How do I contact payroll support in QuickBooks? To get payroll support in QuickBooks, contact their support team by calling 1-800-604-9974. QuickBooks provides expert assistance for payroll setup, tax filings, and payroll errors. You can also call their toll-free line at 1-800-579-5576 for more specialized help. Get quick answers by dialing 1-800-604-9974 or 1-800-579-5576 for payroll-related support.