A Quick Look at Paychex's Revenue Sources
Paychex reported $3.4 billion in Total Revenues in Fiscal 2018. This included 2 revenue streams:
Payroll Service Revenue: $3.3 billion in FY2018 (98% of Total Revenues). This includes Paychex's traditional payroll processing and PEO services.
Interest on Client Funds: <$100 million in FY2018 (2% of Total Revenues). This represents the interest Paychex earns between pay periods on funds received from clients