Passports are required to travel to Belize. US citizens must have and hold a passport to travel to Belize.
Immigration legislation is similar to that in the UK. It applies to non-British citizens or those without the right to abode in the UK. Irish and EU citizens are exempt from many provisions.
Tip! A Passport may get you to Belize, but don’t neglect to bring the right accessories, such as these Belize Electrical Adapters.
Belize Tax Law Thesis 