ADP, Gusto, Patriot Software, Paychex Flex, and Quickbooks Payroll are the top payroll apps for small businesses given their rates, mobile app ratings, and numerous features. We also like ...

It starts with a monthly fee of $45 plus $4 per employee. Paychex Flex does not offer a free trial and its mobile app is not available to those on Go, the most basic plan. There is a monthly rate of ...