ShouldEye Trust Intelligence Glossary

Payment Processing Terms

Gateways, processors, PayFacs, merchant of record, fees, and acceptance rails.

Educational information only. ShouldEye does not provide legal, banking, or individualized financial advice. Dispute rights, deadlines, and outcomes depend on your payment method, card network, issuer, processor, jurisdiction, and the facts of your case. Legal Disclaimers

41 published definitions in this topic.

Payment Processing

Acquirer

An acquirer is the merchant’s bank or acquiring institution that enables card acceptance and handles merchant-side dispute messaging.

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Payment Processing

Acquiring Bank

An acquiring bank sponsors merchants into card networks and settles card proceeds to merchants.

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Payment Processing

Acquiring Host

An acquiring host is the acquirer-side processing system that receives authorization and clearing messages for merchant transactions.

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Payment Processing

Acquiring Processor

An acquiring processor is a company that processes merchant card transactions on behalf of an acquiring bank or program.

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Payment Processing

Aggregator Merchant

An aggregator merchant is a master accepting party that collects payments on behalf of multiple underlying sellers.

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Payment Processing

Banking as a Service

Banking as a Service (BaaS) lets fintechs offer bank-like features through APIs backed by licensed sponsor banks.

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Payment Processing

BIN Sponsor

A BIN sponsor is a bank that allocates card BINs or acquiring ranges so program managers can issue or acquire under the bank’s membership.

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Payment Processing

Card Network

A card network is the scheme that sets rules and routes messages between issuers and acquirers.

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Payment Processing

Card Scheme

A card scheme is the rulebook and brand framework under which card payments are accepted and cleared.

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Payment Processing

Cross-Border Acquiring

Cross-border acquiring processes a card payment where merchant acquiring and cardholder regions differ under scheme cross-border rules.

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Payment Processing

Electronic Money Institution

An electronic money institution (EMI) is authorized to issue electronic money and often provide related payment services.

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Payment Processing

Embedded Finance

Embedded finance distributes financial products—payments, accounts, credit, insurance—inside non-financial customer journeys.

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Payment Processing

Embedded Payments

Embedded payments are payment acceptance features built into non-payments software products.

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Payment Processing

Full-Stack Payment Provider

A full-stack payment provider bundles gateway, processing, and often acquiring or PayFac capabilities in one offering.

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Payment Processing

Gateway-Only Provider

A gateway-only provider supplies payment connectivity without itself acting as the merchant’s acquirer.

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Payment Processing

Independent Sales Organization

An independent sales organization (ISO) markets and boards merchants for an acquirer or processor, often without being the acquirer itself.

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Payment Processing

Independent Software Vendor

An independent software vendor (ISV) provides software that embeds or integrates payments for businesses.

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Payment Processing

Issuer

An issuer is the bank or institution that provides a payment card or account to the consumer.

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Payment Processing

Issuer Processor

An issuer processor is a technology provider that runs authorization, card management, and related services for card issuers.

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Payment Processing

Issuing Bank

An issuing bank provides the payment card and authorizes charges against the cardholder’s account.

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Payment Processing

Local Acquiring

Local acquiring processes card payments through an acquirer in the same country or region as the cardholder or merchant market.

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Payment Processing

Merchant

In payments, a merchant is the business that accepts a payment for goods or services and may appear on the statement via a descriptor.

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Payment Processing

Merchant Account

A merchant account is the acquiring relationship that lets a business accept card payments and receive settlement.

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Payment Processing

Merchant Identification Number

A Merchant Identification Number (MID) is an acquirer- or facilitator-assigned account identifier for a merchant’s acceptance facility.

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Payment Processing

Merchant of Record

The merchant of record is the entity legally responsible for the card transaction toward the acquirer and network.

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Payment Processing

Money Services Business

A money services business (MSB) is a US-oriented category for firms that transmit money, exchange currency, or offer similar services.

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Payment Processing

Multi-Acquirer Strategy

A multi-acquirer strategy uses more than one acquiring partner to improve resilience, approval rates, or geographic coverage.

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Payment Processing

Payment Acceptance

Payment acceptance is a merchant’s ability to take customer payments through supported methods such as cards, wallets, or bank transfers.

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Payment Processing

Payment Facilitator

A payment facilitator is a master merchant that onboards sub-merchants under its acquiring relationship.

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Payment Processing

Payment Gateway

A payment gateway is software that securely transmits payment data between a checkout and processors or acquirers.

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Payment Processing

Payment Infrastructure

Payment infrastructure is the stack of banks, networks, processors, gateways, and rails that move authorization messages and funds.

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Payment Processing

Payment Institution

A payment institution is a regulated firm authorized to provide payment services without being a full-service bank.

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Payment Processing

Payment Network

A payment network is any system that connects institutions to exchange payment messages and settle obligations.

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Payment Processing

Payment Orchestration

Payment orchestration is middleware that routes, retries, and optimizes payment attempts across gateways, acquirers, and methods.

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Payment Processing

Payment Processor

A payment processor is a company that routes authorizations and settlements between merchants, acquirers, and card networks.

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Payment Processing

Payment Rail

A payment rail is a specific path or system used to move a payment from payer to payee.

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Payment Processing

Payments as a Service

Payments as a Service delivers acceptance, processing, and related payments capabilities via APIs or platforms as an outsourced service.

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Payment Processing

Sponsor Bank

A sponsor bank is the licensed bank that sponsors non-bank programs—such as processors, PayFacs, or fintechs—into payment networks.

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Payment Processing

Sponsored Merchant

A sponsored merchant is a seller that accepts payments under another party’s acquiring sponsorship or program.

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Payment Processing

Sub-Merchant

A sub-merchant is a seller boarded under a payment facilitator’s or aggregator’s master merchant account.

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Payment Processing

Terminal Identification Number

A Terminal Identification Number (TID) identifies a specific point-of-sale or acceptance device within a merchant’s acquiring setup.

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