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A Weak Yen Makes Imports More Expensive: Japanese Inflation Keeps Pressure on the Bank of Japan

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Apme Fx | A Weak Yen Makes Imports More Expensive: Japanese Inflation Keeps Pressure on the Bank of Japan

Japan continues to face high import costs, which complicate the central bank’s decision-making on interest rates. Data released on October 13, 2026, showed that producer prices rose 6.8% year-over-year in September, while import prices, expressed in yen, rose 24.5%. Although the growth in producer prices has slowed, the weak currency remains a significant source of cost pressures. The Bank of Japan will assess this data as it prepares new economic and inflation forecasts for its meeting on October 29 and 30. [1]


Expensive imports are driving up costs even as producer inflation slows


The 6.8% rise in producer prices in September represented a slowdown from August’s 7.6%, while prices fell by 0.3% compared to the previous month. This indicator tracks prices of goods in business-to-business transactions; therefore, its trend cannot be equated with consumer inflation. Differences across sectors were significant. Prices for agricultural, forestry, and fishery products fell by 13.3% year-over-year, while chemical products rose by 13.3%, plastic products by 12.8%, and non-ferrous metals by 40.2%. Import prices expressed in yen were 24.5% higher than a year ago; however, in the original currencies of the contracts, they rose by 17.9%. The 6.6-percentage-point difference highlights the importance of the exchange rate in the development of import costs. For imported crude oil, coal, and natural gas, year-over-year price growth in yen reached 43.6%. From a business perspective, it therefore remains crucial whether companies will absorb these higher costs at the expense of their own profits or gradually pass them on to customers. [2]


Households expect further price increases and feel pressure on their budgets


A Bank of Japan survey also released on October 13 showed that 88.6% of respondents expect higher prices a year from now. In the previous survey conducted in June, that figure was 90.4%. Over a five-year horizon, the share of people expecting price increases rose slightly from 86.1% to 86.5%. This figure represents the proportion of respondents who anticipate price increases, not the expected rate of inflation. 54.4% of respondents reported that their household’s financial situation had worsened compared to the previous year, while 4.5% reported an improvement. The results thus suggest that price pressures remain a significant concern for ordinary consumers as well. The survey included 1,972 valid responses from a sample of 4,000 adults, and data collection took place from August 3 to September 4. It therefore reflects the situation prior to the September rate hike. For further assessment of monetary policy, it will be crucial to see how household expectations change following this decision and whether income growth can offset the higher cost of living. [3]


The Bank of Japan is tightening policy in response to the pass-through of costs to consumer prices


On September 18, the Bank of Japan decided to raise the short-term rate to approximately 1.25%. Seven members of the board supported the decision, while two voted against it. The new rate took effect on September 24. In its accompanying assessment, the central bank noted that price increases in business-to-business transactions are already beginning to be passed on to consumer prices, and that trend consumer inflation is approaching its 2% target. It identified the situation in the Middle East, the growth in global demand related to artificial intelligence, and exchange rate developments as significant risks. It therefore does not assess higher producer prices in isolation, but in conjunction with incomes, employment, and the overall state of the economy. The bank also stated that it will continue to raise interest rates and adjust monetary policy in line with developments in economic activity, prices, and financial conditions. This stance leaves room for further tightening, though the timing will depend on new data. With a weak yen, it will be particularly important to see how long high import costs persist and to what extent they will be reflected in prices paid by households. [4]


The yen’s exchange rate will also be influenced by the next decision by the U.S. Federal Reserve


The performance of the USD/JPY currency pair will also depend on U.S. interest rates. On September 16, the Fed unanimously raised the target range for its key interest rate by 0.25 percentage points to 3.75–4%. Compared to Japan’s rate of 1.25%, this represents a difference of 2.50 to 2.75 percentage points. This spread may fuel investor interest in dollar-denominated assets. However, the actual return on a specific investment also depends on the instrument used and exchange rate movements. The minutes from the Fed’s September meeting state that most participants considered another rate hike by the end of the year likely to be appropriate, with decisions to be based on current data. The Fed’s next meeting is scheduled for October 27 and 28. If U.S. rates continue to rise, the support for the yen provided by Japan’s tightening monetary policy could weaken. Conversely, if U.S. rates remain unchanged and Japan raises rates further, the interest rate differential would narrow. To assess the yen’s direction, it is therefore necessary to monitor expected interest rate developments in both economies. [5]


Warning! This marketing material is not and should not be construed as investment advice. Past performance is no guarantee of future returns. Investing in foreign currencies may affect returns due to fluctuations. All securities transactions may result in either gains or losses. Forward-looking statements represent assumptions and current expectations that may not be accurate or are based on the current economic environment, which is subject to change. These statements do not guarantee future performance. APME FX Trading Europe Ltd. is regulated by the Cyprus Securities and Exchange Commission.


[1,2,3,4,5] Forward-looking statements are based on assumptions and current expectations that may be inaccurate, or on the current economic environment, which is subject to change. Such statements are not a guarantee of future performance. They involve risks and other uncertainties that are difficult to predict. Actual results may differ materially from those expressed or implied in any forward-looking statements.


Sources:

https://www.reuters.com/world/asia-pacific/japans-wholesale-inflation-remains-elevated-keeps-alive-boj-rate-hike-view-2026-10-13/

https://www.boj.or.jp/en/statistics/pi/cgpi_release/cgpi2609.pdf

https://www.boj.or.jp/en/research/o_survey/data/ishiki2610.pdf

https://www.boj.or.jp/en/mopo/mpmdeci/mpr_2026/k260918a.pdf

https://www.federalreserve.gov/monetarypolicy/fomcminutes20260916.htm

Disclaimer:

The material herein is considered as marketing communication under the relevant laws and regulations, and as such is not a subject to any prohibition on dealing ahead of the dissemination of investment research. It has not been prepared in accordance with legal requirements designed to promote the independence of investment research and should not be construed as containing investment advice, or an investment recommendation, or an offer of or solicitation for any transactions in financial instruments. The published content is intended for educational/informational purposes only. It does not take into account readers’ financial situation, personal experience or investment objectives. APME FX Trading Europe Ltd makes no representation that the information provided is accurate, current or complete; and therefore, assumes no liability for any losses arising from investments based on the supplied content. The past performance is not a guarantee of future results.

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