Credit card processing fees explained: What small businesses really pay

Every time a customer completes a credit card transaction at checkout, a payment processing system deducts transaction fees before the funds reach your merchant account. The difference between the transaction amount and what lands in your bank account may look small, but over hundreds of credit card payments, it becomes a material cost.

For small business owners, credit card processing fees are often the largest hidden expense in day-to-day operations. Monthly fees, per-transaction fees, higher fees for online payments, and unclear pricing structures all erode cash flow without warning.

Before choosing a payment processor or evaluating payment options, it helps to understand what actually makes up your credit card processing cost. This guide breaks down the real fee structures behind every sale.

Understanding credit card processing fees

Credit card processing fees equal interchange plus assessment plus processor markup, and most small businesses pay between 1.5% and 3.5% per transaction as a result. Each credit card payment involves multiple financial institutions and service providers, and their combined cuts form your total payment processing cost.

Interchange fees come first. Interchange rates are set by card networks such as Visa, Mastercard, and American Express and paid to the issuing bank, also called the card issuer. These interchange fees vary by type of card, whether the transaction is card-present or part of e-commerce, and the risk profile of the payment method. You can review the Visa USA interchange reimbursement fees and the Mastercard interchange rates for US merchants directly on the networks' own sites.

Assessment fees follow. Each credit card network charges an assessment fee to cover operating and regulatory costs. These are small percentages of the transaction amount, but they apply to every credit card transaction regardless of your pricing model.

Processor markup is added on top. Your payment processor or merchant services provider layers its own markup over interchange and assessment fees. This is where pricing varies most across credit card processors, with flat-rate, interchange-plus, and tiered pricing models producing very different payment processor fees.

Extra and hidden fees apply on top of all of the above. Many credit card processing companies also charge monthly fees, PCI compliance costs set by the PCI Security Standards Council, chargeback fees, and extra fees for declined payments. These hidden fees rarely appear in headline pricing but significantly raise your bottom line over time.

Common pricing models explained

Every payment processor structures fees differently, but most credit card processors rely on one of three core pricing models. The right model depends on your monthly sales volume and your card mix, so the decision comes down to a break-even calculation rather than a universal best choice.

Flat-rate pricing simplifies everything. You pay a single flat fee for every credit card transaction, regardless of the type of card or payment method used. This model is easy to budget, especially for in-person transactions and contactless checkout, but it carries a higher effective rate for high-volume merchants because you pay the same percentage on every sale even when the underlying interchange cost is lower. Making less than $20,000 per month? Flat-rate pricing is usually the lowest-hassle, lowest-total-cost option.

Interchange-plus pricing reflects real interchange rates. This model charges the actual interchange fees and assessment fees from card networks, plus a processor markup per transaction. It often produces lower rates for high-volume merchants, but requires more accounting work to track payment processor fees across different payment methods. Processing more than $50,000 per month with a mix of debit and credit cards? Interchange-plus usually beats flat-rate, because debit card interchange is capped low (see the table below) and the markup stays flat.

Tiered pricing hides complexity. Transactions are sorted into "qualified," "mid-qualified," and "non-qualified" buckets. Many online transactions and premium cards fall into higher-cost tiers, leading to unpredictable payment processing fees and higher processing costs over time. Tiered pricing is rarely the best choice for small business owners because the bucket definitions are opaque and the mid and non-qualified rates are often higher than a comparable flat-rate.

Average credit card processing fees for small business

Most small businesses pay between 1.5% and 3.5% per credit card transaction, a range consistent with Federal Reserve research on merchant payment costs, which finds that credit card processing fees typically range from 1.5 to 3 percent of the transaction amount before processor markup. Ecommerce sellers and high-risk merchants often face higher fees because online payments are card-not-present transactions: the card is not physically seen at checkout, so the fraud risk is higher and the liability for chargebacks falls on the merchant rather than the issuer. Industries with elevated chargeback ratios, such as travel, gaming, and supplements, typically pay the highest rates.

Source: Federal Reserve Regulation II (Debit Card Interchange Fees and Routing) for the regulated debit cap; Visa USA interchange reimbursement fees and Mastercard interchange rates for US merchants for credit card ranges. Debit card interchange for regulated issuers is capped at 21 cents plus 0.05% of the transaction under the Durbin Amendment, with a 1-cent fraud-prevention adjustment. These ranges illustrate why reviewing fee structures and transaction fees across different payment options is essential for protecting your cash flow.

Why are businesses charging 3% to use a credit card?

Rising interchange rates and payment processor fees have made card acceptance more expensive for many service providers. To protect the bottom line, some merchants now pass these payment processing fees directly to customers. Visa's most recent Merchant Surcharging Q&A caps credit card surcharges at 3% of the transaction, which is why the 3% figure shows up at checkout.

