40-year yield on government bonds (percentage points; constant maturity; nominal) - Japan - Ministry of Finance - Daily
This series is part of the dataset: Japan constant-maturity government-bond yield curve (Ministry of Finance)
Download Full Dataset (.xlsx)Latest updates. In Japan, the 40-year government-bond yield stood at 4.17 percent on 7 October 2026, compared to 4.20 on 6 October.
Sample. There are 4,625 observations overall in the daily series displayed in the graph above. The time range covered by the series stretches from November 2007 to October 2026.
History. Here's a peek at some summary statistics calculated on the full sample: the yield had a mean of 1.69 percent; it hit a trough of 0.07 on 6 July 2016; it recorded its highest level of 4.20 on 6 October 2026.
Latest values
| Date | Value - Percentage points |
|---|---|
| 2026-10-05 | 4.195 |
| 2026-10-06 | 4.196 |
| 2026-10-07 | 4.17 |
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Series Metadata
| Field | Value |
|---|---|
| Description | 40-year yield; Japan government bond yield curve |
| Country | Japan |
| Economic concept | Interest rate |
| Data type | Semiannually compounded interest rate |
| Deflation method | Not applicable |
| Seasonally adjusted | No |
| Rescaling | None |
| Frequency | Daily |
| Unit | Percentage points |
| Source | Japan Ministry of Finance |
| Source type | National source |
| Data licence | Public Data Licence |
| Measure type | Interpolated level (constant maturity; cubic spline) |
Series in the same data set
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