The funds are often used to boost infrastructure, marketing activities or regeneration projects.
St Lucia is the most recent destination to announce a tourism levy to fund destination marketing and development.
Its "tourist accommodation fee" will affect hotels, guesthouses, villas, apartments and Airbnb stays.
From 1 April 2020, visitors will be charged a nightly rate of $3 on properties costing up to $120 a night, and $6 on anything beyond $120.
