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 was 5.12 percent on 15 May 2026, versus 5.02 on 14 May.
Sample. There are 8,105 records overall in the daily time series shown in the plot above. The series covers the period going from January 1990 to May 2026.
History. Here are a few statistics computed on the full sample: the yield had an average value of 4.74 percent; it hit a minimum of 0.99 on 9 March 2020; it recorded its maximum of 9.18 on 24 September 1990.
Latest values
| Date | Value - Percentage points |
|---|---|
| 2026-05-13 | 5.03 |
| 2026-05-14 | 5.02 |
| 2026-05-15 | 5.12 |
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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 | 5847 | 2003-01-02 | 2026-05-15 |
| 7-year real par yield on Treasuries (percentage points; constant maturity; real) - United States - Department of the Treasury - Daily | 5847 | 2003-01-02 | 2026-05-15 |
| 10-year real par yield on Treasuries (percentage points; constant maturity; real) - United States - Department of the Treasury - Daily | 5847 | 2003-01-02 | 2026-05-15 |
| 20-year real par yield on Treasuries (percentage points; constant maturity; real) - United States - Department of the Treasury - Daily | 5456 | 2004-07-27 | 2026-05-15 |
| 30-year real par yield on Treasuries (percentage points; constant maturity; real) - United States - Department of the Treasury - Daily | 4062 | 2010-02-22 | 2026-05-15 |