Q&A of customs clearance process Q & A of Customs Clearance Process Is customs clearance compulsory for every shipment? How long does it take for my shipment to clear customs? Can my shipment be stuck in customs? What if my shipment is not stuck in customs but being held there? How long can customs hold my shipment? Will I pay customs charges for my shipment? Do I need to pay import duties when exporting cargo? How about if I use a customs broker? 6 Tips on making the Customs Clearance Process much easier.