The digital payments multiplier Caribbean economists have been measuring for a decade is what makes a single tap at a Mandeville salon matter more than the sale at the salon would suggest. When the money stays regional, every Caribbean dollar gets spent two or three times before it leaves the region. When it does not — when the sale routes through an offshore processor or a card scheme that pulls margin to a foreign bank — that multiplier collapses. This article walks through the math, the geography of where Caribbean money goes when you pay one way versus another, and what you can do about it on a Tuesday afternoon.
The digital payments multiplier: Caribbean economics, simplified
A multiplier is the number that captures how many times a single dollar circulates through a region before leaving it. If you spend a dollar at a salon, the salon owner spends some of it on supplies, the supplier spends some on rent, the landlord spends some at the grocery, the grocer spends some on a wholesaler, and so on. Each round of spending captures some of the dollar; some leaves the region as imports, savings transferred abroad, or processor fees routed offshore.
The IMF's regional multiplier estimate for Caribbean consumer spending varies by sub-region but averages around 2.3 for purely-regional transactions. That means a dollar spent at a local salon contributes about two dollars and thirty cents of economic activity to the region before leaving.
The same dollar spent through an offshore processor, paying a foreign merchant who has no regional supply chain, has a multiplier closer to 1.1. The dollar leaves the region almost immediately. The difference — 2.3 versus 1.1 — is the entire developmental-economics argument for keeping payment rails regional.
Digital payments multiplier Caribbean: where the money actually goes
Trace a card payment at a Kingston shop. Three layers of money flow:
Layer one: the merchant gets paid. The shop receives the dollar minus the processing fee. The fee — typically 1.5% to 3.5% — goes to the acquirer, the card network, and the issuing bank. Of those three, the acquirer and the card network are usually offshore; the issuing bank is sometimes regional, sometimes not.
Layer two: the merchant spends. The shop owner pays staff, restocks inventory, pays rent. Most of this spending is regional unless inventory is imported. The regional fraction of layer-two spending is roughly 60-75% for service businesses, 30-50% for goods retailers (because inventory is imported), and 80-95% for restaurants (because food is largely sourced regionally).
Layer three: the merchant's suppliers spend. This is where the regional multiplier really lives. Caribbean wholesalers, Caribbean property owners, Caribbean wage earners — each takes a slice of the original dollar and spends it again. Three or four rounds in, the dollar has either left the region (imports, foreign vacations, offshore investments) or stayed (rent, groceries, school fees, transport).
The faster the leak in layer one, the smaller the eventual multiplier. The fees that get routed offshore are the leak. Sentinel and other regional acquirers reduce that leak; international cards traditionally widen it.
The personal version
If you pay a tour driver in Ocho Rios with a USD-denominated international card, your hundred dollars converts to JMD, the driver gets paid less than he should because the processor took a margin, and the margin disappears to a foreign bank. The driver spends his slightly-smaller take on rent and gasoline; both flow regionally, but the size of the slice that recirculates is smaller because of the layer-one leak.
If you pay the same tour driver with your VendaVault, the rails are regional. The fee is smaller (the regional acquirer charges less than the foreign processor). The driver receives more of the original hundred. The driver's slice recirculates at the same regional multiplier, but the slice itself is larger.
The same hundred dollars, paid two different ways, results in different amounts of regional GDP impact. Not by a huge margin per transaction — maybe two or three dollars on a hundred-dollar sale. But across millions of transactions per year, the difference compounds.
What this is not
A claim that international cards are bad. International cards are useful; they let visitors pay you. The point is not that you should refuse them. The point is that if you have a choice — if a regional rail is available and works as well as the international one — the regional rail keeps more money circulating in the region. The cumulative effect is the GDP percentage points the IMF's regional working paper has been documenting.
What you can do on a Tuesday afternoon
Three things, none of them sacrificial:
- Pay regional merchants with regional rails when both options exist. If a Kingston shop accepts your VendaVault, choose it over the international card. The merchant gets more, the region keeps more.
- Choose Payment Partners over wire transfers for small cross-border sends. The regional remittance corridor has tightened in 2025; fees are lower and the rails are increasingly regional.
- Encourage your local shops to add tap-to-pay. Many small merchants are still card-only or cash-only because tap-capable readers seem expensive. The rentable terminal market has dropped costs; the conversation is worth having.
Open yours
If you have not set up your VendaVault yet, the digital payments multiplier Caribbean math above is the macro economic argument behind your micro choice. Three minutes at vault.vendapay.net/register, and your individual Tuesday spend starts contributing to the regional GDP picture in a way that the offshore card alternative does not. Open your VendaVault →