U.S. Federal Debt Exceeds $40 Trillion
The total amount of U.S. federal government debt has surpassed $40 trillion, reaching a historic high; this figure includes both publicly held debt and intra-governmental debt, reflecting the cumulative result of years of fiscal deficits.
The debt milestone was reached earlier than previously anticipated by the Congressional Budget Office (CBO). The CBO had originally projected that U.S. public debt would approach $39.4 trillion by the end of the fiscal year, but the actual total crossed the $40 trillion mark in August, indicating that the demand for fiscal financing is growing faster than earlier predictions.
The direct source of the debt increase is the ongoing federal fiscal deficit: government spending has long exceeded tax revenue, with Social Security, Medicare, Medicaid, defense spending, and interest on the national debt contributing to significant expenditure pressure; when refinancing maturing debt, the high interest rate environment also raises the cost of new interest payments.
As old debt is gradually refinanced at higher coupon rates, net interest expenditure has become one of the fastest-growing items in the federal budget. The yield on 30-year U.S. Treasury bonds has risen to 5.33%, the highest level in about 19 years, and the rising long-term financing costs further increase the cost for the Treasury to issue new debt and roll over existing debt.
Reaching $40 trillion does not mean the government will immediately face a payment crisis: U.S. debt is denominated in dollars, and the Treasury can meet nominal payments through tax revenue and continued borrowing; however, the expansion of debt means that more future budget revenue will need to be allocated for interest payments, compressing the flexibility of fiscal policy in times of recession, war, or bailout events.
In market mechanisms, the Treasury is a continuous net supplier of government bonds, while banks, money market funds, pension funds, insurance companies, overseas official institutions, and asset management firms are the main buyers. New supply requires higher yields or greater absorption by the private sector to clear; if overseas demand is insufficient, funds may shift from stocks, credit, and other risk assets to government bonds, causing term premiums to rise and putting pressure on long-duration tech stocks, housing, and highly leveraged companies, while cash flow strong, short-duration assets and companies with pricing power benefit relatively.
Source: Public Information
ABAB AI Insight
U.S. debt has risen from about $10 trillion before the 2008 financial crisis to $40 trillion, following financial crisis bailouts, tax cuts, COVID-19 fiscal relief, and ongoing deficits. The expansion of debt is not a one-time spending event, but rather a cumulative result of each crisis raising the spending baseline, tax revenues not being permanently adjusted upwards, and the aging population increasing welfare expenditures; disputes over the debt ceiling can only temporarily limit the timing of bond issuance, but cannot eliminate the fiscal gap already authorized by Congress.
The core of the capital path is "fiscal deficit—government bond issuance—private capital absorption—interest rate repricing." The Treasury finances through short-term, medium-term, and long-term bonds, with money market funds absorbing short-term debt at high short-end rates, banks and overseas holders adjusting duration, while pension funds and insurance companies allocate long-term bonds according to long-term liability needs. If fiscal supply continues to exceed marginal demand, the market will require a higher term premium; this will transmit fiscal pressure throughout the capital market via mortgage rates, corporate bonds, private financing, and equity discount rates.
This differs significantly from the high debt period in the U.S. after World War II: at that time, the U.S. relied on higher nominal growth, financial repression, and lower interest rates to gradually reduce the debt burden; currently, population growth is slower, welfare spending is more rigid, and the inflation target limits the central bank's ability to keep nominal interest rates low for long periods. Japan's long-term high debt is buffered by domestic savings, a high domestic holding ratio, and large-scale bond purchases by the central bank, while the U.S. relies more on global private capital to continuously absorb tradable government bonds.
Essentially, it is about the transfer of pricing power. Once the debt scale becomes large enough, Treasury bond issuance is no longer just a supply of risk-free assets, but will affect the risk-free interest rates and term premiums across the entire market; bond investors, by demanding higher returns, indirectly determine the prices of housing, corporate financing, equity valuations, and the government's future fiscal space. As long as deficits persist, debt rolls over, and interest rates exceed nominal economic growth, fiscal dominance will continually erode the independence of monetary policy.
ABAB News · Law of Cognition
Debt is not a cost; interest is the cost.
Deficits today are stimulus; tomorrow they are discount rates.
The greater the supply of government bonds, the higher the capital prices.