America’s gross national debt has climbed to $40.10 trillion after increasing by $2.67 trillion in less than a year. The pace works out to $5.11 million every minute — while higher interest costs and persistent federal deficits are making the country’s fiscal trajectory increasingly consequential for markets, businesses and the broader economy.
The United States added an average of $5.11 million to its gross national debt every minute over the past year, taking the total to $40.10 trillion and pushing the debt equivalent to $117,279 for every person in the country.
The figures come from the September 2026 Monthly Debt Update released on September 8 by Republican staff of the U.S. Congress Joint Economic Committee, using U.S. Treasury data.
As of September 3, 2026, gross federal debt stood at $40.10 trillion, up $2.67 trillion from September 5, 2025 and $11.68 trillion from five years earlier.
Over the latest one-year period, the increase averaged:
| Measure | Average increase in gross debt |
|---|---|
| Per day | $7.35 billion |
| Per hour | $306.40 million |
| Per minute | $5.11 million |
| Per second | $85,111.72 |
| Increase per person over the year | $7,806.47 |
| Total gross debt per person | $117,279 |
| Total gross debt per household | $297,522 |
Those calculations are based on Treasury debt figures and population and household estimates used by the committee.
The numbers illustrate the extraordinary scale of federal borrowing, but the most important issue is not the psychological significance of crossing $40 trillion.
It is the interaction between continuing deficits, the amount of debt exposed to financial markets and the rapidly rising cost of servicing that debt.
What America’s $40.10 trillion national debt actually means
The $40.10 trillion figure refers to gross federal debt, which is broader than the measure economists typically use when assessing the government’s impact on financial markets.
It has two major components.
As of September 3:
- $32.42 trillion was debt held by the public.
- $7.68 trillion was intragovernmental debt.
Together, they produced the $40.10 trillion headline figure.
The Treasury defines total public debt outstanding as the combination of debt held by the public and intragovernmental holdings. Its Debt to the Penny database reports the total daily.
Debt held by the public consists primarily of Treasury securities held outside federal government accounts. Investors include individuals, financial institutions, investment funds, the Federal Reserve, foreign investors and foreign central banks.
Intragovernmental holdings, by contrast, primarily represent Treasury securities held by federal trust funds and other government accounts.
The distinction is important because the Congressional Budget Office generally focuses on debt held by the public when assessing the economic effects of federal borrowing.
CBO says that measure best captures government borrowing that interacts directly with capital markets and can affect interest rates and private investment.
The $117,279 figure does not mean every American owes the government that amount
The per-person number requires careful interpretation.
Dividing $40.10 trillion of gross debt across the U.S. population produces the JEC’s $117,279 per-person figure. Divided across households, the total is about $297,522 per household.
But that does not mean an American family has received a $297,522 government loan or that every resident personally owes $117,279 to Treasury.
Federal debt is an obligation of the United States government.
It is financed through government revenue and the issuance and refinancing of Treasury securities. The per-capita calculation is primarily a way of communicating the scale of the government’s accumulated liabilities.
That distinction matters for accurate reporting.
The larger economic issue is how the government ultimately finances its commitments — through taxation, spending decisions, economic growth and continued borrowing — and what those choices mean for future taxpayers, investors and businesses.
Federal debt increased $2.67 trillion in one year
The pace of accumulation is particularly striking.
Gross federal debt rose from approximately $37.43 trillion to $40.10 trillion during the latest annual measurement period, an increase of $2.67 trillion.
That is an average increase of more than $7 billion a day.
The rise in debt is closely connected to persistent federal budget deficits, although annual deficits and changes in outstanding debt should not be treated as exactly interchangeable.
A federal deficit measures how much government spending exceeds revenue during a fiscal year.
Treasury borrowing is also affected by other financing requirements, including movements in the government’s cash balance and federal credit programs.
CBO notes that those factors can cause annual changes in debt held by the public to differ from the budget deficit itself.
The underlying direction, however, is unambiguous: Washington continues to spend significantly more than it collects.
The U.S. is projected to run another $1.9 trillion deficit in 2026
The Congressional Budget Office expects the federal government to record a $1.9 trillion deficit in fiscal 2026.
CBO projects approximately:
- $7.4 trillion in federal spending
- $5.6 trillion in federal revenue
- a deficit equal to 5.8% of GDP
That deficit is substantially larger relative to the economy than the 3.8% average recorded over the past 50 years.
And CBO does not expect the gap to disappear.
Under its February 2026 baseline, the annual deficit grows to approximately $3.1 trillion in 2036, or 6.7% of GDP.
The agency’s projections assume laws governing taxes and spending generally remain as specified in its baseline.
Actual outcomes could change considerably with new legislation, economic conditions, inflation, interest rates or other developments.
