This osCommerce module calculates Sales Tax using the cloud service called AvaTax Calc� from Avalara, Inc.
AvaTax Calc� is a web-based service that delivers instantaneous sales tax calculations using a centrally-managed, highly accurate calculation engine leveraging up-to-date sales tax rates, rules and jurisdictional boundaries.
There is no lower cost way to assure yourself of sales tax compliance!
A FREE development account can be obtained by calling Avalara, (206) 826-4900 and asking for osCommerce sales.