7 Things to Know About Small Business Credit Card Payment Processing

7 things small businesses should know about credit card payment processing

Accepting credit cards can help you increase sales and meet customer expectations, but payment processing involves more than simply swiping a card. Fees, security requirements, fraud risks and processor policies can all affect your costs and day-to-day operations. Here are seven things every small business owner should know.

1. Processing fees can have a bigger impact than you realize.

Small businesses that accept credit cards pay processing fees on every transaction. Most small businesses pay between 1.5 and 3.5 percent per transaction, depending on the card type, payment method and processor you choose. In-person transactions generally fall on the lower end, while card-not-present transactions — for example, if you accept credit card payments over the phone or sell online — tend to carry higher rates.

While a few percentage points may not seem significant, processing costs can have a noticeable impact on your margins over time. That’s especially true for businesses with high transaction volumes, large-ticket sales or products with already-thin profit margins.

These costs add up quickly. For example, a business processing $50,000 in monthly card sales could pay $1,000 to $1,750 per month in processing fees, depending on its pricing structure.

Many processors also charge a fixed fee per transaction, which can become expensive for businesses that process a large number of smaller purchases.

2. Not all card transactions cost the same to process.

Many business owners assume every credit card transaction costs roughly the same to process. In reality, fees can vary based on the type of card a customer uses and how the payment is accepted.

Some processors use interchange-plus pricing, which passes along the card networks’ interchange fees and adds a markup. Others use flat-rate pricing, which charges the same rate for every transaction regardless of the card used.

For processors that use interchange-plus pricing, several factors can affect the cost of a transaction:

• Card network: Visa, Mastercard, American Express and Discover each have their own fee structures.
• Card type: Debit cards often cost less to process than credit cards.
• Card features: Rewards cards and business credit cards typically carry higher interchange fees than standard consumer cards.

The way a payment is processed can also affect costs:

• EMV chip and contactless payments: Transactions completed in person with an EMV chip or contactless tap generally qualify for lower rates because they present less fraud risk.
• Online, over-the-phone and manually entered payments: These transactions typically cost more to process because they’re more vulnerable to fraud and disputes.

Businesses that use flat-rate pricing won’t see these differences reflected in individual transactions because they’re charged the same rate regardless of the card used. The processor still pays different interchange fees behind the scenes, however.

3. The way a payment is processed affects security.

Not all payment methods offer the same level of protection. While most credit and debit cards support magnetic stripe, EMV chip and NFC mobile payments, some methods are significantly more secure than others.

When customers insert an EMV chip card into a payment terminal or use a contactless payment method (like Apple Pay), the transaction uses a security technology called tokenization. Tokenization swaps sensitive card information with a unique token that can be used to process the payment without ever exposing the customer’s actual account details.

Because the token can’t be tied back to the customer’s actual account, it’s much less useful to criminals if it’s intercepted. That’s one reason EMV chip and contactless payments are generally considered more secure than traditional magnetic stripe transactions.

4. Chargebacks can be more expensive than they seem.

Credit card chargebacks happen when a customer disputes a transaction and their card issuer reverses the payment. While chargebacks can result from fraud, they also occur when customers don’t recognize a charge, misunderstand a merchant’s policies or believe there’s a problem with a purchase.

Chargebacks can be costly, and they’re becoming more common. According to Mastercard’s 2025 State of Chargebacks report, global chargeback volume is expected to grow from 261 million transactions in 2025 to 324 million by 2028. And a chargeback doesn’t just cost a business the original sale — it can also mean lost merchandise, additional fees and time spent gathering documentation and responding to the dispute. Excessive chargebacks can even put a merchant account at risk.

Fortunately, many chargebacks are preventable when businesses communicate clearly and maintain consistent payment practices:

• Communicate clearly: Chargebacks often stem from confusion. Clearly describe your products and services, display refund and return policies prominently and make sure customers recognize the business name that will appear on their credit card statements.
• Keep detailed transaction records: If a customer disputes a charge, you’ll need evidence that the transaction was legitimate. Receipts, shipping confirmations, signed invoices and POS system reports can all help demonstrate what was purchased, when the transaction occurred and how it was fulfilled.
• Process transactions promptly: Customers are more likely to question a charge they don’t remember making. If too much time passes between a purchase and when it appears on a credit card statement, confusion can set in and increase the likelihood of a dispute.

