Artem Voloskovets
Higher interest rates are making the debt load more expensive. Treasury securities issued during the low-rate period are being refinanced at higher yields, lifting federal interest expenses toward $1 trillion annually.
The mechanics are increasingly restrictive:
Large deficits → more Treasury issuance → higher interest costs → larger future borrowing needs.
Long-term yields show the pressure. The 30-year Treasury yield recently touched 5.34%, increasing the cost of refinancing and forcing investors to absorb growing Treasury supply at higher rates.
The effects extend beyond the federal budget. Treasury yields set the benchmark for mortgages, corporate debt and many asset valuations. Higher government borrowing costs can therefore tighten financial conditions even without additional Federal Reserve rate hikes.
| Key figure | Level |
| Total federal debt | ~$40.05T |
| Debt held by the public | ~$32.27T |
| FY2026 deficit through July | ~$1.8T |
| Recent 30Y Treasury yield peak | 5.34% |
The key variable is no longer the $40 trillion threshold. It is the yield required to finance the next trillion dollars of debt. If Treasury supply continues expanding while investors demand higher returns, fiscal policy itself becomes a source of tighter financial conditions.
Artem Voloskovets
