The federal government now spends more than $1 trillion a year on interest payments. That number passed defense spending in 2024. It will pass Social Security within the decade if borrowing costs hold. Into this environment, Congress just widened the fiscal gap by 45%.
The refund checks will clear. The GDP print will look good. And the market will read a leveraged consumption advance as proof that the economy is healing. It isn't. The 2026 tax cuts are structured to produce exactly one strong quarter of headlines while compounding the debt-service burden that will constrain every future policy response.
A Familiar Pattern With Worse Math
In 1981, Reagan signed the Economic Recovery Tax Act and promised supply-side growth would close the revenue gap. Deficits tripled. By 1985, interest costs forced Gramm-Rudman-Hollings, and the White House spent its second term negotiating the fiscal mess its first term created. The math was bad then. It is worse now.
Consider a married couple earning $95,000 with 2 kids. Under the new law, their tax cut works out to roughly $3,750. Good news, until you factor in tariffs running at 16.9%, the highest effective rate since 1932. The Institute on Taxation and Economic Policy calculates that for every income group except the richest 5%, the combined effect of the tax cuts, tariffs, and the expired health premium credits is a net tax increase. That $3,750 refund doesn't survive contact with $1,200 in higher annual goods costs and $700 in lost premium subsidies. The money goes out, and the money comes back in through the other pocket.
JPMorgan's 0.5 to 0.8% Q1 GDP boost assumes 80% of extra refunds get spent. Grant it. That amounts to 0.27% of GDP from refunds alone. Annualize it, call it a win. But 0.27% of GDP bought for a 45% increase in the structural fiscal gap is not stimulus. It is a leveraged position with no stop-loss.
Who Gets Paid Last
The distribution tells you everything about durability. Most tax benefits land between the 50th and 90th income percentiles; families above $130,000 get substantially more. The bottom 2 quintiles get nothing from capital gains indexation, which could add $170 billion to $950 billion in debt by 2035 while delivering an average $350,000 tax savings to the top 0.1%. Those earners don't cycle that money through local economies at high velocity. They cycle it through portfolios.
Meanwhile, Oxford Economics just cut its 2026 growth forecast to 1.9% from 2.5%, primarily on energy costs. The "largest tax refund season of all time" that the White House promised in December is colliding with gas prices that eat refund dollars before they reach discretionary spending. Growth was slowing before the refunds hit. The refunds are a painkiller, not a cure.
The honest concession: making the 20% small business deduction permanent removes genuine uncertainty for millions of small firms, and that has real value for capital planning. But permanence in a deduction also means permanence in the revenue hole, and nobody has identified the offset.
Here is the core problem. The CRFB projects that within 5 years, interest on federal debt will exceed GDP growth. That is the definition of a debt spiral: the servicing cost grows faster than the economy's ability to generate revenue. Every dollar of tax cut that isn't offset accelerates the timeline. The Supreme Court already eliminated $1.7 trillion in projected tariff revenue through 2036 by striking down the administration's trade authority. The offset is gone. The spending isn't.
A household that borrows against its home equity to fund a vacation reports higher spending that quarter. Nobody calls it a recovery. The 2026 tax cuts produce the same accounting illusion at sovereign scale, and the interest rate on the national credit card is no longer zero. Reagan's deficits at least had falling rates to cushion the landing. We have $39 trillion in debt and a 10-year yield that refuses to cooperate.
