Debt burden crosses postwar threshold
The US national debt has exceeded the size of its economy for the first time since the aftermath of World War II, a milestone that is sharpening concerns among investors and rating agencies about the country’s fiscal direction.
Data released in recent days shows that debt held by the public reached roughly $31.27 trillion in March, slightly overtaking annual gross domestic product of about $31.22 trillion. The crossover underscores how persistent deficits and rising borrowing needs have pushed the world’s largest economy into unfamiliar territory among advanced nations.
While the US has long carried significant debt, its ability to borrow at relatively low cost has helped sustain confidence. That advantage now faces closer scrutiny as analysts warn that the gap between spending and revenue is unlikely to narrow in the near term.
Fitch flags structural deficits and policy concerns
Fitch Ratings has cautioned that the country’s credit profile could weaken further if current trends continue. The agency, which downgraded the US from its top-tier rating in 2023, maintains a AA+ assessment but signalled that fiscal conditions remain a key pressure point.
Analysts pointed to what they described as persistently large deficits, projecting that the general government shortfall could approach 7.9 percent of GDP both this year and in 2027. A combination of tax reductions, spending commitments, and uncertain revenue streams has contributed to the outlook.
Policy decisions tied to recent tax legislation are expected to add trillions of dollars to federal debt over the coming decade. At the same time, anticipated income from tariffs may fall short following a court ruling that invalidated much of the current framework, potentially removing a significant source of projected revenue.
Fitch also highlighted broader governance concerns, noting that repeated political standoffs over the debt ceiling have eroded confidence in fiscal policymaking. These episodes have periodically raised the risk of delayed payments on government obligations, an outcome that would have significant global repercussions.
Moody’s has already taken a similar stance, lowering its US rating by one notch last year and citing growing deficits alongside higher interest costs as key drivers.
Why the US remains an outlier among advanced economies
Despite these pressures, the US retains advantages that continue to support its credit standing. The dollar’s role as the world’s primary reserve currency, combined with deep and liquid financial markets, gives the government a level of flexibility that most countries do not enjoy.
However, the scale of borrowing now places the US in a distinct position compared with other highly rated economies. Countries such as Canada and Australia maintain top-tier ratings with comparatively lower debt burdens relative to output.
Historical comparisons also illustrate the shift. According to data compiled by the Congressional Budget Office, US debt levels remained below GDP for decades following the postwar period, only accelerating sharply after the global financial crisis and again during pandemic-era spending.
The trajectory raises questions about long-term sustainability. Research from the International Monetary Fund has shown that higher debt ratios can limit governments’ ability to respond to future economic shocks, particularly if borrowing costs rise.
For investors, the issue is less about immediate default risk and more about the gradual erosion of fiscal flexibility. As interest payments consume a larger share of the federal budget, fewer resources remain for infrastructure, defence, and social programmes.
Higher borrowing costs could ripple across the economy
The most immediate consequence of a weaker credit profile would likely be higher borrowing costs. If investors demand greater compensation to hold US debt, yields on Treasury securities could rise, feeding through to mortgage rates, corporate financing, and consumer loans.
Such a shift would affect not only government finances but also business investment and household spending. Even modest increases in interest rates can have a broad impact given the scale of US credit markets.
Looking ahead, attention will centre on whether policymakers can stabilise deficits without slowing economic growth. Upcoming budget negotiations and potential adjustments to tax and spending priorities will be closely watched by markets.
The current trajectory does not point to an abrupt crisis, but it signals a gradual tightening of financial conditions that could shape the next phase of the economic cycle.
