You also need to pay payroll related tax. My accountant does tha

The pay stub will including all the tax and the employee getting the amount after those tax, it is around 15-20% more that what your employee get based on your company structure. I guess it is around 15% for LLC. However, you need to report to the IRS for employee pre-hold tax otherwise you will get fine later.
So it is better to ask a professional or sign up those service normally should be around $10-20/mth.