The stories I have heard from friends who own condos down there is that a Canadian or other non-resident, in some jurisdictions, can expect to pay 8-20 times the tax rate of resident Floridians. There is no shortage of people who want to live in Florida, and the various towns/counties etc would rather have people who live there 12 months a year, work and pay taxes and spend money etc, than part-timers. So, they either discourage part-timers, or soak money from people who are paying into a second home, which can be considered a luxury.