But the baseline demonstrates the structural nature of the problem.
Even without a severe recession in the forecast, CBO expects deficits to remain unusually large.
Debt held by the public is already roughly the size of the U.S. economy
Nominal debt numbers alone do not tell economists whether a country’s debt burden is sustainable.
A $40 trillion economy, for example, has greater capacity to support a given amount of borrowing than a $10 trillion economy.
For that reason, debt relative to gross domestic product is one of the most important measures.
CBO projects federal debt held by the public at approximately 101% of GDP in 2026.
Under current-law projections, that ratio rises to:
120% of GDP by 2036.
That would be significantly above the previous U.S. record of approximately 106% of GDP in 1946, immediately following World War II.
CBO expects the previous record to be surpassed around 2030.
Over its longer projection horizon, the agency says debt held by the public could reach approximately 175% of GDP by 2056 under its extended baseline.
That trajectory matters more economically than any single trillion-dollar milestone.
It indicates debt increasing faster than the productive economy available to support it.
Interest costs are becoming a second major fiscal problem
The government does not simply have to repay or refinance principal.
It must also pay interest.
And that cost has risen sharply as both the quantity of debt and the interest rates attached to Treasury securities have increased.
The average interest rate on total marketable federal debt stood at 3.475% in August 2026, according to the Joint Economic Committee’s compilation of Treasury data.
A year earlier it was 3.415%.
Five years earlier it was just 1.458%.
That difference is enormously consequential when applied across tens of trillions of dollars of securities.
Not every Treasury security reprices immediately when market interest rates change. The government has bills, notes and bonds with different maturities, meaning refinancing occurs progressively as securities mature.
But as older low-rate debt is replaced with newly issued securities, higher borrowing costs increasingly feed into the federal budget.
CBO projects net interest spending of about $1 trillion in fiscal 2026.
By 2036, it expects the figure to reach approximately:
$2.1 trillion a year.
Net interest would rise from 3.3% of GDP in 2026 to 4.6% in 2036.
At that point, CBO says net interest expenditure would nearly equal all federal discretionary spending combined.
More debt creates an increasingly expensive feedback loop
The arithmetic can become self-reinforcing.
Large deficits require Treasury to borrow.
Additional borrowing increases the outstanding stock of debt.
More debt means additional interest payments.
Those interest payments increase federal spending and, unless covered by higher revenue or reductions elsewhere, contribute to future deficits.
Those deficits then require additional borrowing.
CBO projects net interest costs will grow by an average of about 7.5% annually between 2026 and 2036, more than doubling over the decade.
Interest rates themselves are another risk.
CBO estimated in April that if Treasury rates were just 0.1 percentage point higher each year than in its baseline forecast, additional interest costs on existing baseline debt would reach roughly $49 billion in 2036 and total about $323 billion between 2027 and 2036.
That demonstrates how sensitive the federal budget has become to relatively small changes in borrowing costs.
Treasury expects to borrow another $739 billion this quarter
The financing requirement is not theoretical.
The Treasury Department said in August that it expects to borrow $739 billion in privately held net marketable debt during the July-to-September 2026 quarter, assuming a $950 billion cash balance at the end of September.
That estimate was $68 billion higher than Treasury projected in May.
For the October-to-December quarter, Treasury expects another $628 billion in privately held net marketable borrowing.
Treasury continues to finance the government through regular auctions of bills, notes, bonds, Treasury Inflation-Protected Securities and floating-rate notes.
In August alone, Treasury announced a $125 billion refunding package involving three-, 10- and 30-year securities, refinancing approximately $96.3 billion of privately held notes and bonds while raising roughly $28.7 billion of new cash.
The department says its debt-management objective is to finance the federal government at the lowest cost over time while maintaining regular and predictable issuance and a liquid Treasury market.
Treasury demand remains strong, but the volume matters
America benefits from something few countries possess: the world’s deepest government bond market and a currency central to the international financial system.
Treasury securities serve not simply as government borrowing instruments but as critical assets throughout global finance.
They are held by banks, investment funds, pension funds, central banks and private investors and are widely used as collateral and benchmarks for other borrowing costs.
The September JEC update showed bid-to-cover ratios above 2 for several major Treasury auctions in August — generally an indication that auction demand remained substantial.
The reported ratios were:
- 2.97 for four-week Treasury bills
- 2.53 for 10-year notes
- 2.39 for 30-year bonds
That does not eliminate longer-term fiscal concerns.
The relevant question is increasingly not whether Treasury can sell securities today, but the price at which investors will absorb a steadily larger supply over time.
Why national debt matters to companies and investors
For businesses, the federal debt debate is not confined to Washington.
Treasury yields form an important foundation for financial pricing.
Corporate bonds, mortgages, business loans, private-market investment decisions and equity valuations are all influenced directly or indirectly by the level of risk-free interest rates.
