4-week 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 4-week T-bill secondary-market rate stood at 3.61 percent on 14 May 2026, compared to 3.60 on 13 May.
Sample. There are 6,199 data points overall in the daily series displayed in the figure above. The series covers the time period going from July 2001 to May 2026.
History. Here's a peek at some statistics computed on the entire sample: the interest rate peaked at 5.78 percent on 26 May 2023; it reached its minimum of -0.04 on 25 March 2020; it averaged 1.65.
Latest values
| Date | Value - Percentage points |
|---|---|
| 2026-05-12 | 3.6 |
| 2026-05-13 | 3.6 |
| 2026-05-14 | 3.61 |
Suggestion. To simplify research, we group indicators into data sets and worksheets. By moving down the page, you will discover how we structured further material related to the statistics published here.
Not for investment purposes. Data accessible on this web site are not meant for investment purposes or as a basis for financial-decision making. Users should seek expert advice and do their own independent due diligence before pledging money to any investment.
Series Metadata
| Field | Value |
|---|---|
| Description | 4-week 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 | 18074 | 1954-07-01 | 2026-05-13 |
Commercial paper
| Series Name | Observations | Start Date | End Date |
|---|---|---|---|
| 30-Day AA Nonfinancial Commercial Paper Interest Rate (percentage points) - United States - FED Board - Daily | 6913 | 1997-01-02 | 2026-05-14 |
| 60-Day AA Nonfinancial Commercial Paper Interest Rate (percentage points) - United States - FED Board - Daily | 6143 | 1997-01-02 | 2026-05-14 |
| 90-Day AA Nonfinancial Commercial Paper Interest Rate (percentage points) - United States - FED Board - Daily | 5278 | 1997-01-02 | 2026-05-12 |
| 30-Day AA Financial Commercial Paper Interest Rate (percentage points) - United States - FED Board - Daily | 6049 | 1997-01-02 | 2026-05-13 |
| 60-Day AA Financial Commercial Paper Interest Rate (percentage points) - United States - FED Board - Daily | 5758 | 1997-01-02 | 2026-05-07 |
| 90-Day AA Financial Commercial Paper Interest Rate (percentage points) - United States - FED Board - Daily | 6697 | 1997-01-02 | 2026-05-13 |
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 | 18035 | 1955-08-04 | 2026-05-08 |
Treasury bills
| Series Name | Observations | Start Date | End Date |
|---|---|---|---|
| 4-week Treasury bill secondary market rate (percentage points) - United States - FED Board - Daily | 6199 | 2001-07-31 | 2026-05-14 |
| 3-month Treasury bill secondary market rate (percentage points) - United States - FED Board - Daily | 18083 | 1954-01-04 | 2026-05-14 |
| 6-month Treasury bill secondary market rate (percentage points) - United States - FED Board - Daily | 16843 | 1958-12-09 | 2026-05-14 |
| 1-year Treasury bill secondary market rate (percentage points) - United States - FED Board - Daily | 15007 | 1959-07-15 | 2026-05-14 |