5. Your business isn’t too small for a payment security breach.

Cyberattacks are a serious threat to businesses of every size. Verizon’s 2026 Data Breach Investigations Report found that exploiting software vulnerabilities is now the most common way attackers gain access to organizations, accounting for 31 percent of breaches. For small businesses with limited IT and cybersecurity resources, keeping systems patched and secured can be especially challenging.

Small businesses also shouldn’t assume they’re too small to be targeted. A 2025 Coalition study found that 79 percent of small businesses experienced at least one cyberattack in the previous five years, yet 64 percent didn’t believe they were attractive targets for cybercriminals.

When payment data is compromised, the costs often go beyond the lost dollars. A breach can disrupt operations, lead to customer notification and legal expenses, and damage a business’s reputation. Just as importantly, it can undermine customer trust — something that’s much harder to rebuild once it’s lost.

To help protect your business and customer payment data:

• Understand your PCI compliance responsibilities: Businesses that accept credit cards must follow the Payment Card Industry Data Security Standard (PCI DSS), which outlines security requirements for handling cardholder data. Failing to meet PCI compliance requirements can increase your risk of data breaches and may result in additional fees or penalties from your payment processor.
• Keep payment systems and software up to date: Attackers frequently exploit known vulnerabilities that haven’t been patched. Regularly updating payment terminals, operating systems and business software can help reduce that risk.
• Identify security gaps before criminals do: Periodically review your payment processes, network security controls and access permissions to uncover weaknesses before they become larger problems.

6. Not all payment security issues originate with a hack.

When people think about payment security breaches, they often picture sophisticated hackers breaking into company systems. In reality, many incidents begin with a simple mistake, such as an employee clicking a malicious link, reusing a compromised password or falling for a phishing scam. In fact, Verizon’s 2026 Data Breach Investigations Report (cited above) found that the human element was involved in 62 percent of breaches.

Because employees are often the first line of defense, security awareness is just as important as technology. Consider the following best practices:

• Train employees to recognize phishing attempts: Suspicious emails, text messages and phone calls remain some of the most common ways cybercriminals gain access to business systems and launch phishing or ransomware attacks.
• Use strong passwords and multifactor authentication: Require employees to create unique passwords and enable multifactor authentication wherever possible to reduce the risk of unauthorized access.
• Protect login credentials: Passwords shouldn’t be left on sticky notes, saved in unsecured files or shared casually between employees. If there’s any reason to believe a password has been exposed, change it right away.
• Use email security tools: Spam filters and email security software can help identify malicious messages before they reach employees’ inboxes.

7. The less payment data you handle, the lower your risk.

Many businesses increase their security exposure without realizing it by writing down card numbers, storing payment information unnecessarily or using unsecured devices to process transactions. The more sensitive payment data your business handles, the greater the potential impact of a breach.

To reduce risk and improve in-store and online payment security:

• Avoid storing card information unless it’s absolutely necessary: Customer card numbers should never be written down or kept in unsecured files.
• Use secure payment tools: Process transactions through approved payment terminals, mobile readers and online payment apps rather than manually collecting payment information.
• Secure mobile payment devices: Use strong passwords, enable device updates and keep payment apps current to help protect customer data.

Payment processing best practices

The right payment processing setup can help you control costs, protect customer data and create a smoother checkout experience. Use the following best practices to get the most value from your payment processing system.

Choose a processor that fits your business.

Not all payment processors are the same. Pricing structures, contract terms, hardware options, software features and customer support can vary significantly. Before choosing a provider, compare several of the best credit card processors and look beyond the advertised transaction rate.

