Embedded FX & Cross-Border Fees
Three related but distinct fee concepts often get conflated in card payments: FX spread, cross-border (international) transaction fees, and Dynamic Currency Conversion (DCC). Each applies under different conditions, each is calculated differently, and most importantly for a cardholder, each is often invisible, embedded into the final amount rather than itemized. This page untangles them, then covers how the platform model addresses each.
FX spread (currency conversion fee)
When a cardholder makes a purchase in a currency that differs from their card's base currency, the amount must be converted to the target currency. Card networks publish a daily reference exchange rate (sometimes called a wholesale or mid-market rate) for this purpose. The issuer (and other issuer parties) then applies a markup over this reference rate — commonly 1–3% — and that marked up rate is what determines the amount actually charged to the cardholder's account.
This markup is the FX spread, and for many issuers it's a significant, largely invisible revenue source: the cardholder sees a single converted amount on their statement, with no separate line item showing "conversion fee: $1.85" — it's baked into the net settlement amount itself.
Cross-border (international) transaction fees
Separately from any currency conversion, card networks charge an assessment fee. On international transactions, this may be called an international or cross-border service assessment fee or similar. This latter assessment amount is usually greater than the former, and may apply whenever the merchant's country differs from the card's issuing country, regardless of whether currency conversion occurs.
This means: a USD-denominated card used at a USD-pricing merchant located outside the card's issuing country can still incur a cross-border fee, even though no currency conversion happened at all. This fee and the FX spread are independent and either or both may apply to the same transaction.
How these stack
| Merchant country vs card's issuing country | Transaction currency vs card's base currency | Fees typically incurred |
|---|---|---|
| Same | Same | Neither — a standard domestic transaction |
| Same | Different | FX spread only |
| Different | Same | Cross-border assessment fee only |
| Different | Different | Both — cross-border assessment fee and FX spread |
Dynamic Currency Conversion (DCC)
DCC usually refers to merchant-side (not issuer-side) conversion, offered at the point of sale: the merchant's terminal asks whether the cardholder would you like to pay in the home currency instead, and if the cardholder accepts, the merchant's acquirer performs the conversion — at a rate the merchant or their DCC provider sets, which is frequently worse than the issuer's own conversion would be.
DCC is presented to the cardholder as a convenience but typically results in a worse economic outcome than declining it and letting the issuer perform the conversion — even accounting for the issuer's own FX spread. Cardholder education on this point is a common feature of well-designed card products.
The platform's built-in model
Dynamic spread, not a flat markup
Where traditional issuers apply a roughly flat 1–3% markup regardless of the specific currency pair or asset, the platform applies a dynamic spread — ranging from near-zero up to approximately ±1% — that varies based on the specific currency/asset pair, market volatility, and settlement speed required. For major currency pairs and stablecoins settling quickly, the spread can be close to zero; for exotic pairs, volatile assets, or scenarios requiring instant settlement, the spread widens to compensate for the additional risk and cost Axys takes on.
All-in pricing
For digital-asset conversions specifically, network/gas fees are embedded into the conversion rate rather than itemized separately. There's no separate "network fee" line item for the cardholder or Program to account for — the rate presented already reflects the full cost of the conversion.
Native multi-currency holding
The FX spread (in any of its forms) only applies at the point of conversion. Axys supports native holding of a wide range of currencies — including emerging-market currencies such as RON (Romanian Leu) and BRL (Brazilian Real) — without forcing conversion to a major currency first. For a cardholder whose card balance is denominated in their natural transaction currency, transactions in that currency incur no FX spread at all, because no conversion occurs.
This is the most effective "fee reduction" available: not a better rate, but no conversion in the first place.