Credit cards have become the default way many customers expect to pay, whether they’re shopping in person, online, or on the go. Choosing the right payment solution can help you accept more payment methods, improve the checkout experience, and keep processing costs under control.
According to the Federal Reserve’s Triennial Payments Study, card payments (credit, debit, and prepaid) now account for over 75% of all noncash transactions in the U.S. Furthermore, data from the Fed’s Diary of Consumer Payment Choice shows that credit card usage alone has surged to 35% of all consumer payments—making it the single fastest-growing payment method over the past decade.
This guide explains how small business credit card processing works, what merchant services include, how much you can expect to pay, and what to look for when comparing providers so you can find a solution that fits your business today and scales as you grow.
What is credit card processing for small business?
Credit card processing for small business is the system that lets businesses accept credit and debit card payments from customers. Behind every transaction, payment technology securely verifies the card, transfers funds between financial institutions, and deposits the money into the business’s account. Whether you sell in-store, online, or on the go, credit card processing makes it possible to accept electronic payments quickly and securely.
While the process happens in just a few seconds, several providers work together behind the scenes, including payment processing companies, payment gateways, merchant accounts, card networks, and banks. The right setup depends on how your business operates, the payment methods you accept, and the features you need, such as recurring billing, invoicing, mobile payments, or ecommerce integrations.
How credit card processing works
The process to move money from the customer’s bank to your own takes a few seconds (most of the time), but there’s always a lot happening in the background. Here’s a look at how everything works.
Customer initiates payment
The process starts when a customer pays using a credit card, debit card, or digital wallet like Apple Pay or Google Pay. Depending on your business, they might tap, insert, swipe, or enter their card details online. The payment terminal or checkout page captures the transaction details and sends them for authorization.
Payment gateway encrypts the transaction
For online payments and many modern in-person payment systems, the payment gateway securely encrypts the customer’s payment information before it’s transmitted. This helps protect sensitive card data and ensures the transaction is sent safely to the payment processor.
Payment processor routes the payment
The payment processor acts as the middleman. It receives the encrypted payment information and routes it to the appropriate card network while communicating with the banks involved. This all happens in real time, allowing transactions to be approved or declined within seconds.
Card network approves the transaction
The card network, such as Visa, Mastercard, American Express, or Discover, forwards the authorization request to the customer’s issuing bank. The bank checks whether the card is valid, whether sufficient credit or funds are available, and whether there are any signs of fraud. It then sends an approval or decline back through the same chain.
Acquiring bank settles funds
If the transaction is approved, the acquiring bank, sometimes called the merchant’s bank, receives the authorized transaction and begins the settlement process. This is when the funds are prepared for transfer from the customer’s issuing bank to your business.
Funds reach the merchant account
After settlement is complete, the funds are deposited into your merchant account or business bank account, depending on your payment setup. Deposit times vary by provider, but many payment processors offer next-day or even same-day funding, giving businesses faster access to their revenue.
What you need to accept credit cards
Accepting credit cards is easier than ever, but there are still a few key pieces that need to work together behind the scenes. Depending on your payment provider, some of these services may come bundled into a single solution, while others are offered separately. Here’s what you need to start accepting card payments.
Merchant account
A merchant account is a type of bank account that temporarily holds card payments before they’re deposited into your business bank account. Some payment providers give you a dedicated merchant account, while payment facilitators combine multiple businesses under a shared account to simplify setup.
Payment processor
The payment processor is the company that moves transaction data between your business, the customer’s bank, the card network, and your acquiring bank. It authorizes payments, helps detect fraud, and ensures approved transactions are routed for settlement.
Payment gateway
If you accept payments online, you’ll typically need a payment gateway. It securely captures and encrypts customers’ payment information before sending it to the payment processor for authorization. Many modern payment platforms include a gateway as part of their service.
POS system
A point-of-sale (POS) system lets you ring up sales and accept payments in person. Beyond processing transactions, many POS systems also help manage inventory, customer information, employee permissions, and sales reporting, making them the operational hub for retail stores, restaurants, and other brick-and-mortar businesses.
