{
  "ok": true,
  "source": "U.S. Department of the Treasury",
  "sourceName": "Fiscal Data, average interest rates on Treasury securities",
  "sourceUrl": "https://fiscaldata.treasury.gov/datasets/average-interest-rates-treasury-securities/",
  "endpoint": "https://api.fiscaldata.treasury.gov/services/api/fiscal_service/v2/accounting/od/avg_interest_rates?sort=-record_date&page[size]=40",
  "retrievedAt": "2026-10-05T04:01:55.713Z",
  "fieldFormat": "10.2%",
  "asOf": "2026-08-31",
  "rows": [
    {
      "securityType": "Marketable",
      "security": "Treasury Bills",
      "rate": "3.788"
    },
    {
      "securityType": "Marketable",
      "security": "Treasury Notes",
      "rate": "3.345"
    },
    {
      "securityType": "Marketable",
      "security": "Treasury Bonds",
      "rate": "3.453"
    },
    {
      "securityType": "Marketable",
      "security": "Treasury Inflation-Protected Securities (TIPS)",
      "rate": "1.134"
    },
    {
      "securityType": "Marketable",
      "security": "Treasury Floating Rate Notes (FRN)",
      "rate": "3.845"
    },
    {
      "securityType": "Marketable",
      "security": "Federal Financing Bank",
      "rate": "2.383"
    },
    {
      "securityType": "Marketable",
      "security": "Total Marketable",
      "rate": "3.475"
    },
    {
      "securityType": "Non-marketable",
      "security": "Domestic Series",
      "rate": "7.577"
    },
    {
      "securityType": "Non-marketable",
      "security": "Special Purpose Vehicle",
      "rate": "2.878"
    },
    {
      "securityType": "Non-marketable",
      "security": "State and Local Government Series",
      "rate": "3.349"
    },
    {
      "securityType": "Non-marketable",
      "security": "United States Savings Securities",
      "rate": "3.145"
    },
    {
      "securityType": "Non-marketable",
      "security": "United States Savings Inflation Securities",
      "rate": "4.496"
    },
    {
      "securityType": "Non-marketable",
      "security": "Government Account Series",
      "rate": "3.558"
    },
    {
      "securityType": "Non-marketable",
      "security": "Government Account Series Inflation Securities",
      "rate": "1.392"
    },
    {
      "securityType": "Non-marketable",
      "security": "Total Non-marketable",
      "rate": "3.559"
    },
    {
      "securityType": "Interest-bearing Debt",
      "security": "Total Interest-bearing Debt",
      "rate": "3.490"
    }
  ]
}