Electronic Tax Systems, Inc.™ is a privately held company in the Greater Philadelphia Area. Established in 2002, the company has developed new and innovative tax solutions, including the Exemption Management Suite™ and the TaxWizard™ product lines. ETSI has created solutions unique to various markets such as Telecommunications, Utilities, and general sales and use tax exemptions. ETSI also provides Telecommunications Tax Rating and System Integration and Implementation services for products of the major tax vendors in the marketplace today. Over half of ETSI's customers are in the Fortune 100.