“Common issues that pop up when integrating credit card processing include a lack of transparency when it comes to fees and contract terms,” said Jeff Bucher, senior director of treasury management sales at Flagstar Bank. “These impact mission-critical components like processing times and rates and common hidden fees can be statement fees or noncompliance penalties.”

It’s also crucial to review each provider’s pricing structure, contract requirements, hardware costs, software capabilities and customer reviews before making a decision. Darian Shimy, CEO of FutureFund Technology, emphasized the importance of flexibility. “I’ve found that working with processors who offer month-to-month agreements makes it easier to pivot if a better solution comes along,” Shimy said. “I’m also cautious of providers that push equipment leasing at inflated rates. It’s almost always better to buy outright.”

Review your processing statements and contract regularly.

The payment processor that worked well when your business launched may not be the best fit as your needs evolve. As sales volume grows, a different pricing model could reduce your costs. You may also find that you need more advanced features, such as industry-specific tools, customer management capabilities or marketing integrations.

Take time to review your processing statements, fees and contract terms periodically. Look for increases in processing costs, new fees or services you’re paying for but no longer use. If your business has changed significantly, ask whether your current provider offers a better-fitting plan or compare other processors to see if you could get more value elsewhere.

Accept the payment methods your customers prefer.

Today’s customers expect flexibility at checkout. While credit and debit cards remain popular, many consumers also pay with digital payment methods, tap-to-pay options and buy now, pay later (BNPL) services. The easier it is for customers to pay the way they prefer, the less likely they are to abandon a purchase.

Most payment processors support a variety of payment methods, including credit cards, debit cards and mobile wallets such as Apple Pay, Google Pay and Samsung Pay. Some processors also integrate with BNPL providers and other alternative payment methods. Review your processor’s capabilities and make sure the payment options your customers are most likely to use are enabled.

Plan ahead for international sales.

If you sell internationally or plan to expand globally, don’t assume domestic payment processing rates and requirements will apply everywhere. International transactions often involve additional processing fees, currency conversion costs and regional payment preferences.

Before expanding internationally, take a close look at what your payment processor actually supports. Features like multi-currency payments, local payment methods and translated checkout pages can make the buying experience much smoother for international customers. You’ll also want to factor in country-specific costs, such as value-added tax (VAT), duties and other fees associated with cross-border sales.

Protect customer payment data.

Even if your payment processor is PCI-compliant, protecting customer payment information is still a shared responsibility. A few simple safeguards can go a long way toward reducing risk.

• Limit access to sensitive payment data: Employees should only have access to the payment information they need to do their jobs.
• Train employees on secure payment procedures: Make sure employees understand how to handle payment information properly and recognize potential security threats, such as phishing scams.
• Encrypt stored data whenever possible: Encryption helps protect sensitive information if systems are compromised.
• Assign unique logins to each employee: Individual user accounts make it easier to control access and identify suspicious activity.
• Work with cybersecurity professionals when needed: Whether you rely on an internal IT team or a third-party cybersecurity provider, regular security reviews can help uncover vulnerabilities before they become bigger problems.

Use payment hardware that fits your business.

The right payment hardware can improve security, speed up checkout and create a better customer experience. If you’re still using older card readers, consider upgrading to equipment that supports EMV chip cards and contactless payments. These payment methods are generally more secure and often more convenient for customers and employees.

Mobile card readers can also be valuable beyond traditional mobile businesses. Retailers, restaurants and businesses with large showrooms may use mobile POS devices to reduce lines, assist customers on the sales floor or complete transactions anywhere in the store.

As your business grows, periodically evaluate whether your current payment hardware still meets your needs and supports the payment methods your customers expect.

Use fraud prevention tools.

Online payment fraud can be difficult to spot manually, especially as transaction volume grows. Many payment processors offer built-in fraud prevention tools that flag suspicious activity before a transaction is approved.

Features such as address verification service (AVS), card verification value (CVV) checks and transaction monitoring can help identify potentially fraudulent purchases. Some processors also offer more advanced tools that analyze transaction patterns and alert businesses to unusual activity.

Review the fraud-prevention features included with your payment processor and consider whether additional protection is worth the cost for your business.