If your new small business has employees, activate your payroll service in your QuickBooks desktop software.
If you bought QuickBooks online, you have received an activation key. If you bought it in a store, you need to go to the service’s site to get the activation key.
Once you have the activation key, in your QuickBooks account, go to Employees, then click Payroll and click Install Payroll. You will then be asked to complete the licence and information page as well as the legal information section. You need to read and accept a disclaimer; once that is done, you will be able to use the payroll functions by clicking Start Payroll.