Fixed-rate home loans could breach 8% if Bank of Korea raises benchmark rate; variable-rate borrowers also face sharply higher monthly payments amid tighter lending caps and Middle East-driven inflation fears
![Concerns are growing over rising interest burdens for borrowers as US Treasury yields surge on inflation fears tied to the prolonged Middle East conflict. Pictured is a loan counter at a bank branch in Seoul. [Yonhap]](https://wimg.heraldcorp.com/news/cms/2026/06/09/news-p.v1.20260519.e21423d4d06a4c7a904ed23ab3d73f07_P1.jpg)
Park, an office worker who began shopping for a home loan in April, had been eyeing a 300 million won ($194,000) mortgage at an annual rate of 6 percent — a 30-year equal-installment loan that would have cost him about 1.8 million won a month. But as market rates climbed on the back of the Middle East conflict, he held off, hoping conditions would stabilize.
More than a month later, rates have refused to come down. With cease-fire negotiations deadlocked and the government tightening household lending caps, fixed-rate mortgage rates have risen to around 7 percent annually, pushing his estimated monthly payment to about 2 million won under the same loan terms. Some analysts now warn rates could exceed 8 percent if the Bank of Korea raises its benchmark interest rate, a scenario that is increasingly being discussed. Park says he is unsure whether to take out the loan now or wait any longer.
Kim bought a home at the end of last year and took out a 300 million won variable-rate mortgage at 5 percent annually, paying about 1.6 million won a month on a 30-year equal-installment basis. His bank recently notified him that his monthly payment would rise to about 1.8 million won after his applied rate moved up to 6 percent in line with rising market rates. If the variable rate climbs further to 7 percent annually — a possibility should the Bank of Korea raise its benchmark rate — his monthly payment could reach 2 million won.
Bank lending rates are rising quickly as inflationary pressure from the prolonged Middle East conflict combines with the government's tightened household loan volume caps. Should a benchmark rate hike materialize in the second half of the year, fixed-rate mortgage rates — currently in the mid-7 percent range — could breach 8 percent annually, analysts say.
KB Kookmin Bank raised variable-rate interest rates on its non-face-to-face mortgage products by 0.20 percentage points on Monday, according to financial industry sources. The bank said the move was "a measure to maintain an appropriate portfolio." NH NongHyup Bank had earlier raised both its fixed and variable mortgage rates by 0.20 percentage points each on June 1.
The rate increases are largely attributed to tighter household loan volume regulations imposed by financial authorities.
Regulators lowered the target growth rate for household lending across the financial sector to 1.5 percent this year, down from 1.7 percent last year. Some mutual finance cooperatives and savings banks that exceeded last year's targets were effectively barred from growing their loan balances at all this year — a so-called "zero net increase" penalty. With banks also facing reduced lending capacity, analysts say they have been preemptively raising their loan thresholds as demand spills over from second-tier lenders.
Data submitted to the office of Democratic Party of Korea lawmaker Lee In-young by the Financial Supervisory Service showed that outstanding mortgage balances at the five major banks — KB, Shinhan, Hana, Woori and NH NongHyup — fell by between 344.7 billion won and 1.6143 trillion won each compared with end-2025 levels as of the end of the first quarter. However, a rebound in the stock market in May pushed unsecured credit loan balances up by around 2 trillion won, suggesting underlying demand remains strong.
Other banks are expected to follow with rate increases of their own. When one bank raises its lending rate, borrowers tend to flock to rivals offering lower rates, creating pressure across the sector. "Some banks still have room within their loan volume limits, but the situation is such that rates have to be adjusted to prevent demand from concentrating at specific institutions," an official at a commercial bank said.
With market rates already rising on geopolitical uncertainty in the Middle East, the added weight of household lending regulations is expected to steepen the upward trajectory of borrowing costs further.
As of Monday, fixed-rate mortgage rates at the five major banks stood at 4.43 to 7.39 percent annually — up 0.17 percentage points at the lower end and 0.29 percentage points at the upper end compared with May 29, when the range was 4.26 to 7.10 percent. Fixed-rate mortgage rates have risen consistently since touching a low of 4.15 to 6.75 percent on April 17. If the Bank of Korea raises its benchmark rate in July, the upper end of the range could exceed 8 percent annually, analysts say.
According to the Korea Financial Investment Association's bond information center, the yield on five-year bank bonds — the benchmark for fixed-rate mortgages — stood at 4.473 percent annually, the highest since Nov. 13, 2023, when it reached 4.489 percent, a roughly two-and-a-half-year high.
Prospective homebuyers looking to take out new loans face a deepening dilemma. A borrower taking out 300 million won at 5 percent annually on a 30-year equal-installment basis would pay about 1.61 million won a month; if the rate rises to 8 percent, that figure climbs to 2.2 million won.
Variable-rate borrowers are also facing higher payments. As of Monday, variable-rate mortgage rates at the five major banks — based on the new COFIX — ranged from 3.96 to 6.23 percent annually, with the upper end up about 0.40 percentage points from the 3.70 to 5.87 percent range recorded on Dec. 31 last year.
A borrower who took out 300 million won at the then-upper-end rate of 5.87 percent at the end of last year — on a 30-year equal-installment basis — will see monthly payments rise from 1.775 million won to 1.846 million won once the 6.23 percent rate is applied. Should variable rates reach 7 percent on the back of a benchmark rate hike, monthly payments would climb to 2 million won.
Access to credit at second-tier lenders — a key source of financing for lower-income households — is also expected to tighten. The yield on three-year credit card company bonds, which serve as the benchmark rate for card loans, stood at 4.441 percent annually on Monday, matching a two-and-a-half-year high alongside the five-year bank bond yield. "When lending rates rise, we have to screen for borrowers who are more likely to repay as part of risk management," an official at a second-tier financial institution said. "Underwriting standards will inevitably tighten further."
As the Middle East conflict drags on and the Bank of Korea has in effect officially signaled a shift toward raising its benchmark interest rate, bank bond yields — which serve as the reference rate for bank lending — have hit their highest level in two and a half years.
hyuk@heraldcorp.com