CBO says higher federal borrowing can compete with private borrowers for savings, placing upward pressure on interest rates and reducing private investment over the longer term.
That process is commonly described as crowding out.
When government borrowing absorbs more available savings, the cost of capital can increase and less capital may ultimately be available for private investment.
CBO warns that large and rising debt could therefore:
- raise economy-wide borrowing costs;
- reduce private investment;
- slow economic output;
- increase federal exposure to higher interest rates;
- reduce policymakers’ capacity to respond to future emergencies;
- and increase the long-term risk of financial disruption.
For founders and growth companies, those effects matter.
Higher long-term interest rates can increase financing costs, reduce the present value investors place on future earnings and make riskier investments less attractive relative to government securities.
Social Security, Medicare and interest costs are driving spending higher
America’s fiscal imbalance cannot be attributed to one line of spending.
CBO’s projections show federal outlays rising from 23.3% of GDP in 2026 to 24.4% in 2036.
The primary drivers are increasing spending on major mandatory programs — particularly Social Security and Medicare — alongside rising net interest costs.
Federal revenue, meanwhile, is projected to move much less.
CBO expects revenue of:
17.5% of GDP in 2026
and
17.8% in 2036.
That leaves a persistent structural gap between what the government receives and what it spends.
Reducing that gap substantially would require some combination of stronger economic growth, spending restraint, changes to entitlement programs, higher revenue or other fiscal reforms.
How those adjustments should be distributed remains fundamentally a political question.
The mathematics is not.
There is no magic number at which U.S. debt automatically becomes a crisis
Crossing $40 trillion does not mean the United States has reached a predetermined point of insolvency.
Sovereign governments — particularly countries borrowing in currencies they control — do not operate like households.
Debt sustainability depends on the size and growth of the economy, interest rates, government revenue, inflation, investor confidence and demand for sovereign securities, among other factors.
The United States also benefits from the scale and liquidity of the Treasury market and the global role of the dollar.
But those advantages do not make debt growth costless.
CBO’s concern is principally about the trajectory.
The agency says large and growing debt can progressively raise interest costs, crowd out investment, make government finances more sensitive to changes in rates and reduce policymakers’ ability to respond to unexpected economic or national-security events.
It also warns that continued deterioration ultimately increases the risk — however difficult to predict or time — of investors losing confidence in federal debt.
At the recent pace, $41 trillion could arrive in early 2027
The Joint Economic Committee calculated that if gross debt continues increasing at its average daily rate of the past three years, the United States would reach $41 trillion around January 16, 2027.
Under that particular extrapolation, another $1 trillion would take approximately 151 days to accumulate.
That is not an official Treasury or CBO forecast.
Debt growth varies with federal receipts, spending, cash-management decisions and legislation, so the actual date could be earlier or later.
But the calculation demonstrates how much the scale of federal finance has changed.
A trillion dollars is no longer an extraordinary unit used only to describe the accumulated national debt.
It is now a unit used to discuss annual deficits, annual increases in borrowing and eventually annual interest expenses.
The bigger story is no longer $40 trillion — it is the trajectory
The September figures establish several facts simultaneously.
Gross U.S. federal debt has reached $40.10 trillion.
It has increased $2.67 trillion in roughly one year.
About $32.42 trillion is debt held by the public.
The increase averaged $5.11 million every minute.
And gross debt is now equivalent to approximately $117,279 for every person in the United States.
Yet none of those figures, individually, captures the entire fiscal challenge.
The deeper issue is that the federal government is continuing to run large deficits while the cost of financing the accumulated debt is rising.
CBO expects debt held by the public to rise from roughly the size of the economy today to 120% of GDP within a decade, while annual net interest expenses double to approximately $2.1 trillion.
That increasingly turns America’s national debt from an accounting statistic into an economic constraint.
For Washington, the challenge is how to bring spending and revenue onto a more sustainable long-term path without unnecessarily weakening growth or creating abrupt economic disruption.
For investors and businesses, the question is what persistent federal borrowing will mean for Treasury yields, the cost of capital, investment and asset valuations.
And for the United States, the most consequential number may ultimately not be whether the debt is $40 trillion, $41 trillion or $50 trillion.
It is whether debt and the interest required to service it continue to grow faster than the economy supporting them.
Reporting note: Gross-debt and per-capita calculations in this article are from the September 2026 Monthly Debt Update published by Republican staff of the U.S. Congress Joint Economic Committee using Treasury data. Treasury’s Fiscal Data platform is the primary source for federal debt outstanding. Budget, GDP and long-term fiscal projections are from the nonpartisan Congressional Budget Office. The $117,279-per-person figure is a statistical allocation of gross federal debt across the population and is not an individual financial liability.