Most businesses pay 1.5% to 3.5% per transaction in credit card processing fees. Where you land depends on your pricing model, the type of transaction, and your processor. Individually, those charges seem minor, but across every sale, they can add up quickly and have a meaningful impact on your margins over time. Research from Harvard Business School found that interchange fees influence both merchant pricing and sales, underscoring the importance of understanding exactly what you’re paying.
This guide breaks down the different types of credit card processing fees, common pricing models, how to calculate your effective processing rate, and which costs you can negotiate and which you can’t. Whether you’re evaluating a new payment processor or trying to reduce your current costs, understanding how these fees work can help you make smarter payment decisions and protect your bottom line.
Key Takeaways
- Your effective rate depends on factors such as your pricing model, card mix, transaction type, and payment processor.
- There are four types of processing costs: interchange fees, assessment fees, processor markup, and other account or service fees (such as monthly fees, PCI compliance fees, or chargeback fees).
- Interchange and assessment fees are non-negotiable. Card networks and issuing banks set these fees. The part you can typically negotiate is your payment processor’s markup.
- Interchange-plus pricing is generally the most transparent pricing model. It separates interchange and assessment fees from your processor’s markup, so it is easier to understand exactly what you’re paying.
- You can calculate your effective processing rate using a single month’s statement. Divide your total processing fees by your total card sales, then multiply by 100.
What Are Credit Card Processing Fees?
Credit card processing fees are the costs your business pays to accept credit and debit card payments. These fees cover the services required to authorize, process, secure, and settle each transaction, including access to the card networks, fraud prevention and encryption, and the movement of funds between the customer, card issuer, and your business.
Most processing costs fall into four categories: interchange fees, assessment fees, processor markup, and other account or service fees.
Processing is a direct cost on every card sale, so it’s worth understanding closely. Small differences between providers can add up over time. Understanding how these fees are structured makes it easier to compare providers, identify unnecessary charges, and determine whether you’re paying a competitive rate.
How Much Are Credit Card Processing Fees?
Most businesses pay an effective credit card processing rate of 1.5% to 3.5% per card transaction, including interchange fees, card network fees, and their payment processor’s markup.
Where your business falls within that range depends on several factors, including your pricing model, the types of cards your customers use, whether transactions are card-present or card-not-present, your average ticket size, and your industry.
For example, an eCommerce business that processes a high volume of rewards credit cards typically pays more than a brick-and-mortar retailer that primarily takes card-present transactions.
| Effective processing rate | What it typically means |
| 1.5%–2.0% | Lower-risk businesses with mostly card-present transactions, lower-cost cards, and competitive pricing. |
| 2.0%–3.0% | Typical range for many small and midsize businesses across retail and service industries. |
| 3.0%–3.5%+ | Businesses with more eCommerce or card-not-present transactions, higher fraud risk, premium rewards cards, or less favorable pricing |
What Are the Main Types of Credit Card Processing Fees?
Credit card processing fees fall into two buckets: the non-negotiable fees every processor pays, and the markup that’s set by your provider. The sections below cover each fee, starting with the ones you can’t change.
Interchange fees
Interchange fees are the processing fees you pay to the card-issuing banks. The company that issued your customer’s card (usually their bank) will collect this payment, and it’s generally the largest portion of the total fee pool. You can reasonably expect that anywhere from 50-70% of the credit card processing fees you pay fall into this category (depending on your pricing structure and the types of cards you accept). There are roughly 300+ rates any single transaction could fall under, and the exact interchange rate is determined by things like:
- Transaction amount. While not always considered, exceptionally large transactions may be more expensive than smaller ones.
- Type of card. For example, business cards cost more than debit cards, and rewards cards can cost more to accept than standard consumer credit cards.
- Entry mode. In-person payment methods are generally cheaper than online or manually entered transactions (due to the higher fraud risk associated with those methods). So, if a transaction is processed using a card-not-present method, or if you manually enter a card number instead of swiping or tapping it in person, you, as the merchant, can expect to pay a higher interchange fee.
- Your business type. Different rates apply to different types of businesses (determined by MCC codes). For example, restaurants and retailers can expect to pay more than 501(c) (3) nonprofits, and travel or hospitality businesses can expect to pay slightly more than restaurants and retailers.