Card reader or terminal
If you accept in-person payments, you’ll need hardware that can read chip cards, magnetic stripe cards, and contactless payments. Modern credit card terminals often support tap-to-pay transactions from both physical cards and mobile wallets, giving customers multiple ways to pay.
Business bank account
Finally, you’ll need a business bank account where your payment processor can deposit your funds after transactions settle. Keeping business and personal finances separate also makes bookkeeping, tax preparation, and cash flow management much easier.
Types of small business payment processing
Not every business accepts payments the same way, and your payment processing setup should reflect how your customers prefer to buy. A retail store has different needs than a contractor who works on-site or a software company with monthly subscriptions. Fortunately, modern payment providers support a wide range of payment methods, making it easy to meet customers wherever they are.
In-store payments
In-store payment processing is designed for businesses with a physical location. Customers can tap, insert, or swipe their cards using a payment terminal or POS system. Most modern hardware also accepts contactless cards and mobile wallets, helping speed up checkout and reduce wait times.
Online payments
If you sell through an ecommerce website, online payment processing lets customers securely complete purchases without visiting a physical store. Payments are handled through a payment gateway, which encrypts card information before sending it for authorization. Many providers also support one-click checkout and digital wallets to reduce cart abandonment.
Mobile payments
Mobile payment processing is ideal for businesses that don’t operate from a fixed location. Contractors, food trucks, pop-up shops, market vendors, and service professionals can accept payments using a smartphone or tablet paired with a mobile card reader. Some solutions even allow businesses to accept contactless payments directly on a compatible smartphone.
Phone payments
Businesses that take orders over the phone can process payments through a virtual terminal. Instead of presenting a physical card, the customer provides their payment information, which an employee enters into a secure web-based payment portal. This option is common for service businesses, reservations, and mail-order sales.
Invoice payments
Many payment platforms allow businesses to create and send digital invoices that customers can pay online using a credit card, debit card, ACH transfer, or other supported payment method. This streamlines collections while giving customers more flexibility in how they pay.
Recurring billing
Businesses with memberships, subscriptions, or ongoing services can automate recurring payments. Instead of requesting payment every billing cycle, the payment processor securely stores the customer’s payment credentials and charges them according to a predefined schedule.
Buy now, pay later
Buy now, pay later (BNPL) services let customers split purchases into several installments while businesses receive payment upfront, less any applicable fees. Offering BNPL at checkout can increase conversion rates and encourage higher average order values, especially for larger purchases.
Tap to Pay on iPhone and Android
Tap to Pay technology turns a compatible smartphone into a payment terminal, allowing businesses to accept contactless cards and digital wallets without additional hardware. It’s a convenient option for small businesses that want a simple, portable way to accept in-person payments while keeping equipment costs low.
What are merchant services for small business?
Merchant services are the collection of tools and services that allow a business to accept, process, and manage electronic payments. While payment processing is the core function, merchant services typically include much more than simply moving money from a customer’s account to yours.
A merchant services provider may offer payment processing, merchant accounts, payment gateways, POS systems, card terminals, invoicing, recurring billing, fraud protection, chargeback management, reporting tools, and customer support through a single platform. Some providers also offer value-added services like inventory management, ecommerce integrations, customer loyalty programs, and business financing.
Merchant services vs payment processing
|
Feature |
Merchant services |
Payment processing |
|
What it is |
A broad suite of payment products and business services |
The technology that authorizes, routes, and settles card transactions |
|
Primary purpose |
Help businesses accept, manage, and optimize payments |
Move payment information and funds securely between parties |
|
Includes payment processing? |
Yes |
N/A |
|
Merchant account |
Often included |
Not always |
|
Payment gateway |
Often included |
May connect to one, but isn’t the gateway itself |
|
POS software and hardware |
Often included |
Not typically |
|
Reporting and analytics |
Usually included |
Limited or transaction-focused |
|
Fraud and chargeback tools |
Often included |
May provide basic fraud screening |
|
Customer support |
Covers your overall payments setup |
Focuses on transaction processing issues |
|
Best for |
Businesses looking for an end-to-end payment solution |
The core function that enables electronic payments |
|
Example |
A provider that offers payment processing, POS software, invoicing, terminals, reporting, and support |
The system that approves a customer’s card payment and transfers funds to your business |
The terms merchant services and payment processing are often used interchangeably, but they aren’t quite the same thing. Payment processing is one piece of merchant services, while merchant services is the broader package of products and tools that help businesses accept and manage payments.
