The devils (and the taxes) are in the details, but it sounds to me as if you may possibly owe U.S. taxes on your worldwide income mostly paid from a foreign country other than Belize and that if you're actually working in Belize, regardless of where the money ends up, you may also owe Belize taxes and may need a Belize work permit. I would hie to your U.S. and Belize tax and legal advisors forthwith before you get squeezed by the tax authorities of both countries.
And I wouldn't discuss the matter on a public board in Belize, as the Belize tax guys are notorious for squeezing as they have so few people in Belize who actually pay tax, so they devote a lot of time to those that do.
Seriously, I'd get some professional tax advice pronto.
--Lan Sluder