Caribbean interchange fees run materially higher than equivalent US merchant economics, and the gap has been one of the persistent quiet drags on regional small-business profitability for the past two decades. This piece walks through what interchange actually is, how the Caribbean numbers compare with US numbers, what drives the difference, and what regional acquiring is finally doing about it.
Interchange is the per-transaction fee paid by the merchant acquirer (the processor) to the card-issuing bank when a card transaction settles. The acquirer passes this cost to the merchant as part of the merchant fee. Interchange is set by the card networks (Visa, Mastercard, etc.) according to published schedules. It varies by card product type, transaction type (card-present versus card-not-present), and geographic region.
For US merchants, interchange is regulated for debit cards by the Durbin Amendment (capped around 0.05% plus $0.21 per transaction for regulated debit) and uncapped for credit cards but typically in the 1.5-2.5% range. For Caribbean merchants, interchange runs 2.0-3.5% across most card types with no regulatory cap.
What drives caribbean interchange fees higher
Three structural factors push regional interchange above US baselines.
The networks set Caribbean interchange tiers based on regional fraud rates, regional dispute volume, and regional issuer-side costs. All three are higher in the Caribbean than in the US on aggregate. The network position is that the higher interchange covers the higher network-side costs of operating in the region.
Caribbean issuer banks have less competitive pressure than US issuer banks. There are fewer of them. The market is more concentrated. The negotiating leverage that drives US interchange tiers competitive does not exist as strongly in the Caribbean issuer market. Caribbean interchange fees benefit Caribbean issuer banks more than US interchange benefits US issuer banks.
Cross-border transactions on Caribbean merchant terminals (US-issued cards being used at Caribbean merchants) trigger cross-border interchange rates that are higher than domestic US interchange. A typical Caribbean merchant processes 40-60% cross-border transactions from US, Canadian, and European tourists. That mix structurally pushes the average interchange the merchant pays higher than a comparable US merchant would experience.
What the actual numbers look like
A few representative comparisons.
A small Caribbean coffee shop processing $30,000 a month, mix of 60% local cards and 40% tourist cards, with a card-present transaction profile: all-in effective interchange is typically 2.4-2.8%.
A comparable small US coffee shop processing $30,000 a month, 95% domestic cards, card-present: all-in effective interchange is typically 1.7-2.0%.
A Caribbean restaurant processing $80,000 a month with significant tip-on-card volume, 50/50 local-tourist mix: all-in effective interchange is typically 2.6-3.1%.
A US restaurant of equivalent size and profile: 1.9-2.3%.
The gap is consistently 60-90 basis points across most merchant categories. For a Caribbean merchant doing $50,000 a month, the gap is $300-$450 a month, or $3,600-$5,400 a year. Across hundreds of thousands of regional small businesses, the cumulative cost difference is in the hundreds of millions of US dollars annually.
What regional acquiring is doing about caribbean interchange fees
Regional acquirers are addressing the gap on three fronts.
First, negotiating tier improvements with the card networks. Regional acquiring trade bodies have been pressing Visa and Mastercard for better Caribbean interchange tiers for several years. Some incremental progress on specific card products and transaction types has been made. The arc is slow.
Second, building alternative payment rails that bypass the card networks for specific transaction types. Local-rail payments (bank-to-bank direct transfers, mobile money, regional payment rails like CaribPay) carry meaningfully lower per-transaction costs than card networks. Caribbean acquirers are increasingly offering these as merchant-side alternatives, particularly for high-volume merchants whose interchange burden is most painful.
Third, processor-side fee structure innovation. Some regional acquirers are offering subscription-based pricing where merchants pay a flat monthly fee plus a much lower per-transaction fee instead of the typical interchange-plus pricing. For consistent-volume merchants, this can produce meaningful savings.
Where merchants should focus
Caribbean merchants who care about reducing their effective interchange should focus on three actionable items.
Audit the actual interchange-line on the monthly statement. Most Caribbean merchants do not know what their effective interchange rate is. The merchant agreement typically has the rate buried in dense fee-disclosure documentation. Knowing the actual number is the first step to reducing it.
Negotiate. Most Caribbean acquirers will reduce interchange-plus markups for merchants who ask, particularly merchants who have been on the platform for 12+ months with clean transaction history. The negotiation is rarely offered proactively. It happens when the merchant asks.
Consider alternative-rail acceptance for specific transaction types. A merchant with a significant share of B2B invoice payments might benefit from offering open banking payment-initiation alongside card payment. A merchant with significant cross-border tourist volume might benefit from accepting stablecoin payments. The right rail for any specific transaction can have interchange-equivalent costs 60-80% lower than the default card rail.
What the trajectory looks like
Caribbean interchange fees are not going to converge with US interchange fees in any short timeframe. The structural factors that push Caribbean rates higher are persistent. But the trajectory is meaningful.
Network-side tier improvements are gradually compressing the gap. Alternative-rail availability is reducing the share of transactions that have to flow through the highest-interchange paths. Processor competition is improving merchant-side pricing terms. The merchant who actively manages their interchange exposure today is paying meaningfully less than the same merchant would have paid five years ago, and the trend continues.
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The bottom line for Caribbean merchants
If you operate a Caribbean MSME and you have not actively negotiated your interchange or considered alternative-rail acceptance for specific transaction types, you are paying more interchange than you need to. Caribbean interchange fees are higher than US baselines structurally, but they are also higher than they need to be on a properly managed Caribbean merchant book. The difference between actively managed interchange and passive defaults is typically 30-60 basis points of merchant revenue, recoverable through normal merchant-side practices.