South Korea's Real Estate Crisis Spreads to Commercial Banks as BOK Signals Rate Hikes

South Korea's Real Estate Crisis Spreads to Commercial Banks as BOK Signals Rate Hikes

South Korea's financial system is experiencing intensifying credit distress as the fallout from the real estate project financing (PF) crisis spreads from non-bank financial institutions (NBFIs) to the broader commercial banking sector. The combination of high interest rates, elevated exchange rates, and persistent inflation has pushed bank delinquency rates to a 10-year high.

Bank Delinquencies Rise to a 10-Year High

According to June 2026 data from the Financial Supervisory Service (FSS), South Korea's won-denominated loan delinquency rate (principal and interest overdue for one month or more) at domestic banks climbed to 0.61% at the end of April 2026. This represents a 0.05 percentage point increase from March (0.56%) and is the highest level recorded for the month of April since 2016 (0.64%).

The Seoul Economic Daily reported:

"South Korea's bank loan delinquency rate hit its highest level in 10 years in April, as the "three highs" of high prices, high exchange rates, and high interest rates emerged amid the Middle East crisis. With the Bank of Korea (BOK) expected to raise its base rate as early as next month, analysts say measures such as managing vulnerable companies are needed."

The corporate loan delinquency rate stood at 0.74%, heavily driven by small and mid-sized enterprises (SMEs), where delinquencies rose to 0.90% (SME corporations specifically reached 0.98%, approaching the 1% threshold). Meanwhile, the household loan delinquency rate rose to 0.42% at the end of April, with non-mortgage household credit loans jumping 0.07 percentage points in a single month to 0.83%.

Soaring Delinquencies at Savings Banks

While construction and real estate PF loan defaults have shown marginal improvement due to aggressive restructuring and non-performing loan (NPL) resolutions, other real estate loans to rental and development companies are deteriorating rapidly. Among South Korea's top five savings banks (SBI, Korea Investment, Welcome, OK, and Accuon), real estate loan delinquency rates have spiked dramatically:

• SBI Savings Bank: Real estate loan delinquency rate surged to 17.88%, up 10.5 percentage points from 7.38% in the same period last year. Delinquent balances rose from 88.8 billion won to 120 billion won, even as the bank reduced its total real estate loan volume.
• Korea Investment Savings Bank: Delinquency rate rose from 13.87% to 17.54% year-over-year.
• OK Savings Bank: Delinquency rate rose from 14.10% to 17.03% year-over-year.
• Welcome Savings Bank: Maintained an extremely elevated delinquency rate of 43.61% (down slightly from 44.39% in the prior year).

As noted by Ajupress:

"Industry analysts note that while the resolution of non-performing loans in real estate PF has eased issues related to PF and construction, the burden of soundness has increased for real estate loans to rental and development companies due to a sluggish rental market and delays in development projects¹."

Furthermore, credit loan portfolios at 31 domestic mid-sized and large savings banks are showing signs of severe stress, with the average delinquency rate rising to 6.93% in Q1 2026, driven by a declining repayment capacity among multi-debtors.