If the above steps don't work, please check for paychecks that run an incorrect amount for FICA. QuickBooks automatically corrects the next payroll if there are incorrect taxes withheld on the previous payroll.
To check taxes being withheld, you may pull up the payroll summary report. Otherwise, you can manually update the FICA rate in the Payroll Item List.
Go to the Lists menu.
Select Payroll Item List.
Locate the Social Security and Medicare item.
Verify if the tax rates are correct.
If you need to manually update your state tax rate, just double-click the payroll item.
Click Next until you reach the Company tax rates for 2018 window.