U.S. National Debt Tops $40 Trillion as Annual Interest Outlays Hit $1.25 Trillion
Resolved · macro data · Occurred · Assessed · 1 sources
This assessment is dated 2026-09-28. Check what remains unresolved below before relying on it.
What changed relative to expectations?
Higher mandatory debt service elevates Treasury bill and coupon auction sizes, steepening the 10Y term premium.
| Question | What the evidence establishes |
|---|---|
| What was reported? | Reported factUnited States gross national debt has surpassed $40 trillion. |
| What else was confirmed? | Reported factAnnual interest costs on the national debt reached $1.25 trillion in 2025. |
| Does the valuation support acting? | UnknownRequires applying the change to specific holdings. |
| What would change the assessment? | UnknownTreasury Quarterly Refunding Statement — Announcement of auction sizes for 10-year and 30-year coupon issuances. |
What would this event cost your holdings?
Apply your own hypothetical returns to current holding values. The calculator does not infer security effects from this event.
Test this event against my holdingsPublic research record
Research framework · page evidenceCompleted event assessment
higher 10Y yield via term-premium repricing and auction supply expansion
| Type | Claim | Scope |
|---|---|---|
| Assumption | United States gross national debt has surpassed $40 trillion. | 2026-09-28 |
| Interpretation | higher 10Y yield via term-premium repricing and auction supply expansion | DGS10 |
Countercase, invalidators, and sources
Treasury relies heavily on short-dated T-bills to mitigate long-end supply pressure.
- · Treasury Quarterly Refunding Statement — Announcement of auction sizes for 10-year and 30-year coupon issuances.
- The United States Debt Just Passed an Auspicious Milestone · 2026-09-26
What remains unresolved
- Base path
- Increased auction sizes across 10Y and 30Y tenors maintain elevated benchmark yields.
- Adverse path
- Primary dealer auction bid-to-cover ratios soften, driving rapid term-premium widening.
- Supportive path
- Treasury relies heavily on short-dated T-bills to mitigate long-end supply pressure.
- · Treasury Quarterly Refunding Statement — Announcement of auction sizes for 10-year and 30-year coupon issuances.next month
Evidence
- The United States Debt Just Passed an Auspicious Milestone2026-09-26
“U.S. national debt has surpassed $40 trillion with interest costs hitting $1.25 trillion in 2025.”
Supports: U.S. national debt has surpassed $40 trillion with interest costs hitting $1.25 trillion in 2025.