Standard Foreign Exchange Rate Setting The Bank of Japan's International Department announced on August 20, 2025, the standard foreign exchange rates and arbitrage foreign exchange rates to be applied during September 2025 (Reiwa 7) as a Ministry of Finance announcement. The standard foreign exchange rate was set at 147 yen per 1 U.S. dollar. This rate serves as the official conversion rate used for preparing various reports under the Foreign Exchange Law and tax filings, occupying an important position.
Major Currency Arbitrage Foreign Exchange Rates Arbitrage foreign exchange rates for major currencies against the yen were set as follows: Canadian dollar at 107 yen per 1 Canadian dollar, Chinese yuan at 21 yen per 1 yuan, Swedish krona at 15 yen per 1 krona, Swiss franc at 184 yen per 1 franc, sterling pound at 198 yen per 1 pound, and euro at 172 yen per 1 euro. These rates are calculated based on the standard foreign exchange rate.
Calculation Methods for Other Currencies For other currencies, rates are applied based on market conditions of the respective currency against the U.S. dollar during July 2025 (Reiwa 7), arbitrated using the standard foreign exchange rate. For currencies without available market conditions against the U.S. dollar, rates are used based on market conditions of the currency against currencies with arbitrage foreign exchange rates, arbitrated using the respective arbitrage foreign exchange rates.
Reference Market Rate Data As reference, detailed market rates of each currency against the U.S. dollar during July 2025 (Reiwa 7) are published. Major rates include Australian dollar at 0.654 U.S. dollars per 1 dollar, Korean won at 0.0725 U.S. dollars per 100 won, Singapore dollar at 0.780 U.S. dollars per 1 dollar, New Taiwan dollar at 3.41 U.S. dollars per 100 Taiwan dollars, Thai baht at 3.08 U.S. dollars per 100 baht, and Hong Kong dollar at 0.127 U.S. dollars per 1 dollar. This detailed rate information serves as basic reference material for conversion calculations in international transactions and foreign investments.