Florida has a 6% sales tax that applies to any aircraft sold and or delivered in Florida, unless exempted by law for certain sales. If sales tax was paid in another state, it is credited, so you only pay the net difference, if any! Counties might impose a discretionary sales surtax, limited to the first $5,000 of the purchase price (usually only .5% or so).
Part of this Florida sales tax is a "use" tax, which is due on aircraft purchased out of state and brought into Florida within 6 months after purchase. Generally, this is all combined into a one time tax. There is no yearly property tax, registration, or other fees.
The sale of equipment used to maintain or repair fixed wing aircraft and rotary wing aircraft is exempt from sales and use tax when the equipment:
*Includes replacement engines, parts, and/or equipment used to maintain or repair the aircraft.
*Is used on an aircraft with a maximum certified takeoff weight of 15,000 pounds or a rotary wing aircraft with a maximum certified takeoff weight of more than 10,300 pounds.
*Is installed on aircraft maintained or repaired in Florida.
This means that as a Cessna 150 owner I pay sales and use tax on parts and services, but I'd be exempt if I could afford a much bigger aircraft!

The exemption above was an incentive to large carriers and others to locate their repair facilities in Florida, which many have done near here at Cecil Field (closed Naval Air Station).