An English Phrase for Asking at customs whether someone has anything to declare: "Do you have anything to declare?"

"Do you have anything to declare?" is the basic English expression used for asking at customs whether someone has anything to declare. It's very handy at airports and when traveling. To answer, you can say something like "No, nothing to declare.". You can keep the conversation going by reacting with something like "Thank you. Enjoy your stay.".