Marlowe Research
U.S. National Debt Clock — Confidential Report
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The U.S. National Debt Clock
Real-time fiscal data from the U.S. Treasury — updated every 30 seconds.
and counting
Debt Per Citizen
Debt Per Taxpayer
Interest
Interest Outlook
Estimated federal interest burden over the next 12 months based on current rates
Interest Rate Tipping Point
At what average interest rate does interest consume all tax revenue?
At an average rate of 6.7%, half of all federal tax revenue would go to interest alone. At 13.4%, the government would need every dollar of tax revenue just to pay interest — with nothing left for defense, Social Security, or Medicare.
Based on current debt of $39.00T and annual federal revenue of $5.23T. Sources: US Treasury, FRED
What If? Interest Rate Simulator
Drag the slider to see how different interest rates affect the federal budget
Drag the gauge needle or use the slider
Based on current debt of $39.00T and annual federal revenue of $5.23T. This is a simplified model — actual fiscal dynamics involve maturity schedules, inflation, and economic feedback loops.
US National Debt — 20 Year History
Source: FRED GFDEBTN (Total Public Debt, Quarterly)
Current
$38.51T
Period Start
Apr 1, 2006: $8.42T
Period End
Oct 1, 2025: $38.51T
Change
+$30.09T
% Change
+357.4%
Forecast
Debt Trajectory — 10-Year Projection
Statistical extrapolation based on 5-year compound growth rate with 68% and 95% confidence intervals
Current Trajectory uses 6.8% 5-year CAGR from FRED GFDEBTN quarterly data. Balanced Budget tapers growth to 2% (inflation only) over 5 years. Austerity reduces debt by ~1% annually after a 3-year taper. Stimulus models 1.5× current growth rate. Confidence bands reflect ±1σ/±2σ of historical volatility (3.5%).
Context
Debt in Context
Key economic indicators that drive and reflect the national debt trajectory
Consumer Price Index
327.5
Measures average change in prices paid by urban consumers. Rising CPI erodes purchasing power.
+2.66% YoY
FRED CPIAUCSL
M2 Money Supply
$22.67T
Total money in circulation including savings and money market funds. Rapid growth can signal inflation.
+4.88% YoY
FRED M2SL
Federal Surplus / Deficit
$-1.77T
Annual difference between government revenue and spending. Persistent deficits grow the debt.
Deficit
FRED FYFSD
Debt Milestones
How long it took to add each $5 trillion — and the acceleration is alarming
It took 205 years to reach the first $1 trillion in debt, but only 2.5 years to add the most recent $5 trillion. At the current pace, the debt is projected to hit $40 trillion by 2026.
Sources: US Treasury Historical Debt Outstanding, Congressional Budget Office
Historical
Debt by President
How much each administration added to the national debt — from FDR to today
DEBT ACCUMULATION
Debt by President
PARTY TOTALS
Source: U.S. Treasury Historical Debt Outstanding · BEA GDP data
Debt in Perspective
How does the national debt compare to other major US economic benchmarks?
Federal Reserve, Q3 2025
Siblis Research, Jan 2026
Zillow, Sep 2025
US Treasury, Live
BEA / FRED, 2025
World Gold Council, 2025
SIFMA, Q3 2025
US Treasury, FY2025
Debt / GDP
124%
Debt exceeds annual GDP
Debt / Housing
71%
Debt = 71% of all US homes
Debt / Stock Market
57%
Debt = 57% of all US stocks
Fiscal
Federal Spending & Revenue
Ratios
Key Fiscal Ratios
US Federal Debt to GDP Ratio
US Federal Deficit to GDP Ratio
Spending
Largest Budget Items
Federal spending breakdown by category (FY 2025/2026 estimates)
Economy
Economy & Population
Macro
Global Macro Context
Key economic indicators from Trading Economics that shape the fiscal landscape
Housing Starts
1,487
U.S. Census Bureau
Global
Debt Race — Who Owes the Most?
Animated comparison of national debt accumulation across the world's largest economies
5.7T
124% GDP
5.3T
252% GDP
1.2T
64% GDP
850B
113% GDP
550B
101% GDP
180B
84% GDP
Data: IMF World Economic Outlook, World Bank WDI, national treasury departments. Values in USD trillions (approximate, subject to exchange rate fluctuations for non-US economies). US data supplemented with live FRED GFDEBTN series.
Alerts
Milestone Notifications
Stay informed when the national debt crosses the next trillion-dollar threshold
Milestone Alerts
Get notified when the national debt crosses the next $1 trillion threshold.