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Clear out junk files and repair common Windows errorsFree Scan →Scan for outdated or missing drivers - takes under a minuteDriver Scan →Credit card rewards programs make money through a portfolio of income streams rather than one hidden payment. Issuers earn interchange when cards are used, interest when customers carry balances, annual and other fees, and payments from merchants or co-brand partners. Rewards are a real expense, but they also attract customers and encourage more spending. Whether a particular card is profitable depends on the issuer’s costs, the cardholder’s behavior, and the product’s terms.
The business has two different engines
A credit card combines a payment service with a revolving loan. Treating those as one business is the source of many misleading explanations about rewards.
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The transaction engine
When you pay with a card, banks and a payment network authorize, route and settle the transaction. The merchant’s acquiring bank collects a merchant service charge, and part of the amount flows to the card issuer as interchange. The Federal Reserve describes interchange as the main revenue source for the payment or transaction function. That revenue must cover rewards, fraud losses, network and processing costs, servicing, funding and marketing, so interchange is not automatically profit. The Federal Reserve’s profitability analysis explains the distinction.
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If a cardholder does not pay the statement balance in full, the issuer charges interest on the revolving balance. Interest is the main revenue source for the credit function. Late, over-limit where permitted, foreign-exchange and other usage fees can add revenue, as can an annual fee. These amounts are separate from the money earned when a card simply processes a purchase.
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| Income or cost | Who supplies or receives it | Role in the economics |
|---|---|---|
| Interchange | Merchant-side payment system to the issuer | Main transaction-function revenue, before rewards and operating costs |
| Interest | Cardholders who carry balances | Main credit-function revenue |
| Annual and usage fees | Cardholders, depending on the product and event | Additional revenue; annual fees can support benefits and rewards |
| Merchant-funded offers | Participating merchants | Can offset the cost of targeted discounts or rewards |
| Co-brand payments | Airlines, hotels, retailers and other partners | Partner buys loyalty currency or pays for access and benefits |
| Rewards, fraud, servicing and funding | Issuer pays these costs | Reduce transaction and portfolio profit |
No single row explains every card. An issuer can have a high-reward card with a large annual fee, a no-fee cash-back card aimed at revolvers, or a co-branded product with a separate partner contract.
What happens to a $100 purchase
The Federal Reserve uses a simplified $100 illustration to show how a payment can be divided: a $2 interchange fee, a $0.15 network fee, a $0.15 merchant service charge and $97.70 reaching the merchant. The figures are an example from the paper, not a universal fee schedule or a promise that every transaction uses those rates. See “Who Pays For Your Rewards? Redistribution in the Credit Card Market” for the diagram and assumptions.
Interchange belongs to the issuer only after other parties perform their roles, and the issuer then pays its own expenses. If the card awards 2% cash back on that purchase, the $2 reward alone could consume the illustrative $2 interchange before fraud, customer service, rewards administration or financing costs. In practice, issuers use the whole portfolio—not one purchase—to balance profitable and unprofitable transactions.
The merchant’s net receipt also does not prove that merchants fund all rewards. Processing costs may affect a merchant’s pricing decisions, but the cited Federal Reserve analysis describes a possible mechanism rather than a uniform pass-through rate. It does not establish that every merchant raises prices by a particular amount or that all shoppers subsidize rewards equally.
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Why issuers offer rewards despite the cost
Rewards are both an expense and a marketing investment. The Consumer Financial Protection Bureau says issuers use them to acquire and retain customers and to increase spending. More purchases can generate more interchange, create opportunities to sell other financial products and, for customers who revolve, produce interest revenue. The issuer is willing to pay for points or cash back when the expected lifetime value of the account exceeds the cost of the program.
The scale is substantial. In its 2024 Credit Card Rewards Issue Spotlight, the CFPB reported more than $40 billion in rewards on major issuers’ general-purpose cards in 2022—over 50% higher than in 2019. The same report estimated average rewards value at 1.4 cents per dollar spent in 2019 and 1.6 cents in 2022. Those are market-level figures for the years studied, not a guaranteed value for any particular card or redemption.
Why swipe revenue alone is not the whole answer
Rewards can make the transaction function thinly profitable or unprofitable after all costs. In a Federal Reserve study of 13 large issuers using 2014–2021 data, the transaction function was slightly negative on average after rewards and other expenses. The credit function generated approximately 80% of portfolio profitability, while fees contributed approximately 15%. These are estimates for that historical sample, not current percentages that apply to every issuer.
| Finding | Scope and qualification |
|---|---|
| Approximately 80% of profitability came from the credit function | Federal Reserve analysis of 13 large issuers, 2014–2021 data |
| Approximately 15% came from fees | Same sample and period; an estimate, not an industry rule |
| Transaction function was slightly negative after rewards and expenses | Average result in that study, after including rewards and operating costs |
| Revolvers paid most interest and usage fees | Observed in the Federal Reserve sample; behavior differs by portfolio |
This explains why a card can advertise generous rewards while the issuer remains profitable overall. A customer who pays in full may be valuable through interchange, annual fees or partner economics, but a customer who carries a balance can generate substantially more interest revenue. Issuers price credit risk, expected payment behavior and rewards together.
