1-year Treasury bill secondary market rate (percentage points) - United States - FED Board - Daily
This series is part of the dataset: US money market rates (FED Board)
Download Full Dataset (.xlsx)Latest updates. In US money markets, the 1-year T-bill secondary-market rate was 3.82 percent on 18 June 2026, compared to 3.81 on 17 June.
Sample. In this daily time series, there are a total of 15,031 data points. The time span covered by the series is from July 1959 to June 2026.
History. Check out a few descriptive statistics computed on the whole sample: the interest rate attained a maximum of 15.21 percent on 3 September 1981; it registered a minimum of 0.04 on 21 May 2021; it averaged 4.73.
Latest values
| Date | Value - Percentage points |
|---|---|
| 2026-06-16 | 3.68 |
| 2026-06-17 | 3.81 |
| 2026-06-18 | 3.82 |
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Series Metadata
| Field | Value |
|---|---|
| Description | 1-year Treasury bill secondary market rate |
| Country | United States |
| Economic concept | Interest rate |
| Data type | Interest rate |
| Deflation method | Nominal |
| Seasonally adjusted | No |
| Rescaling | None |
| Frequency | Daily |
| Unit | Percentage points |
| Source | Board of Governors of the Federal Reserve System |
| Source type | Central bank |
| Data licence | Licence to copy and distribute without permission |
| Measure type | Level |
Series in the same data set
Discover the other time series included in this data set.
Fed funds
| Series Name | Observations | Start Date | End Date |
|---|---|---|---|
| Federal funds effective rate (percentage points) - United States - FED Board - Daily | 18099 | 1954-07-01 | 2026-06-18 |
Commercial paper
| Series Name | Observations | Start Date | End Date |
|---|---|---|---|
| 30-Day AA Nonfinancial Commercial Paper Interest Rate (percentage points) - United States - FED Board - Daily | 6936 | 1997-01-02 | 2026-06-18 |
| 60-Day AA Nonfinancial Commercial Paper Interest Rate (percentage points) - United States - FED Board - Daily | 6164 | 1997-01-02 | 2026-06-17 |
| 90-Day AA Nonfinancial Commercial Paper Interest Rate (percentage points) - United States - FED Board - Daily | 5287 | 1997-01-02 | 2026-06-17 |
| 30-Day AA Financial Commercial Paper Interest Rate (percentage points) - United States - FED Board - Daily | 6059 | 1997-01-02 | 2026-06-12 |
| 60-Day AA Financial Commercial Paper Interest Rate (percentage points) - United States - FED Board - Daily | 5762 | 1997-01-02 | 2026-06-08 |
| 90-Day AA Financial Commercial Paper Interest Rate (percentage points) - United States - FED Board - Daily | 6711 | 1997-01-02 | 2026-06-18 |
Prime bank rate
| Series Name | Observations | Start Date | End Date |
|---|---|---|---|
| Prime rate charged by banks on short-term loans to business (percentage points) - United States - FED Board - Weekly | 18062 | 1955-08-04 | 2026-06-16 |
Treasury bills
| Series Name | Observations | Start Date | End Date |
|---|---|---|---|
| 4-week Treasury bill secondary market rate (percentage points) - United States - FED Board - Daily | 6223 | 2001-07-31 | 2026-06-18 |
| 3-month Treasury bill secondary market rate (percentage points) - United States - FED Board - Daily | 18107 | 1954-01-04 | 2026-06-18 |
| 6-month Treasury bill secondary market rate (percentage points) - United States - FED Board - Daily | 16867 | 1958-12-09 | 2026-06-18 |
| 1-year Treasury bill secondary market rate (percentage points) - United States - FED Board - Daily | 15031 | 1959-07-15 | 2026-06-18 |