Cayman Currency & Credit Cards: What to Know
The Cayman Islands has its own dollar, and it is worth more than the US dollar. Here is how the exchange rate works, which currency to pay in, and how to use cards without losing money to hidden markups.
The short answer
- Cayman has its own currency (the Cayman Islands dollar, CI$ or KYD), and it is stronger than the US dollar, so a price in CI$ is 25 percent more in US dollars than the number looks.
- US dollars are accepted everywhere, but your change usually comes back in CI$.
- Your card's currency is decided for you, not chosen. A foreign card is billed in US dollars at the fixed retail rate (US$1.00 = CI$0.80); only a local Cayman card can be billed in CI$. A CI$ price lands on your card a quarter higher in USD.
- Visa, Mastercard, and these days American Express are all widely accepted (a few small businesses still prefer Visa or Mastercard).
The exchange rate, in plain terms
The Cayman Islands dollar is pegged to the US dollar and has been for decades, so the rate barely moves. The catch for visitors is that the Cayman dollar is the stronger of the two. The practical rates you will meet:
| Where | US$1.00 gets you | CI$1.00 is worth |
|---|---|---|
| Shops / cash (typical) | CI$0.80 | US$1.25 |
| Banks (buy/sell) | CI$0.82–0.84 | US$1.19–1.22 |
| CIMA regulatory rate | CI$0.82 | US$1.22 |
The mental-math trap. Because CI$ is worth more, a Cayman price looks cheaper than it is. At the retail rate you will actually pay, CI$100 is US$125. The quick conversion: multiply any CI$ price by 1.25 to get the US dollar cost (the fixed US$1.00 = CI$0.80 retail rate). Most menus and displays are in CI$; only some hotels show US dollars first. If a price is not clearly labelled, check which currency it is before you judge it.
Which currency am I actually charged in?
Cash. US dollars are taken everywhere, but most menus, shelves, and displays are priced in CI$, and change comes back in CI$, so you will accumulate local cash. USD-first pricing is the exception, mostly at some hotels, rather than the rule. If a price is not clearly labelled, check whether it is CI$ or US$ before you judge it.
Card. Here your card decides the currency, not you (full detail in the next section). A foreign card is billed in US dollars; only a local Cayman card can be billed in CI$.
How paying by card works here
Cayman is unusual: your card decides the billing currency, not a prompt on the terminal, and as a visitor you generally do not get a choice.
- Foreign cards (US, UK, Canadian, and so on) are charged in US dollars. The terminal converts the Cayman-dollar price to USD at the fixed retail rate of US$1.00 = CI$0.80 at the moment of sale, so a CI$100 charge shows up as US$125.
- Only a local Cayman bank card can be charged in Cayman dollars. A few terminals will let a foreign card pay in CI$, but that is the rare exception, not the rule.
This is why the usual travel advice to "always pay in the local currency and decline conversion" does not really apply here: as a visitor you will almost always pay in USD at the fixed 0.80 rate, with no home-currency option to decline. The upside is predictability, the rate does not jump around. Just budget a CI$ price at CI$1 = US$1.25 on your card.
Acceptance. Visa and Mastercard are taken almost everywhere, including airport-rank taxis if you ask first. American Express is now widely accepted too; its acceptance broadened after its merchant fees moved closer to Visa and Mastercard's, so the old "Amex won't work here" caution no longer really holds, though a few small businesses still prefer Visa or Mastercard. Contactless is widely supported.
Fees. Because the charge reaches your card already in US dollars (converted at the fixed 0.80 rate before it is entered into the terminal), there is no currency-conversion markup from the card network. But Cayman is still outside your home country, so many cards add a foreign-transaction fee (typically 0 to 3 percent) on any international purchase regardless of currency, which can apply even to US cardholders. A card with no foreign-transaction fee avoids this. If your home currency is not US dollars, your bank also converts the US-dollar charge into your own currency at its own rate.
Cash and ATMs
ATMs are common in George Town, Camana Bay, Seven Mile Beach, and at the airport. Many dispense both CI$ and US$ (you choose); some give only CI$. Your home bank's foreign-ATM and conversion fees apply, so larger, less frequent withdrawals usually cost less in fees than several small ones. If a machine offers DCC on the withdrawal, decline it, just as with card payments.
You rarely need to exchange money before arriving: US dollars work on day one, and you will pick up CI$ as change. If you want CI$ cash, a bank or ATM on the island gives a better rate than an airport exchange desk back home.
Bring clean US bills. Worn, torn, taped, or heavily marked US notes can be a problem here. Some businesses and taxis will refuse a bill that is ripped or badly damaged, and banks vary in how strict they are about accepting damaged foreign currency for deposit, so a note one bank waves through, another may turn away. Carry newer, undamaged bills where you can, and keep a card as a backup.
Before you leave: spend down your Cayman dollars or change them back to US dollars at a bank. CI$ is hard to exchange outside the islands and fetches a poor rate if at all.
Frequently asked questions
Do they accept US dollars in the Cayman Islands?
Yes, everywhere. US dollars are accepted right across the islands: hotels, restaurants, shops, taxis, and tours. You will usually get your change back in Cayman Islands dollars (CI$), so expect to leave with some local cash.
What is the Cayman dollar worth in US dollars?
The Cayman Islands dollar is pegged to the US dollar and is the stronger of the two. In practice US$1.00 gets you CI$0.80 in cash at shops and CI$0.82 to CI$0.84 at a bank; put the other way, CI$1.00 is worth US$1.25 at the retail rate you will pay. A quick rule: multiply any CI$ price by 1.25 to get the US dollar cost.
Should I pay in US dollars or Cayman dollars on my card?
Usually you do not get to choose. In the Cayman Islands a foreign card is billed in US dollars, converted from the Cayman-dollar price at the fixed retail rate of US$1.00 = CI$0.80 at the till; only a local Cayman card can be billed in CI$. So a CI$100 purchase reaches your card as US$125. The rate is fixed and predictable, and there is generally no 'pay in your home currency' prompt to decline.
Are credit cards widely accepted in Grand Cayman?
Visa and Mastercard are accepted almost everywhere, and American Express is now widely accepted too (its acceptance improved once its merchant rates moved closer to Visa and Mastercard's). A few small businesses still prefer Visa or Mastercard, so it is worth carrying one. Contactless (tap) is common. Watch your card's foreign-transaction fee, typically 0 to 3 percent depending on the card.
Can I exchange Cayman dollars back home?
Generally no. Cayman Islands dollars are hard to exchange outside the islands and you will get a poor rate if you can at all. Spend down your CI$ cash before you leave, or change it back to US dollars at a bank before departure.
Do US bills need to be in good condition in the Cayman Islands?
It helps. Worn, torn, taped, or heavily marked US notes are sometimes refused by shops and taxis, and banks differ in how strict they are about accepting damaged foreign currency for deposit, so a note one bank accepts another may turn away. Bring newer, undamaged bills where you can, and keep a card as a backup.
Methodology and sources
The Cayman Islands dollar is issued by the Cayman Islands Monetary Authority (CIMA, cima.ky), which uses US$1.00 = CI$0.82 as its regulatory conversion rate. In everyday use, card terminals bill foreign cards in US dollars at the fixed retail rate of US$1.00 = CI$0.80, converted at the point of sale, and only local Cayman cards can be billed in CI$ (based on local merchant and banking practice). Cash exchanged at a bank is CI$0.82 to CI$0.84; card foreign-transaction fees are set by your card issuer. Rates are stable because of the long-standing US-dollar peg, but confirm the exact rate with your bank or the merchant. This is general information, not financial advice. Last updated: 28 July 2026.