WASHINGTON, May 4 (Reuters) - The U.S. Customs and Border Protection (CBP) agency said on Monday it now estimates the first electronic refunds from U.S. President Donald Trump’s tariffs deemed illegal by the Supreme Court will start as soon as May 12, a day later than an earlier estimate.The estimated start date for Automated Clearing House (ACH) payments was disclosed in a message to shippers announcing the availability of status reports that allow claimants to monitor the processing status of their refunds. In a Court of International Trade order last week, the agency was expected to start refunds around May 11. No reason was given for the date change.Up to $166 billion of CBP collections from Trump’s tariffs imposed under the International Emergency Economic Powers Act are subject to CBP refunds. The Supreme Court ruled that Trump overstepped his authority in using the 1977 sanctions law to impose tariffs.(Reporting by David Lawder: Editing by Neil Fullick)The NewsCan't Wait.Neither Can We.Your SupportFuelsOur MissionYour SupportFuelsOur MissionSupport HuffPostMisinformation spreads fast. Fact-based reporting is how we fight back. Your membership funds the reporters holding power accountable every single day. Join HuffPost and be part of our mission.We remain committed to providing you with the unflinching, fact-based journalism everyone deserves.Thank you again for your support along the way. We’re truly grateful for readers like you! Your initial support helped get us here and bolstered our newsroom, which kept us strong during uncertain times. Now as we continue, we need your help more than ever. We hope you will join us once again.We remain committed to providing you with the unflinching, fact-based journalism everyone deserves.Thank you again for your support along the way. We’re truly grateful for readers like you! Your initial support helped get us here and bolstered our newsroom, which kept us strong during uncertain times. Now as we continue, we need your help more than ever. We hope you will join us once again.“Our fierce, independent reporting and unvarnished perspective hold power to account and inform millions of readers. Please support this hard-hitting journalism.”Whitney SnyderEditor-in-Chief HuffPostSupport $5/monthSilverMonthly recurring supporter-only emailFewer requests for financial supportSupport $10/monthGoldEverything in the Silver TierAd-free access on the HuffPost website OR HuffPost appsSay goodbye to annoying video interruptions while you read. No more autoplay videos.Support $20/monthPlatinumEverything in the Gold TierAd-free access on the HuffPost website AND HuffPost appsEarly access to new featuresMembership to Platinum Club focus groupMake a One Time ContributionJoin HuffPostAlready a member? Log in to hide these messages.Close