Debate Desk
Was the National Debt Caused by Tax Cuts Rather Than Spending?
Tax cuts add to deficits, but spending has grown faster than revenue for decades; the gap is mostly a spending problem with a revenue side.
The claim
Many on the left say the national debt has been driven mainly by tax cuts for the wealthy and for corporations, and that spending has not been out of control. If Congress had kept the earlier tax rates, they say, the budget would be close to balance.
The answer in three points
- A deficit is the difference between two numbers, and both sides matter. Revenue has hovered near a stable share of the economy for fifty years, while spending has trended higher, and the gap is the deficit.
- The biggest drivers of future spending are not discretionary programs but the large entitlement programs, along with interest on the debt itself. A tax rate cannot offset growth in those programs without much larger increases on everyone.
- Both sides should admit their part. Conservatives who cut taxes without cutting spending added to the shortfall, and liberals who expanded programs without paying for them did too. A balanced answer says: restrain spending, grow the economy, and do not pretend that one lever is enough.
In the end the argument is about priorities. A family that finds its bills rising faster than its pay does not blame the last raise it declined; it looks at what it is buying. The same logic applies to the federal budget, where the largest programs are growing by formula and nobody votes on the increase. Any honest plan names the spending it would slow, the taxes it would change, and the growth it expects.
The numbers
- The Congressional Budget Office reports that federal revenue has averaged about 17 percent of gross domestic product over the past fifty years, while outlays have averaged about 21 percent.
- The Treasury reported a fiscal 2024 deficit of about $1.8 trillion, with total outlays near $6.75 trillion, according to the Monthly Treasury Statement.
- The Treasury's Debt to the Penny reported total public debt of $40.56 trillion on November 5, 2026.
What they will say next
"Revenue fell after the cuts of 2001 and 2003." Revenue did dip with the recession that followed, and it recovered as the economy grew. The recurring shortfall was larger than the cuts, because spending on wars, a new drug benefit and domestic programs rose in the same years.
"Spending grew because the population is aging." That is correct, and it is the point. The programs are set by law to grow, and no tax code is written to pay for them without large changes.
"Raise taxes and the problem is solved." The sums needed are very large, and taxes high enough to cover them would reach the middle class. If the public wants a European-sized government, it should be told it will pay a European-sized bill.
"Defense spending is the culprit." Defense is a smaller share of the budget than it was in the Cold War and a smaller share than the combined cost of the large health and retirement programs. Savings there are worth seeking, but they cannot close a gap of this size.