QB Issue Resolution:
To turn on the Sales Tax, click the Taxes on the left navigation bar.
Select Sales Taxes and on the right side, click on Edit Sales Tax Settings.
Resolution for Issue 'How do I turn on Sales Tax?' available: Yes (Solved).
Source: Intuit Community forum.
How do I turn on Sales Tax?: 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 Sales TaxQuickbooks Repair Pro will resolve it efficiently and affordably. Guaranteed resolution of your issue, or you pay nothing!
Error Recovery for Sales Tax [Canada]
E-Tech is the #1 Quickbooks data migration and Conversion service provider.
Additional Support Options: