6-month 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 6-month T-bill secondary-market rate stood at 3.61 percent on 30 March 2026, compared to 3.60 on 27 March.
Sample. This daily series has 16,810 data points overall. The period covered by the series goes from December 1958 to March 2026.
History. Here’s a quick look at a few summary statistics we calculated on the entire sample: the interest rate reached its minimum of 0.02 percent on 26 August 2011; it reached its highest level of 15.93 on 21 May 1981; it had a mean value of 4.48.
Latest values
| Date | Value - Percentage points |
|---|---|
| 2026-03-26 | 3.62 |
| 2026-03-27 | 3.6 |
| 2026-03-30 | 3.61 |
Tip. One of the pluses of using our web site is that we publish accurate metadata. Check it below to learn more about the attributes of the indicators that you are exploring.
Not for investment purposes. Data series and other information provided on this web site are not not supposed to be used for investment purposes or as a basis for financial-decision making. Users should consult professional advice and do their own independent due diligence before taking any financial risk.
Series Metadata
| Field | Value |
|---|---|
| Description | 6-month 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 | 18042 | 1954-07-01 | 2026-03-30 |
Commercial paper
| Series Name | Observations | Start Date | End Date |
|---|---|---|---|
| 30-Day AA Nonfinancial Commercial Paper Interest Rate (percentage points) - United States - FED Board - Daily | 6886 | 1997-01-02 | 2026-03-30 |
| 60-Day AA Nonfinancial Commercial Paper Interest Rate (percentage points) - United States - FED Board - Daily | 6120 | 1997-01-02 | 2026-03-30 |
| 90-Day AA Nonfinancial Commercial Paper Interest Rate (percentage points) - United States - FED Board - Daily | 5257 | 1997-01-02 | 2026-03-26 |
| 30-Day AA Financial Commercial Paper Interest Rate (percentage points) - United States - FED Board - Daily | 6036 | 1997-01-02 | 2026-03-11 |
| 60-Day AA Financial Commercial Paper Interest Rate (percentage points) - United States - FED Board - Daily | 5754 | 1997-01-02 | 2026-03-18 |
| 90-Day AA Financial Commercial Paper Interest Rate (percentage points) - United States - FED Board - Daily | 6679 | 1997-01-02 | 2026-03-24 |
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 | 18006 | 1955-08-04 | 2026-03-30 |
Treasury bills
| Series Name | Observations | Start Date | End Date |
|---|---|---|---|
| 4-week Treasury bill secondary market rate (percentage points) - United States - FED Board - Daily | 6166 | 2001-07-31 | 2026-03-30 |
| 3-month Treasury bill secondary market rate (percentage points) - United States - FED Board - Daily | 18050 | 1954-01-04 | 2026-03-30 |
| 6-month Treasury bill secondary market rate (percentage points) - United States - FED Board - Daily | 16810 | 1958-12-09 | 2026-03-30 |
| 1-year Treasury bill secondary market rate (percentage points) - United States - FED Board - Daily | 14974 | 1959-07-15 | 2026-03-30 |