OnPay

Best Payroll Software for Small Businesses: Gusto, ADP, QuickBooks Payroll and More (2026)

I compare Gusto, QuickBooks Payroll, ADP RUN, Paychex Flex, Rippling and OnPay for US small businesses, with official pricing where it exists, contractor plans, tax penalty guarantees, mid-year switching and when payroll inside an ERP makes more sense.