Payments6 min readUpdated October 15, 2026

What Is a Closed Loop Payment System?

Closed loop payments explained: three-party networks like Amex vs Visa and Mastercard, closed-loop gift cards, and the US and EU rules that apply.

Nick Bonnassies, CMO at Tagada · checked against 8 sources

Article summary

TL;DR

Closed loop is a payment setup where one company controls both ends of the transaction. The term has two uses: card networks like American Express, which issue cards and sign merchants themselves, and gift or store cards that work only at one merchant or group. Open-loop cards run on shared networks like Visa and Mastercard.

Closed loop has two meanings: a three-party card network (American Express) and a card accepted only by one merchant or group (a store gift card).
In a three-party network, the network is also the issuer and the acquirer. American Express sets the merchant fee, its discount rate, in the merchant contract.
Discover and Diners Club International now belong to Capital One, which completed its acquisition of Discover on May 18, 2025.
US law treats closed-loop gift cards apart: they fall outside the CFPB prepaid account rules, but funds can't expire for at least five years.
In the EU, closed-loop cards can use the PSD2 limited network exclusion, with a notification above EUR 1 million a year.

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On this page

Closed loop is a payment term with two meanings. It describes card networks that run both sides of a payment themselves, and cards that only one merchant accepts. Both share one idea: no outside bank sits between the payer and the merchant.

What does closed loop mean in payments?

	Closed-loop card network	Closed-loop card
Also called	Three-party network	Store, gift or private label card
Who controls both ends	The network: it issues cards and signs merchants	The merchant or group that sells the card
Where it works	Every merchant that signs with the network	One merchant or an affiliated group
Examples	American Express	Store gift cards, campus cards, store credit cards
Open-loop opposite	Four-party networks: Visa, Mastercard	General-use prepaid cards on Visa or Mastercard
Main rules	The network's own contract	Regulation E in the US, PSD2 in the EU

Outside payments, "closed loop" names unrelated ideas, such as toll roads where you pay at the exit.

Closed-loop card networks: three-party vs four-party

On Visa and Mastercard, four parties meet: the cardholder, the issuing bank, the acquirer and the merchant. The network sits in the middle and charges scheme fees, and the issuer earns interchange.

A three-party network removes the split. American Express describes it in its 2025 annual report: "We maintain direct relationships with Card Members (as a card issuer) and merchants (as an acquirer)," and its "card-issuing, merchant-acquiring and card network businesses" work as one "integrated payments platform."1 When the same company issues the card and acquires the payment, the transaction never crosses to another bank, much like an on-us transaction.

The cardholder pays with a card American Express issued.
American Express authorizes as the issuer.
American Express pays the merchant as the acquirer, minus its fee.
One fee, one contract. The merchant pays the discount rate agreed with American Express, with no interchange between two banks.

Source: American Express Form 10-K, fiscal year 2025.

The loop is not fully closed today. The same filing says American Express licenses "third-party banks and other institutions" to issue Amex cards, and that through its OptBlue program third-party acquirers "contract directly with small merchants for card acceptance on our network and determine merchant pricing."1

Discover is the other network usually put in this group. Its card issuing and networks sat inside one company, Discover Financial Services. The Federal Reserve approved Capital One's merger with Discover on April 18, 2025,3 and Capital One completed the acquisition on May 18, 2025: "The Discover, PULSE, and Diners Club International networks will join our suite of offerings."2

Even Visa uses the term. Its rules define a Europe "Closed Loop" as "an environment using a Visa Drive Card where the Acquirer and Issuer are the same" (Visa Core Rules, April 2026, ID# 0029707).7

Closed-loop cards: gift, store and private label cards

The second meaning is about where a card works.

Store gift cards
US law defines them as redeemable "at a single merchant or an affiliated group of merchants," reloadable or not. Single-brand gift cards sit here.
Private label cards
Visa defines one as "a merchant's proprietary card that is accepted only at its own locations." A store credit card is the closed loop credit card most people mean.
Campus and transit cards
Cards that pay inside one university, venue or transit system. Visa's rules mention "closed-loop proprietary college or university" transactions on US Campus Cards.

