The United States federal budget balance moved sharply into deficit in May 2026, reversing course from a sizable surplus just a month earlier. According to data updated on 10 June 2026, the budget position deteriorated from a surplus of $215.0 billion in April 2026 to a deficit of $293.0 billion in May 2026.
The shift reflects a typical post–tax season pattern, with April often boosted by strong tax inflows, followed by a normalization of revenues and ongoing expenditure pressures in subsequent months. The $508.0 billion swing in the federal balance between April and May underscores the volatility of monthly fiscal data and will likely draw close attention from markets tracking the trajectory of U.S. public finances in the second quarter of 2026.
