I am using paypal for my payments, i wanted to include the tax thing w.r.t zip code. like when customer enters the zip code开发者_JS百科 i could get the sales tax percentage w.r.t that zip code. I bel
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A client needs the ability for their shopping cart to automatically retrieve and keep up to date sales tax tables for at least the US, and preferably all countries with which the US has tax treaties.