Trump-backed fiscal bill could add $3 trillion to U.S. debt pile

UBS analysts project that the "One Big Beautiful Bill Act," currently under Senate discussion, could add over $3 trillion to the existing $36.2 trillion U.S. debt, potentially raising budget deficits to 7% of GDP by 2027 from 6.4% last year. The bill, which includes tax cuts and increased spending, has sparked investor concern over rising U.S. debt levels, leading to higher term premia for longer-dated Treasuries; however, UBS suggests that the Fed's credibility, the dollar's reserve status, and deep stock markets mitigate immediate repayment concerns, emphasizing that GDP growth is crucial to stabilizing the debt trajectory.

Analysis

Analysts at UBS are highlighting significant fiscal risks associated with the "One Big Beautiful Bill Act" currently under Senate deliberation. Citing Congressional Budget Office data, UBS projects the bill could add over $3 trillion to the U.S. national debt, which already stands at approximately $36.2 trillion, or over 120% of GDP. This legislative package, featuring tax reductions and increased defense and immigration spending, is also forecast to push the federal budget deficit to around 7% of GDP by 2027, an increase from 6.4% last year. These fiscal expansion concerns have already manifested in investor behavior, with term premia for longer-dated U.S. Treasuries rising, and equity investors wary of potential impacts on financing costs and future taxation. Despite these concerns, UBS notes that the Federal Reserve's credibility, the U.S. dollar's reserve currency status, and the depth of U.S. stock markets suggest the nation's ability to repay its debt is not immediately threatened. However, UBS emphasizes that sustainable GDP growth, driven by prudent trade policies, AI-enhanced productivity, infrastructure investment, and favorable demographics, remains the critical factor for stabilizing or reversing the U.S. debt trajectory.

Key Decisions for Investors

• Investors should closely monitor the legislative progress of the "One Big Beautiful Bill Act" and any modifications, given its substantial potential impact on U.S. debt levels and budget deficits.
• Consider potential increased volatility in the U.S. Treasury market, particularly for longer-dated bonds, and evaluate exposure to interest rate risk in portfolios.
• Assess the implications of rising sovereign debt and potential higher financing costs on equity valuations, particularly for companies sensitive to interest rate changes or future tax increases, while also tracking leading indicators of U.S. GDP growth which UBS identifies as a key mitigator.