Liberty Tax Service is one of the leading tax preparation companies in the United States. Located in Heflin, Ala., the company specializes in computerized-income-tax preparation service, electronic filing and audit assistance. It also offers an array of services in consultation, electronic filing, audit assistance and free review of income tax returns. Operating from more than 3,500 offices, Liberty Tax Service provides basic income tax classes to educate people about the latest tax changes and every facet of individual income tax preparation.. Electronic Filing