Acquirer (Acquiring Bank)

An acquirer, also called an acquiring bank or merchant bank, is the financial institution that holds a merchant's account and processes card payment transactions on their behalf. When a customer pays with a credit or debit card, the acquirer receives the transaction from the merchant, routes it through the card network to the issuer for authorization, and ultimately settles the funds into the merchant's account.

The acquirer takes on meaningful financial risk in this relationship. It underwrites the merchant, monitors for fraud and excessive chargebacks, and is held responsible by the card networks if a merchant fails to meet compliance or financial obligations. This is why acquirers set the terms of merchant accounts, including reserve requirements, transaction limits, and acceptable business types.

Acquirers are licensed members of card networks such as Visa and Mastercard. They operate under those networks' rules and are subject to regular compliance reporting. The fees they charge merchants, collectively known as the Merchant Discount Rate (MDR), include interchange fees passed on from the card networks and the acquirer's own processing margin.

For businesses operating across multiple geographies, the acquiring relationship has direct commercial consequences. Authorization rates, settlement timelines, foreign transaction handling, and the range of accepted Local Payment Methods (LPMs) all depend significantly on which acquirer is in place. A merchant selling in Brazil, for example, may see materially different authorization rates depending on whether the acquiring bank is domestic or international. This is one reason why sophisticated payment strategies often involve more than one acquiring relationship, a model enabled by Payment Orchestration platforms like Spreedly.