Acquirer

An acquirer (also called an acquiring bank or merchant acquirer) is the financial institution that signs a merchant up for card acceptance, feeds that merchant's sales into the card schemes, pays out the resulting funds, and stays answerable to the scheme for whatever the merchant does. It is the merchant-side counterpart to the card issuer, which serves the cardholder.

The defining feature of acquiring is not the technology but the liability. If a merchant collects payments and then cannot honor refunds or a wave of chargebacks, the scheme looks to the acquirer to make the issuers whole. Acquirers therefore underwrite merchants much as a lender underwrites borrowers.

A card payment passes through several parties. The merchant's terminal or payment gateway captures the card details and sends an authorization request to the acquirer or its processor. The acquirer forwards it through the scheme network to the issuer, which approves or declines. Approved transactions are later batched for clearing, and settlement moves funds from the issuer, through the scheme's settlement process, to the acquirer, which then credits the merchant, usually one or more business days later.

Membership rules of the major networks generally allow only licensed financial institutions to be principal acquiring members. Many firms that market themselves as acquirers are in fact processors or payment facilitators working under a principal member's license, sometimes called a sponsor bank arrangement.

The merchant pays a merchant discount rate on each transaction. Out of that, the acquirer passes interchange to the issuer and scheme fees to the network, keeping the remainder as its margin. Pricing is often quoted as a percentage plus a fixed fee, or as interchange-plus, where the merchant sees the pass-through costs and a separate acquirer markup expressed in basis points.

Before boarding a merchant, an acquirer assesses the business model, the merchant category code, expected volumes, delivery times, refund policy and the owners' background. The longer the gap between payment and delivery, the larger the potential exposure: an airline or event promoter that sells tickets months in advance can leave the acquirer holding large refund obligations if it fails.

Common risk controls include:

• A reserve account, where part of the merchant's settlement is withheld for a period.
• Delayed or rolling settlement for new or riskier merchants.
• Volume caps and monitoring of chargeback and fraud ratios against scheme thresholds.
• Enhanced review for high-risk merchants, such as gambling, travel or subscription businesses with high card-not-present volumes.

Acquirers are also responsible for merchant compliance with scheme rules on prohibited goods, transaction laundering and data security, and they are obliged to conduct anti-money laundering checks on the merchants they board.

The terms are often blurred. A processor provides the technical connection and transaction handling; it may not carry settlement liability. A payment facilitator signs up many small sub-merchants under its own master merchant account, taking on onboarding and first-line risk while the sponsoring acquirer remains liable to the scheme. A merchant of record sells to the consumer in its own name and is itself the acquirer's merchant. Understanding which entity holds the acquiring license matters when a dispute or insolvency occurs.

Where the acquirer is located relative to the cardholder affects cost and approval rates. Transactions acquired in the cardholder's own country typically attract lower cross-border scheme fees and are approved more often by issuers. This is why international merchants pursue local acquiring in their major markets, and why some regulators require domestic transactions to be acquired by locally licensed entities.