Trust us when we tell you that you don't want to do payroll by
yourself. There are lots of complications, and frequent changes to the rates
and rules. You will do far better to get a professional payroll service to do
it for you.
With a professional service, you will have a simple reporting
process where you give the company the hours worked by each person each week,
and they do all the rest. The costs are minimal compared with the grief it will
save you. There are lots of good payroll services to choose from. Ask your
bank for some recommendations, for starters.
You should also be very careful not to play games with your payroll
taxes. Don't pay them late, and don't use money allocated for payroll taxes for
other purposes. Expect big trouble if you violate this rule.