In payments, Discover is a card brand and payment network based in the United States. The Discover card is a credit card issued mainly to American consumers, and the Discover Network is the system that authorizes, clears and settles transactions made with it. For most of its history both were run by one company, Discover Financial Services, which made it a card issuer and a card network at once. Since May 2025 the business has been part of Capital One Financial Corporation.
Discover is one of the four major card networks in the United States, with Visa, Mastercard and American Express, and is the smallest of them by purchase volume. Like American Express, it follows the three-party card model, in which the network deals directly with both cardholders and merchants.
History
The Discover card was launched nationally in 1986 by the retailer Sears through its financial services subsidiary, Dean Witter. It entered a market dominated by bank cards with two features that were unusual at the time: no annual fee and a cash rebate on purchases, an early form of cash-back rewards. Because competing banks would not issue or acquire it, Sears built a separate network and signed up merchants itself.
Sears spun off Dean Witter, including Discover, in 1993. Dean Witter merged with Morgan Stanley in 1997, and Morgan Stanley spun Discover off as an independent listed company, Discover Financial Services, in 2007. Two acquisitions extended the network beyond its own credit cards: Pulse, a debit and ATM network, in 2005, and Diners Club International, bought from Citigroup in 2008, which brought a brand accepted in many countries.
A court ruling also shaped its development. In litigation brought by the United States Department of Justice, rules of Visa and Mastercard that barred their member banks from issuing cards on rival networks were found to be anticompetitive, and from 2004 other banks were free to issue Discover and American Express cards.
Acquisition by Capital One
Capital One, a large United States bank and card issuer, announced an agreement to acquire Discover Financial Services in February 2024 in an all-stock transaction. After approval by shareholders and banking regulators, the deal closed in May 2025. The acquisition gave Capital One its own payment network, and the company has begun moving its debit cards, and some credit cards, from other networks onto Discover's.
How the network operates
In the four-party card model, an issuing bank and an acquiring bank sit on either side of the network, and an interchange fee passes between them. Discover's core credit card business is a closed-loop card scheme: the same group issues the card, lends to the cardholder and owns the network. It earns interest and fees from cardholders and a discount fee from merchants.
For merchant acceptance, however, Discover relies heavily on third parties. Large merchants may contract with it directly, but most small and medium-sized merchants receive Discover acceptance through their existing acquirer or processor as part of a bundle with other card brands. Other financial institutions also issue cards on the network, in which case the arrangement resembles the four-party model.
Brands and network partners
- Discover Network. The credit card network in the United States.
- Pulse. A network for PIN and signature debit and ATM transactions, serving cards issued by thousands of banks and credit unions. It competes for debit routing with the debit networks of Visa and Mastercard.
- Diners Club International. A charge card brand issued by licensees in many countries, whose cards are accepted on the Discover Network in the United States.
To extend acceptance without building a presence in every country, Discover has signed reciprocal agreements with other networks. Cards of JCB of Japan, UnionPay of China and RuPay of India, among others, can be used at Discover merchants in the United States, and Discover and Diners Club cards are accepted on those networks abroad. Collectively the company markets this as Discover Global Network.
Regulation
Discover's card-issuing bank is regulated as a United States bank, and following the acquisition the business falls under Capital One's supervision by the Federal Reserve and the Office of the Comptroller of the Currency. In 2023 Discover disclosed that for many years it had placed some credit card accounts in the wrong pricing tier, causing merchants and acquirers to be overcharged, and that it faced regulatory action over compliance and governance; it agreed to compensate those affected.
Debit interchange rules matter to the network's place within Capital One. The Durbin Amendment caps debit interchange for large issuers through Regulation II, but the cap applies to four-party arrangements; a bank that issues debit cards on a network it owns is treated differently, which was widely noted as one of the commercial reasons for the acquisition.