Presently moving over from MIVA to MOM XL. Have been using a monthly updating service "module" for MIVA to make updates to the sales tax tables, based on zip code. States update their tax tables at different times throughout the year, so monthly is the only accurate way to stay current.

I cannot find anything to do this in MOM. Are there any larger companies out there using MOM, that collect sales tax for a couple dozen states? I know you can't be updating hundreds of zip codes with the latest rates, etc.

What service are you using and how are you uploading it into MOM?