To access the Tax Settings screens, first be sure they’ve been enabled for your site.
- Go to: WooCommerce > Settings > General
- Select the checkbox to “Enable Taxes and Tax Calculations”
- Save changes.
Once you’ve enabled Tax Settings, go to: WooCommerce > Settings > Tax to begin configuring taxes. This tab is only visible if taxes are enabled.
For more details, visit this page in the WooCommerce documentation:
Hope this helps!