America’s federal debt has moved beyond the $40 trillion mark, renewing concerns over borrowing costs, refinancing pressure and the potential impact on global financial markets. Devere Group CEO Nigel Green argues that escalating interest expenses could create a self-reinforcing cycle that affects government bonds, equities, currencies, credit markets and households.
- U.S. government debt has remained above $40 trillion.
- The Congressional Budget Office now projects a $2.1 trillion fiscal 2026 deficit, $200 billion higher than its earlier estimate.
- Rising Treasury yields could increase borrowing costs for governments, businesses and consumers worldwide.
- Investors are increasingly debating whether scarce assets such as gold and Bitcoin could provide protection against long-term fiscal and currency risks.
Rising Interest Costs Could Reinforce the Debt Problem
The biggest concern surrounding America’s expanding debt burden is not simply the size of the outstanding balance, but the cost of servicing it.
As older Treasury securities mature, the government must refinance them. If new debt carries higher interest rates, the federal government faces larger interest payments. Those higher payments can then contribute to larger budget deficits, requiring additional borrowing.
Nigel Green, CEO of financial advisory firm Devere Group, describes this as a potentially self-reinforcing cycle in which rising financing expenses create an increasingly expensive debt burden.
According to U.S. Treasury figures cited in the report, total federal debt stood at roughly $40.03 trillion on Aug. 20. Around $32.28 trillion was classified as debt held by the public, while approximately $7.75 trillion consisted of intragovernmental holdings.
The distinction matters because debt held by the public represents obligations owed to investors and institutions outside the federal government, while intragovernmental debt largely reflects obligations between federal accounts.
CBO Raises Its Fiscal 2026 Deficit Forecast
The U.S. fiscal outlook has also deteriorated compared with earlier projections.
The Congressional Budget Office now expects the federal government to record a $2.1 trillion deficit in fiscal 2026, compared with its previous estimate of approximately $1.9 trillion.
The agency has also indicated that changes in trade policy could add significantly to deficits over the following decade.
Long-term projections are similarly concerning. Earlier estimates suggested that publicly held federal debt could rise to around 120% of GDP by 2036. Separate analysis from the Government Accountability Office has projected an even higher ratio under current spending and revenue policies.
Such projections do not represent guaranteed outcomes, but they highlight the growing fiscal challenge facing policymakers.
Higher Treasury Yields Can Reach Consumers
The effects of rising government borrowing are not limited to Washington or Wall Street.
Treasury yields serve as an important reference point for a broad range of financial products, including mortgages, corporate borrowing and other forms of long-term credit.
The average U.S. 30-year fixed mortgage rate was 6.65% on Aug. 20, substantially above the 2.65% level recorded in early 2021.
Mortgage rates do not move in lockstep with Treasury yields, but both are influenced by factors such as inflation expectations, monetary policy and investor demand for long-term securities.
For households, persistently elevated borrowing costs can translate into more expensive home financing and reduced purchasing power.
Foreign Investors Also Face Treasury Risk
The U.S. Treasury market is deeply integrated into the global financial system, meaning international investors are also exposed to changes in American interest rates.
Treasury data showed that foreign investors purchased approximately $207.1 billion of long-term U.S. securities in June.
International demand remains an important source of funding for U.S. government borrowing. However, changes in yields, currency values or investor confidence can affect the value and attractiveness of Treasury holdings for overseas investors.
Treasury has also expanded certain buyback operations involving longer-duration debt. Such transactions can help improve market liquidity and manage some pressures in specific parts of the Treasury market, but they do not reduce the government’s overall debt burden or represent Federal Reserve quantitative easing.
Why Rising Yields Matter for Stocks
The consequences of higher yields can extend well beyond the bond market.
When Treasury yields rise, investors typically demand higher returns from other assets. That can increase financing costs for corporations and reduce the present value assigned to future corporate earnings.
Growth-oriented companies can be particularly sensitive because a larger portion of their expected value may depend on earnings many years into the future.
The result can be increased volatility across stocks, bonds, commodities, currencies and digital assets as investors adjust portfolios to a higher-rate environment.
Green argues that portfolios built during the era of exceptionally low interest rates may be poorly positioned if elevated yields become a more persistent feature of financial markets.
Bitcoin Re-enters the Fiscal Debate
The growing U.S. debt burden is also contributing to renewed discussion around alternative stores of value.
Bridgewater Associates founder Ray Dalio has previously warned that U.S. government debt could climb substantially over the coming decade. He has advocated exposure to gold and a smaller allocation to Bitcoin while reducing dependence on traditional debt instruments.
Bitcoin’s appeal in this debate comes primarily from its predetermined supply limit of 21 million coins. Unlike fiat currencies, whose supply can be expanded through monetary and fiscal systems, Bitcoin’s issuance is governed by its protocol.
That scarcity has led some investors to view Bitcoin as a potential long-term hedge against currency debasement and excessive monetary expansion.
However, Bitcoin remains a highly volatile asset. Its performance during inflationary and macroeconomic shocks has been inconsistent, meaning it should not automatically be treated as a conventional safe-haven asset.
The Bigger Question: How Sustainable Is the Debt Path?
The $40 trillion milestone is less important as a standalone number than what it signals about the trajectory of U.S. borrowing.
If interest expenses continue increasing faster than government revenues, refinancing could become progressively more expensive. Higher Treasury yields could then influence everything from corporate financing and mortgage rates to equity valuations and global investment flows.
For investors, the central issue is therefore not simply how large U.S. debt has become, but whether economic growth, government revenues and borrowing costs can keep pace with the obligations being accumulated.
As fiscal pressures intensify, markets may increasingly price in the consequences — creating a financial environment where government debt, interest rates and asset valuations become more closely interconnected.
