For years, the United States benefited from a bond market that was calm, predictable, and willing to finance federal borrowing at historically low interest rates. That era is ending. A new set of structural pressures is reshaping who buys U.S. debt, how much they demand in return, and what it means for the federal budget. One of these pressures is inflation that is running persistently above the Federal Reserve’s target of 2%.
Bond Buyers Want Returns that Outpace Inflation
Bond buyers care about the inflation‑adjusted return they receive, and when they expect prices to rise faster in the future, they demand higher yields to compensate. Bond buyers also consider inflation uncertainty a risk and will price that into bond yields as well. The current inflation environment has three sources of risk in the near to medium term:
- The volatility of the Trump administration’s tariff policy: The Trump Administration has shifted tariff policy more than 50 times since taking office in January 2025. Overall the effective tariff tax has increased from less than 3% to more than 11% over the past year and a half. At times in 2025 the effective rate was above 16%. Importers and foreign exporters generally pass a substantial share of tariff taxes onto domestic consumers, raising retail price tags for affected products like electronics, appliances, and apparel
- The Iran war’s impact on oil prices: Since the start of the Iran war in February average gas prices have increased from below $3 a gallon to above $4 a gallon, an increase of more than 35%. Overall inflation surged from an annual rate of 2.4% in February to 4.2% in May. The rate cooled down to 3.4% in July. However, continued uncertainty around the prospects for ending the conflict has led to persistently high oil prices.
- Federal Reserve Chairman Warsh’s hesitancy to provide clear guidance on future Federal Reserve policy decisions which adds to the uncertainty about when and how the Federal Reserve will take action to reduce inflation which remains above the Fed’s target of 2%.
This dynamic is already visible in recent Treasury auctions and secondary‑market trading. Investors are building in a premium for inflation risk, pushing long‑term yields higher than the Federal Reserve’s short‑term policy rate (see Figure 1). The result: higher borrowing costs for the federal government, even without additional Fed rate hikes. Perhaps counter-intuitively, the Federal Reserve may need to raise short-term interest rates to tamp down inflation and reduce the yield on 10-year and 30-year treasury bonds.
Figure 1
However, the bond market is also signaling that long-term inflation expectations are running at about 2.3%, even as inflation is currently at 3.7% according to the Personal Consumption Expenditure Index, the Fed’s preferred inflation measure. These expectations are reflected in the 10-year breakeven inflation rate which indicates where market participants expect inflation to be in the next 10 years, on average (see Figure 2). These expectations change depending on the risks discussed above and other economic factors.
From a Federal budget perspective, while inflation increases federal revenues as well as spending for certain programs, the effects (excluding the influence that inflation has on interest rates) on the government’s receipts and outlays are mostly offsetting. However, if actual inflation exceeds CBO’s assumption of 2.0% and there is a corresponding increase in interest rates, then CBO estimates for each 0.1% increase in inflation and interest rates there is a $311 billion increase in the 10-year deficit.
Figure 2
The Bottom Line
Inflation may seem like a separate economic challenge, but its effects ripple directly through the bond market and the federal budget. As investors demand higher compensation for rising prices and greater uncertainty, borrowing costs increase for both the government and the private sector. While the United States retains significant economic strengths, persistent inflation and growing fiscal pressures underscore the importance of putting the nation on a more sustainable budget path before higher interest costs become an even greater burden.
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