Changes in the Format of "Uncollateralized Overnight Call Rate"
September 4, 2025
Financial Markets Department
Bank of Japan
From October 6, 2025, the Bank of Japan will change the release format of "Uncollateralized Overnight Call Rate" from HTML to Excel. Additionally, the data file will be written in both Japanese and English, and the same file will be released on the Japanese and English websites. The data will be available at the following URL:
Data prior to the change will remain on the Bank's website in HTML format until the end of the year following their publication. However, only the October 2025 data prior to the change will be retroactively released in Excel format as well.
- New URL https://www.boj.or.jp/en/statistics/market/short/mutan/index.htm
In addition, the location of "Call Money Market Data" will change to the above URL as of October 6, 2025.
Inquiries
Operations Group, Market Operations Division, Financial Markets Department
E-mail : post.cmmd3@boj.or.jp