Important: The campaign currency currently only affects mono-currency campaigns. For multi-currency campaigns, it is stored for consistency and future enhancements, but it does not yet influence KPI display or reporting.
What is the Campaign Currency?
The Campaign Currency is used for:
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Displaying KPIs and reports
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Converting service costs
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Showing budgets and expenses across different platform pages
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Defining the currency of the Max Budget
⚠️ Once a campaign has been published, the currency cannot be modified to maintain data consistency. In other words, your campaign currency can only be modified when your campaign is in Draft status.
Make sure to choose the right currency before publishing.
What is a mono-currency campaign?
A campaign is considered mono-currency when all active (i.e. published) line items are set in the same currency — and that currency is the same as the campaign currency.
If your campaign:
- has several line items that are set in different currencies or,
- has several line items that are set in a unique currency that does not match the campaign currency,
Then your campaign is considered multi-currency. In this case, some platform features — like the display of KPIs — may become less accurate or unavailable.
Why does it matter?
When your campaign is considered mono-currency, the campaign currency is used to display KPIs, budgets, and reports consistently across the platform.
This ensures data clarity and avoids discrepancies that may arise from currency conversions.
⚠️ If your campaign includes published line items in multiple currencies, it will be considered multi-currency — and some platform features like KPI display in the Campaign Summary will no longer be available.
How does it work?
When you create a new campaign, the campaign currency field will be filled with the billing currency associated with your agency, by default. This field cannot be empty, so you will need to select a currency to proceed.
If you are creating a mono-currency campaign, we recommend aligning the campaign currency with your line items’ currency to ensure the best data visibility.
Please note: The campaign currency does not have to be the same as the billing currency.
If the two differ, an average monthly exchange rate — provided by the Banque de France — will be applied to convert all financial data from the campaign currency to the billing currency for invoicing purposes.
This ensures consistent and transparent reporting across currencies.
How to Edit the Campaign Currency?
You can change the Campaign Currency only if the campaign is still in Draft:
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Via the Campaign Lister: Click the Edit icon 📝, select a new currency, then click Next and Save Campaign.
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Via the Campaign Summary: Click the Edit Campaign icon next to the Share button in the header.
Additional rules to keep in mind:
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The field is mandatory: every campaign must have a campaign currency assigned.
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You can still have draft line items in a different currency than your campaign currency, but this might result in less optimal KPI display.
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If you change the campaign currency while having draft line items in other currencies, a confirmation modal will warn you. You’ll be encouraged to align the currencies of your draft line items to keep the campaign in mono-currency status — which ensures optimal KPI display and unified reporting.
How exchange rate affect the campaign budget ?
Line Item Creation
At Line Item creation, the agency defines a purchase currency used to respond to Bid Requests.
If the purchase currency is not EUR, the platform calculates an EUR-equivalent budget, updated as follows:
- On publication of the Line Item
- Daily at 8:00 AM UTC — the platform fetches the day's exchange rate via API (equivalent to 5:00 AM ET / UTC−5)
- The remaining EUR-equivalent budget is recalculated daily using the current rate
- This EUR equivalent is the reference amount the platform will not exceed
To view the remaining budget in EUR, open the campaign settings ⚙️ and convert to euros.
Bid Response Behavior
Hourly and daily spend caps are converted to EUR each day using the current day's exchange rate. The CPM is also converted using the same rate. The platform spends up to the hourly cap in EUR and the daily cap in EUR, within the total daily budget in EUR.
Spend Display
Campaign Summary banner (top)
The displayed spend corresponds to the sum of daily spend amounts in the Line Item's native currency (USD or EUR), without applying any additional conversion — exchange rate adjustments are already applied per day.
Media buying reporting table
Same logic: spend is displayed as the cumulative daily sum in the original currency. No additional rate is applied on top.
Spend stops as soon as the EUR-equivalent budget is reached.
Exchange Rate Fluctuation Risk
Scenario: If EUR significantly strengthens against USD between Day 1 and Day 2 (i.e., the Day 2 exchange rate produces a lower USD→EUR value than Day 1):
Consequence: The total budget, once reconverted to EUR on Day 2, may fall below what was already spent on Day 1. The remaining EUR-equivalent budget becomes zero or negative — and the campaign stops, even if unspent budget remains in the original currency (USD).
