FREE TAX PREP is a free tax preparation and e-filing service for households that earned $66,000 or less in 2017. In partnership with the IRS, IRS-certified volunteers are ready to help you with your taxes at four locations in Williamson County. We will only prepare 2017 tax returns. If you need an amendment or prior years prepared, please call (615) 830-7940. If you have any questions or wish to talk to someone to make an appointment at one of the sites listed, please call (615) 830-7940. For other sites in surrounding counties, please call 2-1-1 for information.