Understanding conversion fees for non-USD card transactions

Mercury charges a currency conversion fee of 3% on all Mercury business debit and IO transactions that are made in currencies other than USD. This includes non-USD ATM withdrawals.

How to view your conversion fees

You can view currency conversion fees on your Transactions page. Each fee appears as a separate line item linked to the original non-USD transaction.

To see the full details:

  1. Go to the Transactions page
  2. Select the original purchase or fee entry titled "Intl. Transaction fee"
  3. In the details panel, you’ll see:
    • The original transaction
    • The converted USD amount
    • The 3% conversion fee (shown as a linked transaction)


If you have multiple fee entries, selecting any one of them will show the associated purchase in the details panel.

Viewing totals

You can also view summaries of total fee spending:

Conversion fees, limits and IO Cashback 

Currency conversion fees charged on purchase will not impact individual card limits. They do however apply against your overall borrowable credit for your business. Fees do not factor into IO Cashback rewards. 

The Mercury Debit Cards are issued by Choice Financial Group, Column N.A., and Evolve Bank & Trust, Members FDIC, pursuant to licenses from Mastercard.

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