A declined card on the Cambodia eVisa checkout is almost never about the card itself — it is a US bank fraud hold on a first-time Cambodia charge. Here is the fix order that clears 9 declines out of 10 in under five minutes.

Your US bank flagged the Cambodia eVisa charge as suspicious and blocked it before it reached the checkout — that is the cause in roughly nine out of ten American declines. The fix is fast: check your phone for a fraud alert text or app notification from your bank, reply to approve it, then retry the payment once. If there is no alert, the next most likely cause is a billing-address mismatch, so confirm the ZIP code and street number match your card statement exactly. Do not retry more than two or three times in a row — repeated attempts trigger a velocity block and can leave temporary authorization holds. If raw card entry keeps failing, switch to PayPal, Apple Pay, or Google Pay, which usually clears straight through.
You filled in the form, uploaded the photo, reached the payment step, typed in a card you use every day at home — and the screen bounced back with a decline. Before you reach for a second card or assume the site is broken, take a breath. In nine out of ten American declines on the Cambodia eVisa, the card is perfectly fine. Your US bank stopped the charge, not the checkout.
Here is what actually happened in that half-second. Your bank saw an online charge to a payment processor it associates with Cambodia, on a card that has probably never been used for anything in Southeast Asia, for an amount it has no history for. Modern fraud engines are tuned to be twitchy about exactly that pattern — an unfamiliar foreign merchant, a first-time category, a card-not-present transaction. So the bank does the cautious thing and blocks it, then fires off a fraud alert to your phone asking, in effect, "was this you?"
The good news is that this is the easiest payment problem to fix, and it almost never costs you the application. This guide ranks the real decline causes in the order they actually happen, gives you the exact fix for each, and tells you when to stop retrying and switch methods instead. If you want the full list of what the checkout accepts first, our Cambodia eVisa payment methods for Americans guide lays out every card and wallet. When you are ready to try again, you can head straight back to apply.
Card declines are not random. After thousands of US payments, the same five causes show up in roughly the same order every time. Work through them top to bottom and you will solve the overwhelming majority before you ever pick up the phone.
Number one, by a wide margin, is a bank fraud hold. Your card issuer blocked the charge as a precaution because it looked unfamiliar. You will usually get a text, push notification, or email within seconds asking you to confirm the transaction — approve it, then retry. This single cause accounts for most American declines on its own, and our note on bank fraud holds and how to clear them walks through it bank by bank.
Number two is an address mismatch, known as an AVS failure. US checkouts verify the billing ZIP and street number against what your bank has on file. If you recently moved, if you typed your travel or hotel address by reflex, or if your card statement still shows an old address, the charge is declined even though the card has plenty of room. The fix is to enter the billing address exactly as it appears on your card statement — not where you are staying, not your work address.
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The Cambodia e-Arrival Card is a separate step from your eVisa, and a small one — $5 USD verified through us, 14 fields, filed within 7 days before you fly. Here is exactly what that fee covers, why it is not bundled into your visa price, and the timing that keeps you moving at the gate.
The Cambodia e-Arrival Card is 14 fields across three sections, filed within 7 days before you land. Here is exactly what each field wants, in the order the form asks for it, plus the date-format slip that flags US travelers at the kiosk.
The Cambodia e-Arrival Card asks for 14 pieces of information across three sections — your identity, your flight and stay, and a short customs declaration. Here is exactly what each field wants and the four things to have in front of you before you start.
Number three is a 3-D Secure or one-time-passcode step that quietly failed. Many US cards now bounce you to a Verified by Visa or Mastercard SecureCode screen, or send a six-digit code by text that you have to enter to finish the charge. If that pop-up was blocked, timed out, or you missed the code, the payment reads as a decline. Turn off any pop-up blocker, watch for the code, and complete the step.
Number four is a daily limit or an international-transaction block. Some debit cards and a few credit cards ship with foreign online purchases switched off by default, or with a daily spending cap below what feels normal. This is common on credit-union debit cards and on cards you rarely use. A two-minute call or an in-app toggle to enable international online purchases clears it.
Number five, and least common, is a genuine card problem — an expired card, a typo in the number or CVV, insufficient available credit, or a card frozen for an unrelated reason. It is last on the list because it is the rarest, but it is worth a ten-second sanity check: right card, right expiry, right three-digit code on the back.

You do not need to diagnose the exact cause to fix it. Run this sequence in order and stop as soon as the payment goes through. Most Americans clear a decline before they reach step three.
The one thing not to do is hammer the retry button. Five or six rapid attempts on the same card look like card-testing fraud to the bank, which triggers a velocity block that can lock the card for the rest of the day. Worse, each blocked attempt can leave a temporary authorization hold on your account — money that is not actually charged but shows as pending and can look alarming if you do not know what it is.
Those pending authorizations are harmless and drop off on their own, usually within a few business days, because a declined charge is never captured. If you see several pending lines after a string of failed attempts and you want to understand exactly what settled versus what will reverse, our explainer on Cambodia eVisa foreign transaction fees and statement charges covers how the holds read on a US statement.

