Hello sheilap1,
It's nice to see you reaching out here. QuickBooks Online Payroll provides the option to add benefits, that will automatically calculate tax and ensure a positive outcome on the associated payroll forms. I'd be happy to provide more information, so you can accomplish your goals with confidence!
To get started, you'll need to set up the payroll item. and choose how it will be paid to the employee. For your reference, here's a valuable guide to assist with the process. Should you require additional assistance, I suggest speaking with an accounting professional. If you don't have an accountant, we can help you locate a ProAdvisor in your local area.
Feel free to touch base with us again, if you have any other questions. We would be glad to help!