Seoul, South Korea – A chorus of warnings is sounding over the trajectory of the South Korean economy, with the Organization for Economic Cooperation and Development (OECD) projecting a potential growth rate of just 1.98% for the coming year. This significant downward revision, falling below the symbolic 2% threshold, underscores a growing consensus among international and domestic economic bodies that South Korea is grappling with a structural slowdown that extends beyond short-term cyclical fluctuations. The Korea Development Institute (KDI), a prominent state-backed think tank, has further amplified these concerns by highlighting persistent downward pressure on the economy for the fifth consecutive month, explicitly acknowledging an ongoing economic deceleration in its latest assessment.

The OECD's updated 'Economic Outlook,' released on Monday, paints a concerning picture of South Korea's long-term economic vitality. The projected 1.98% potential GDP growth rate for 2026 represents a further decline from the already modest 2.02% estimated for the current year. This marks a dramatic erosion of South Korea's growth potential over the past decade, plummeting from a robust 3.0% in 2017 – a decline that ranks as the seventh largest among the 37 OECD member nations.

The potential growth rate, a crucial indicator of an economy's underlying strength and its capacity for non-inflationary expansion, serves as a barometer for long-term economic health. The descent of this key metric into the sub-2% territory signals a fundamental weakening of South Korea's ability to generate sustained economic expansion. This erosion is attributed to a confluence of deep-seated structural challenges, primarily demographic shifts and flagging investment.

The most pressing of these challenges is South Korea's rapidly aging population and the consequent shrinking of its working-age demographic. This demographic headwind directly translates to a decline in labor input, a critical component of economic growth. Compounding this issue is a noticeable contraction in capital investment, as businesses exhibit caution amidst economic uncertainty and shifting global dynamics. The combination of reduced labor and capital input inevitably constrains overall economic output.

Furthermore, South Korea's once-vaunted technological prowess appears to be facing headwinds. Stagnant technological innovation has resulted in a deceleration of total factor productivity (TFP) growth, which measures the efficiency with which labor and capital are combined to produce output. A slowdown in TFP growth indicates a diminished capacity for the economy to generate more output from the same level of inputs, further dampening potential growth.

The grim projections from the OECD are not isolated. The National Assembly Budget Office (NABO) had earlier forecast a potential growth rate of 1.9% for the current year, while the KDI's recent medium-to-long-term analysis anticipates an average potential growth rate of a mere 1.5% for the 2025-2030 period. This convergence of forecasts from leading domestic and international institutions underscores the severity of the situation and fuels concerns that South Korea is not merely experiencing a temporary economic dip but is instead entrenched in a protracted period of low growth.

Adding to the apprehension is the KDI's increasingly cautious assessment of the current economic climate. In its latest 'May Economic Trends' report, the institute explicitly stated that "the Korean economy is showing key indicators signaling an economic slowdown, due to the confluence of deteriorating external conditions and a delayed recovery in domestic demand." This marks a significant shift in language from previous months, where the KDI had consistently used the less definitive term "downward pressure," suggesting a growing conviction that a genuine economic deceleration is underway.

Several factors are contributing to this precarious economic outlook. The struggling construction sector, grappling with a combination of regulatory hurdles and weakening demand, is dampening domestic investment and employment. Simultaneously, the imposition of tariffs by the United States on certain goods is exacerbating the challenges faced by South Korean exporters, further constraining economic activity.

Domestic demand, traditionally a crucial engine of growth, also remains stubbornly weak. Despite temporary tax cuts aimed at stimulating consumption, retail sales excluding passenger vehicles have shown only marginal growth. Worryingly, sectors reliant on discretionary spending, such as accommodation and food services, are experiencing a contraction in consumption, indicating a broader hesitancy among consumers.

The confluence of these domestic and international headwinds paints a challenging picture for South Korea's economic future. The projected decline in potential growth underscores the urgent need for comprehensive structural reforms aimed at boosting productivity, encouraging investment, and addressing the demographic crisis. Without decisive policy interventions to revitalize innovation, enhance labor market flexibility, and create a more business-friendly environment, South Korea risks being locked into a prolonged period of sluggish growth, with significant implications for future prosperity and the well-being of its citizens. The warnings from the OECD and the KDI serve as a stark reminder that proactive and bold action is required to steer the South Korean economy back onto a path of sustainable and robust growth.