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 4.04 percent on 17 September 2026, compared to 4.07 on 16 September.
Sample. This daily series has 4,614 observations. The time span covered by the series extends from November 2007 to September 2026.
History. Here are some descriptive statistics we calculated on the full sample: the yield averaged 1.69 percent; it recorded its highest level of 4.14 on 1 September 2026; it reached a trough of 0.07 on 6 July 2016.
Latest values
| Date | Value - Percentage points |
|---|---|
| 2026-09-15 | 4.10500 |
| 2026-09-16 | 4.07200 |
| 2026-09-17 | 4.03600 |
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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) |
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