Every US issuer handles a foreign online charge a little differently. Here is what to expect from the big ones, and the single fastest action for each. In every case, the fraud-alert text is faster than calling — reply to it before you dial.
Chase, Bank of America, Wells Fargo, and Citi all send an instant fraud-alert text or app notification on an unfamiliar foreign charge. Reply YES (or tap approve in the app), wait a minute, and retry. Their apps also let you confirm a blocked transaction directly in the activity feed if the text never arrives. You rarely need to call any of the four.
Capital One is one of the most travel-friendly issuers and frequently lets a foreign charge through with no friction at all — but when it does block one, the in-app approval is instant. American Express is similar: Amex tends to approve cleanly, and when it does flag, the Amex app push notification clears it in one tap. Discover is accepted at checkout, but is the least likely of the major networks to be accepted by foreign merchants in general, so if Discover keeps failing, switch networks rather than fighting it.
Credit-union and smaller-bank debit cards are the most common true blocks. Many ship with international online purchases disabled by default as a security setting, and there is no fraud text to approve because the transaction was rejected by policy, not flagged by a model. For these, you must call the credit union or use the app to enable international or online transactions before the charge will ever go through. If your only card is a credit-union debit card, do this step before you reach checkout.
One pattern worth knowing: a prepaid or gift Visa or Mastercard often fails on the verification step because it has no billing address attached for the AVS check to match. If that is the only card you have, a digital wallet is the cleaner path. Our PayPal, Apple Pay, and Google Pay guide for Americans covers setting one up in a couple of minutes so you can finish the payment without hunting for another card.

Occasionally two or three cards in a row decline and it feels like the checkout itself is broken. It is almost never the checkout. When several different cards fail in quick succession, the cause is usually one of three things, and each has a clean answer.
First, you may have triggered a velocity block on the device or session, not on any one card. Rapid repeated attempts — even across different cards — can make the payment processor cautious for a short window. The fix is simple: stop, wait fifteen to twenty minutes, close the tab, and come back fresh. The application is saved; you are not starting over.
Second, every card you tried may share the same billing address problem. If you recently moved and have not updated your address with any of your banks, all of your cards will fail the same AVS check for the same reason. Pull up a recent statement, find the billing address your bank actually has on file, and enter that exactly — even if it is your old place.
Third, and the cleanest escape hatch, is to stop using raw card numbers entirely and pay through a digital wallet. PayPal, Apple Pay, and Google Pay tokenize the transaction, which means the bank sees a wallet it already trusts rather than a raw foreign card-not-present charge, and the fraud model relaxes. This single switch clears the majority of stubborn multi-card declines. If you would rather sort the underlying card block once and for all, our guide on clearing a payment decline for US cardholders walks through the bank-side settings to change.
If you have run all of that and still cannot pay, reach out to US-timezone support rather than retrying a tenth time. The application is held safely while you sort the payment, and there is no penalty for taking an hour to clear a bank block. The eVisa is still approved in 3 business days once the payment lands, so a short delay at checkout does not move your timeline if you are applying with any reasonable lead time.

A declined card on the Cambodia eVisa is the least scary problem in the whole application, because the cause is almost always sitting in a notification on your own phone. Approve the alert, confirm your billing address, retry once, and you are through. The card was never the problem; the bank was just being careful with an unfamiliar charge.
The shape of the whole thing is still simple: Tourist eVisa $80 USD, Business eVisa $90 USD, both delivered as a printable PDF by email, both approved in 3 business days, both with free resubmission if Immigration flags a correction and US-timezone support if the payment sticks. For the complete picture, our guide to the Cambodia visa for US citizens walks through eligibility, documents, and timing end to end. Once the charge clears, you are back on the standard timeline. If you want to confirm which cards and wallets sail through cleanest before you retry, the full payment methods for Americans guide ranks them.
Next steps and related reading for Americans: head back to apply for your Cambodia eVisa once your bank has approved the charge, clear a stubborn bank fraud hold if the alert never arrived, read the foreign transaction fees explainer so the pending holds on your statement make sense, and set up PayPal, Apple Pay, or Google Pay as a backup so a raw-card decline never stops you twice.
A popular pairing for Americans — but all 7 land borders into Cambodia are closed.
Check Cambodia entry rules →The classic Indochina loop. Americans need a separate Vietnam eVisa.
See the entry points guide →The quieter third stop on the regional route for US travelers.
Confirm your documents →Where many Americans connect on the way through to Phnom Penh.
Plan the connection →Your destination — clear the payment, get the eVisa, then file the e-Arrival Card.
Start your eVisa →