Source: Board of Governors of the Federal Reserve System (US)
Latest Data: Click here
Frequency: Annual

This is the annual average for the interest rate on three-month Treasury bills, as reported by the Federal Reserve Board of Governors and as reflected in the St. Louis Fed's "FRED" database. 

Suggested Citation: Board of Governors of the Federal Reserve System (US), 3-Month Treasury Bill: Secondary Market Rate [TB3MS], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/TB3MS.