When a bank uses a Visa BIN for a private label program, Visa requires a "written acceptance agreement directly with each Merchant" that accepts the card (Visa Core Rules, April 2026, section 2.2.2.2).7

Compliance with regulations in closed loop

Rule	United States	European Union
Law	Regulation E, 12 CFR 1005.20 (gift card rules)	PSD2, Article 3(k)
Status	Store gift cards are outside the "prepaid account" rules	Outside PSD2 under the limited network exclusion
Scope	One merchant or an affiliated group	Issuer's premises or a limited network under direct agreement
Key limits	Funds valid at least 5 years; inactivity fee only after 12 months, once a month	Notify the regulator above EUR 1 million in 12 months

United States. The CFPB's prepaid account definition excludes gift certificates, store gift cards and loyalty or promotional cards (12 CFR 1005.2(b)(3)(ii)(D)).5 The gift card rules still apply. Funds must last at least "five years after the date the gift certificate was initially issued, or the date on which funds were last loaded." A dormancy fee needs no activity "in the one-year period" before it, must be printed on the card, and can't be charged more than once a month.4

European Union. PSD2 excludes instruments that let the holder buy "only in the premises of the issuer or within a limited network of service providers under direct commercial agreement with a professional issuer." Above "EUR 1 million" in payments over the preceding 12 months, the issuer must notify its regulator, which decides whether the activity really qualifies.6 For the wider law, see PSD2.

What closed loop means for an online store

Accepting Amex is a separate agreement. Your Visa and Mastercard contract doesn't set your Amex price. American Express describes signing merchants as "agreeing on the discount rate (a fee charged to the merchant for accepting our cards)."1 Under OptBlue, the third-party acquirer sets it. Your price is in the contract. For four-party costs, see credit card interchange fees.

Selling your own gift cards makes you an issuer. You hold the balances and the rules above apply. See stored-value card.

"Closed loop card with API access and custom rules" usually means a restricted open-loop card. Stripe Issuing, for example, offers allowed_categories, blocked_categories, allowed_merchant_countries and spending limits per authorization or month.8 The card still runs on Visa or Mastercard. See card issuing.

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Updated on October 15, 2026

Nick Bonnassies

CMO at Tagada

CMO at Tagada. Before Tagada, Nick built direct-to-consumer brands that generated over $115M in sales, raised over $25M in crowdfunding and sold two of them. He also works as a fractional CMO on marketing operations and AI systems.

Frequently asked questions

What is a closed loop payment system?

It's a payment system where one company controls both ends of the transaction. Either the card network also issues the cards and signs the merchants, as American Express does, or the card works only at the merchant or group that issued it, like a store gift card.

Is American Express a closed loop network?

Mostly. American Express says it keeps direct relationships with cardholders as a card issuer and with merchants as an acquirer, on its own network. It also licenses banks to issue Amex cards and lets third-party acquirers sign small merchants through its OptBlue program, so not every Amex payment stays inside one company.

What is a closed loop card?

A card you can use only at one merchant or an affiliated group of merchants: a store gift card, a campus card or a private label store card. Visa's rules define a private label card as "a merchant's proprietary card that is accepted only at its own locations."

Do closed-loop gift cards expire in the US?

They can carry an expiration date, but under Regulation E the funds must stay valid for at least five years from issue or from the last load. Inactivity fees are allowed only after a year without use, at most once a month, and only if printed on the card.

What is the difference between open loop and closed loop payments?

Open-loop cards run on shared networks like Visa and Mastercard, where one bank issues the card and another signs the merchant, so the card works almost anywhere. Closed-loop payments stay inside one company: one network on both sides, or one merchant that issues and accepts its own card.

Sources

Checked October 15, 2026

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