U.S. Treasury Reports $164 Billion March Deficit as War Costs Loom and Tariff Revenues Soften

The U.S. federal deficit rose to $164 billion in March 2026 as war spending delays and a Supreme Court tariff ruling impacted the Treasury’s bottom line.

By: AXL Media

Published: Apr 10, 2026, 3:11 PM EDT

Source: Information for this report was sourced from Reuters

Fiscal Impact of Policy Shifts and Agricultural Aid

The U.S. Treasury Department reported on Friday that the federal budget deficit increased by 2% year-on-year, reaching $164 billion for the month of March. This slight expansion was primarily attributed to a sharp rise in individual and corporate tax refunds following the implementation of new fiscal breaks. Additionally, the federal government saw a significant increase in relief payments directed toward the agricultural sector. These payments were necessitated by ongoing disruptions to global fertilizer and grain markets caused by the regional conflict in the Middle East, which has forced the administration to subsidize domestic food security.

Delayed Recognition of Conflict-Related Expenses

Despite the onset of full-scale military operations against Iran in late February, the March budget data does not yet reflect the true scale of the war's financial burden. Military and defense program outlays rose by a modest 3% to $65 billion during the conflict's first full month. Treasury officials clarified that this figure represents immediate operational costs but does not include the multibillion-dollar expenditures required to replenish depleted missile and munitions inventories. These "lagging" expenses are anticipated to materialize in late spring and summer as procurement contracts are finalized and fulfilled.

Judicial Rollback of Emergency Tariff Revenue

A notable drag on federal receipts in March was the softening of customs duty collections. Following the U.S. Supreme Court’s decision to annul President Donald Trump’s broad global tariffs—which had been imposed under an emergency national security law—customs receipts fell to $22.2 billion. This is a significant decline from the $26.6 billion collected in February and the $30 billion monthly averages seen late last year. While collections remain substantially higher than the $8.2 billion recorded in March 2025, the judicial intervention has removed a significant stream of revenue the administration had relied on to offset military spending.