30-year par yield on Treasuries (percentage points; constant maturity; nominal) - United States - Department of the Treasury - Daily
This series is part of the dataset: US Treasury constant-maturity par yields (Department of the Treasury)
Download Full Dataset (.xlsx)Latest updates. According to data published by the US Treasury, the par yield on 30-year US government bonds stood at 4.88 percent on 31 March 2026, compared to 4.91 on the previous day.
Sample. There are 8,072 records overall in the daily time series shown in the graph above. The time period covered by the series stretches from January 1990 to March 2026.
History. Here's a glimpse of some descriptive statistics we calculated on the full sample: the yield reached its lowest level of 0.99 percent on 9 March 2020; it reached its highest level of 9.18 on 24 September 1990; it averaged 4.74.
Latest values
| Date | Value - Percentage points |
|---|---|
| 2026-03-27 | 4.98 |
| 2026-03-30 | 4.91 |
| 2026-03-31 | 4.88 |
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Series Metadata
| Field | Value |
|---|---|
| Description | 30-year yield US Treasury par yield curve |
| Country | United States |
| Economic concept | Interest rate |
| Data type | Constant-maturity nominal par yield |
| Deflation method | Not applicable |
| Seasonally adjusted | No |
| Rescaling | None |
| Frequency | Daily |
| Unit | Percentage points |
| Source | U.S. Department of the Treasury |
| Source type | Federal Administration |
| Data licence | Not copyrightable under U.S. law |
| Measure type | Interpolated level (constant maturity) |
Series in the same data set
Discover the other time series included in this data set.
Nominal yields
Real yields
| Series Name | Observations | Start Date | End Date |
|---|---|---|---|
| 5-year real par yield on Treasuries (percentage points; constant maturity; real) - United States - Department of the Treasury - Daily | 5814 | 2003-01-02 | 2026-03-31 |
| 7-year real par yield on Treasuries (percentage points; constant maturity; real) - United States - Department of the Treasury - Daily | 5814 | 2003-01-02 | 2026-03-31 |
| 10-year real par yield on Treasuries (percentage points; constant maturity; real) - United States - Department of the Treasury - Daily | 5814 | 2003-01-02 | 2026-03-31 |
| 20-year real par yield on Treasuries (percentage points; constant maturity; real) - United States - Department of the Treasury - Daily | 5423 | 2004-07-27 | 2026-03-31 |
| 30-year real par yield on Treasuries (percentage points; constant maturity; real) - United States - Department of the Treasury - Daily | 4029 | 2010-02-22 | 2026-03-31 |