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 3.54 percent on 13 November 2025, compared to 3.51 on 12 November.
Sample. There are 14,882 observations in the daily series displayed in the plot above. The time range covered by the series goes from July 1959 to November 2025.
History. Here's a snapshot of a few summary statistics we computed on the entire sample: the interest rate had a mean value of 4.74 percent; it reached a trough of 0.04 on 21 May 2021; it recorded its maximum of 15.21 on 3 September 1981.
Latest values
| Date | Value - Percentage points |
|---|---|
| 2025-11-10 | 3.52 |
| 2025-11-12 | 3.51 |
| 2025-11-13 | 3.54 |
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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: Fed funds
| Series Name | Observations | Start Date | End Date |
|---|---|---|---|
| Federal funds effective rate (percentage points) - United States - FED Board - Daily | 17950 | 1954-07-01 | 2025-11-13 |
Series in the same data set: Commercial paper
| Series Name | Observations | Start Date | End Date |
|---|---|---|---|
| 30-Day AA Nonfinancial Commercial Paper Interest Rate (percentage points) - United States - FED Board - Daily | 6803 | 1997-01-02 | 2025-11-13 |
| 60-Day AA Nonfinancial Commercial Paper Interest Rate (percentage points) - United States - FED Board - Daily | 6061 | 1997-01-02 | 2025-11-12 |
| 90-Day AA Nonfinancial Commercial Paper Interest Rate (percentage points) - United States - FED Board - Daily | 5227 | 1997-01-02 | 2025-10-31 |
| 30-Day AA Financial Commercial Paper Interest Rate (percentage points) - United States - FED Board - Daily | 6014 | 1997-01-02 | 2025-11-13 |
| 60-Day AA Financial Commercial Paper Interest Rate (percentage points) - United States - FED Board - Daily | 5739 | 1997-01-02 | 2025-11-13 |
| 90-Day AA Financial Commercial Paper Interest Rate (percentage points) - United States - FED Board - Daily | 6632 | 1997-01-02 | 2025-11-13 |
Series in the same data set: 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 | 17911 | 1955-08-04 | 2025-11-13 |
Series in the same data set: Treasury bills
| Series Name | Observations | Start Date | End Date |
|---|---|---|---|
| 4-week Treasury bill secondary market rate (percentage points) - United States - FED Board - Daily | 6074 | 2001-07-31 | 2025-11-13 |
| 3-month Treasury bill secondary market rate (percentage points) - United States - FED Board - Daily | 17958 | 1954-01-04 | 2025-11-13 |
| 6-month Treasury bill secondary market rate (percentage points) - United States - FED Board - Daily | 16718 | 1958-12-09 | 2025-11-13 |
| 1-year Treasury bill secondary market rate (percentage points) - United States - FED Board - Daily | 14882 | 1959-07-15 | 2025-11-13 |