Sales Tax Based Upon Zip Code
Although we know it is not optimal, we have an e-commerce based customer who uses Zip Codes in their Magento site for calculation of sales tax (Avalara $$$ to high for now). So importing orders options are bring tax in as something other than tax or use zip codes and still risk rounding errors but preserve Sage Sales Tax reporting functionality.
We can pull rates used in Magento and load into Sage as Tax Codes and Schedules. I see a ZIP Cross Reference table that can be used to assign sales tax schedules by zip code, but in that case someone would have to setup all the schedules and then maintain the cross reference.. This would be much better for reporting purposes but nearly impossible to keep synchronized with the eCommerce site.
Currently we are planning on the zip code = schedule route, but thought better to ""ask the experts"" to see how others have dealt with this...