What Are the Average Credit Card Processing Fees? (w/Examples) + FAQs

The average credit card processing fee runs between 1.5% and 3.5% of each sale. The exact number depends on the card network, the pricing structure your processor uses, and whether the customer paid in person or online.

That range holds up across multiple independent estimates, including NerdWallet and Bankrate. Three separate charges make up the fee: interchange paid to the card issuer, an assessment fee paid to the network, and a markup your processor keeps.

Pricing and rates reflect figures published as of 2026. Processors change their rates often, so confirm the current numbers on each provider's own pricing page before you switch. This guide covers U.S. card processing for small and mid-size businesses.

What Makes Up a Credit Card Processing Fee

A single swipe or click triggers three separate charges, not one flat fee. The interchange fee goes to the bank that issued the customer's card, and it makes up the largest share of the total cost. The assessment fee goes to the card network itself, such as Visa or Mastercard, to cover the cost of running the network. These two charges are set by the banks and networks, not by your processor, so no amount of negotiating with your processor changes what you pay for either one.

The third piece is the processor markup, the fee your processor adds for handling the transaction. This is the one part you can usually negotiate, since banks and networks set interchange and assessment fees, not your processor. A merchant who only negotiates the markup, while ignoring card type, still overpays on rewards and corporate cards.

Beyond these three core charges, most processors add smaller fees worth knowing about. A monthly account fee, a PCI compliance fee for meeting card security standards, and a chargeback fee for disputed transactions can all sit on top of the per-sale rate. None of these show up in the headline percentage a processor advertises. A business comparing two quotes on rate alone can miss real cost differences hiding in the fine print of each contract, especially around monthly minimums and early cancellation terms.

A common misconception treats "processing fee" as a single flat number quoted at signup. It is not. The real rate on any given sale depends on the card type, the transaction channel, and even the customer's specific card issuer, which is why two businesses using the same processor can pay noticeably different effective rates. Reading your monthly statement line by line, rather than trusting the headline rate you signed up for, is how you see your true blended cost.

Average Rates by Card Network

Rates vary by network, and the spread is wider than most business owners expect. American Express interchange runs from about 1.43% plus 10 cents up to 3.30% plus 10 cents, per one bankrate breakdown of network-level fees. Visa and Mastercard run lower, from roughly 1.15% plus 5 cents up to about 2.50% plus 10 cents, depending on the card and channel. Discover sits in between the two groups, running from about 1.40% plus 5 cents up to 2.40% plus 10 cents on the same transaction types.

American Express costs more because it runs a closed network, issuing its own cards instead of partnering with outside banks. That structure gives Amex more control over its pricing. Even so, most U.S. merchants still accept Amex, since the lost sales from declining it usually outweigh the higher fee.

Assessment fees stack on top of interchange and are typically small on their own. Visa and Mastercard each charge roughly two cents per transaction plus a fraction of a percent of total card volume, billed monthly instead of per sale. A business with high card volume feels these fees more than one with a handful of large transactions. A retailer running thousands of small daily sales should watch this line, since the per-transaction piece compounds fast even though each charge looks tiny.

Card type also shifts the rate within a single network. A plain debit card almost always processes cheaper than a rewards or corporate card from the same issuer, since the bank treats it as lower risk. A business that tracks which cards its customers present can estimate its blended rate better than one relying on a single published average. That tracking also helps with budgeting for a busy season, when the mix of card types your customers use can shift noticeably from the rest of the year.

Pricing Structures Compared

Processors package these three layers into one of four common pricing structures, and the difference between them can be substantial at scale. Flat-rate pricing, used by Square, Stripe, and PayPal, charges one blended percentage plus a small flat fee on every transaction, regardless of card type. It is predictable and easy to understand, though it can cost more overall than other structures.

Tiered pricing splits cards into three buckets: qualified cards like plain debit cards, mid-qualified cards with modest rewards, and non-qualified cards like corporate or high-rewards cards. Qualified cards get the lowest rate, and non-qualified cards get the highest. Your effective rate depends heavily on which cards your customers carry. This structure usually costs a little less than flat-rate pricing, but it still runs higher than interchange-plus in most cases.

