Know what you owe, before you go. The Canadian Duty Calculator application helps returning Canadian residents calculate total taxes payable for alcohol/tobacco purchases made outside the county.Trying to calculate these taxes can seem like a daunting task. From sales taxes, excise duties, tariffs, and provincial mark-ups, calculating what you need to pay is extremely complex. Use this calculator as a guide to paying taxes and duties when returning to Canada.As an added bonus, users can track border wait times when traveling to the United States or to Canada. Canadian Duty Calculator