BoJ Report: Impact of weak Japanese Yen shock on inflation bigger than that from oil shock

A report released by the Bank of Japan (BoJ) on Thursday revealed that the impact of weak Japanese Yen shock on inflation bigger than that from oil shock. The weakening of the JPY pushes up prices for wide range of goods services, thereby gives bigger boost to consumer inflation excluding fresh food, energy.

Key quotes

Impact of weak Yen shock on inflation bigger than that from oil shock.

Weak Yen pushes up prices for wide range of goods services, thereby gives bigger boost to consumer inflation excluding fresh food, energy.

Oil price rises put fairly big upward pressure on smaller number of goods related to energy, which means impact on CPI excluding fresh food, energy isn't very big.

Weak Yen shock expands wage, profit margin and leads to increase in GDP deflater, while energy shock squeezes wage, profit margin and leads to decrease in GDP deflater.

Market reaction

As of writing, the USD/JPY pair is up 0.02% on the day at 160.48.

Japanese Yen FAQs

The Japanese Yen (JPY) is one of the world’s most traded currencies. Its value is broadly determined by the performance of the Japanese economy, but more specifically by the Bank of Japan’s policy, the differential between Japanese and US bond yields, or risk sentiment among traders, among other factors.

One of the Bank of Japan’s mandates is currency control, so its moves are key for the Yen. The BoJ has directly intervened in currency markets sometimes, generally to lower the value of the Yen, although it refrains from doing it often due to political concerns of its main trading partners. The BoJ ultra-loose monetary policy between 2013 and 2024 caused the Yen to depreciate against its main currency peers due to an increasing policy divergence between the Bank of Japan and other main central banks. More recently, the gradually unwinding of this ultra-loose policy has given some support to the Yen.

Over the last decade, the BoJ’s stance of sticking to ultra-loose monetary policy has led to a widening policy divergence with other central banks, particularly with the US Federal Reserve. This supported a widening of the differential between the 10-year US and Japanese bonds, which favored the US Dollar against the Japanese Yen. The BoJ decision in 2024 to gradually abandon the ultra-loose policy, coupled with interest-rate cuts in other major central banks, is narrowing this differential.

The Japanese Yen is often seen as a safe-haven investment. This means that in times of market stress, investors are more likely to put their money in the Japanese currency due to its supposed reliability and stability. Turbulent times are likely to strengthen the Yen’s value against other currencies seen as more risky to invest in.



Japan Construction Orders (YoY): -14.4% (March) vs previous 42.7%

Japan Construction Orders (YoY): -14.4% (March) vs previous 42.7%
Read more Previous

France Gross Domestic Product (QoQ) came in at 0%, below expectations (0.2%) in 1Q

France Gross Domestic Product (QoQ) came in at 0%, below expectations (0.2%) in 1Q
Read more Next