This module calculates Kansas Sales Tax for the Ubercart module. Kansas has destination-based sales tax, meaning that as a seller, you have to charge sales tax based on your shipping location rather than based on your store/business location, meaning that the tax rate is variable rather than being uniform over the entire state. For that reason, a simple sales tax setup in Ubercart will not work for Kansas.
In this module, tax is calculated based on the purchaser's shipping address (or billing address, for non-shippable purchases), and the tax rate is found via address lookup on the Kansas State Department of Revenue's web site, so that it always uses the most recent tax rate information.