QB Issue Resolution:

However, payroll taxes are treated differently in a cash basis system. Payroll taxes count as deductible expenses for the year that the wages are paid. This means that payroll taxes are deductible this year for any pay date this year—even if you remit the taxes next January. Consequently, payroll taxes paid in January relating to pay dates in the prior year should not be recorded as next year’s expenses. They are expenses for the prior year.

Full article see link below.

https://www.activefilings.com/business-taxation/accurate-payroll-procedures/

Resolution for Issue 'Company payroll taxes posting to P&L before being paid.' available: Yes (Solved).
Source: Intuit Community forum.

Company payroll taxes posting to P&L before being paid.: this issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the issue yourself by looking for a resolution described below. If it is a complex issue or you are unable to solve the issue, you may contact us by clicking here or by using other support options.

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