4-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 4-month US government bonds was 4.30 percent on 29 September 2026, compared to 4.33 on the previous day.
Sample. There are 986 observations overall in the daily series displayed in the chart above. The time range covered by the series extends from October 2022 to September 2026.
History. Have a look at a few summary statistics we calculated on the whole sample: the yield reached a maximum of 5.64 percent on 6 October 2023; it reached a minimum of 3.58 on 6 January 2026; it was equal on average to 4.66.
Latest values
| Date | Value - Percentage points |
|---|---|
| 2026-09-25 | 4.32 |
| 2026-09-28 | 4.33 |
| 2026-09-29 | 4.3 |
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Series Metadata
| Field | Value |
|---|---|
| Description | 4-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 | 5940 | 2003-01-02 | 2026-09-29 |
| 7-year real par yield on Treasuries (percentage points; constant maturity; real) - United States - Department of the Treasury - Daily | 5940 | 2003-01-02 | 2026-09-29 |
| 10-year real par yield on Treasuries (percentage points; constant maturity; real) - United States - Department of the Treasury - Daily | 5940 | 2003-01-02 | 2026-09-29 |
| 20-year real par yield on Treasuries (percentage points; constant maturity; real) - United States - Department of the Treasury - Daily | 5549 | 2004-07-27 | 2026-09-29 |
| 30-year real par yield on Treasuries (percentage points; constant maturity; real) - United States - Department of the Treasury - Daily | 4155 | 2010-02-22 | 2026-09-29 |