WooCommerce makes tax setup simple. Follow these steps:

1. Enable Taxes: Go to WooCommerce → Settings → General, check Enable tax rates and calculations, then save.
2. Configure Tax Rates: Click the new Tax tab that appears, then choose Standard rates, Reduced rate, or Zero rate.
3. Add Rates: Click Insert Row, then enter the country code, state, ZIP code, rate (e.g., 7.5 for 7.5%), and name (e.g., "Sales Tax").
4. Set Display Options: Under Tax Options, choose whether to display prices with or without tax.
5. Save Changes.

???? Tip: For automatic tax calculations, use the WooCommerce Tax extension.