30-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 30-year government-bond yield was 4.13 percent on 29 September 2026, compared to 4.12 on the previous day.
Sample. The daily series plotted above has a total of 6,631 data points. The series covers the span of time going from September 1999 to September 2026.
History. Here's a peek at some summary statistics calculated on the entire sample: the yield had an average value of 1.79 percent; it reached its highest level of 4.13 on 1 September 2026; it recorded a minimum of 0.04 on 6 July 2016.
Latest values
| Date | Value - Percentage points |
|---|---|
| 2026-09-25 | 4.112 |
| 2026-09-28 | 4.122 |
| 2026-09-29 | 4.126 |
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Series Metadata
| Field | Value |
|---|---|
| Description | 30-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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