When using your Solflare Card for payments in currencies other than USD, a 1% foreign exchange (FX) fee applies to each transaction.
You may notice that when you try to manually calculate the fee, the result doesn’t match exactly 1%. This is expected and happens for a simple reason, currency exchange rates change constantly.
Here’s why small differences occur:
Exchange rates fluctuate every second. Major currencies are highly traded, and the rate applied at the moment of your payment may differ from the rate you find online.
Publicly listed rates are indicative. Sites like Google or XE.com use their own calculation methods and don’t reflect the exact rate used by payment networks like Mastercard.
Real-time processing. The final charge depends on the precise rate used by the card network when the transaction is processed.
For example, a $4.42 transaction might show a theoretical conversion of $4.43 on Mastercard’s official converter. The small difference reflects normal variations in real-time FX rates.
These minor discrepancies are part of how all card-based foreign transactions work and the 1% FX fee remains fixed and transparent across all non-USD payments.