About Us

MasterTax, LLC, is a developer of payroll tax software for employers and payroll tax service providers. The MasterTax suite of software products offers customized solutions to employers and third-party providers that schedule, pay, balance, and file complex, multi-jurisdictional payroll taxes. MasterTax serves customers ranging from small outsource providers and professional employer organizations to large multi-national companies, providing a fully integrated, fully compliant system that makes payroll tax processing quick, easy, and accurate.

MasterTax version 1.0 was released in 1997, and since its introduction, has been the fastest growing payroll tax software program in the industry. The software is continually enhanced and upgraded to ensure quality and compliance. Currently, MasterTax supports over 10,000 Federal, State, and Local taxes.

MasterTax, LLC is headquartered in Scottsdale, Arizona.