Congressional Budget Office Director Phillip Swagel stated that the United States would require real GDP growth of roughly 5% to 6% to stabilize its national debt trajectory through economic expansion alone. Speaking during a fiscal outlook discussion on October 8 alongside Minneapolis Fed President Neel Kashkari, Swagel outlined the demanding mathematical requirements facing federal fiscal policy.
The CBO director explained that if interest rates remain between 4% and 5%, the nation would need nominal GDP growth of approximately 7% to 8% to keep the debt-to-GDP ratio from rising further. He characterized these figures as rough back-of-the-envelope calculations rather than formal agency projections, according to TokenPost.
While economic expansion naturally boosts federal tax revenues by expanding the tax base, Swagel noted that growth is not a standalone cure for the nation’s fiscal imbalance. Stronger economic activity often brings higher spending pressures, lifting wages and increasing outlays for federal programs like Social Security. , a robust economy typically pushes interest rates higher, which subsequently inflates federal debt-servicing expenses.
Gross federal debt has surpassed $40 trillion, with publicly held debt standing near 100% of GDP. Under current baseline forecasts, the CBO projects that the debt-to-GDP ratio will climb to 120% by 2036. Swagel cautioned that an economic shock pushing interest rates upward could trigger a compounding fiscal cycle where higher borrowing costs feed deficits, which in turn drive interest rates even higher.
Comparing Growth Forecasts and Policy Views
Swagel’s assessment contrasts with more optimistic projections from other economic policymakers. Treasury Secretary Scott Bessent previously argued that achieving 3% economic growth would allow the country to grow out of its long-term debt burden. However, independent estimates from organizations like the Penn Wharton Budget Model suggest sustainable growth would still need to average 3.5% to 4% over a decade to maintain the debt-to-GDP ratio.
The CBO director acknowledged that technological advancements, particularly in artificial intelligence, are contributing to an increase in total factor productivity-measuring the efficiency of labor and capital. The agency plans to incorporate updated views on artificial intelligence into its next round of economic forecasts early next year.
Despite potential productivity gains from new technologies, Swagel warned that the current structural deficit is too deep for growth alone to resolve. With net interest payments ranking as one of the fastest-growing categories of federal spending, policymakers ultimately face difficult political choices regarding legislative changes to both federal revenues and spending programs.
