Sales Tax Data Vendor
I purchase tables with frequent updates fron Tax Data Systems and import to tax by zip code for the states in which we have nexus. Unfortunately, Storefront is very weak, to put it nicely, on sales taxes and reporting, needing a few more fields added to the tax tables for accurate reporting by tax district code, state, county and city.
We've built an importer in admin to easily apply updates as received and the data is relatively inexpensive, depending upon the level of data you require.
Jim Buchanan
The Chute Doctor
chutedr.com
8.0.1.2 User