QB Issue Resolution:

The tax amounts come from the exemptions.  Click to edit your employee and go to the taxes section.  That is where you put S1 or M0 for single one, married zero.

Resolution for Issue 'Payroll if calculating taxes for one emplyee but not the other, what am i doing wrong' available: Yes (Solved).
Source: Intuit Community forum.

Payroll if calculating taxes for one emplyee but not the other, what am i doing wrong: 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.

Support for calculating taxes
Quickbooks Repair Pro will resolve it efficiently and affordably. Guaranteed resolution of your issue, or you pay nothing!

Error Recovery for calculating taxes [Canada]
E-Tech is the #1 Quickbooks data migration and Conversion service provider.

Get 50% off Quickbooks Online

Click Here for 50% off!

Additional Support Options: