The US government collected negative tariff revenue last month. Net customs duties receipts came in at -$25.6B in June 2026, marking the first time in American history that the government paid out more in tariff refunds than it brought in from new collections.
The culprit: a massive wave of refunds triggered by the Supreme Court’s February 2026 ruling that struck down the broad tariffs imposed under the International Emergency Economic Powers Act. The government is now unwinding what it collected, and the math is brutal.
How the US ended up owing importers billions
Starting in April 2025, the Trump administration used IEEPA to slap tariffs on goods from multiple countries. When the Supreme Court ruled those tariffs unconstitutional in February 2026, it opened the door for refunds on duties already paid. The estimated refund tab: roughly $166B, which represents approximately three-quarters of all tariff revenue collected between April 2025 and February 2026.
May 2026 offered an early warning sign. Tariff income and refund outlays nearly balanced that month, suggesting the crossover point was approaching. June erased any ambiguity. Refund outflows overwhelmed new collections by $25.6B, producing a number that has never appeared in US fiscal data before.
The fiscal hole gets deeper
The government faces a scenario where it must return the bulk of what it collected. That $166B in estimated refunds doesn’t appear out of thin air. It comes from the same Treasury that is already running substantial deficits.
What this means for crypto investors
Bitcoin traders have been paying attention to this saga since the Supreme Court ruling dropped in February. The initial reaction was a rally, driven by a thesis that sounds simple but carries real weight: if the government loses a revenue stream and responds by printing more money, hard-capped assets become more attractive.
The June data adds fuel to that thesis. A negative tariff revenue print isn’t just symbolically important. It’s a concrete data point showing the fiscal deterioration is real, measurable, and ongoing.
The data to watch going forward is simple: monthly customs revenue prints. If July and August continue showing negative readings, the narrative hardens. Either way, the precedent has been set. For the first time in US history, tariffs cost the government money instead of making it.