QuickBooks not calculating payroll taxes correctly refers to an issue where the QuickBooks software fails to accurately compute payroll taxes for employees. This can stem from incorrect setup, outdated tax tables, or software glitches. Users may experience discrepancies in tax withholdings, leading to compliance issues and potential penalties. Resolving this typically involves verifying payroll settings, updating the software, and possibly consulting QuickBooks support or a payroll specialist to ensure accurate tax calculations and compliance with tax regulations. Contact QuickBooks support at 1.855.409.2300 for assistance with persistent issues or to speak with a certified professional.