Although many States have differing sales tax formats and some allow for counties and cities to charge an additional amount, I have found that States are allowing the POS to be the business location.

With all the brick-and-mortar businesses around and the limited number of Sales Tax Commissioners/Collectors/Enforcers States typically do not have the resources to ensure home-based businesses tax based upon established standards.

I commend you on your desires to meet the State requirements, but you will never be able to keep up with the changes. The Postal Service doesn't inform people of new Zip Codes when they are added and Zip Codes can cross county/city lines.

Until the States can provide an XML feed for Sales Tax, I would base my sales tax rates on my area.

Note: I am not a lawyer nor do I work for the Florida Department of Tax Collections.

I hope this helps.

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Lee Roberts