The Trump administration told a federal court on Thursday how it will refund companies after its sweeping “Liberation Day” tariffs were struck down by the Supreme Court last month.

The Supreme Court ruled 6-3 last month that the sweeping global tariffs imposed using the International Emergency Economic Powers Act were unlawful, and a judge on the U.S. Court of International Trade later ordered refunds for all unlawfully collected tariffs shortly after the high court’s decision. In one case in which companies are pursuing tariff refunds, Brandon Lord, executive director of Customs and Border Protection’s Trade Policy and Programs directorate, filed a sworn declaration outlining the new web portal being developed for companies to file refund requests.