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The Trump administration has launched a system allowing businesses to apply for refunds on more than $166 billion in tariffs the Supreme Court ruled were illegally imposed.

Some shit you should know before you dig in: In February, the Supreme Court ruled 6-3 that Trump didn’t have the authority to rely on the 1977 International Emergency Economic Powers Act to roll out his “Liberation Day” tariffs (duties ranging from 10 to 50% on imports from countries around the world). Chief Justice John Roberts wrote the majority opinion, with Trump appointees Neil Gorsuch and Amy Coney Barrett signing on. Trump’s reciprocal tariffs were out, and so was a 25% duty he’d slapped on select goods from Canada, China, and Mexico. By the time the ruling came down, the tariffs had already hit 53 million-plus shipments handled by more than 330,000 importers.

What’s going on now: US Customs and Border Protection opened the refund process Monday through CAPE (Consolidated Administration and Processing of Entries), a system the agency spun up specifically for this rollout. Businesses can now submit claims through a government portal, with refunds expected to be processed within 60 to 90 days. The Cato Institute says the daily interest on that $166 billion is around $22 million, which adds up to about $650 million every month.

This came after roughly 3,000 companies sued the administration to secure their refunds before the portal even launched, including FedEx, Costco, and Toyota.

Despite refunds for businesses, ordinary Americans who paid higher prices as a result of the tariffs have no direct legal recourse. Whether consumers see any benefit depends entirely on whether businesses pass the money on. After significant pressure, FedEx announced it would refund customers who had to pay tariff costs for products coming into the US.

Costco has suggested it could lower prices but has not made a firm commitment, and some shoppers are already suing the retailer over the vague promise.