Can Japan stop the yen falling?

The EconomistAbout 3 min readJan 29, 2026Watch original
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Key Concepts

  • Yen Weakness: The sustained decline in the value of the Japanese Yen against other currencies, particularly the US Dollar.
  • Interest Rate Differential: The difference in interest rates between two countries, a key driver of currency exchange rates.
  • Real Interest Rates: Interest rates adjusted for inflation, providing a more accurate picture of the true cost of borrowing.
  • Fiscal Crisis: A situation where a government struggles to manage its debt and finances.
  • Currency Intervention: Government action to buy or sell its own currency in the foreign exchange market to influence its value.

The Recent Weakness of the Japanese Yen

The Japanese Yen has experienced significant weakness in recent years, becoming particularly pronounced in the early 2020s. This decline has made Japan an attractive tourist destination, especially for American visitors, but has simultaneously increased the cost of imports for Japanese consumers. The exchange rate chart demonstrates a consistent downward trend for the Yen against the US Dollar during this period.

Initial Drivers: Interest Rate Divergence (2020-2022)

The primary driver of the Yen’s initial weakness was a widening interest rate differential between the United States and Japan. The US Federal Reserve aggressively raised interest rates to combat rising inflation – repeatedly referenced as “inflation, inflation, the inflation issue” – while the Bank of Japan (BoJ) maintained its ultra-loose monetary policy, as inflation had been historically dormant in Japan. This made holding US Dollar-denominated assets more attractive than Yen-denominated assets, leading to capital outflow and Yen depreciation.

The Paradox: Yen Weakness Despite Rate Hikes

Despite the BoJ now raising interest rates, the Yen remains weak. This has sparked speculation about potential currency intervention by the Japanese government, similar to interventions seen in 2022 and potentially 2024, involving the purchase of Yen to bolster its value. There’s also speculation that the United States might purchase Yen, contributing to a recent, albeit temporary, fall in the Dollar and a spike in the Yen’s value.

Underlying Fiscal Concerns & Real Interest Rates

A key argument for the Yen’s continued weakness centers around Japan’s substantial government debt and a potential “slow burn fiscal crisis.” Rising interest rates and bond yields increase the cost of servicing this debt. However, the impact of rising interest rates has been partially offset by a concurrent increase in inflation. Consequently, real interest rates (nominal interest rates adjusted for inflation) in Japan haven’t risen significantly. A chart illustrating the differential between real interest rates in the US and Japan reveals a substantial gap that opened in 2022 and has not substantially closed, cushioning the impact on the Japanese budget.

Political & Fiscal Policy Shifts

Japanese Prime Minister Takayichi Sai is currently campaigning in a snap election, promising a combination of increased spending – particularly on defense – and temporary cuts to consumption taxes. The feasibility of these promises is questionable, given Japan’s existing debt burden. While the government currently has some fiscal flexibility, long-term debt control is crucial to avoid a potential currency crisis.

Implications & Future Outlook

The video highlights a complex interplay of monetary policy, fiscal health, and political considerations impacting the Yen. The situation is not simply about interest rate differentials; Japan’s debt levels and future fiscal policy decisions are critical factors. While intervention might provide short-term relief, sustainable Yen strength requires addressing the underlying fiscal vulnerabilities. As stated implicitly, Japan will “eventually have to control its debts if it wants to avoid a currency crisis.”

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