The Credit Line Divide
The U.S. Treasury borrowed an average of $50 billion per week between October 2025 and February 2026, adding $1 trillion to the federal deficit in just five months, the Congressional Budget Office reported. During the same period, nearly 24% of American households had expenses exceeding 95% of their income, Bank of America Institute data from November 2025 shows, a gap that reveals borrowing capacity as the fundamental divider in American economic life.
The federal government borrowed $308 billion in February 2026 alone. Public debt now stands at $38.9 trillion. For families living paycheck to paycheck, that kind of credit access doesn't exist. When expenses exceed income, they cut spending, miss payments, or turn to high-interest credit cards. The government simply issues more debt.
How Debt Service Becomes Dead Money
Between October 2025 and February 2026, the Treasury spent $433 billion servicing public debt, $31 billion more than the same period the previous year. That money bought nothing: no roads, no healthcare, no defense capabilities. It simply paid interest on previous borrowing.
Maya MacGuineas, president of the Committee for a Responsible Federal Budget, projects interest payments will exceed $1 trillion in fiscal year 2026 and reach $2 trillion by 2036. The CBO attributed the increase to larger debt and higher long-term interest rates, though short-term rate declines provided some offset. The acceleration creates a compounding problem: as debt grows, interest costs consume more revenue, requiring more borrowing, which generates more interest costs.
For context, the Committee for a Responsible Federal Budget recommends a deficit-to-GDP ratio of 3%. The actual figure has hovered between 5% and 6% in recent years. The gap between responsible fiscal policy and current practice widens each quarter.
The Spending Divergence
The borrowing divide plays out in household spending patterns that mirror federal behavior. Higher-income households increased spending 2.5% year-over-year in January 2026, per Bank of America Institute data. Lower-income households managed just 0.3% growth. Middle-income families fell between at 1% growth.
The top 20% of earners now account for nearly 60% of all U.S. consumer spending, Moody's Analytics found. That concentration reflects wage growth disparities: higher-income households saw wages rise 3.7% year-over-year in January 2026, while middle-income families experienced growth just under 1.6%. The gap between high-income and all other households' spending growth reached its highest level since mid-2022 as of January 2026.
Those with resources spend more; those without spend what they must and no more. The federal government operates on the first principle, households increasingly on the second.
Where the Money Comes From
The deficit actually improved compared to the previous year, but not through spending discipline. Between October 2024 and February 2025, the government borrowed $142 billion more than it did in the same period of fiscal year 2026. The improvement came entirely from revenue increases.
Customs duties collections were more than four times the amount recorded in the first five months of fiscal year 2025, an increase of $109 billion. Individual income and payroll taxes together increased by $132 billion. A Supreme Court ruling on February 20, 2026 affected how customs duties collected in 2025 were counted, though the CBO report doesn't detail the impact.
Total spending reached $3.1 trillion in the first five months of fiscal year 2026, just $64 billion more than the same period in fiscal year 2025. Outlays for Social Security, Medicare, and Medicaid rose by $104 billion. The Department of Defense and Department of Veterans Affairs increased spending, while the Department of Agriculture, Department of Homeland Security, and Department of Education reduced outlays. The Environmental Protection Agency decreased spending by $20 billion.
The revenue picture reveals a transfer mechanism: tariffs quadrupled, generating $109 billion in new collections. Those costs don't disappear, they pass through to consumer prices. The government improved its balance sheet by effectively taxing consumption, hitting hardest the households already spending every dollar they earn.
The Structural Lock
Economists typically focus on debt-to-GDP ratio rather than absolute debt levels when assessing fiscal sustainability. By that measure, the U.S. can sustain significant borrowing as long as economic growth keeps pace. Government debt serves as a foundation for global financial markets, providing the risk-free assets that anchor everything from pension funds to central bank reserves.
But the interest payment trajectory creates a structural problem that GDP growth alone can't solve. When debt service costs rise faster than revenue, even with massive tax increases, the system requires either spending cuts, further revenue increases, or accelerating borrowing. The first five months of fiscal year 2026 showed the government chose the third option while implementing the second.
The $109 billion tariff increase represents new money extracted from the economy. Yet interest costs grew $31 billion in the same period, consuming nearly 30% of that new revenue before it could reduce borrowing needs. The gap between what new taxes raise and what growing interest costs demand narrows each quarter.
Two Systems, One Economy
The federal government and American households both increased their reliance on credit over the past five months, but only one faces consequences for overextension. The Treasury borrowed $50 billion weekly and will continue borrowing at similar rates. Households at 95% expense-to-income ratios have no such option.
The spending gap between high-income and lower-income households, 2.5% growth versus 0.3%, reflects access to credit as much as wage differences. Those with borrowing capacity maintain spending growth even when wages stagnate. Those without cut back. The federal government's unlimited credit line places it firmly in the first category, even as its policies push more households into the second.
MacGuineas's projection of $2 trillion in annual interest payments by 2036 assumes current trajectories continue. That figure would represent roughly 30% of current total federal spending, all of it buying nothing but the ability to maintain existing debt. The question isn't whether that's sustainable by economic measures, debt-to-GDP ratios can accommodate significant loads. The question is whether a system that borrows $50 billion weekly while a quarter of its households spend every dollar they earn can maintain that arrangement without transferring ever more costs downward through mechanisms like the tariffs that just quadrupled.