Regulators Just Quantified the FX Markup You've Been Eating Blind

Compaytence Brief · July 24, 2026

Selling to a customer overseas costs roughly 15 times more in card network fees than selling to one down the street, and until this year, nobody had actually put a number on that difference. In March 2026, the Reserve Bank of Australia finally did: cross-border acquiring fees ran 158.2 basis points of transaction value, against 10.5 basis points on domestic sales. Acquirers pass that cost straight through to merchants, so it's ultimately your fee, not theirs.

The scale is what makes the finding land. Cross-border sales are a fraction of total card volume, yet Australian acquirers collected AUD $514.2 million from merchants in cross-border scheme fees against AUD $992.1 million domestically, more than half as much pulled from a small slice of transactions as from the entire domestic base combined. On those cross-border sales specifically, scheme fees alone consumed 58% of the total merchant service fee charged.

Merchants are only now getting visibility into that cost, and only in Australia. Before this, it was folded into settlement and absorbed. Now it's a required line item.

The RBA is requiring the card networks operating in Australia, including Visa and Mastercard, to publish "Scheme Fee Roadmaps" by April 1, 2027, so merchants there can actually see this breakdown. That's one country and one regulator. No other market has an equivalent rule on the books yet, and the markup itself isn't limited to Australia or to card scheme fees. It's sitting in your settlements right now, whether or not anyone's required to show it to you yet.

The fee you can see, and the one you can't

International sales carry two distinct costs that get bundled into what looks like a single fee on your statement.

• Cross-border scheme fee. The charge the RBA measured: Visa, Mastercard, or another network billing extra whenever the cardholder's issuing country differs from the merchant's country, regardless of currency. Disclosed, if you know where to look for it.

• Currency conversion markup. A separate charge added by whichever bank or processor executes the conversion when a sale in one currency settles into another, on top of the wholesale interbank rate, commonly 1% to 4% depending on the provider. There's no line item for it. It just means fewer dollars land in your account than the day's actual mid-market exchange rate would have paid out.

Run an international sale through both layers and they compound. A cross-border scheme fee plus a currency conversion markup, on the same transaction, is routine, not exceptional.

The dollar math

On a $100 conversion, the gap looks like pocket change. Run it through a traditional bank margin plus a standard conversion fee and you can lose more than $11 combined. Run the same $100 through a multi-currency account priced closer to the interbank rate, and the loss drops under a dollar.

Scale that same gap to $1,000,000 in annual international sales, at an ordinary 3% markup, and $30,000 simply never arrives. It doesn't show up as an expense. It just isn't there when settlement lands.

That's not a worst-case number. It's the routine cost of letting whichever bank sits behind your processor handle the conversion by default. And it scales linearly with growth, which is what makes it dangerous: a brand doing $200,000 a year in international sales is quietly losing $6,000 to a 3% markup. The same brand at $2,000,000 is losing $60,000, on the exact same rate, without a single decision being made differently. Nobody signs off on that number. It just accumulates.

Why it persists

Domestic interchange has been under regulatory pressure for years, capped in the EU, scrutinized by the Fed and by settlements like the ongoing Visa/Mastercard swipe fee cases in the U.S. Cross-border currency conversion has faced almost none of that pressure, which is exactly why it took a central bank publishing a formal report to make the size of the gap visible at all. Checking what conversion rate you actually received against the market rate on the day of sale isn't built into standard settlement reporting, and processors have little incentive to add it.

How to actually check this

The audit here doesn't require new software. Pull a recent settlement statement for an international sale, find the exchange rate that was applied, and compare it against the published mid-market rate for that same date. A gap under half a percent is normal. A gap above one or two percent is margin someone is quietly keeping. Multiply that gap by your monthly international volume and you have the real number, not the theoretical one.

What to do about it

Two structural fixes address this. Multi-currency business accounts, like Airwallex, let you collect and hold foreign sales in their original currency instead of forcing an automatic conversion at whatever rate the bank sets that day, so you control when and how a conversion happens rather than absorbing whatever margin gets applied by default. Local acquiring, matching the processing region to the cardholder's bank region instead of routing every international sale back through a single home-country account, addresses the cross-border scheme fee side of the equation directly, and it's part of what a U.S. entity and banking setup is built to support for international operators.

Either fix starts with the same audit: know your actual rate before you decide whether it's worth changing. We work directly with Airwallex to get merchants set up on accounts like this. If you want a real read on what your international sales are actually costing you, that's an audit we can run together.

Sources: Reserve Bank of Australia, "Review of Retail Payments Regulation, Phase 3 Conclusions Paper" (March 2026); Airwallex, "What Are Cross-Border Fees and How to Avoid Them."