To look up current Treasury bill interest rates visit Treasury.gov and click Resource Center from the main menu. Next, Select Data and Charts Center and click Daily Treasury Bill Rates. Choose Current Month to view the interest rates of Treasury bills in the four-week, 13-week, 26-week and 52-week maturity tranches.
A table displays the Bank Discount rates and the Coupon Equivalent rates of the most recently auctioned Treasury bills. The quote of a bill in the secondary market is the Bank Discount rate and its yield is the Coupon Equivalent. The Federal Reserve Bank of New York obtains these rates each business day, notes the U.S. Department of the Treasury.