Interchange-plus pricing charges the real interchange rate for each specific card, plus a fixed markup the processor keeps. This structure often costs the least for high-volume businesses, since you pay closer to the true wholesale rate. It carries more variability month to month, since your bill moves with the mix of cards your customers use.

Subscription-based pricing, used by processors like Stax, swaps a percentage-based fee for a flat monthly charge plus a small per-transaction fee. Stax, for example, charges a subscription starting near $99 a month plus 8 cents per in-person transaction on top of interchange. This structure tends to favor businesses with high sales volume, where a flat monthly fee beats a percentage that would otherwise scale with revenue.

Picking between these four structures comes down to one question: does your fee grow faster than your sales, or slower? A percentage-based structure like flat-rate or tiered pricing always grows with revenue, while a subscription plan stays flat until you add another location or terminal. Knowing which side of that line your business sits on is worth more than comparing headline percentages alone.

How Rates Compare Across Popular Processors

Real published rates make the differences concrete, per NerdWallet's processor comparison. PayPal charges 2.29% plus 9 cents in person, and Square charges 2.6% plus 15 cents on its free plan for the same channel. Stripe runs 2.7% plus 5 cents in person. Shopify ranges from 2.4% to 2.6% plus 10 cents, depending on your plan tier.

Card-not-present transactions cost more across every processor, since a missing physical card raises fraud risk. Square's online rate climbs to 3.3% plus 30 cents, and manually keyed transactions run even higher at 3.5% plus 15 cents on most flat-rate processors. Helcim takes a different approach entirely, charging interchange plus 0.4% and 8 cents for in-person sales under $50,000 a month, which often undercuts flat-rate processors at higher volumes.

Finix, aimed at larger platforms, prices differently again. It charges 8 cents plus interchange for card-present sales and 15 cents plus interchange for card-not-present sales. That structure suits a business with the volume and staff to manage an interchange-based bill, not a small shop that wants one predictable number each month. Comparing processors on a single headline rate misses these differences, since the cheapest-looking rate on a pricing page is not always the cheapest rate for your transaction mix.

Which Situation Applies to You?

A small business processing under $10,000 a month in cards usually does best with a simple flat-rate processor like Square or Stripe. The predictability outweighs the small savings a complex structure might offer. A growing business processing $50,000 or more a month should evaluate interchange-plus pricing instead, where the wholesale rate saves real money once volume climbs. A business that takes mostly online or keyed payments should weigh card-not-present rates heavily, since that channel carries the biggest gap between providers.

A software platform or marketplace routing payments for other businesses fits a different profile. It should look at a subscription or interchange-based model like Finix or Stax, not a flat rate built for a single storefront. The right structure is the one that matches your real transaction mix, not the lowest number on a pricing page. Revisit the decision once a year, since your sales mix and the processors' rates both shift over time.

Worked Example: Flat-Rate vs. Interchange-Plus on $10,000 in Sales

Say a retailer processes $10,000 in card sales in a month, evenly split between debit and standard credit cards, mostly in person. On a flat-rate plan at 2.6% plus 15 cents per transaction, across roughly 200 sales of $50 each, the retailer pays about $260 in percentage fees plus $30 in flat fees, for a total near $290. That single number is what shows up on the statement, with no breakdown of interchange versus the processor's own markup, so the retailer has no clean means of telling how much of that total is even negotiable with the processor. A single combined line item hides the split between a fixed cost and a real, changeable fee.

On an interchange-plus plan, the math looks different. Interchange runs near 1.5% on this card mix, plus a 0.4% markup and 8 cents per transaction. That works out to about $150 in interchange, $40 in markup, and $16 in flat fees, for a total near $206.

That $84 monthly difference adds up to roughly $1,000 a year, money that stays in the business instead of the processor. The breakdown also shows which part is negotiable: the $40 markup is the processor's fee. The $150 interchange charge is fixed by the card networks and cannot be talked down.

