Nowflation › Open data › Treasury FiscalData › fiscal_interest_monthly
Latest value: $92.59 billion for September 2026, +1.4% year over year (against September 2025). 105 monthly observations from January 2018 to September 2026, in billions of US dollars. Source: Treasury FiscalData (FISCAL route); context series, not an input to the Nowflation CPI Gauge.
| Period | Value |
|---|---|
| September 2026 | $92.59 billion |
| August 2026 | $97.77 billion |
| July 2026 | $117.57 billion |
| June 2026 | $185.2 billion |
| May 2026 | $132.62 billion |
| April 2026 | $111.6 billion |
| March 2026 | $102.64 billion |
| February 2026 | $93.48 billion |
| January 2026 | $71.89 billion |
| December 2025 | $154.37 billion |
| November 2025 | $96.25 billion |
| October 2025 | $104.4 billion |
Download CSV · Download JSON · embed: <iframe src="https://nowflation.com/embed?series=fiscal_interest_monthly" width="360" height="180" loading="lazy"></iframe>
Cite: Nowflation, “Interest expense on the public debt (monthly, $B)” (fiscal_interest_monthly), data from Treasury FiscalData, retrieved October 18, 2026, https://nowflation.com/series/fiscal_interest_monthly. The series at its source: Treasury FiscalData.
Total public debt outstanding ($B) · Treasury General Account closing balance ($M) · Customs duties deposited (daily, $M) · PCE price: Public transportation
Related: Series directory · Open data · Methodology