US debt hits $40 trillion as borrowing costs threaten to spiral A staggering milestoneAmerica’s national debt has officially crossed the $40 trillion mark, a staggering milestone that underlines just how rapidly the United States is piling up obligations — and why economists and financial experts are becoming increasingly alarmed.The Treasury Department confirmed that federal debt reached the record level on Tuesday. What makes the figure particularly striking is the speed at which it has arrived. The US had less than $20 trillion in federal debt fewer than 10 years ago. At the current rate of increase, the country could reach $50 trillion within another six years. This is no longer simply a number on a government balance sheet. The consequences are increasingly being felt across the American economy. The debt is growing fasterThe US national debt increased by approximately $1 trillion in just five months, while the federal government has already accumulated a staggering $1.8 trillion deficit during the first 10 months of the current fiscal year. In other words, Washington continues to spend substantially more than it collects in taxes and other revenue. That is happening despite the US economy not being in an economic depression or financial crisis. The concern is that if the government cannot control its finances during relatively good economic times, the problem could become considerably worse when the next recession or major emergency arrives. An ageing America adds to the pressureOne of the biggest long-term problems is demographic. Around 10,000 Baby Boomers are retiring every day, while Americans are living longer. That means the government is paying out more for Social Security and Medicare while the proportion of working-age people supporting those programmes becomes relatively smaller. Those costs are difficult to escape politically because they involve programmes millions of Americans depend upon. At the same time, Washington has repeatedly combined tax cuts with higher spending. The 2017 Tax Cuts and Jobs Act, the Covid-era relief packages under Donald Trump and Joe Biden, and Trump's 2025 One Big Beautiful Bill have all added significantly to future borrowing requirements. The uncomfortable reality is that both parties have contributed to America's debt mountain. Now comes the interest billPerhaps the most dangerous development is what America is paying simply to service its existing debt. Interest payments are expected to exceed $1 trillion this fiscal year, more than tripling in just five years. That puts interest costs roughly level with Medicare and makes them one of the federal government's largest expenses, behind Social Security. Washington is now spending more on interest than on national defence. That money cannot be spent twice. Every additional dollar required to service old borrowing is a dollar unavailable for infrastructure, defence, healthcare, tax relief or other government priorities. And there is a vicious cycle developing: more debt produces more interest, which requires more borrowing, which produces still more debt. Investors are beginning to demand moreThe problem is also spreading into financial markets. The yield on America's 30-year Treasury bond recently reached its highest level since 2007, while the 10-year Treasury yield remains near its highest level of Donald Trump's second term. Investors are increasingly demanding higher returns for holding US government debt. That matters because Treasury yields influence borrowing costs throughout the economy. Higher yields can mean more expensive mortgages, car loans and business loans, putting pressure on consumers and making companies more reluctant to invest. And there is an unpleasant twist for Washington: higher interest rates also make the government's own debt more expensive to refinance. The $50 trillion questionAmerica still possesses enormous financial advantages. The dollar remains the world's dominant reserve currency and US Treasury securities remain among the most important assets in global financial markets. But those advantages should not be confused with unlimited borrowing capacity. The United States has already lost its last perfect credit rating, with Moody's downgrading American debt in 2025. Congress has repeatedly raised the debt ceiling rather than confronting the underlying problem. The latest increase of $5 trillion means the next debt-ceiling confrontation is unlikely to arrive until 2027. That buys Washington time — but it does not solve the problem. The real warning contained in the $40 trillion milestone is not simply that America owes an extraordinary amount of money. It is that the debt is growing faster, the interest bill is exploding and investors are demanding more to finance it. At some point, the world's richest country will have to decide whether it can continue borrowing its way out of every problem — or finally confront the bill coming due. SOURCE
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