How annual fees and partner deals support rewards
Annual fees
An annual fee is direct issuer revenue. It can help pay for rewards and bundled benefits such as travel services, insurance or statement credits. The fee is economically worthwhile to a cardholder only if the rewards and usable benefits exceed the fee after considering redemption limits and any interest paid.
Merchant-funded offers
A merchant may fund a targeted rebate, bonus category or statement credit to attract a sale. The issuer supplies the distribution, targeting and account relationship, while the merchant pays some or all of the promotional cost. Such offers are not present on every purchase and should not be confused with the issuer’s general rewards liability.
Co-brand cards
Airlines, hotels and retailers can enter co-brand agreements with banks. The issuer may bid for the contract, buy points or miles in bulk and pay the partner for rewards or other benefits. The partner receives revenue and access to the issuer’s customer base; the issuer receives a loyalty currency and a differentiated card proposition.
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Contracts can give the partner influence over how many points or miles are required and how much redemption inventory is available. Consequently, a card’s advertised points balance is not the same thing as guaranteed travel or merchandise value. The CFPB describes these arrangements and their commercial incentives in its 2024 report.
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Who ultimately bears the cost?
Cardholders who carry balances
Interest can quickly exceed the value of rewards. In the Federal Reserve’s observed portfolios, revolvers paid the majority of interest charges and usage fees, including late and annual fees. A person carrying a balance should compare the rewards earned with the interest and fees actually paid; a high earning rate does not make borrowing free.
Cardholders who pay in full
Transactors generally avoid purchase interest, so their account economics rely more on interchange, annual fees, partner payments and the issuer’s expectation that the relationship will remain valuable. They may still pay an annual fee, foreign-exchange fee or other charge, and they still bear the risk that rewards rules change.
Merchants and partners
Merchants pay processing charges connected with card acceptance. Partners can pay issuers for loyalty currency or marketing access. These payments are real parts of the model, but the available evidence does not support saying that merchants alone pay for every reward or that a fixed cost is passed to every shopper.
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The issuer funds rewards up front as an operating expense and absorbs fraud, credit losses, servicing, network and financing costs. It earns a profit only when revenue across the account and portfolio exceeds those costs.
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How to evaluate a rewards card’s real economics
Use the following sequence before deciding whether a rewards offer is valuable to you:
- Identify the reward currency. Determine whether the card pays flat cash back, uses bonus categories or issues points and miles tied to a partner. Do not assign a universal value to points; redemption terms determine the result.
- Calculate annual rewards from your own spending. Multiply eligible spending by the advertised earning rate, then account for caps, exclusions, rotating categories and expiration rules.
- Subtract the annual fee. Include only benefits you can realistically use. A credit for a service you would not otherwise buy is not cash value to your household.
- Check redemption restrictions. Look for minimum redemption amounts, blackout dates, transfer rules, expiration, eligible purchases and the partner’s control over inventory. The CFPB has identified vague conditions that prevent consumers from receiving rewards as a consumer-protection concern.
- Model your payment behavior. If you may carry a balance, estimate interest and late fees using the card’s disclosed terms. Compare that cost with the rewards you expect to earn; paying interest can overwhelm a modest reward rate.
- Review change provisions. Read how the issuer can alter earning rates, redemption values or qualifying purchases. Already-earned rewards can be devalued or deductions can occur without a corresponding benefit, issues highlighted by the CFPB in Circular 2024-07.
Common explanations that get the model wrong
- “Merchants pay for all rewards.” Interchange and merchant-funded offers matter, but interest, annual fees, other fees and co-brand payments also support the business.
- “Every rewards card is profitable from swipe fees.” The Federal Reserve’s sampled transaction function was slightly negative after rewards and expenses, while credit income drove most profitability in that analysis.
- “All consumers subsidize rewards at the same rate.” Merchant pricing responses are possible, but no cited source establishes a universal pass-through amount or equal burden across shoppers.
- “A point balance is cash.” Redemption value can change, and availability can be limited by program rules or partner inventory.
The market scale behind the model
The economics operate across a very large account base. The Federal Reserve Bank of New York’s Staff Report No. 1143, published in March 2025 and revised in August 2026, describes a dataset of about 550 million monthly accounts representing roughly 90% of the U.S. credit card market. That figure describes the report’s account-level data coverage; it is not a claim that every account earns rewards or that all issuers use identical pricing.
Bottom line
Rewards programs are a calculated portfolio expense. Interchange helps pay for the transaction, annual fees and partner money support particular products, and interest and other fees make up the credit side of the business. The issuer’s profit comes from combining those revenues while managing rewards, fraud, funding and credit losses. For a cardholder, the relevant calculation is personal: rewards and usable benefits minus annual fees, redemption friction and any interest or usage fees.
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