United States - 1-Year Treasury Bill Secondary Market Rate was 1.28% in March of 2022, according to the United States Federal Reserve. Historically, United States - 1-Year Treasury Bill Secondary Market Rate reached a record high of 14.70 in August of 1981 and a record low of 0.05 in May of 2021. Trading Economics provides the current actual value, an historical data chart and related indicators for United States - 1-Year Treasury Bill Secondary Market Rate - last updated from the United States Federal Reserve on March of 2024.