I offer payroll services for small business of up to 15 employees. For businesses with greater than 15 employees, I highly recommend outsourcing payroll to a third-party payroll processing service (such as ADP or Ceridian) as they are able to provide a more cost-effective service once the workforce become large enough (if you do not already have an in-house payroll).
Please feel free to contact me regarding any of your accounting, bookkeeping or income tax needs.