President Donald Trump’s economic agenda, which emphasizes lowering costs across the U.S. economy, faces new challenges as the yield on the 10-year Treasury bond—a benchmark interest rate closely watched by his administration—has climbed to its highest level since the start of his second term. The yield reached 4.7 percent this week, up from less than 4 percent before late February when tensions escalated following the onset of hostilities involving Iran.

The 10-year Treasury yield influences borrowing costs across various sectors, including corporate debt and consumer mortgages. Its recent rise complicates efforts to maintain affordable borrowing conditions for both businesses and households in the United States. The housing market has felt immediate effects, with the average rate on a 30-year fixed mortgage climbing to 6.58 percent, according to Freddie Mac. That figure compares to rates below 6 percent just weeks before the U.S. and Israel launched strikes against Iran.

Economists warn that the recent increase in yields could further suppress home sales unless rates stabilize or decline. Nancy Vanden Houten, lead U.S. economist at Oxford Economics, noted that the upward movement in rates poses a significant risk to market recovery.

Several factors are driving the higher yields. Inflation expectations have risen partly due to surging oil prices, but analysts also point to rising growth prospects tied to investments in artificial intelligence infrastructure. The anticipation of stronger economic growth tends to push yields upward, as investors seek higher returns to compensate for inflation risks and potential overheating of the economy.

Global fiscal pressures also contribute to the trend. Government borrowing has surged worldwide, prompting investors to demand higher yields. In the United Kingdom, 10-year gilt yields have jumped by nearly one percentage point to exceed 5 percent, influenced by concerns over new fiscal policies under Prime Minister Andy Burnham. Similarly, Japan’s 30-year government bond yields have increased by 0.7 percentage points amid significant government spending initiatives.

The U.S. government’s national debt stands near $40 trillion, more than double the level from ten years ago, adding to apprehensions about long-term fiscal sustainability. Subadra Rajappa, an interest rate strategist at Société Générale, emphasized that rising bond yields reflect a global trend related to debt levels and deficits.

Additionally, heavy borrowing by large technology firms leading the artificial intelligence expansion exerts upward pressure on borrowing costs across the corporate sector. Other companies must offer higher interest rates to attract investment when competing with these tech giants.

Treasury Secretary Scott Bessent has previously referenced the 10-year Treasury yield as a key indicator of the administration’s success in promoting affordability. The current rise in yields, however, signals increased borrowing expenses for both firms and consumers, potentially undermining this goal.

While inflation remains a concern, analysts suggest it has been largely contained for now. Nonetheless, Federal Reserve Chairman Kevin Warsh faces mounting pressure to demonstrate a commitment to controlling inflation. Market participants warn that failing to act decisively could prolong inflation fears and push long-term Treasury yields even higher.

Jonathan Hill, an inflation strategist at Barclays, remarked that the United States has experienced more than five years of inflation rates above target levels and that markets appear prepared for this trend to continue for years rather than months. This outlook further complicates the economic landscape for the Trump administration as it navigates its broader fiscal and monetary policy objectives.