As your business grow you will begin to hire employees.  When you do, its important that you be familiar with the payroll tax requirements at the State and Federal levels.  You have to pay employees a salary, withhold payroll taxes , file payroll reports and pay payroll taxes at the State and Federal levels. 

You can do this in-house utilizing a payroll software or you can outsource the function to an organization that specialize in providing outsourced payroll solutions. 

The links below can help you get educated on the subject and assist you in picking a solution.