The gap narrows or reverses at lower volume. Interchange-plus pricing carries its own minimum fees and more complex statements to review each month. A business processing only a few thousand dollars a month may find the savings too small to justify the added complexity. Running both numbers side by side before switching is how you find out which structure wins for your volume and card mix.

Three Lessons From Businesses Switching Processors

A boutique retailer switched from flat-rate to interchange-plus and cut its monthly fee by 15%. The retailer had been on a flat 2.6% rate for two years without ever comparing it to an itemized interchange-plus quote. Once a competing processor broke down the real interchange cost on the store's typical card mix, the owner saw the markup was only adding a fraction of what the flat rate had been charging.

A subscription box company misjudged its card mix and picked the wrong structure. The company assumed tiered pricing would save money since it advertised a lower "qualified rate" than the flat-rate competitor. Most of its customers paid with rewards credit cards that fell into the expensive non-qualified tier, so the company ended up paying more overall than a simple flat-rate plan would have charged.

A service business negotiated its processor markup and left everything else unchanged. The business had been paying a flat 3.5% rate on manually keyed phone payments for over a year. A single call asking the processor to lower its markup, backed by a competing quote, cut the effective rate to 3.1% without switching providers or changing how the business took payments at all.

These three cases point to the same underlying pattern. Businesses that never compare an itemized quote, or never call to negotiate, tend to keep paying whatever rate they signed up with years earlier. A single afternoon spent pulling a competing quote and reviewing a real statement is often the entire cost of finding hundreds of dollars a year in real, ongoing savings. That small time cost rarely gets weighed against the actual dollar savings it can uncover.

Mistakes to Avoid

• Assuming your quoted rate is the only rate. The advertised flat rate rarely applies to every transaction type your business runs, since keyed and online payments almost always cost more.
• Never comparing an itemized interchange-plus quote. Skipping this comparison is the single biggest reason businesses overpay on flat-rate plans they never revisit.
• Picking tiered pricing without checking your real card mix. A low "qualified rate" means little if most of your customers pay with rewards cards that fall into a pricier tier.
• Ignoring the flat per-transaction fee. A small flat fee, like 15 or 30 cents, adds up fast for a business with many small-dollar sales.
• Declining American Express to avoid its higher fee. Most merchants find the lost sales cost more than the extra fee Amex charges.
• Never negotiating your processor's markup. The markup portion of your rate is usually negotiable, even when interchange and assessment fees are not.
• Overlooking monthly or annual account fees. Some processors add fees beyond the per-transaction rate, including statement fees, PCI compliance fees, and equipment rental.
• Switching processors without checking your real transaction mix. A rate that looks cheaper on paper can cost more once your actual channel mix and card types are factored in.

Do's and Don'ts

Do

• Do ask any processor for an itemized interchange-plus quote before committing to a flat rate.
• Do track what share of your sales come from card-not-present transactions, since that channel costs the most.
• Do negotiate your processor's markup directly, since it is the one piece of the fee within its control.
• Do review your monthly statement for account fees beyond the basic per-transaction rate.
• Do compare at least two processors using your real transaction volume and full card mix, not a generic quote.

Don't

• Don't assume a lower advertised rate always means a lower total bill.
• Don't pick tiered pricing without knowing what share of your cards fall into each tier.
• Don't decline American Express purely to avoid its somewhat higher processing fee.
• Don't ignore flat per-transaction fees when comparing two percentage-based rates.
• Don't switch processors based on a headline rate alone without checking the fine print on keyed and online transactions too.

Pros and Cons of Interchange-Plus Pricing

Pros

• Lower cost at scale. High-volume businesses typically pay less overall than they would on a flat-rate plan.
• Transparent breakdown. Your statement shows the real interchange rate and the processor's markup separately, making it easier to spot overcharges.
• Easier to negotiate. Since the markup is separated from interchange, you can push back on the one number your processor controls directly.
• Rewards lower-cost card mixes. A business whose customers mostly use debit or plain credit cards benefits directly from the lower wholesale rate.
• Scales fairly. The rate reflects the real cost of each transaction instead of a blended average that overcharges simple transactions.

