The National Tax Service and the Customs Service jointly searched for 16 high-value and malicious delinquent taxpayers, seizing a total of 1.3 billion won worth of hidden assets. Mr. A, who had a large amount of delinquency, hid more than 1 billion won in cash and checks in a travel bag. They were selected as malicious delinquents who simultaneously evade national and customs taxes while enjoying a luxurious life. The National Tax Service and the Customs Service shared information from each organization to increase search efficiency, and the success rate of this search reached 80%. The two agencies plan to continue joint response through information exchange in the future.