Businesses across the United States are fighting over billions in possible tariff refunds after courts ruled many Trump-era tariffs unlawful. The growing legal battle could impact importers, consumers, trade policy, and the future of U.S. tariffs.

Large corporations are pushing back against tariff taxes in 2026, filing lawsuits and refund claims that could reshape trade costs and tax planning. CPAs warn businesses to track import expenses closely as legal outcomes may impact profits, cash flow, and future tax reporting.