I have a store running off of Expresso Store and Expression Engine. Currently they only have Tax based off of the state I need to run my taxes based off of the zip code (for legal purposes). Expresso Store does not offer an out of the box solution for this and I was wondering if there was anyone who has figured this out or may be able to offer any assistance?
Thank you!
On
At the moment you would need to write your own extension to have tax based at the zipcode level. The easiest way would be to add a new table that has zipcodes and their respective tax rate. Then with the store_order_taxes ( https://exp-resso.com/docs/extension_hooks.html#tax_hooks ) hook build an extension that checks the customers zipcode and apply the correct tax rate for their address.
Apparently Google uses data from these folks -- they offer db- and web service-based lookups. The integration with Expresso is left as an exercise for the reader ;)