[upthesaukee]

Most jurisdictions, but not all, who have a sales tax will charge a sales tax on a vehicle from another jurisdiction when registering in that new state. What happens often is that if the new state (FL let's say) has a higher sales tax than the original state (say ME), they charge the difference in tax between the old state and the new.

When we moved from MA to NY, Saratoga County had a higher sales tax than MA, by about 2%, and when we registered our vehicles in NY, in addition to the standard registration fees, we also had to pay the difference in the two sales taxes. I believe it was based on the cost new of the vehicle, but can't remember. Too many acorns have fallen off the oak tree to remember that far back.