Assessment fees
Assessment fees are the fees that go directly to the card brands/networks. You’ll recognize the card brands as Visa, MasterCard, American Express, and Discover. They take the second-largest chunk of the fees you pay each month (of course, depending on your payment processor). These fees cover access to the card associations and networks. The exact card brand access fees or assessment fees you’ll pay will vary depending on things like:
- The total processing amount. Each card brand charges a base association fee between 0.11% and 0.15%, and some add a monthly fee (such as the Visa FAN Fee) based on your total volume under their umbrella.
- Card origin. If the card is used in the US but issued in another country (more common in tourist areas), you may incur an additional assessment fee for accepting it.
- Number of requests. Each requested piece of data (such as address verification, CVV code, etc.) adds to the transaction’s overall bandwidth.
Payment processor markup
The third piece of this puzzle is the payment processor’s fees. These fees go directly to the merchant service provider you signed an agreement with to cover services such as your merchant account, access to their network partnerships, and processing costs (like servers, security, support, etc.).
Because these fees are set by your payment processor rather than the card networks or issuing banks, there’s room for negotiation. In fact, this is the part of your processing costs where providers typically differ the most. Choosing the right processor and pricing model can significantly impact your overall effective rate, even when the underlying interchange and assessment fees remain the same.
Other fees you might see
There are additional fees you may find on your statement that don’t fall under any of these categories, including things like:
- Early termination fee. This fee may be charged if you terminate your relationship with your merchant service provider before your contract expires.
- A payment gateway fee. This fee gives you access to a payment gateway (often requiring a third-party agreement through a company like Auth.net).
- Chargeback fee. This fee comes after a customer issues a formal dispute against your business and doesn’t believe you’re owed the funds for one of several reasons. It’s an administrative fee that covers the mini-court case over who is rightfully entitled to the funds.
- Monthly minimum fee. If your processing fees for the month don’t reach the set minimum, your provider charges the difference to cover the shortfall.
- PCI compliance fee. A recurring charge tied to meeting the Payment Card Industry Data Security Standard (PCI DSS) for handling cardholder data securely.
- Statement fee. A flat monthly charge for producing and delivering your processing statement, whether paper or electronic.
- Batch fee. A small fee is applied each time you settle (or “batch out”) a day’s transactions for deposit.
What Are the Common Credit Card Processing Fee Structures?
Now that you know which fees you’ll pay, here’s how processors package them. Every provider works from the same base costs, so the real difference is the pricing model they use, and some make their markup far easier to see than others.
Flat-rate pricing charges the same percentage and per-transaction fee for every card payment, regardless of the card type or underlying interchange cost. It’s simple to understand and makes monthly costs more predictable, which is why it’s popular with newer businesses. The tradeoff is that you’ll often pay the same rate for low-cost debit transactions as you do for higher-cost rewards credit cards, and this can increase your overall processing costs.
Tiered pricing sorts transactions into categories like qualified, mid-qualified, and non-qualified. The catch is that it’s the processors who determine which tier each transaction lands in, and the criteria aren’t always clear. While the advertised qualified rate may look attractive, many transactions end up in the more expensive tiers, making costs harder to predict and compare across providers.
Interchange-plus is the most transparent pricing structure because it passes the interchange and association fees to you at cost, with your processor applying a disclosed markup on top of them. This is the gold standard pricing structure in the payments industry (and it is the one most likely to be in your favor as a merchant).
Membership pricing is an emerging trend in payment processing. Instead of charging a percentage markup on every transaction, the processor charges a monthly membership fee and passes interchange and assessment fees through at cost. In exchange, you typically pay a small, fixed fee per transaction. This model can lower processing costs for businesses with higher monthly card volume, though it’s not always the most cost-effective option for businesses with lower sales.
