American Express
Financial services and payment card company
American Express, often called Amex, is a financial services company that issues charge and credit cards, operates its own global payments network, and provides banking and travel-related services. Unlike Visa and Mastercard, American…
Definition
American Express, often called Amex, is a financial services company that issues charge and credit cards, operates its own global payments network, and provides banking and travel-related services. Unlike Visa and Mastercard, American Express has historically operated as a three-party network, both issuing cards directly to consumers and businesses and acquiring merchants to accept those cards, rather than relying primarily on third-party issuing banks.
Overview
American Express occupies a distinct position among major card companies because it has traditionally combined the roles that Visa and Mastercard split between themselves and partner banks: issuing cards to consumers and businesses, extending credit or charge terms, operating the network that routes transactions, and signing up merchants to accept those cards. This three-party structure, sometimes called a closed-loop network, has historically let American Express control more of the customer relationship and transaction data directly, though the company has also expanded into partnering with other banks to issue Amex-branded cards under a more open model in some markets. Operationally, when a cardholder uses an American Express card, the transaction can, in the traditional closed-loop case, flow entirely within Amex's own systems from merchant acceptance through cardholder billing, without needing to hand off authorization to a separate issuing bank the way a Visa or Mastercard transaction typically does. This vertical integration has historically supported premium features like detailed spending categorization, concierge services, and rewards programs funded partly by higher merchant fees, since Amex negotiates its own merchant discount rate rather than relying on a separately set interchange system. American Express also issues both charge cards, which traditionally required paying the full balance each billing cycle, and revolving credit cards that allow carrying a balance, differentiating its lineup from pure open-network competitors. American Express sits alongside Visa and Mastercard as one of the small set of globally recognized card brands, but it differs in that its historical closed-loop model gave it narrower merchant acceptance in some markets, since merchants had to sign up specifically with Amex rather than gaining acceptance automatically through a bank relationship, as they might with a Visa- or Mastercard-issuing bank. It differs from Discover, another three-party network historically, primarily in brand positioning and target customer base, with American Express leaning more heavily into premium travel and business-card segments. It's also distinct from payment processors like Stripe or Adyen, which help merchants accept many card brands including American Express, rather than being a card brand or issuer themselves. In practice, American Express is widely used by business travelers and premium consumers drawn to its rewards programs, airport lounge access, purchase protections, and business expense management tools, and by companies issuing corporate cards for employee travel and expense tracking. Some merchants, particularly small businesses in certain regions, have historically been more selective about accepting American Express due to its typically higher merchant fees compared to Visa or Mastercard transactions, though acceptance has broadened over time as Amex has adjusted its pricing and expanded partnerships. Limitations include that narrower merchant acceptance in some countries and smaller retail categories compared to the near-universal acceptance of Visa and Mastercard, meaning cardholders sometimes need a backup payment method when traveling or shopping at smaller merchants. The premium rewards and services that differentiate American Express are often funded through annual fees on many of its cards, which can outweigh their value for cardholders who don't travel frequently or spend heavily in the card's bonus categories. Businesses seeking the broadest possible customer reach for card acceptance typically still prioritize Visa and Mastercard support first, adding American Express as a secondary option where cost and demand justify it.
Key Features
- Historically closed-loop network combining card issuance, network, and merchant acquiring
- Charge card products traditionally requiring full balance payment each cycle
- Revolving credit card lines alongside traditional charge card offerings
- Premium rewards programs including travel points and airport lounge access
- Business and corporate card products with expense management tools
- Purchase protection and extended warranty benefits on many card products
- Negotiated merchant discount rates set directly by American Express
- Expanding bank-partnership model issuing Amex-branded cards more broadly
Use Cases
Alternatives
Frequently Asked Questions
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