Paychex offers several advantages over other payroll providers: 1) As a national provider, Paychex offers a wide range of scalable outsourcing solutions from payroll to HR to benefits to meet the needs of companies of any size. 2) Paychex services provide efficient centralized integration of payroll and other HR data sharing tasks to avoid inefficient and expensive piecemeal management. 3) Paychex ensures employers meet all government-mandated payments and minimize the risk of penalties from over 400 annual tax law changes by handling many administrative functions.