Zuora Tax
With our taxation module, you can apply tax rates for addresses with matching performed at any level from country, state, county, city, zip, or a string value for the tax region. Additionally, Zuora Billing allows you to apply up to three independent taxes to a single charge, and each tax can have a type of Flat Fee or Percentage.
Currently, Zuora does not support calculating taxes for negative charges if the tax type is Flat Fee.