6-month 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 6-month US government bonds stood at 4.24 percent on 18 September 2026, versus 4.20 on 17 September 2026.
Sample. The daily series presented in the graph has a total of 9,185 observations. The series covers the period going from January 1990 to September 2026.
History. Take a look at some descriptive statistics we computed on the full sample: the yield registered a minimum of 0.02 percent on 26 August 2011; it hit a maximum of 8.49 on 1 May 1990; it had a mean of 2.92.
Latest values
| Date | Value - Percentage points |
|---|---|
| 2026-09-16 | 4.22000 |
| 2026-09-17 | 4.20000 |
| 2026-09-18 | 4.24000 |
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Series Metadata
| Field | Value |
|---|---|
| Description | 6-month 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 | 5933 | 2003-01-02 | 2026-09-18 |
| 7-year real par yield on Treasuries (percentage points; constant maturity; real) - United States - Department of the Treasury - Daily | 5933 | 2003-01-02 | 2026-09-18 |
| 10-year real par yield on Treasuries (percentage points; constant maturity; real) - United States - Department of the Treasury - Daily | 5933 | 2003-01-02 | 2026-09-18 |
| 20-year real par yield on Treasuries (percentage points; constant maturity; real) - United States - Department of the Treasury - Daily | 5542 | 2004-07-27 | 2026-09-18 |
| 30-year real par yield on Treasuries (percentage points; constant maturity; real) - United States - Department of the Treasury - Daily | 4148 | 2010-02-22 | 2026-09-18 |