Bank of Korea rate hike inevitable: Policy choice to address won depreciation and inflation pressure

Keywords

Bank of Korea; rate hike; won depreciation; inflation risk; benchmark rate; monetary policy

Introduction

Against the backdrop of profound adjustments in the global economic landscape and persistent geopolitical risks, Korea, as an export-oriented economy, faces unprecedented monetary policy challenges. The Bank of Korea recently made a firm statement that "a rate hike is inevitable," sending a strong signal that quickly drew attention from international financial markets. Citibank was the first to provide a specific forecast: the BOK will raise its benchmark rate by 25 basis points to 2.75% at its July 16 monetary policy meeting. This move is directly aimed at two intertwined problems—the sustained depreciation of the won and rising inflation risks. This article examines the policy rationale, market impact, and potential consequences in three dimensions, delving into the logic behind the BOK's key decision and exploring its far-reaching implications for Korea and the broader Asia-Pacific economy.

I. Dual pressures: The vicious cycle of won depreciation and inflation

1. Causes and transmission mechanism of won depreciation

Since 2022, the won-dollar exchange rate has experienced significant depreciation, breaching the key psychological threshold of 1,300 won per dollar. The depreciation stems from both external factors and internal structural issues. Externally, the Fed's aggressive rate hikes have strengthened the U.S. dollar index, causing global capital to flow back to the U.S. and putting pressure on emerging market currencies. Internally, Korea's current account has recorded rare deficits in years, export growth has slowed, and core industries such as semiconductors face weak demand—all undermining the fundamental support for the won.

Won depreciation does not occur in isolation; it forms a dangerous synergy with inflation. As a country heavily dependent on imports of energy and raw materials, the won's depreciation directly raises import prices. Commodities like crude oil, natural gas, and grains are dollar-denominated, so a weaker won translates into sharply higher energy and production costs in local currency. This cost-push inflation quickly transmits to the consumer side, severely eroding household purchasing power.

2. Inflation pressure: From "transitory" to "stubborn"

Korea's inflation rate exceeded 6% in the second half of 2022, hitting a nearly 24-year high. Although it has since eased, core inflation remains elevated, with service prices and food prices showing strong stickiness. The BOK had previously held a "transitory inflation" view, but reality shows that supply shocks combined with demand recovery have turned inflation from a short-term phenomenon into a medium- to long-term risk. In particular, wage growth expectations and corporate price hikes have formed a self-reinforcing spiral, forcing policymakers to take more decisive action.

Against this backdrop, BOK Governor Rhee Chang-yong repeatedly stressed that "price stability is the primary objective of monetary policy" and explicitly stated that "a rate hike is inevitable." This statement indicates that a consensus has been reached within the central bank: the cost of moderate economic slowdown is smaller than the long-term damage caused by letting inflation run out of control.

II. Logic behind Citibank's forecast: Rationale for a 25bp hike on July 16

1. Timing: Why July?

Citibank's timing of the rate hike on July 16 is not arbitrary; it is based on a comprehensive assessment of the BOK's meeting schedule, economic data release rhythm, and international policy coordination. If Korea's May inflation data continues to exceed expectations, it will strengthen the case for immediate action. Moreover, with the Fed's July FOMC meeting approaching, a rate hike by the BOK beforehand could alleviate depreciation pressure on the won to some extent, avoiding a passive response after another Fed hike.

Additionally, July is also the window for the BOK's semi-annual economic outlook report, allowing the central bank to adjust its inflation and growth forecasts and provide data support for the rate hike. Citibank's forecast of a 25bp hike, rather than a more aggressive 50bp, reflects the BOK's careful balance between curbing inflation and preventing excessive economic cooling.

2. Rate path: 2.75% is not the destination

Raising the benchmark rate to 2.75% means pushing the policy rate about 150 basis points above the pre-pandemic level (1.25%). However, given that inflation still far exceeds the target (2%), this level remains in the "insufficiently restrictive" range. The market generally expects the BOK to raise rates at least one or two more times this year, eventually reaching 3.0% to 3.25%. Citibank's forecast is just one step in this gradual tightening cycle, not the end point.

