Advertising in dollars: keep the actual historical conversion
The rate paid for currency changes the cost in dinars.

The rate paid for currency changes the cost in dinars.
Practical steps
- Record original amount and currency.
- Keep actual rate and date.
- Separate fees.
- Match spending to period and campaign.
Worked example
100 USD at an illustrative rate of 3.2 costs 320 TND before fees; at 3.4 it costs 340 TND.
Mistake to avoid
These figures are not an official rate or currency-purchasing recommendation.
Working checklist
Choose a clear period and keep a document or reference for each expense. Separate inventory purchases from the cost of units sold to prevent double deduction. Review product, delivery, return, advertising and other expenses and reconcile collected cash with orders. Missing costs make results provisional: complete the data before increasing advertising or inventory.
Common question
Use today’s rate for past spending?
Keep actual historical costs so past profit remains consistent.
Put it into practice
Create your store on Matjri, prepare the information needed for this guide and test the result as a customer on your phone before sharing the link. Edit photos, descriptions and options and manage orders from your store dashboard.
Sources and further reading
Editorial review: 11 October 2026. Calculations are illustrative; tools and fees may vary by account and supplier.