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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 — captures the payment, waits for it to settle into your balance, 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, an all-in-one processor is simpler and often cheaper. The per-transaction fee is a flat published rate rather than something you negotiate, and Stripe's standard pricing carries no setup fee and no monthly fee. Processors offer custom pricing to businesses with large volumes, so if you think you have reached that point, ask them.

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 — a common default for websites and e-commerce stores. Detailed documentation, an official WooCommerce extension, and one of the processors you can connect on Webflow and Squarespace.
PayPal — widely recognized by customers and easy to add as a second checkout option. Also available on WooCommerce, Webflow and Squarespace.
Square — often chosen by businesses that also sell in person. On Squarespace, for example, Square is offered for in-person Point of Sale only.

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? In the US, Stripe's standard settlement timing is two business days, after which payouts follow your account's schedule. Faster options usually cost extra, and your first payout takes longer than the rest — Stripe says it typically schedules that one to complete within 7–14 days of your first live payment.

Platform compatibility. Make sure the processor integrates with your website platform. Stripe and PayPal are the two payment providers Webflow Ecommerce supports, both appear on Squarespace's list of processors you can connect, and both have official WooCommerce extensions. They work with most other platforms too.

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.

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

Do I need to set up a separate merchant account?

With modern processors like Stripe and PayPal, no. They include a managed merchant account. You only need to apply separately for a merchant account if you are working with a traditional bank-based setup at high transaction volumes.

Can I use more than one payment processor?

Yes. Many stores accept both Stripe (for card payments) and PayPal simultaneously. Customers see both options at checkout and choose their preference.

What information does a processor need to approve my account?

Typically: your legal business name, address, tax ID (in the US, an EIN, or an SSN or ITIN), bank account details for payouts, and some information about what you sell. Low-risk businesses are often approved quickly, but not always — some are asked for more detail first. Some business types are restricted or not accepted at all. Stripe publishes the full list, which includes adult content, gambling, debt settlement, and unsafe nutraceuticals as prohibited, and legal firearms as restricted with limited availability. Read Stripe's prohibited and restricted businesses list before you assume you qualify.

What happens if my processor closes my account?

This is rare but can happen if your dispute rate climbs too high or if your business type breaches their terms. Your funds can be held for a period before being released — how long is set by your processor's agreement, so read it rather than relying on a number you saw online. Keeping your dispute rate low and following your processor's terms is the best prevention.

Need a hand?

If you're stuck, email support@chykalophia.com and we'll help. Include your website address and a screenshot if you can.

Payment processors explained