ADP TotalSource vs. Paychex

ADP TotalSource is a Certified Professional Employer Organization (CPEO) that helps businesses manage HR, payroll, benefits, compliance and talent management through a single solution. As an IRS-certified CPEO and ESAC-accredited PEO, ADP TotalSource combines technology with hands-on HR expertise to help organizations navigate the complexities of managing employees. Businesses can streamline processes across the employee lifecycle, from hiring and onboarding to payroll, benefits administration, performance management and workforce planning.

Paychex Flex® is an all-in-one HR platform built to help businesses hire, pay, manage, and retain employees all from a single interface. Designed to grow alongside your organization, Paychex Flex combines intelligent technology with flexible support to simplify the full scope of human resource management. At the core of the platform is a connected suite of payroll, HR, benefits, and workforce management tools. Paychex Flex automates routine administrative tasks from payroll processing and tax management to benefits enrollment and scheduling.