Aside from personal effects, visitors 18 years or older are permitted to bring 200 cigarettes or 50 cigars or 250g of tobacco plus 1.5L of wine or spirits into St Kitts and Nevis without paying duty.
Note that the importation and wearing of camouflage clothing is prohibited on both islands.
Visitors must have a passport valid for a minimum of six months from the date of entry into St Kitts and Nevis as well as a return ticket to their home country (although this is rarely checked). On arrival, you’ll be given an immigration and customs form to complete. Keep the stub handed back to you until you leave the country.
Generally not required by citizens of the US, Commonwealth countries and most EU countries for tourist visits under 90 days.