US national debt passes $40tn after doubling in a decadeIt comes after the interest rate on 30-year bonds reached the highest level in almost 20 years.2 hrs agoUS & Canada

US national debt passes $40tn after doubling in a decade.

Key points

• The Congressional Budget Office (CBO) had projected overall borrowing would reach $39.6tn only by the end of fiscal year 2026.
• The CBO notes the US is nearing its $41.1tn debt ceiling, with debt projected to climb to concerning $64tn by 2036.
• In comparison, IMF figures show the UK and China's debt-to-GDP ratios are 103.6% and 106.9%, respectively.
• As of 18 August, covers all outstanding Treasury bonds, bills and notes, and underscores the scale of US borrowing under two presidents, the $40.05tn sum.
• At present, the average interest rate on 30-year fixed mortgages is 6.67%, according to finance firm Freddie Mac.

US national debt passes $40tn after doubling in a decade. Francisco Velasquez, Business reporters, New York.

US national debt has more than doubled in a decade to reach a milestone $40tn (£29.4tn), Treasury figures show.

Meanwhile, the rise reflects years of heavy spending under both the Donald Trump and Joe Biden administrations, along with higher interest payments that have steadily continued to the total. In 2016, the national debt stood at just under $20tn.

For context, the Congressional Budget Office (CBO) had projected overall borrowing would reach $39.6tn only by the end of fiscal year 2026.

Notably, the faster-than-expected rise has sharpened reservations concerning how rapidly the government's borrowing needs are growing, and what that means for future interest costs.

Meanwhile, the CBO notes the US is nearing its $41.1tn debt ceiling, with debt projected to climb to concerning $64tn by 2036.

As the federal administration spends more capital to cover its budget deficits, consumers have faced higher interest rates and inflation.

In practice, the interest rate on 30-year bonds. It are a type of debt applied to raise funds from investors, hit 5.34% on Tuesday – the highest level in almost 20 years.

Those rates, known as yields, influence how much the US administration, businesses, and consumers pay to borrow – affecting mortgages, car loans, and credit cards.

In practice, the recent surge in bond yields has been driven by rising oil rates linked to the US-Iran war, with investors worried over inflation.

There are additionally worries over administration debt and the enormous amounts of cash being borrowed by tech firms to develop artificial intelligence (AI), with the timeline and level of returns on investment uncertain.

In practice, the Treasury Department remarked its intervention reflected its "desire to provide greater liquidity support" for longer-term bonds.

It confirmed it would rise its buyback operations by "at least double" from $2bn to $4bn and will be effective from 9 September to 4 November.

In practice, the rate on borrowing costs over 30 years eased on the back of the move to 5.18%.

John Canavan, lead analyst at Oxford Economics, remarked the Treasury's decision to rise purchases appeared to be an "attempt to provide relief" on long-term borrowing costs. It had been under "significant pressure from rising oil prices, inflation risks, and heavy supply due to global sovereign and corporate borrowing needs".

But he remarked given the size of outstanding Treasury debt, the rise in buybacks from the administration was "unlikely to provide meaningful long-term relief".

Rene Albrecht, senior analyst at DZ Bank in Germany, remarked the US administration feared the "pain of 5% or higher yields" over the long term not just since it raised borrowing costs for the administration, but additionally the private sector.

"It's only three months until the midterm elections, " Albrecht remarked. "They have had to grab into the toolkit in order to get a hand on the recent rise in yields."

But economist Mohamed A. El-Erian remarked that, beyond the bond market reaction to push down longer-term borrowing costs, the move by the Trump administration was concerning the possibility of a broader strategy to keep control of interest rates – known as "yield curve control".

While the move can support bring down longer-end yields in the immediate and short term, and thereby assist lower mortgage and other borrowing costs, "it risks collateral damage and unintended consequences", he continued in a social media post.

Global borrowing costs hit fresh highs over oil, AI and inflation reservations. US inflation eases as food and fuel costs cool.

Notably, the amount the US owes compared to its annual economic output – known as its debt-to-gross domestic product (GDP) ratio – is 125.8%, according to the International Monetary Fund (IMF). It is one of the highest among the world's largest economies.

After decades of spending to backing an ageing population and fragile economic expansion, Japan has the highest debt burden amongst the world's major economies with a debt-to-GDP ratio of more than 200%.

Notably, the US has longer-term fixed mortgage deals than other countries such as the UK.

At present, the average interest rate on 30-year fixed mortgages is 6.67%, according to finance firm Freddie Mac. While borrowing costs for homeowners have been rising, they remain lower than in 2023 when such deals averaged 7.7%.

Minutes published on Wednesday by the Federal Reserve. It sets US interest rates, disclosed that reservations over inflation deepened among policymakers at its last gathering.

It remarked there were "several participants" in favour of climbed rates last month. The central bank concluded up holding its benchmark interest rate in the current 3.50%-3.75% range for the fifth time in a row.

Plenty of participants additionally noted rate hikes would "likely be necessary if inflation did not decline", with some suggesting interest rates were not high enough to see rate rises fall back to the Fed's 2% target for inflation.

Meanwhile, the Fed is projected to hold its policy rate steady again at its September gathering after recent data indicated inflation eased slightly and firms unexpectedly shedding jobs in July.

Taken together, the developments around US national debt passes $40tn after doubling in a decadeIt comes after point to a situation that is still moving, and the coming days should bring more clarity.