Dext automatically converts foreign currency values into your base currency using exchange rates provided by Fixer. The rate used is based on the date on the document, not the date it was uploaded.
This helps ensure that converted values reflect the exchange rate for the time the expense or invoice occurred.
How currency conversion works in Dext
Dext converts foreign currency amounts using exchange rates supplied by Fixer, a service that aggregates data from financial institutions and banks, including the European Central Bank.
When a document contains a foreign currency:
Dext reads the original currency and amount from the document.
The amount is converted into your base currency using the Fixer exchange rate for the document date.
Both values remain visible on the Item details page.
Important: The converted amount in Dext may differ from the amount on your bank statement. This can happen if your bank used a different exchange rate or applied additional fees.
How to change your base currency
You can change the base currency of your Dext account in the web app from your Business settings page.
To change the base currency:
Go to Business settings.
Select Business profile.
Open the Base currency dropdown.
Choose the currency you want to use.
Save your changes.
Important: Changing your base currency affects how new documents are converted going forward. Existing documents keep the currency values already recorded.
What happens if currency isn't detected during data extraction
When currency cannot be detected automatically during extraction, Dext uses the base currency set in your account.
This ensures the document still has a currency assigned even if the original currency cannot be read from the image.
Supported currencies
Fixer supports a wide range of global currencies for conversion.
For the full list, see the Fixer supported currencies list.