Payment processing
Payment processing is the technology that authorizes, routes, and settles electronic payments. Every time a customer taps a card, checks out online, or pays with a mobile wallet, the payment processor securely communicates with the card network and banks to approve the transaction and transfer funds.
Without payment processing, businesses wouldn’t be able to accept credit card or digital payments.
Merchant services
Merchant services include payment processing, but they also cover the additional products and support businesses need to run their payment operations. Depending on the provider, merchant services may include:
- Merchant accounts
- Payment gateways
- POS systems and card readers
- Online invoicing
- Recurring billing
- Fraud prevention tools
- Chargeback management
- Reporting and analytics
- Customer support
Some providers bundle these services into a single platform, making it easier to manage payments from one place.
Which one do you need?
The answer is usually both. Every business that accepts credit cards needs payment processing, but most businesses also benefit from the broader set of merchant services that simplify daily operations. When comparing providers, look beyond processing rates and consider the full package of tools, integrations, support, and reporting features you’ll rely on as your business grows.
Types of payment processors
Not all payment processors operate the same way. Some provide dedicated merchant accounts, while others simplify onboarding by grouping businesses under a shared account. Understanding the different types can help you choose a provider that fits your business model and growth plans.
Traditional merchant account providers
These providers create a dedicated merchant account for your business. They often offer customized pricing, greater account stability, and advanced payment features, making them a good fit for established or higher-volume businesses.
Payment facilitators (PayFacs)
PayFacs streamline onboarding by allowing businesses to process payments under a master merchant account. They’re known for fast approvals and simple setup, making them popular with startups and small businesses.
Independent sales organizations (ISOs)
ISOs partner with acquiring banks and payment processors to sell merchant services. Many offer personalized support, competitive pricing, and access to multiple processing solutions rather than a single platform.
Payment service providers (PSPs)
PSPs combine payment processing with tools like payment gateways, invoicing, and ecommerce integrations. They’re designed to make accepting payments as simple as possible, particularly for online businesses.
Banks
Some banks offer merchant services directly or through partnerships with payment processors. While this can simplify banking and payments under one provider, the available features and pricing may vary.
How much does small business credit card processing cost?
There’s no one-size-fits-all cost for credit card processing. Your total expense depends on your pricing model, transaction volume, payment methods, and provider. Some fees are fixed by the card networks, while others are set by your payment processor.
Interchange fees
Interchange fees are paid to the customer’s card-issuing bank and typically make up the largest portion of processing costs. They vary by card type and transaction method and aren’t negotiable.
Assessment fees
Assessment fees are charged by card networks like Visa and Mastercard. They’re small, apply to every transaction, and can’t be negotiated.
Processor markup
This is the fee your payment processor charges for its services. Unlike interchange and assessment fees, processor markups are often negotiable.
Monthly fees
Some providers charge monthly fees for account maintenance, software, or support, while others include these costs in their pricing.
PCI fees
Some processors charge for PCI compliance, though others include it at no additional cost.
Gateway fees
Businesses accepting online payments may pay gateway fees, unless the gateway is included in an all-in-one platform.
Chargeback fees
If a customer disputes a transaction, your processor may charge a fee to handle the case.
Terminal costs
Businesses accepting in-person payments typically need a card reader or payment terminal, which can be purchased outright or bundled with your provider.
Equipment leases
Leasing payment hardware lowers upfront costs but is often more expensive over time than buying the equipment outright.
