Depending on the applicable tax law, you may be required to present information about the tax rate and the value of the tax on the sales document.
1. Open the Invoice list in menu -> Taxes menu.
2. Check the Activate the option of printing tax on the invoice if you want to print tax on the invoice (or uncheck it).
If you want to enable printing the second tax rate on the invoice, select Specify the second tax rate on the invoice.
3. Set the Default tax name and Default tax percentage.
4. Save changes.
Result: Invoice with the tax printing option enabled.
Result: Invoice with the tax printing option disabled.