Payment processors explained
What a payment processor does, how it differs from a payment gateway, and how to choose the right one for your business.
You cannot accept card payments without a payment processor. But what does that term actually mean, and how is it different from a "gateway" or a "merchant account"? This guide sorts it all out.
Quick summary
A payment processor handles the technical and financial work of moving money from a customer's card to your bank account. Modern all-in-one processors like Stripe and PayPal bundle everything you need into a single product — no separate gateway or merchant account required.
What a payment processor does
Think of a payment processor as the backbone of every card transaction. It does three things:
- Routes the transaction — sends the charge request to the right card network (Visa, Mastercard, etc.) and receives the response.
- Manages the money — holds authorized funds, batches settlements, and pays you out after deducting fees.
- Handles risk and fraud — screens transactions for suspicious patterns and flags or blocks potential fraud.
Gateways vs processors vs merchant accounts
These three terms appear together often, and they can be confusing. Here is the difference:
| Term | What it is |
|---|---|
| Payment gateway | The secure connection between your website and the processor. It encrypts card data and sends it on. |
| Payment processor | The company that authorizes transactions and manages the money flow. |
| Merchant account | A special bank account that holds your funds during settlement before transferring to your regular business bank. |
With older payment setups, you had to set these up separately — three different vendors, three contracts.
With modern all-in-one processors like Stripe, PayPal, and Square, all three roles are bundled together. You sign up for one account and get everything.
Most small businesses use an all-in-one processor
Unless you process very high sales volumes (typically over $1 million per year), an all-in-one processor is simpler and often cheaper. The per-transaction fee is slightly higher than with a traditional merchant account, but there are no monthly fees or setup costs.
Types of payment processors
All-in-one processors
These combine gateway, processor, and merchant account. They are easy to set up and work with most website platforms.
- Stripe — the most popular choice for websites and e-commerce stores. Excellent documentation and deep integrations with WordPress, WooCommerce, Webflow, and more.
- PayPal — widely recognized by customers and easy to add as a second checkout option.
- Square — popular for businesses that also sell in person.
Traditional setups
Large businesses sometimes use a separate gateway (such as Authorize.Net) combined with a dedicated merchant account from a bank or ISO (independent sales organization). This can be cost-effective at high volumes but requires more administration.
What to look for when choosing a processor
When evaluating options, consider these factors:
Fees. Compare the per-transaction rate, any monthly fees, and how fees change with refunds or chargebacks. See Payment fees explained for a full breakdown.
Payout speed. How quickly does money reach your bank? Standard is two business days for Stripe. Faster options usually cost extra.
Platform compatibility. Make sure the processor integrates with your website platform. Stripe and PayPal work with WooCommerce, Webflow, Squarespace, and most other platforms.
Customer recognition. PayPal's checkout button is familiar to many shoppers. Stripe-powered checkouts look professional but are less recognizable by brand.
International support. If you sell to customers in other countries, check whether the processor accepts foreign cards and handles currency conversion.
Dispute handling. Look for clear documentation on how chargebacks are managed. See Chargebacks & disputes explained.
Which processor does Chykalophia recommend?
For most of our clients, we recommend Stripe as the primary payment processor. It integrates smoothly with WooCommerce and most other platforms we build on, and it provides detailed dashboards for tracking revenue, refunds, and payouts.
We often add PayPal as a second checkout option, since many customers prefer to pay via PayPal. The two can run side by side.
See Stripe basics for business owners and PayPal basics for business owners for more detail on each.
Common questions
Related guides
- How online payments work
- Stripe basics for business owners
- PayPal basics for business owners
- PayPal vs Stripe
- Payment fees explained
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