III. Potential impact of rate hikes: Economic growth, financial markets, and livelihoods

1. Growth dampening effect

The most direct negative impact of rate hikes is raising corporate financing costs and household mortgage burdens. Korea's household debt has exceeded 100% of GDP, so higher interest rates will significantly increase debt repayment pressure, curbing consumption and investment. Institutions such as the Korea Development Institute have already lowered their full-year growth forecast to around 1.5%. If the pace of rate hikes is too rapid, a technical recession cannot be ruled out. Nevertheless, central bank officials generally believe that short-term growth slowdown is a necessary price to pay to contain inflation and avoid more severe imbalances.

2. Impact on financial markets

In theory, rate hikes help stabilize the won exchange rate because wider interest rate differentials attract foreign capital inflows. However, the actual effect depends on global risk appetite. If the market perceives that the BOK's rate hike pace still lags behind the Fed's, the interest rate advantage may be limited, and the won may only receive short-term support. Additionally, rising bond yields will depress prices of existing bonds, causing book losses for banks and insurers holding large amounts of government bonds. In the stock market, interest-rate-sensitive sectors (e.g., real estate, consumption) will face valuation pressure.

3. Impact on ordinary households

The real economic impact of rate hikes ultimately trickles down to every household. Mortgage rates rise almost simultaneously, increasing monthly payments and directly reducing disposable income. SME owners face higher loan rollover costs, and some enterprises may lay off employees or cut wages. If inflation gradually declines due to rate hikes, household purchasing power may recover in the medium term, but short-term pain is unavoidable. The Korean government has introduced some targeted subsidies and loan extension policies, but these cannot fully offset the tightening effect.

IV. Policy mix and future outlook

1. Coordination of fiscal and monetary policy

Facing the risk of economic slowdown caused by rate hikes, the Korean government has simultaneously pursued fiscal expansion, such as increasing cash subsidies for low-income groups and expanding public investment projects. However, fiscal space is constrained by rising debt ratios, and the combination of expansionary fiscal and contractionary monetary policy has inherent contradictions. The ideal path is: monetary policy focuses on inflation, while fiscal policy targets support for vulnerable groups, working in tandem rather than offsetting each other.

2. External uncertainties

The BOK's rate hike decision is not an isolated domestic matter; it is part of the global tightening wave. Major central banks such as the Fed, ECB, and Bank of England are also raising rates simultaneously, pushing up the global policy rate floor. If the BOK's rate hikes are insufficient, the won could depreciate further, exacerbating imported inflation; if they are excessive, it could trigger capital outflows and asset price crashes. This "dilemma" tests the wisdom and resolve of central bank policymakers.

3. Importance of long-term structural reforms

Rate hikes are only short-term anti-inflation tools and cannot replace structural reforms. Korea's long-standing economic challenges include high export dependence, population aging, and slowing labor productivity growth. If potential growth cannot be lifted through innovation and industrial upgrading, merely curbing demand with monetary policy will eventually lead to a "low-growth, high-interest rate" stagflationary quagmire. Therefore, the BOK, while raising rates, must also cooperate with the government to promote labor market reforms, open the service sector, and cultivate new growth engines.

Conclusion

The BOK's statement that "a rate hike is inevitable" and Citibank's forecast of a 25bp hike to 2.75% on July 16 reflect the typical policy dilemma faced by emerging economies amid global inflation pressure and exchange rate volatility. On the one hand, high inflation calls for decisive monetary tightening; on the other, weakening growth momentum limits room for rate hikes. For Korea, prioritizing price stability and currency credibility is a rational and necessary short-term strategy. However, without simultaneous structural reforms, relying solely on rate hikes cannot fundamentally resolve economic vulnerabilities. In the coming quarters, the BOK will continue to walk a tightrope between curbing inflation and supporting growth. Each policy decision will serve as an important barometer for Asia's monetary policy direction. Market participants and policymakers alike should recognize: rate hikes are not the end, but the first step toward a more robust macroeconomic governance system.