Here’s a quick reference table that sums up each pricing structure:
| Structure | How it works | Transparency | Best for |
| Interchange-plus | Interchange + assessment passed at cost, plus a disclosed markup | Highest | Merchants who want a clear view of costs |
| Flat-rate | One fixed percentage + per-transaction fee for every card | Moderate | Newer or low-volume businesses wanting predictability |
| Tiered | Transactions sorted into qualified/mid/non-qualified tiers | Lowest | Small, low-volume merchants who want simplicity over the lowest rate |
| Membership/subscription | Monthly fee + interchange assessment at cost + small fixed per-transaction fee | High | High-volume merchants |
How to Calculate Your Credit Card Processing Fees
To determine what you’re paying in credit card processing fees, regardless of your pricing structure, calculate your effective processing rate. Your effective rate is simply the average percentage of your card sales that goes toward processing fees. To calculate it, divide the total processing fees you paid during a given period by your total credit card sales for that same period.
Formula: total processing fees ÷ total card sales = effective processing rate
For example, if you paid $300 in processing fees on $10,000 in card sales (excluding cash transactions), your effective rate would be: $300 ÷ $10,000 = 0.03, or 3.0%.
You can also use this rate to estimate future processing costs. For example, if your business processes $100,000 in card sales and your effective rate is 1.5%, you can expect to pay about $1,500 in processing fees. At a 3.5% effective rate, those fees would be about $3,500. If your effective rate seems higher than expected, it may be worth reviewing your pricing model or processor.
How to Lower Your Credit Card Processing Fees
You can often lower credit card processing fees without changing how you accept payments. Choosing a more transparent pricing model, encouraging lower-cost payment methods when appropriate, and eliminating unnecessary fees can all help reduce your overall processing costs.
The key is understanding which fees are fixed and which ones you can influence. Once you know where your money is going each month, you’ll be in a much better position to compare providers and avoid paying more than necessary.
Final Thoughts
Your total processing cost is really four things stacked together: interchange, assessment, your processor’s markup, and any add-on account fees. Knowing each one makes it easier to see exactly where your money goes each month. Interchange and assessment fees are set by the card networks and issuing banks, so those are fixed — but your processor’s markup is the highest cost you can actually control. That’s why calculating your effective rate regularly is one of the fastest ways to spot unnecessary costs and check whether your deal is still competitive. When you’re comparing providers, look for transparent pricing, minimal or no hidden fees, and a pricing model that fits your business; for many merchants, interchange-plus gives the clearest view of what they’re paying. If you’re looking for a payment processor with transparent pricing and no hidden fees, explore Kurv’s pricing to see how our plans compare.
Frequently Asked Questions
Who pays credit card processing fees?
The merchant pays credit card processing fees whenever a customer pays with a credit or debit card. Some businesses choose to recover part of that cost through a credit card surcharge where permitted, but the rules vary by state and card network.
How much do businesses pay in credit card fees?
Credit card fees range from 1.5% to 3.5%, but your exact rate depends mainly on your pricing model and card mix.
How much would I pay in fees on $100,000 in card sales?
The amount you’ll pay depends on your effective processing rate. For example, if you process $100,000 in card sales at an effective rate of 2.5%, your processing fees would be approximately $2,500. On the other hand, if your effective rate is 1.5%, your processing fees would be about $1,500. Reviewing a recent merchant statement is the best way to determine your effective rate and estimate your actual costs.
What are the main types of credit card processing fees?
Most processing costs fall into four categories: interchange fees, which go to the card-issuing bank; assessment fees, which go to the card networks; processor markup, which is the payment processor’s fee; and other account or service fees, such as monthly fees, PCI compliance fees, or chargeback fees. Of these, the processor’s markup is typically the part you can negotiate.
Can I charge customers a credit card surcharge?
It depends. Credit card surcharges are subject to state laws and card network rules, and the requirements can change over time. Before implementing a surcharge program, verify that it’s legal where you operate and that your program complies with all applicable network requirements.
What is the maximum credit card merchant fee?
Technically, there is no maximum merchant fee you could be charged for accepting credit cards. There is minimal regulation in this regard (though the Durbin Amendment sets maximum limits for what could be charged to your credit card processor for regulated debit cards). If you’re on a flat rate or a less transparent pricing structure, you won’t benefit from this regulation. Ultimately, whatever agreement you sign with your merchant services provider dictates the maximum amount they can charge you for credit card merchant fees.
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