Nominal GDP Surges: Household Debt-to-GDP Ratio Nears 85% in Q1

Nominal GDP Jumps 10% on Semiconductor Boom

Household Debt-to-GDP Ratio Expected to Drop Sharply

Likely to Fall from 88.2% at Year-End to Around 85%

Critical Threshold of "80–85%" Cited by Governor Rhee Chang-yong

Early Achievement of 80% Possible This Year if Current Trends Continue

Thanks to the semiconductor boom, South Korea's nominal Gross Domestic Product (GDP) saw rapid growth in the first quarter of this year, which is expected to sharply lower the household debt-to-GDP ratio. There is now a high likelihood that the ratio will reach the critical threshold mentioned by Bank of Korea Governor Rhee Chang-yong in the first quarter. If the current economic conditions and household debt regulations persist, the government’s target of reducing the ratio to 80% by 2030 may be achieved as early as the end of this year.

According to estimates based on the Bank of Korea’s calculation formula for the household debt-to-GDP ratio released on June 11, the household debt-to-GDP ratio for the first quarter of this year is expected to drop to around 85%.

The household debt-to-GDP ratio is calculated by dividing the core debt (loans to households and non-profit organizations, as well as government loans, as defined in the flow of funds statistics) by the sum of nominal GDP over the most recent four quarters. From the second quarter of last year to the first quarter of this year, nominal GDP totaled 2,788.8 trillion won. By adding the increase in household credit in the first quarter of this year—14 trillion won—to the core debt as of the end of last year (2,359.7239 trillion won) and dividing by the GDP figure, the household debt-to-GDP ratio for the first quarter is calculated at 85.11%. Considering government loans and non-profit organization statistics as well, the first-quarter ratio is expected to be close to 85%.

The 85% household debt-to-GDP ratio is a figure not seen since the second quarter of 2018 (85.5%). After entering the 85% range in the first quarter of 2018, the ratio continued to rise, surpassing 90% in the first quarter of 2020 and reaching as high as 99.1% in the third quarter of 2021. Since then, it has gradually declined, dropping to 89.6% at the end of 2024 and 88.2% at the end of last year.

Although it is difficult to generalize due to differing economic conditions in each country, several international studies view a household debt-to-GDP ratio of 80–85% as the threshold below which household debt does not constrain economic growth. The Bank for International Settlements (BIS), based on an empirical analysis of data from 18 OECD advanced economies over 30 years (1980–2010), identified 85% as the critical threshold. If the ratio exceeds this level and continues to rise excessively, the debt service burden on households increases, which can dampen consumption. Financial institutions may also see excessive capital tied up in household loans such as mortgages, instead of being channeled into real investment, negatively impacting long-term growth.

Bank of Korea Governor Rhee Chang-yong also cited 80–85% as the critical threshold for the household debt-to-GDP ratio during a parliamentary confirmation hearing in April. He explained, "There is some uncertainty in measuring the threshold, but it is generally considered to be around 80–85% of GDP. If the ratio is lower than this, the impact on growth is not significant, but if it exceeds this level, it can begin to constrain growth." If the household debt-to-GDP ratio drops to around 85% in the first quarter, it would mean that the risks of household debt constraining economic growth have largely been resolved.

If the current economic situation and household debt management continue, some forecast that the year-end household debt-to-GDP ratio will fall below the government’s designated safety line of 80%. In April, the government announced a plan to "decouple the real estate market from finance" as a key objective, managing the growth rate of household loans to 1.5%—less than half the projected nominal growth rate—and stabilizing the household debt-to-GDP ratio at around 80% by 2030.

Jang Min, Senior Research Fellow at the Korea Institute of Finance, said, "The fact that nominal GDP is rising faster than household debt, thereby lowering the debt ratio, means income capacity is increasing, which is positive for the economy. The current administration is likely to continue its regulatory stance on household debt in order to change the capital structure flowing into real estate and stabilize the housing market. If the sharply increased GDP is maintained at its current level, this decline in the household debt ratio will not be just a temporary phenomenon."

This content was produced with the assistance of AI translation services.