{"source":"treasury-rates","note":"Free 5-item preview. The full feed is $0.05/call at GET /v1/treasury-rates/changes.","question":"What is the latest reported average interest rate on Treasury securities, and how did it change since T?","sample":[{"source":"treasury-rates","entityId":"treasury:treasury-rates:Total Interest-bearing Debt","type":"data_point","title":"average interest rate on Treasury securities — Total Interest-bearing Debt: avg rate % 3.353 (2026-05-31)","summary":"US Treasury reported avg rate % of 3.353 for Total Interest-bearing Debt on 2026-05-31.","significance":4,"detectedAt":"2026-07-14T22:21:55.217Z","effectiveDate":"2026-05-31","sourceUrl":"https://fiscaldata.treasury.gov/","detail":{"avg_interest_rate_amt":"3.353","recordDate":"2026-05-31","dimension":"Total Interest-bearing Debt"}},{"source":"treasury-rates","entityId":"treasury:treasury-rates:Total Non-marketable","type":"data_point","title":"average interest rate on Treasury securities — Total Non-marketable: avg rate % 3.201 (2026-05-31)","summary":"US Treasury reported avg rate % of 3.201 for Total Non-marketable on 2026-05-31.","significance":4,"detectedAt":"2026-07-14T22:21:55.217Z","effectiveDate":"2026-05-31","sourceUrl":"https://fiscaldata.treasury.gov/","detail":{"avg_interest_rate_amt":"3.201","recordDate":"2026-05-31","dimension":"Total Non-marketable"}},{"source":"treasury-rates","entityId":"treasury:treasury-rates:Government Account Series Inflation Securities","type":"data_point","title":"average interest rate on Treasury securities — Government Account Series Inflation Securities: avg rate % 1.349 (2026-05-31)","summary":"US Treasury reported avg rate % of 1.349 for Government Account Series Inflation Securities on 2026-05-31.","significance":4,"detectedAt":"2026-07-14T22:21:55.217Z","effectiveDate":"2026-05-31","sourceUrl":"https://fiscaldata.treasury.gov/","detail":{"avg_interest_rate_amt":"1.349","recordDate":"2026-05-31","dimension":"Government Account Series Inflation Securities"}},{"source":"treasury-rates","entityId":"treasury:treasury-rates:Government Account Series","type":"data_point","title":"average interest rate on Treasury securities — Government Account Series: avg rate % 3.194 (2026-05-31)","summary":"US Treasury reported avg rate % of 3.194 for Government Account Series on 2026-05-31.","significance":4,"detectedAt":"2026-07-14T22:21:55.217Z","effectiveDate":"2026-05-31","sourceUrl":"https://fiscaldata.treasury.gov/","detail":{"avg_interest_rate_amt":"3.194","recordDate":"2026-05-31","dimension":"Government Account Series"}},{"source":"treasury-rates","entityId":"treasury:treasury-rates:United States Savings Inflation Securities","type":"data_point","title":"average interest rate on Treasury securities — United States Savings Inflation Securities: avg rate % 4.383 (2026-05-31)","summary":"US Treasury reported avg rate % of 4.383 for United States Savings Inflation Securities on 2026-05-31.","significance":4,"detectedAt":"2026-07-14T22:21:55.217Z","effectiveDate":"2026-05-31","sourceUrl":"https://fiscaldata.treasury.gov/","detail":{"avg_interest_rate_amt":"4.383","recordDate":"2026-05-31","dimension":"United States Savings Inflation Securities"}}]}