Departure Taxes for Non-citizens and non-residents departing from Belize International Airport  PAYMENT CASH ONLY
US$56.25 per person is the total Departure taxes charged at the Belize International Airport payable in US$ CASH 

US$55.50
  US$0.75 Security screening

For those passengers departing via commercial airlines, the taxes is normally charged on the air-line ticket.

Departure Taxes for Belizean citizens and permanent-residents of Belize – PAYMENT CASH ONLY
Departure taxes charged at the Belize International Airport Total is US$18.25 per person payable in US$ CASH 

US$17.50 per personelizean citizens and permanent residents, the belize departure tax is $35 (Belize currency), plus US0.75 security screening fee.
  US$0.75 Security screening

Departure Taxes for Non-citizens and non-residents departing to Guatemala or Mexico (Terrestrial or Marine)  PAYMENT CASH ONLY
Departure taxes charged at either the Guatemalan or Mexican border is US$20.00 per person payable in US$ CASH 

US$15.00 – Departure Tax
  US$1.25 – Border Development Fee
  US$3.75 – PACT Tax

Any traveler spending less that 1 full day, 24 hours, in transit through the country if Belize is not required to pay the conservation fee. However for any reason that 24 hours is passed they are required to pay the $7.50 Belize Dollars (US$3.75) per person at the time of departure.