Cons

• Less predictable bill. Your total cost moves with the mix of cards your customers use each month.
• More complex statements. Reading an itemized interchange-plus bill takes more effort than reading a single flat-rate line.
• Can cost more at low volume. Minimum fees and account costs can outweigh the savings for a small business with limited sales.
• Harder to compare across providers. Two interchange-plus quotes with different markups are harder to compare side by side than two flat rates.
• Requires more active management. Getting the most from this structure means periodically reviewing your card mix and renegotiating the markup.

What to Do Next

1. Pull your last three months of processing statements and calculate your real effective rate across all transaction types.
2. Break down your sales by channel: in-person, online, and manually keyed, since each carries a different cost.
3. Request an itemized interchange-plus quote from at least one competing processor, even if you plan to stay on a flat rate.
4. Ask your current processor to lower its markup, using a competing quote as leverage.
5. Check your statement for account fees beyond the per-transaction rate, and ask what each one covers.
6. Revisit this comparison every year, since processors update rates and new pricing structures enter the market regularly, and last year's best deal may no longer be the cheapest option available to your business.

Frequently Asked Questions

What is the average credit card processing fee?

Between 1.5% and 3.5% of each transaction. The exact number depends on the card network, the pricing structure, and whether the sale happened in person or online.

Why do some processors charge more than others for the same sale?

Processors set their own markup on top of interchange and assessment fees. A higher markup means a higher total rate. This holds even when the underlying interchange cost is identical between the two processors.

Is American Express more expensive to accept than Visa or Mastercard?

Yes, usually. Amex runs a closed network and sets its own fees, often landing above Visa and Mastercard on the same transaction type.

What is the difference between flat-rate and interchange-plus pricing?

Flat-rate pricing charges one blended rate on every sale. Interchange-plus pricing charges the real wholesale rate instead. It adds a separate, fixed markup on top.

Can I negotiate my credit card processing fees?

Yes, in most cases. The processor's markup is usually negotiable. Interchange and assessment fees are set by the card networks and cannot be changed.

Do online transactions cost more to process than in-person ones?

Yes. A missing physical card raises fraud risk, so card-not-present transactions typically carry a higher rate than a swiped or tapped sale.

What is tiered pricing, and is it a good deal?

Tiered pricing sorts cards into qualified, mid-qualified, and non-qualified buckets with different rates. It can look cheap on paper. It can still cost more if your customers mostly use rewards cards.

How much do assessment fees typically cost?

A small fraction of a percent of total card volume, plus a couple of cents per transaction. These are billed monthly rather than charged per individual sale.

Is subscription-based pricing worth it for a small business?

Usually only at higher volume. A flat monthly fee can beat a percentage-based rate once your sales are high enough to make the math work.

Do processing fees apply to refunds?

Usually not the full fee. Most processors return the percentage portion of the fee on a refund. They typically keep the small flat per-transaction fee, though.

How can I lower my credit card processing costs?

Negotiate your processor's markup and compare an interchange-plus quote. Steer more transactions toward lower-cost channels, like in-person swipes over manually keyed entry.

Do all processors charge the same rate for debit and credit cards?

No. Debit cards typically carry lower interchange fees than credit cards. Rewards and corporate credit cards carry the highest fees of all.

Does the size of my business change my processing rate?

Often, yes. Higher-volume businesses have more leverage to negotiate a lower markup. They also qualify more easily for interchange-plus pricing than a brand-new, low-volume account.

Can I pass processing fees on to my customers?

In most states, yes, through a disclosed surcharge or a cash discount. The exact rules and caps vary by state and card network, though.

Why did my processing rate go up without any notice?

Card networks update interchange and assessment rates periodically, usually once or twice a year. Processors typically pass those changes straight through to your bill without extra notice.