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Record Low Interest Rates Deepen Household Loan Variable Rate Concentration... 'Interest Bomb' Expected When Rates Rise

Steadily Rising to 69.4% in July
Low Interest Rate Benefits to Continue for Now
But Interest Rate Hikes Will Burden Both Households and Banks

Record Low Interest Rates Deepen Household Loan Variable Rate Concentration... 'Interest Bomb' Expected When Rates Rise

[Asia Economy Reporter Minyoung Kim] The proportion of variable interest rates in household loans has recently surged. Choosing a variable interest rate allows borrowers to benefit from the ongoing low interest rate environment and save on interest costs for the time being. However, if interest rates start to rise, the quality of household debt could deteriorate rapidly, posing a burden for both households and banks.


According to the Bank of Korea and financial authorities on the 21st, the share of variable interest rates in new household loans reached 69.4% at the end of July. This is an increase of 19.6 percentage points from 49.8% in January of this year.


The share of variable interest rates has especially increased sharply since March, when the Bank of Korea significantly cut the base interest rate to counter the economic downturn caused by the novel coronavirus (COVID-19). The variable interest rate share was 56.0% in March, rose to 61.5% in April?surpassing 60% for the first time this year?and continued to increase steadily to 63.9% in May, 69.9% in June, and 69.4% in July.

Target is 50%, Actual Approaching 70%

The Financial Supervisory Service set a target for the fixed interest rate loan ratio at 50% by the end of this year as part of the comprehensive household debt management plan announced earlier this year. This is a 2.0 percentage point increase from last year’s target of 48.0%.


The target for ‘non-grace’ installment loans, where principal and interest are repaid simultaneously, was also raised from 55.0% last year to 57.5%. Grace period loans, where only interest is paid for a certain period to reduce the burden on households, are intended to be given only to financial consumers who can repay both principal and interest from the start. Increasing fixed interest rate loans and non-grace loans helps prevent the deterioration of the quality of household loans.


The share of variable interest rates, which rose from 50-60% in 2012-2013 to the 70% range in 2017-2018, maintained the low 50% range last year but has surged again this year. Due to the base rate cuts, commercial bank loan interest rates have fallen significantly, causing an interest rate ‘inversion’ where variable rates are cheaper than fixed rates. In particular, variable interest rates on mortgage loans have dropped to the low 2% range annually, leading many consumers to seek variable rate products.

Variable Rates Rising Slightly Despite Low Interest Rates

According to the banking sector, NH Nonghyup Bank applies new COFIX (Cost of Funds Index)-based mortgage loan interest rates ranging from 2.23% to 3.64% annually. Woori Bank sets the same loan product rates between 2.28% and 3.88%, with the lowest rate in the low 2% range. Hana Bank (2.61%), KB Kookmin Bank (2.62%), and Shinhan Bank (2.64%) also have minimum rates in the mid-2% range.


Fixed interest rate products (hybrid type: fixed for 5 years then variable) from the five major banks are understood to range from a minimum of 2.35% to a maximum of 4.14%. A bank official stated, “Even with preferential rates applied, fixed interest rate loans are actually issued at just over 3%.”


The problem is that variable interest rates can rise sharply once the interest rate hike cycle begins. Generally, variable rates are advantageous during periods of falling interest rates, while fixed rates are preferable during rising rate periods. Moreover, even under low interest rates, commercial banks are gradually raising the minimum variable interest rate bands, making variable rates less advantageous. Although COFIX rates were further lowered last month, some mortgage variable rates were raised simultaneously. A financial sector official pointed out, “While the interest benefits of variable rates seem large for now, if the interest rate trend reverses to an upward trajectory, the interest burden could increase significantly.”


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