Here are the steps on how to charge a customer a tariff:
- In the CMS, select eCommerce - Freight Options
- Add an International Freight Option - just a name at this stage is fine
- Save, then continue to edit this new shipping option
- In the Sales Tax / Tariff / Duty box, select which "local tax approach": International
- Enter wording for the tariff, duty or sales tax
- Enter the export tax or tariff rate percentage
- And/or enter the export tax or tariff fee

The assumption for collecting the tax or tariff is that the merchant is required to collect and pay tax to the appropriate authority. It is the responsibility of the merchant to set and collect the accurate tax rate or tariff if this feature is used.