Local surtaxes in Florida add to the base state sales tax rate of 6%, increasing the total sales tax rate. These surtaxes range from 0.5% to 1.5%, depending on the county. For example, Orange County's surtax of 0.5% results in a 6.5% total rate in Orlando, while Miami-Dade's 1% surtax leads to a 7% rate. This variation affects pricing and compliance, requiring businesses to apply the correct local rate based on the customer's location.