Official and Arbitrated Foreign Exchange Rates for October
Overview
A public notice by the Minister of Finance, published by the Bank of Japan's International Department on September 18, 2026. It sets the official foreign exchange rate applicable during October of Reiwa 8 at 159 yen per US dollar. The arbitrated foreign exchange rates are 114 yen per Canadian dollar, 23 yen per Chinese yuan, 17 yen per Swedish krona, 197 yen per Swiss franc, 215 yen per pound sterling, and 184 yen per euro. Other currencies are arbitrated based on their market rates against the US dollar during August of Reiwa 8 and other relevant benchmarks.
Key points
- The official and arbitrated foreign exchange rates applicable during October of Reiwa 8 were announced.
- The official foreign exchange rate is 159 yen per US dollar.
- The arbitrated foreign exchange rates are 114 yen per Canadian dollar, 23 yen per Chinese yuan, 17 yen per Swedish krona, 197 yen per Swiss franc, 215 yen per pound sterling, and 184 yen per euro.
- Other currencies are arbitrated using market rates during August of Reiwa 8.
Overview
This public notice, issued by the Minister of Finance, presents the official and arbitrated foreign exchange rates applicable during October of Reiwa 8. It was published by the Bank of Japan's International Department on September 18, 2026.
The official foreign exchange rate sets the exchange ratio between the US dollar and Japanese currency, while the arbitrated foreign exchange rates show ratios between several foreign currencies and Japanese currency. For other currencies, rates are determined using market rates against the US dollar or market rates against a currency with an existing arbitrated foreign exchange rate.
Details
The official foreign exchange rate is 159 yen in Japanese currency per US dollar. The arbitrated foreign exchange rates are 114 yen per Canadian dollar, 23 yen per Chinese yuan, 17 yen per Swedish krona, 197 yen per Swiss franc, 215 yen per pound sterling, and 184 yen per euro.
For other currencies, the market rate of the relevant currency against the US dollar during August of Reiwa 8 is arbitrated using the official foreign exchange rate. For currencies for which a market rate against the US dollar is unavailable, the market rate of the relevant currency against a currency with an arbitrated foreign exchange rate is used, together with the rate arbitrated using that arbitrated foreign exchange rate.
For reference, the table lists market rates of foreign currencies against the US dollar during August of Reiwa 8. The currencies covered include the United Arab Emirates dirham, Argentine peso, Israeli shekel, Iranian rial, Indian rupee, Indonesian rupiah, Australian dollar, Omani rial, Qatari riyal, South Korean won, Singapore dollar, Thai baht, Turkish lira, New Zealand dollar, Brazilian real, Hong Kong dollar, Malaysian ringgit, South African rand, and Mexican peso, among others.
For foreign currencies not listed in the reference table, the average market rate of the relevant foreign currency against the US dollar during August of Reiwa 8 is used.