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The Erosion of Dollar Dominance: Implications for Global Finance and Korea

Overview

For decades, US Treasury bonds have reigned as the bedrock of global financial stability, considered a safe haven asset worldwide. However, since 2023, concerns have mounted regarding the unchallenged supremacy of the dollar and US Treasuries. This shift stems from a dramatic surge in US Treasury issuance and downgrades of US credit ratings by major rating agencies like Fitch and Moody's. While Fitch lowered the US long-term credit rating to AA+ from AAA in August 2023, Moody's followed suit in May 2025, downgrading it to AA+ from AAA. These developments signal growing instability within the dominant role of the US dollar as the world's reserve currency.

Structural Vulnerabilities of the US Fiscal Crisis

By 2025, US federal debt surpassed $36 trillion (approximately ₩48,600 trillion won), exceeding 120% of GDP. The critical issue transcends the sheer magnitude of debt; it's the escalating interest payments. With the Federal Reserve maintaining high interest rates, Treasury interest costs have soared beyond $1 trillion annually, surpassing even defense spending in federal revenue. This phenomenon, termed the "Interest Trap," increasingly constricts US fiscal stability.

Significance of Credit Rating Downgrades

Major credit rating agencies, including S&P, Fitch, and Moody's, have sequentially downgraded the US sovereign credit rating from its highest tier. This collective action casts doubt on the theoretical bedrock status of US Treasury bonds as safe assets. Despite this, the demand for both the dollar and US Treasuries remains robust in real markets, often framed as "the best of a bad situation."

The Rise of De-Dollarization

Driven by nations like China and Russia, a movement towards reducing reliance on the dollar in international trade is gaining momentum – de-dollarization. The Russian invasion of Ukraine catalyzed this trend through sanctions freezing Russian dollar assets. Initiatives such as Saudi Arabia exploring yuan settlements for partial oil trades and BRICS nations discussing alternative currency baskets or gold-backed payment systems further illustrate this shift. Data from the IMF indicates a decline in the dollar's share of global foreign exchange reserves from 72% in 2001 to 57% by 2024.

Gold Price Surge: A Proxy for Dollar Skepticism

Gold demand has surged as a hedge against dollar volatility, pushing prices to unprecedented highs, exceeding $3,000 per ounce by 2024-2025. Central banks, particularly those in China, India, Russia, and Poland, have significantly increased their gold purchases. This gold price escalation serves as a barometer reflecting growing skepticism towards dollar hegemony.

Impact on Korea

As a major holder of US Treasuries (approximately $100 billion), South Korea stands to experience multifaceted repercussions. Prolonged dollar weakness could amplify pressure for a stronger won, potentially undermining export competitiveness. Conversely, import prices and energy costs might benefit from this trend. Increased exchange rate volatility directly impacts Korean financial markets and corporate operations, with the won-dollar exchange rate emerging as a critical determinant of corporate performance.

Projection: A Gradual Decline of Dollar Dominance

While most economists anticipate the dollar retaining its pivotal role as a reserve currency in the short term due to the lack of immediate viable alternatives and the sheer scale of the US financial system, a long-term shift towards a multi-currency system is widely anticipated. This scenario envisions a future characterized by the coexistence of the dollar, euro, yuan, and gold within a multipolar currency framework over several decades.

Key Concepts

Moody's, Fitch, S&P, Sovereign Credit Ratings, De-Dollarization, BRICS, Reserve Currency, Gold Prices, Federal Reserve, Korean Foreign Exchange Reserves

Trump Tariffs and the Dollar Paradox

The Trump administration's high tariffs implemented in 2025 introduced complexities to the dollar's trajectory. While trade wars initially bolstered the dollar's short-term strength, they also triggered capital outflows from US bond markets by foreign investors. This phenomenon aligns with the "Dollar Smile" theory, suggesting dollar strength during periods of either severe US economic downturn or overwhelming strength. Currently, however, the dollar navigates a period of nuanced uncertainty between these extremes.

Cryptocurrencies and the Digital Dollar

The debate surrounding dollar dominance intersects with the evolving roles of central bank digital currencies (CBDCs) and cryptocurrencies. China's accelerated rollout of the digital yuan (e-CNY) aims to establish alternative payment networks independent of the dollar. Concurrently, the US explores its own digital dollar initiatives. Bitcoin, positioned as "digital gold," has attracted increased institutional investment, further complicating the global monetary landscape.

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