Merchants cover rising interchange fees. Card networks and issuing banks periodically adjust interchange rates; Visa and Mastercard last updated US interchange schedules in October 2025, with the next routine review expected in April 2026. These increases push up the credit card processing cost for many small businesses.

Per-transaction fees, assessment fees, and markup add up quickly, especially for businesses with high sales volume. A 2.9% rate on $15,000 in monthly sales is $435 in fees before any per-transaction charges.

Applying a surcharge reduces the gap between the transaction amount and the funds deposited into your bank account. The math is direct: passing a 3% fee on a $100 sale returns $3 to the merchant.

Credit card surcharges must follow PCI compliance guidelines, state laws, and card network disclosure rules to avoid penalties or disputes. The compliance burden is modest, but skipping it exposes the business to chargebacks and network fines.

Is it illegal to charge a 3% credit card fee?

In most U.S. states, credit card surcharges are legal when they are disclosed clearly and capped at the actual processing cost, but requirements vary by jurisdiction and card issuer. Surcharging is prohibited in Connecticut, Massachusetts, Maine, and Puerto Rico, according to the NCSL summary of state surcharge statutes; several other states impose disclosure or cap requirements.

Follow state-level laws. Some states restrict or ban credit card surcharges, so business owners must verify local regulations before changing checkout pricing. Connecticut, Massachusetts, and Maine currently prohibit surcharges outright.

Notify card networks in advance. Visa's Merchant Surcharging rules require merchants to register with their acquirer at least 30 days before applying a surcharge. Mastercard's US Region merchant surcharge rules require advance notice to both Mastercard and the merchant's acquirer. Both networks cap the surcharge at the actual processing cost or 3%, whichever is lower.

Display fees transparently. The surcharge must be visible at the point of sale and on receipts so the cardholder is never surprised by extra fees.

Cap the surcharge correctly. The surcharge cannot exceed your actual credit card processing cost per transaction, and Visa caps it at 3% even when your effective rate is higher.

Who actually pays credit card transaction fees?

The merchant pays credit card processing fees by default. Surcharges or cash discounts can shift the cost to the customer.

At checkout, the cardholder pays the full transaction amount, but the processing cost is deducted before funds reach your merchant account. This means the business, not the customer, carries the real cost of credit card payments unless a surcharge or cash discount is applied.

Small business owners absorb interchange fees, assessment fees, payment processor markup, and other payment processing fees on every credit card transaction. There is no way to pass these costs back to the cardholder without an explicit surcharge program.

Your payment processor removes transaction fees before transferring the balance to your bank account, so you never receive the full sale amount. A $100 sale at a 2.9% rate lands as $97.10 in your account.

Some merchants apply credit card surcharges at the point of sale so the cardholder covers part or all of the processing cost. This is the most direct way to shift the fee, but it requires the state-law and network-registration steps above.

Offering a cash discount encourages alternative payment methods and reduces reliance on credit card processing for in-person transactions. Cash discounts face fewer legal restrictions than surcharges because they reward cash rather than penalizing cards.

Visa, Mastercard, and American Express require that any surcharge be clearly disclosed and capped at the actual credit card processing cost. The same disclosure rules apply regardless of which network the cardholder uses.

Comparing credit card processors

Not all credit card processing companies structure fees or support the same payment options. The table below compares JIM against two named competitors on the conditions small business owners evaluate first: in-person rate, online rate, monthly fee, hardware requirement, and payout speed. If you are weighing hardware specifically, our credit card reader for small business guide covers reader costs and Tap to Pay alternatives in more depth.

Source: JIM's official pricing page, accessed 08/2026. Source: Square's official website, accessed 08/2026. Source: Stripe's official website, accessed 08/2026. JIM's advantage is the lowest in-person percentage rate and instant payout with no hardware purchase; Square and Stripe both require either a reader or a supported device and settle funds over one or more business days. Conditions are not fully equivalent: Square and Stripe support chip-insert and swipe transactions, while JIM accepts contactless only.

Look beyond the advertised flat fee and review the full fee structures, including payment processor fees, markup, and hidden monthly fees. A 2.6% rate with a $15 monthly fee costs more than a 2.9% rate with no monthly fee once annualized at low volume.

Some credit card processors settle funds in one to three business days, while others release funds instantly or same-day, affecting your cash flow. Traditional merchant services often require card readers and dedicated POS systems, while modern providers rely on mobile point-of-sale apps. Watch for long-term agreements, cancellation penalties, and extra fees buried in merchant account terms. Ensure the provider supports all major credit card networks, including Visa, Mastercard, and American Express, across in-person and online payments. For a wider view of payment methods for small businesses, including digital wallets and ACH, see our dedicated guide.

