You pay this amount and you withhold the same amount from your employee's pay. So you will be sending a check to the IRS for a combined 15.3 percent. Health insurance and other benefits. Add these to the cost. If you are collecting premiums from the employees, you will have to deduct their share from their paychecks.
Workers comp and unemployment insurance.
These are costs that you are required to pay, depending on how the programs work in your state. Those are the main items, and they add up. In addition, you are required to withhold income tax for all your employees. Your employee will fill out a Form W-4 to give you information that will enable you to compute the amount of the withholding. The IRS is gets very, very annoyed if you don't do this.