Hi there, outercircleinc.
With Payroll for QuickBooks Online, federal and state payroll taxes are instantly calculated. Conveniently you can set up and pay federal and select state taxes electronically with E-Pay. Though, some agencies require you to enroll before you start using E-Pay. To learn more the latest payroll updates in QuickBooks, please visit this link: Payroll 101.
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Let me know if there's anything else that I can help with your account. I'm always here to assist. Have a great rest of the day!