Running into an issue in figuring out best practices concerning accurate calculation of sales tax for a store based in New York State.
NYS calculates tax based on what county the item is being received in. It cannot be based on zip code because some zips run into 2 counties. Then to complicate things further there are some cities within counties that trump the tax rate of the county.
I have researched the forums and found LadyHLG's Local Sales Tax Mod which looks promising but is based on zip: http://tinyurl.com/289yuy
I have seen some other threads about interesting ways people are handling this but no 'holy grail' for those of us trying to accurately calculate sales tax based on county.
Does anyone know of a 'best-practice' for NYS or other 'county/city' tax calculation environments for ZC?
Any knowledge or experience would be greatly appreciated.