Interest Rate Statistics - Daily Treasury Bill Rates Metadata Updated: February 7, 2020 These rates are the daily secondary market quotation on the most recently auctioned Treasury Bills for each maturity tranche (4-week, 13-week, 26-week, and 52-week) that Treasury currently issues new Bills. Graph and download economic data for 3-Year Treasury Constant Maturity Rate (DGS3) from 1962-01-02 to 2020-03-12 about 3-year, maturity, Treasury, interest rate, interest, rate, and USA. Fiscal Service A-Z Index. This A–Z Index lists all Fiscal Service content. You can also view just the Programs & Services.