Pricing models
The pricing model you choose has a big impact on your overall processing costs. The right option depends on your monthly card volume, average transaction size, and how predictable your sales are. Here’s how the most common pricing models compare.
Flat-rate pricing
With flat-rate pricing, you pay the same rate for every transaction, regardless of the card used. It’s simple, predictable, and easy to understand, making it a popular choice for startups and businesses with lower processing volume. The tradeoff is that you may pay more than necessary as your business grows.
Interchange-plus
Interchange-plus pricing separates wholesale interchange and assessment fees from your processor’s markup. Because costs are broken out individually, it’s one of the most transparent pricing models available. Businesses with moderate to high processing volume often save money with interchange-plus compared to flat-rate pricing.
Subscription pricing
Also called membership pricing, this model charges a monthly subscription fee plus a small per-transaction fee, while passing interchange costs through at cost. Although there’s a monthly fee, businesses with higher transaction volume often find subscription pricing delivers the lowest overall processing costs. Stax Pay is a good example of subscription pricing.
Tiered pricing
Tiered pricing groups transactions into categories such as qualified, mid-qualified, and non-qualified, with each tier carrying a different rate. While it can appear straightforward, it’s often the least transparent pricing model because it’s difficult to predict how transactions will be classified. Many businesses prefer flat-rate, interchange-plus, or subscription pricing for greater pricing clarity.
How to choose the right payment processor
The best payment processor isn’t necessarily the one with the lowest advertised rate. A provider that’s perfect for a coffee shop processing a few thousand dollars a month may not be the best fit for a growing ecommerce brand or a business with recurring billing. As you compare providers, look at the complete picture, not just the processing fee.
Monthly volume
Your processing volume influences which pricing model makes the most sense. Businesses with lower volume often prioritize simplicity, while higher-volume businesses can benefit from more customized pricing.
Average ticket size
Businesses with larger average transactions may benefit from pricing models that minimize percentage-based fees. If you process many small purchases, look for competitive per-transaction costs as well.
In-person vs online
Consider where most of your sales happen. Brick-and-mortar businesses need reliable terminals and POS software, while online businesses should prioritize secure payment gateways, ecommerce integrations, and a smooth checkout experience. If you sell through multiple channels, look for an omnichannel solution that keeps everything connected.
Industry
Some payment processors specialize in certain industries, such as restaurants, healthcare, retail, or professional services. Choosing a provider that understands your business can give you access to industry-specific features and compliance tools.
Integrations
Your payment processor should work seamlessly with the software you already use, whether that’s your ecommerce platform, accounting software, CRM, or POS system. Strong integrations reduce manual work and help keep your data in sync.
Customer support
When payment issues arise, fast support matters. Look for providers that offer responsive customer service through multiple channels and have a reputation for resolving issues quickly.
Contract terms
Review the fine print before signing. Some providers require long-term contracts, early termination fees, or equipment leases, while others offer month-to-month agreements with greater flexibility.
Pricing transparency
Don’t focus on the advertised rate alone. Ask for a clear breakdown of processing fees, monthly charges, equipment costs, and any additional fees so you know what you’ll actually pay.
Funding speed
Cash flow is critical for small businesses. Some providers offer next-day or even same-day funding, helping you access your revenue sooner.
Security
Your payment processor should support PCI compliance, encryption, tokenization, and fraud prevention tools to help protect customer data and reduce the risk of fraudulent transactions.
Partnering with a secure processor isn’t just a technical requirement—it’s vital risk management for your bottom line. Official data from the Federal Trade Commission (FTC) shows that reported consumer fraud losses reached $12.5 billion, with credit card fraud topping the list of identity theft categories, generating over 449,000 official reports in a single year.
Final words
Choosing a payment processor is about more than accepting credit cards. The right provider should make it easier to run your business, support the way you sell, and give you room to grow without adding unnecessary complexity or costs. By comparing pricing, features, support, and flexibility, you can find a solution that fits your business today and continues to meet your needs as they evolve.
