The Supreme Court heard oral arguments on Wednesday in a landmark tariff case that could result in tens of billions in refunds. Jim Watson/AFP/Getty Images

The chances of businesses getting tariff refunds grew significantly on Wednesday after the Trump administration’s case to keep most of his levies in place was met with deep skepticism from multiple conservative and liberal justices.

The big question now: How would potential tariff refunds work?

The federal government has collected nearly $90 billion in revenue from the tariffs being challenged, according to US Customs and Border Protection data as of September 23. That number is set to keep growing at least until a verdict is announced, which could be months from now.

The who

It’s unclear who might be eligible for a refund if

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