International and Cross-Border Interchange in 2026

TL;DR

When a card issued outside the U.S. runs at a U.S. merchant, up to three costs stack on top of what a domestic card would cost: Visa's or Mastercard's international interchange rate, a network cross-border assessment billed to your acquirer, and a currency conversion fee if the sale is converted. Flat-rate processors fold all of that into one surcharge: Stripe, Square and PayPal each add 1.5 percent for international cards, and Stripe adds another 1 percent when currency conversion applies (prices checked Oct 2026). For example, a merchant with 10 percent international volume on $300,000 a month ($30,000) pays an extra $450 a month from a 1.5 percent surcharge, plus $300 if a 1 percent conversion fee applies to all of it. The fix is pricing structure, not vendor choice. Pull your statement, isolate the international line items, and check what your processor is keeping versus what is passing through to the network.

What this actually is

Two related network charges apply when a card crosses national borders during a transaction. Both replace or add to the standard domestic interchange that a U.S. merchant pays on a U.S. card.

The first is international interchange itself. Visa and Mastercard publish separate interchange rates for cards issued outside the U.S. and used at U.S. merchants. Visa lists them in section I, "International Transactions," of its Visa USA Interchange Reimbursement Fees schedule (rates effective Oct 24, 2026, checked Nov 2026). Mastercard publishes its own U.S. merchant interchange rates. We could not open Mastercard's current rate document, so this page quotes Visa's numbers only.

The second is a network-level assessment added on top of interchange. Visa calls its version the International Service Assessment (ISA). Mastercard calls its version a cross-border assessment. These fees go to the network itself, not the issuing bank. The networks bill them to acquirers through fee schedules that are not part of the public interchange tables, so we do not quote a percentage here. Ask your processor to show the exact rate it pays and passes on.

Your processor cannot waive these network fees, but it decides how they reach you. You see them either as separate line items on an interchange-plus (IC++) statement or buried inside a flat international surcharge on a flat-rate plan.

For any U.S. merchant with an e-commerce footprint, international cards are a cost line worth tracking on its own, because they are priced differently from domestic cards at every layer.

A transaction is treated as cross-border based on the card issuer's country, which the acquirer reads from the card's BIN (Bank Identification Number). Visa's schedule defines the international rates as applying to "Visa cards used at a U.S. merchant but issued outside the U.S." The cardholder's physical location and IP address do not set the interchange rate. The card issuer's country does.

International and cross-border interchange is the separate set of rates card networks apply when a card issued in one country runs at a merchant acquiring in another country.

How it works under the hood

The flow runs the same on every cross-border transaction. The mechanics determine which fees apply and at what rate:

1. Customer enters card data at checkout or terminal.
2. Acquirer reads the card's BIN, which encodes the issuing country.
3. Acquirer compares issuing country to merchant country.
4. If countries differ, the transaction is priced on the network's international interchange table.
5. The network applies the international rate for the card product (consumer, premium, commercial).
6. The network bills the acquirer its cross-border assessment (Visa ISA or Mastercard's cross-border assessment).
7. If the transaction is converted between currencies, a conversion fee can apply on top. Stripe, for example, publishes a 1 percent fee for conversion.

Visa publishes its international interchange rates in its public schedule. These are the rates in the Visa USA Interchange Reimbursement Fees document, effective Oct 24, 2026, for Visa cards issued outside the U.S. and used at a U.S. merchant:

• Product Base: 1.10 percent on Visa Classic, Gold and Electron; 1.85 percent on Visa Signature and Visa Premium; 1.98 percent on Visa Infinite; 2.00 percent on all Visa commercial products
• Alternative: 1.60 percent, 1.85 percent, 1.98 percent and 2.00 percent for the same four card groups
• Downgrade: 1.65 percent, 1.90 percent, 2.03 percent and 2.05 percent
• Interregional regulated debit (cards covered by the Federal Reserve's Regulation II): 0.05 percent + 21 cents, plus 1 cent for issuers that certify fraud-prevention compliance

None of the international credit rates carries a fixed per-transaction fee. Mastercard publishes its own international rates; check its current schedule for the equivalent numbers.

