An acquirer, or acquiring bank, is the regulated financial institution that holds a merchant’s account, accepts card transactions on the merchant’s behalf, routes them through the card networks and settles the funds. The acquirer carries the financial liability if the merchant cannot cover its refunds, chargebacks or fines, which is why acquirers underwrite merchants so carefully.
Why it matters
Every rule a high risk merchant lives under ultimately flows through the acquirer. Card networks do not police merchants directly; they hold the acquirer responsible, and the acquirer passes obligations, registration fees and reserve requirements down to you. When a processor suddenly asks for more documents or raises your reserve, it is usually the acquirer responding to network pressure. Understanding the distinction between your acquirer and your payment service provider tells you who actually makes the decision you are trying to change.