Abstract: A facility for accurately computing taxes is described. In various embodiments, the facility receives configuration information, receiving a set of tax-related information, storing the received the tax-related information, and employs the stored tax-related information to calculate taxes for a transaction. In various embodiments, a system calculates taxes. The system comprises an administration component that stores administrative information relating to jurisdictions in which a business operates, a tax data component that stores at least tax rates relating to the jurisdictions in which the business operates, and a tax law library component that stores tax rules associated with the jurisdictions in which the business operates and indicates which of the tax rates to apply for a transaction.

Abstract: A facility for accurately computing taxes is described. In various embodiments, the facility requests transaction information from a universal connector, requests a tax service provider to calculate taxes based on the transaction information, and reports the calculated taxes. In various embodiments, the facility additionally receives business practice change information and requests the tax service provider to calculate taxes based on the business practice change information.