What Transaction Laundering Means

Transaction laundering is a hidden business running sales through a merchant's payment credentials. Here is how Visa defines it and how to stay out of it.

Oct 11, 2026

Transaction laundering is when a hidden business runs its card sales through an approved merchant's account. The sales run through that account, but the goods belong to someone else. Visa's standards define it as an unknown business using an approved merchant's payment credentials to take card payments for goods or services it hides.

Why Visa treats it as serious

Visa's guide says transaction laundering lets illegitimate businesses accept payments for illicit goods or services and launder dirty money. The same guide says crooked businesses use it for illegal gambling, fake online drug stores, illegal drugs, and fake goods.

So Visa is not chasing a paperwork error. It is chasing hidden sellers of illegal goods.

Keep your credentials to yourself

Do not share your payment credentials. Not with a partner, not with a friend's business, not with anyone who promises you a cut. If a sale is not yours, it does not belong in your account.

What the card networks do

Visa has a program that hunts for transaction laundering. It uses payment data and machine learning to spot merchants very likely to be doing it. Visa's standards say it takes checks by hand, computer tools, and data review to catch it.

Mastercard's manual lists transaction laundering as a type of activity its ongoing merchant monitoring standards cover. Mastercard's manual says an acquirer that skips its Merchant Transaction Laundering monitoring cannot get related assessments reduced.

Visa's standards say acquirer monitoring aims to detect risks such as fraud, credit issues, disputes, anti-money laundering and illegal activities. Visa's Acquirer Monitoring Program flags acquirers whose merchants rack up too much fraud and too many disputes. It also catches their agents this way. Your numbers feed those thresholds.

Where banks fit

Your processor has a bank behind it. FDIC guidance says payment processors pose greater money laundering and fraud risk if they cannot effectively verify their merchant clients' identities and business practices. FinCEN's advisory says financial institutions providing services to payment processors may find it necessary to update their anti-money laundering programs.

This is part of why a processor checks who you are and what you sell. To see how a processor's bank watches the whole chain, read why banks watch payment processors.

How facilitators and marketplaces screen

You may sell through a payment facilitator. Visa also calls it a PayFac or merchant aggregator. Expect checks. Visa's guide says payment facilitators and marketplaces must screen seller websites for illegal activity, transaction laundering, or deceptive marketing practices.

Visa's standards say the TPA agreement must clearly define duties for transaction monitoring, website monitoring and detection of transaction laundering.

Warning signs acquirers watch

Visa's guide names one pattern worth knowing. Visa's guide says even, round charges that do not match a seller's normal sales may point to cash payouts or transaction laundering.

What you should do

Keep your credentials to yourself. Make sure the descriptions on your sales match what you actually sell. If you sell by phone, keep your billing authorization clean too.

Two related risks are worth knowing. Visa's risk standards say miscoding and transaction laundering risk comes from concealed illegal transactions such as miscoding. That means labeling a sale as something it is not. Do not do it, even if a partner asks.

Visa's rules also say you cannot bundle crypto sales with sales of other items. Keep them apart. If you touch crypto, keep those sales separate from everything else.

Visa's standards say acquirers get news on transaction laundering and miscoding through Visa's PFD messages and V-Alerts. So your acquirer keeps up with these risks. Make sure your account never gives it a reason to look.