This is very exciting.
Can you elaborate a little on "and tax rates updated quarterly".
We update our zip code data quarterly with changes. We also provide a list of the tax rates. However, we don't pre-install the tax rates because many state's rates depend on whether you sell product and/or servidce and have a TAT and/or GET. So we provide the links to your state and you have to determine your tax basis. You should consult a CPA to determine the correct rate to charge for your business.
Should be mentioned that this is USA only