Credit card processing fees comparison: small business examples

Seeing real numbers helps business owners understand how payment processing fees affect the bottom line. The examples below are illustrative, calculated at the stated rate assumptions to show how different pricing models change the total credit card processing cost for common small business scenarios.

These examples are illustrative, not actual customer data. The flat-rate equivalent column uses JIM's 1.99% Tap to Pay rate as a benchmark. Even small differences in pricing structure can compound into thousands of dollars per year.

Reducing your credit card processing fees

You cannot eliminate interchange fees entirely, but business owners can take practical steps to lower payment processing costs. The biggest lever for most small businesses is moving in-person sales to contactless Tap to Pay, because contactless transactions qualify for card-present interchange rates and avoid the per-transaction hardware fees traditional processors charge.

Use contactless and chip payments. Card-present and contactless transactions reduce fraud exposure and often qualify for lower interchange rates than keyed or online transactions. A flat-rate contactless rate of 1.99% per sale, like JIM's Tap to Pay pricing, sits at the low end of the in-person range in the table above and carries no hardware or monthly fee. For a step-by-step setup, see the guide to how to accept contactless payments on your phone.

Consolidate your payment gateway. Using a single payment gateway for ecommerce and in-store checkout simplifies reconciliation and can reduce service provider fees. JIM's Payment Link covers remote and online sales at 4.99% + 30¢ without a separate gateway contract.

Negotiate processor markup. Merchants with consistent sales volume above $50,000 per month can often request lower markup or per-transaction fees from their payment processor. Below that volume, flat-rate pricing usually wins on total cost.

Eliminate hidden fees. Audit statements for extra fees such as PCI non-compliance charges, statement fees, or monthly account maintenance costs. These line items can add $120 to $400 per year even when the headline rate looks competitive.

Control chargebacks proactively. Clear refund policies, accurate receipts, and responsive customer support reduce disputes and costly chargeback fees. Each chargeback typically carries a $15 to $25 fee on top of the reversed transaction.

Pros and cons of flat-rate processing

Flat-rate pricing remains popular among small business owners who want predictable payment processing fees without hidden fees or complex interchange-plus pricing. The trade-off is a higher effective rate at scale in exchange for simplicity at low volume.

Pros

Predictable costs. Every credit card transaction is charged the same flat fee, simplifying budgeting. JIM's 1.99% per Tap to Pay sale is the same whether the sale is $2 or $2,000.

No hidden fees. Flat-rate pricing avoids surprise monthly fees and obscure assessment charges. There is no separate PCI compliance fee, statement fee, or account maintenance fee on a true flat-rate plan.

Simple setup. Business owners can accept credit card payments without negotiating complicated merchant services contracts. JIM's setup takes minutes and requires only an iPhone.

Faster cash flow. Flat-rate mobile processors often pay out instantly, while traditional merchant accounts settle in one to three business days. Instant access to funds protects cash flow for small businesses.

No hardware dependency. Mobile point-of-sale systems remove the need for physical card readers. Tap to Pay on iPhone turns the phone itself into the terminal.

Cons

Higher effective rate at scale. Large merchants with high sales volume often find interchange-plus pricing offers a lower total cost once monthly volume passes roughly $50,000, because debit card interchange is capped low under the Durbin Amendment and the processor markup can be negotiated down.

Contactless only. JIM's flat-rate Tap to Pay accepts contactless cards and digital wallets but does not support chip-insert or magnetic-stripe transactions. Businesses with customers who still use swipe or chip-insert cards need a reader for those sales.

No interchange-level transparency. Flat-rate pricing bundles interchange, assessment, and markup into one number, so the merchant cannot see the underlying interchange cost per transaction. This makes it harder to audit whether premium-card sales are being priced correctly.

Limited card-not-present optimization. Flat-rate online rates are typically higher than negotiated interchange-plus online rates. JIM's Payment Link rate of 4.99% + 30¢ is competitive for occasional remote sales but higher than a dedicated ecommerce gateway for high online volume.

Cut your credit card processing fees and take control of your bottom line

Credit card processing fees affect every sale, from the transaction amount you see at checkout to how much actually reaches your bank account. When small business owners understand pricing models, interchange fees, and hidden fees, they gain real control over payment processing costs.

JIM helps small businesses accept credit card payments using only an iPhone, removing the need for card readers, POS systems, or complex merchant services contracts. With flat-rate pricing of 1.99% per Tap to Pay sale, no monthly fees, and instant payouts to your JIM Visa prepaid card, it replaces confusing fee structures with one clear pricing model. That simplicity protects cash flow and removes friction from everyday payment processing.

Want to stop guessing what your payment processor is charging you? Explore JIM and see how easy it is to run cost-effective, contactless checkout.