Compare these to domestic equivalents in the same Visa schedule. A basic domestic consumer credit card in retail (Product 2, All Other Products) runs 1.51 percent + 10 cents card present. A domestic Visa Signature Preferred card runs 2.10 percent + 10 cents, and Visa Infinite up to 2.30 percent + 10 cents. The international rate is not always higher than the domestic premium rate, but the cross-border assessment comes on top of it.

A Visa Signature card issued abroad carries 1.85 percent interchange before the network's cross-border assessment, any conversion fee and the processor's markup.

For example, a $1,000 sale on a foreign-issued Visa Signature card carries $18.50 in interchange (1.85 percent) before the network's cross-border assessment. A merchant on a flat plan of 2.9 percent + 30 cents with a 1.5 percent international surcharge pays $44.30 on that sale ($29.00 + $15.00 + $0.30). The processor keeps whatever that $44.30 does not spend on network costs.

If the cardholder is offered Dynamic Currency Conversion (DCC) at checkout, another layer enters. DCC lets the cardholder pay in their home currency at the point of sale. The conversion is done by the merchant's acquirer or a DCC provider at its own exchange rate, and some contracts share part of that revenue with the merchant. If you do not see DCC revenue itemized on your statement, ask who keeps it.

Where it goes wrong for operators

Six patterns burn operators repeatedly.

First: flat-rate international surcharges that do not track to actual cost. Stripe, Square and PayPal publish a flat additional 1.5 percent on international cards or international sales; Braintree adds 1 percent for non-U.S. cards and another 1 percent for non-USD currency (prices checked Oct 2026). The surcharge is the same whatever the card, while the network's international interchange and assessment vary by card product and currency. The merchant cannot see how much of the surcharge is network cost and how much is processor margin.

Second: FX conversion done at the processor level. When a merchant accepts EUR or GBP cards but settles in USD, someone converts the currency. Stripe publishes a 1 percent conversion fee on top of its international card fee. Other processors build the margin into the exchange rate itself, so it never shows up as a line item. On a $400 international transaction, a 1 percent conversion fee is $4.

Third: international cards that do not look international. Some corporate cards are issued through a company's foreign subsidiary. The card looks like a normal Visa or Mastercard to the cashier, but the BIN points to a foreign issuer. The transaction is priced at international rates without anyone at the merchant noticing.

Fourth: contract clauses that exempt international fees from the negotiated rate. A processor contract can quote a discount rate that covers domestic cards only and send international transactions to a separate fee schedule. Read the fee schedule for an "international," "cross-border" or "foreign card" line before you compare quotes.

Fifth: surcharge programs that do not account for international cards. Visa requires merchants to notify their acquirer 30 days before they begin surcharging, per Visa's merchant rules page. A surcharge may not exceed your cost of accepting the card, and under the pending Visa and Mastercard settlement it could not exceed the lower of 3 percent or that cost. Surcharging applies to credit cards only, and some states restrict or ban it. A flat surcharge set for domestic cards can under-recover on international cards and over-recover on cheaper cards, which is the side the rules do not allow.

Sixth: chargeback economics on international transactions. Dispute fees vary by processor: Stripe charges $15 per dispute plus $15 more to counter it (refunded if you win), PayPal $20 and Braintree $15 (prices checked Oct 2026). Check whether your contract prices international disputes differently before assuming your dispute economics match your domestic baseline.

Worked example with real numbers

This is a hypothetical merchant. The interchange rates are Visa's published rates effective Oct 24, 2026; the flat-rate plan and the IC++ markup are assumptions stated below. Network assessments are left out of the IC++ side because the networks do not publish them, so read the IC++ totals as "before network assessments."

