Originally Answered: When an airport customs official asks, Do you have anything to declare?, what exactly do they mean? They are giving you a last chance to tell them about anything that you might have to pay duty on, or to enquire about the status of items which might be dutiable or illegal.

Airports and customs agencies ask if you have "anything to declare" to enforce national security, public health, and economic laws. By declaring items, you are legally notifying the government of goods that may be subject to taxes (duties) or that could pose a biological threat. For example, fresh fruits, meats, or soil can carry invasive pests or diseases like Foot-and-Mouth disease that could devastate a country’s agriculture. Customs also tracks the movement of large amounts of currency (typically over $10,000) to prevent money laundering and the funding of illegal activities. If you fail to declare an item and it is found during an inspection, you face severe consequences, including hefty fines, the permanent confiscation of the goods, and even the loss of "trusted traveler" status like Global Entry. Declaring items honestly ensures that you are compliant with the law, even if it results in a small tax or the disposal of a prohibited snack.