Payment processors earn money by taking a small cut from each transaction you make
When you swipe a card or pay online, the money does not go straight from your account to the business. It passes through a payment processor — a company that handles the technical work of moving money between your bank and the seller's bank. That company charges a fee for doing this work, and that fee is how they stay in business.
The fee is usually small enough that you do not see it directly. The business pays it, not you. But understanding where that fee comes from and how much it is helps explain why some businesses prefer certain payment methods, why online shopping costs what it does, and why some smaller businesses have minimum purchase amounts or surcharges.
Key Takeaways
- Payment processors charge businesses a percentage of each transaction, typically between 1.5% and 3.5%, plus a flat fee per transaction.
- The processor's cut covers the cost of technology, fraud prevention, customer support, and the risk that a customer will dispute or reverse a charge.
- Different payment methods cost businesses different amounts — credit cards cost more than debit cards, and online payments cost more than in-person ones.
- Processors also make money from monthly subscription fees, setup fees, and by selling additional services like invoicing software or reporting tools.
- The total cost to a business can be 2% to 4% of the sale price, which is why some businesses set minimum purchase amounts or add surcharges for card payments.
The percentage fee and per-transaction charge
The most common way a payment processor makes money is by taking a percentage of the sale plus a flat fee. If you buy something for $100 with a credit card, the processor might take 2.9% of that ($2.90) plus $0.30, for a total of $3.20. The business receives $96.80.
The percentage varies depending on the type of card, how the payment is made, and the processor itself. A credit card typically costs the business more than a debit card. A payment made in person (with a card reader) typically costs less than one made online. A business with high sales volume often negotiates a lower rate than a small business just starting out.
For a business, these fees add up quickly. A coffee shop that sells $5,000 worth of coffee in a day might pay $150 to $200 in processor fees. Over a year, that is $55,000 to $73,000 — money that comes directly out of profit. This is why you sometimes see a sign saying "cash only" or "2% surcharge for card payments under $10."
Why the fee exists: what the processor actually does
The fee is not pure profit. The processor uses it to pay for real costs. First, there is the technology itself — the servers that handle millions of transactions per day, the software that encrypts your card information so it cannot be stolen, and the systems that connect to your bank and the business's bank.
Second, there is fraud prevention. Payment processors employ teams of people and use artificial intelligence to spot suspicious transactions before they happen. If someone steals your card number and tries to buy $5,000 worth of electronics, the processor's system is supposed to catch it. When fraud happens anyway, the processor often absorbs part of the loss.
Third, there is customer support. If a transaction fails, if a customer disputes a charge, or if a business has questions about how to use the system, someone has to answer. The processor pays for that staff.
Finally, there is the risk that a customer will dispute or reverse a charge. A customer might claim they never made the purchase, or that the item never arrived, or that they were charged twice. The processor has to investigate these disputes and sometimes refund the money. That risk is built into the fee.
Different payment methods cost different amounts
Not all payments cost the processor the same amount to handle. Credit cards are expensive for the processor because the card company (Visa, Mastercard, American Express) takes its own cut before the processor gets paid. Debit cards are cheaper because there is no middleman card company involved.
In-person payments are cheaper than online ones. When you hand a card to a cashier or insert it into a reader, the processor knows the card is real and the cardholder is present. Online, the processor cannot see the card or the person, so the fraud risk is higher, and the fee is higher to cover that risk.
Some payment methods are cheaper still. Bank transfers (moving money directly from one bank account to another) cost less than card payments. Digital wallets like Apple Pay or Google Pay sometimes cost less than traditional credit cards because they include extra security built in.
Monthly fees and other sources of income
The per-transaction fee is not the only way processors make money. Many charge a monthly subscription fee just to use their service, whether you process any transactions or not. This might be $10 to $50 per month for a small business, or hundreds per month for a large one.
Processors also charge setup fees when a business first signs up, fees to add features like invoicing or reporting, and fees to use their point-of-sale system (the hardware and software a business uses to ring up sales). Some processors charge a fee if you want to withdraw your money faster than the standard timeline.
Many processors also sell additional services. They might offer accounting software, inventory management, employee scheduling, or marketing tools. These are separate products with separate fees, but they are bundled together to make the processor more valuable to the business.
Why some businesses pass the cost to you
In most cases, the business absorbs the processor fee and you never see it. But some businesses pass it along. You might see a "convenience fee" when you pay a utility bill online, a "processing fee" when you buy concert tickets, or a surcharge when you pay with a credit card instead of cash.
These fees exist because the business has decided that the processor's cut is large enough that they want to recover some of it from the customer. A small business with thin profit margins might add a 2% surcharge on card payments. A large business might absorb the fee as a cost of doing business and include it in the price of the product.
In some states and industries, there are rules about whether and how much a business can charge you for using a card. Some states ban surcharges entirely. Others allow them but cap them at the processor's actual cost. It is worth checking your local rules if you see a surcharge that seems high.
How processors compete and what that means for businesses
Payment processors compete on price, features, and customer service. A processor that charges 2.5% per transaction might lose business to one that charges 2.2%. A processor that offers free invoicing software might win over one that charges extra for it. A processor with good customer support might keep customers even if it is slightly more expensive.
This competition means that the fees businesses pay have come down over time. Twenty years ago, a business might have paid 4% or 5% per transaction. Today, the average is closer to 2% to 3%. But it also means that businesses have to shop around and negotiate. A large business can often get a better rate than a small one straightforward by threatening to switch to a competitor.
For you as a customer, this competition is mostly invisible. You do not choose the processor — the business does. But it affects the prices you pay. A business that negotiates a lower processor fee might pass some of that savings to you. A business that pays high fees might build that cost into higher prices.
Frequently Asked Questions
Do I pay the processor fee directly?
No. The business pays the processor fee, not you. It comes out of the money the business receives from your purchase. However, some businesses add a separate surcharge to your bill to recover part of this cost, especially for online payments or credit card transactions.
Why do some processors charge monthly fees and others don't?
Processors that serve large businesses often charge monthly fees because those businesses process enough volume to make it worthwhile. Processors that serve small businesses or individuals sometimes waive monthly fees and rely entirely on per-transaction fees. Some offer both options so you can choose what works for your situation.
Can a business refuse to accept credit cards?
Yes. A business can accept only cash, only debit cards, or only certain payment methods. However, most businesses accept credit cards because customers expect it and because refusing cards means losing sales. Some very small businesses or those in certain industries (like some restaurants or gas stations) do refuse cards or charge extra to use them.
What happens to the processor fee if a transaction is disputed?
If you dispute a charge and win the dispute, the business refunds your money and the processor typically refunds the fee to the business as well. If the dispute is found in the business's favor, the fee stands. The processor may also charge an additional fee just for investigating the dispute.
Why do online payments cost more than in-person ones?
Online payments carry higher fraud risk because the processor cannot verify that you are the real cardholder. In-person payments are safer because you are physically present with your card. To cover the extra fraud risk, processors charge businesses more for online transactions, and those costs sometimes get passed to you as a higher price or a convenience fee.