 80% (capped, provincial only) | ₩480M | ₩120M |
The June 2025 measures tightened the metropolitan first-time LTV from 80% to 70%, so a Seoul newlywed buying a ₩600M apartment no longer gets the ₩480M loan that would have been available a year earlier. Provincial buyers still get the 80% cap. What still stacks: rate discounts (Bogeumjari 0.2–0.5pp off, Newborn Special at 1.2–3.3%) on top of whatever LTV applies — the monthly payment delta is often the bigger story than the equity delta.
The same 70% LTV label hides three quite different policy products with different price caps, loan limits, rates, and income tests:
| Product | LTV | Property cap | Loan cap | Rate | Combined income |
|---|---|---|---|---|---|
| Didimdol | 70% (80% first-time, provincial) | ≤₩500M | ₩250M (first-time ₩300M) | 2.5–3.0% | ≤₩60M (first-time ≤₩70M) |
| Bogeumjari | 70% (80% first-time, provincial) | ≤₩600M | ₩400M | 4.0–4.5% | ≤₩70M (newlywed/multi-child ≤₩85M) |
| Newborn Special | 70% (80% first-time, provincial) | ≤₩900M | ₩500M | 1.2–3.3% | ≤₩200M (temporarily raised to ₩250M through 2027) |
The most attractive combination is the Newborn Special on a ₩900M-or-under home in the lowest rate band: 1.2% (2026 floor), ₩500M loan limit. The income ceiling was raised to ₩250M for 2025–2027, opening the door to dual-income professional couples who’d been excluded under the original ₩130M test. For families that have had a baby in the last two years, this beats both Didimdol and Bogeumjari hands-down. Multi-child households tilt toward Bogeumjari, where the loan cap rises to ₩400M and a rate discount layers on. The interplay between these products and the broader child-savings landscape is covered in the child-savings primer. You can model any of these scenarios in the interest tool, which computes both the LTV cap and the DSR cap and surfaces the smaller one as the binding constraint.
LTV vs DSR — which one binds first
Here’s the pattern most Seoul buyers run into: they qualify for the LTV but not the DSR.
Effective limit = MIN(LTV limit, DSR limit)
A ₩50M-salary office worker buying a ₩600M apartment in a non-regulated zone can in theory borrow ₩420M at the 70% LTV cap. But running the DSR math:
- LTV cap: ₩420M (₩600M × 70%)
- DSR cap: ~₩330M (₩50M income × 40% DSR ÷ 30-year amortization at ~5%)
The actual cap is the smaller of the two: ₩330M. Showing up at closing with ₩180M of equity — what you’d save for a 70% LTV — leaves a ₩90M ($66K) gap. This is the most common reason first-time buyers in Seoul end up either delaying the purchase or asking parents for a “loan” that everyone knows isn’t getting paid back.
Stretching the term from 30 to 40 years drops DSR by roughly 10–15% and raises the cap to about ₩370M. The cost is in the lifetime interest, which the 30-year vs 40-year comparison piece puts at roughly ₩100M of extra interest over the life of the loan.
There’s a second trap most first-time applicants miss: existing debt — credit lines, auto loans, student loans — all goes into the DSR numerator. A household earning ₩50M with an existing ₩30M personal loan (about ₩500K/month payment) sees its mortgage DSR headroom collapse to roughly 30% of income, capping the loan around ₩250M. Cleaning out unsecured debt in the six months before applying for a mortgage often does more for your borrowing capacity than chasing the +10pp first-home bonus. Closing one auto loan can routinely free up ₩30M to ₩50M of mortgage capacity — sometimes more than rate-shopping between banks.
How Korean LTV compares to US 80% (PMI line) and Japan 100%
| Market | Standard LTV | Zero-down option | Companion ratio |
|---|---|---|---|
| 🇰🇷 Korea | 70% non-regulated / 50% regulated | None — 20% minimum equity | DSR ≤ 40% |
| 🇺🇸 US Conventional | 80% (above triggers PMI) | FHA 96.5%, VA and USDA 100% | DTI ≤ 36–43% |
| 🇯🇵 Japan Flat 35 | 90% (10% down recommended) | 100% LTV with +0.26pp rate add-on | Repayment ratio 25–35% |
US borrowers can use FHA (3.5% down), VA (zero down for veterans), or USDA (zero down in eligible rural areas) to dramatically reduce the cash requirement, with PMI absorbing the lender risk. Japan’s Flat 35 lets a borrower hit 100% LTV by simply accepting a slightly higher rate. Korea sits at the strict end of the OECD range — a deliberate policy choice to brake household leverage, which is already over 100% of GDP. The trade-off is that young Korean buyers face the highest equity hurdle in the developed world, while the country has avoided the kind of system-wide mortgage crises seen in 2008 US subprime or 1990s Japanese real estate.
For a Korean-American family relocating from California to Seoul, the math feels punitive: a couple that would have qualified for an FHA 3.5%-down loan in San Diego suddenly faces a 30% equity wall in Seoul. Reframing the comparison around DSR helps — Korea’s 40% DSR ceiling is actually similar to a US “back-end DTI” of 43%, so the income-side test isn’t dramatically tighter. It’s the equity-side test that bites.
Korea’s LTV regime has cycled twice since 2020. The June 2020 measures tightened regulated-zone LTV to 40%, gradually loosened starting November 2022, expanded with the temporary Special Bogeumjari (₩900M cap, 80% LTV) in January 2023, and added the Newborn Special in January 2024 — a steady loosening through that period. The June 2025 “household debt management” package then reversed direction: a flat ₩600M ceiling on metro home-purchase mortgages, the first-time LTV cut from 80% to 70% in metro and regulated zones, and a hard zero LTV for any new purchase by a single-property owner without a six-month sale commitment. The October 2025 follow-up added the price-tier cap (₩600M / ₩400M / ₩200M for ≤₩1.5B / ₩1.5B–₩2.5B / ₩2.5B+ homes). Because the rules now move every 6 to 12 months, anyone signing a contract should check the official FSC and HF pages for the regulation in effect on the closing date — the figures in this article are current as of May 2026 and likely to shift again.
There’s also a refinancing wrinkle worth flagging. Existing 30-year mortgages can be moved to a different bank or product within the new product’s LTV cap; equity isn’t required as long as the total balance stays under the new limit. Early-repayment fees usually run 1.0 to 1.5% of the prepaid balance within the first three years. Selling and repurchasing — common during a relocation between cities — qualifies for the “temporary two-property” allowance: as long as the original home sells within three years, the new purchase keeps single-property LTV (70%, with newlywed and first-time bonuses still available). Miss that window and the household reclassifies as a multi-property holder, dropping LTV to 0% in regulated zones. The most common failure mode is closing on the new home while the old one sits unsold in a frozen market — a situation that can force a fire-sale at the end of the three-year clock. Sequencing the sale before the purchase, even at the cost of a temporary rental, is the safer order.
Run the numbers on your own situation
The interest tool takes property price, equity, income, term, and rate, and returns the LTV cap and DSR cap side-by-side, with the binding constraint highlighted. Drop two scenarios — “standard single-home” vs “newlywed plus first-time” — into the compare panel and the ₩60M equity-reduction shows up on the same row as the rate discount and the lifetime interest difference.
Korean LTV rules look complex on first read but reduce to a single mental model: LTV is a cap on the property side, DSR is a cap on the income side, and the two get applied at the same time. Whichever is smaller is the number that matters. The trap most first-time buyers fall into is preparing for the LTV cap without checking DSR — that mistake costs the deal more often than the down payment does.