The merchant profile: a B2B SaaS company selling enterprise software subscriptions. Monthly card volume of $450,000. Average ticket of $1,800. Twelve percent of volume comes from international customers, primarily UK, Germany, Australia and Singapore. We assume every sale is on a Visa purchasing or corporate card. Current processor: a flat-rate plan at 2.9 percent + 30 cents plus an additional 1.5 percent international surcharge.

Domestic volume runs at $396,000 per month, 220 transactions. Cost on the flat plan: 2.9 percent of that volume is $11,484, plus 30 cents across 220 transactions is $66, total $11,550 per month.

International volume runs at $54,000 per month, 30 transactions. Cost on the flat plan: 4.4 percent of $54,000 is $2,376, plus 30 cents across 30 transactions is $9, total $2,385 per month.

Total monthly processing on the flat plan: $13,935.

The same merchant on an IC++ contract at a hypothetical 0.20 percent + 8 cents markup:

Domestic interchange at Visa's Commercial Card Not Present rate: 2.70 percent + 10 cents, which is $10,692 plus $22. Processor markup: 0.20 percent + 8 cents, which is $792 plus $17.60. Total domestic before network assessments: $11,523.60. That is only $26.40 below the flat plan, and network assessments would erase it. On commercial cards at the standard rate, IC++ alone does not beat 2.9 percent + 30 cents.

International interchange at Visa's Product Base rate for commercial cards: 2.00 percent with no fixed fee, which is $1,080. Processor markup: 0.20 percent + 8 cents, which is $108 plus $2.40. Total international before the cross-border assessment: $1,190.40.

Total monthly processing on the IC++ contract before network assessments: $12,714.00, against $13,935 on the flat plan. The gap of $1,221 a month is the most this merchant could save; network assessments come out of it.

The international slice is where the difference sits. It went from $2,385 to $1,190.40 before the cross-border assessment, a gap of $1,194.60 a month. Even if the network's cross-border assessment and other network fees took as much as the 1.5 percent the flat plan charges ($810 a month), the merchant would still keep $384.60 a month on that slice. The real number depends on the assessment rate your processor shows you.

Now consider the same merchant if half of the international volume is converted from a foreign currency. With a 1 percent conversion fee like Stripe's, 50 percent of $54,000 is $27,000, and 1 percent of that is $270 extra per month, $3,240 per year. Billing in the cardholder's currency, or negotiating the conversion fee into the contract, recovers most of that.

Operator playbook

A numbered list of actions to run this week:

1. Download your last three statements and pull every transaction over $200. For each, look up the BIN (free BIN lookup tools exist) and tag non-U.S. issuers. Total the volume to know your international percentage.
2. The higher your international percentage, the more the negotiation lever matters. On a flat plan, every international dollar carries the full surcharge, so even a modest share adds up.
3. Request a quote on IC++ pricing from at least two competing processors. Specify that international fees must be broken out as international interchange, network cross-border assessment and processor markup separately on every statement. Our guide to acquirer selection for international sales covers what to ask.
4. Ask the processor to pass through the network's cross-border assessment at cost instead of a blended international surcharge, and to show you the rate in writing. If they refuse, you are paying margin instead of cost.
5. Check the FX conversion rate. If your statement shows a USD amount for a EUR charge, divide to derive the exchange rate and compare it with the card network's published rate for that day. The spread, plus any separate conversion fee, is what you pay for conversion.
6. If you are a B2B merchant accepting recurring international subscriptions, consider charging in the cardholder's local currency where feasible. Charging EUR directly to a EUR card removes the conversion step and any conversion fee, such as Stripe's 1 percent.
7. Audit any Dynamic Currency Conversion on your terminals or checkout. If your processor offers DCC and the revenue split is not visible on your statement, ask for it. Turn it off or renegotiate the split.
8. Add international pricing to your contract review checklist. The right clause commits the processor to pass-through pricing on international transactions for the contract term, with statement review rights.