{"feed":{"connector":"treasury-interest-rates","fetchedAt":"2026-10-22T23:06:12.354Z","sha256":"833b295c47e1ecc5b6e276cae2ed36f76d06aa0635e8fe3c994ef7bc87f12279","sourceUrl":"https://api.fiscaldata.treasury.gov/services/api/fiscal_service/v2/accounting/od/avg_interest_rates?sort=-record_date&page[size]=100","archiveStatus":"Awaiting immutable official source archive.","sourceUpdatedAt":"2026-09-30T00:00:00Z","metrics":[{"id":"marketable-rate","title":"Average interest rate · total marketable Treasury securities","label":"Average interest rate · total marketable Treasury securities","value":3.518,"unit":"percent","period":"2026-09-30","releaseDate":null,"sourceId":"treasury-interest-rates","retrievedAt":"2026-10-22T23:06:12.354Z","status":"Latest Official","vintage":"Official source import · 2026-09-30","series":[{"period":"2026-04-30","value":3.373},{"period":"2026-05-31","value":3.386},{"period":"2026-06-30","value":3.411},{"period":"2026-07-31","value":3.443},{"period":"2026-08-31","value":3.475},{"period":"2026-09-30","value":3.518}],"method":"Read the Total Marketable average interest rate in the Treasury API. Source units are percentage points; divide by 100 only when computing the interest illustration.","caveat":"Treasury debt cost benchmark, not a market yield or a holder-specific return. The record date is not a publication date.","suffix":"%","precision":3}]},"raw":"{\"data\":[{\"record_date\":\"2026-09-30\",\"security_type_desc\":\"Marketable\",\"security_desc\":\"Treasury Bills\",\"avg_interest_rate_amt\":\"3.870\",\"src_line_nbr\":\"1\",\"record_fiscal_year\":\"2026\",\"record_fiscal_quarter\":\"4\",\"record_calendar_year\":\"2026\",\"record_calendar_quarter\":\"3\",\"record_calendar_month\":\"09\",\"record_calendar_day\":\"30\"},{\"record_date\":\"2026-09-30\",\"security_type_desc\":\"Marketable\",\"security_desc\":\"Treasury Notes\",\"avg_interest_rate_amt\":\"3.383\",\"src_line_nbr\":\"2\",\"record_fiscal_year\":\"2026\",\"record_fiscal_quarter\":\"4\",\"record_calendar_year\":\"2026\",\"record_calendar_quarter\":\"3\",\"record_calendar_month\":\"09\",\"record_calendar_day\":\"30\"},{\"record_date\":\"2026-09-30\",\"security_type_desc\":\"Marketable\",\"security_desc\":\"Treasury 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