Key takeaways
How gateway fees add up
Gateway cost = monthly gateway fee + (transactions × gateway per-item fee)
All-in cost = processing fees + gateway cost
Effective rate = all-in cost ÷ total card volume
Worked example (illustrative numbers)
An online store with a separate gateway (illustrative numbers):
- Card volume: $30,000 across 600 transactions
- Processing fees: $780
- Gateway: $20 monthly + $0.10 × 600 = $80
- All-in cost: $780 + $80 = $860
- Effective rate: $860 ÷ $30,000 = 2.87%
Illustrative numbers only. Your costs depend on your provider, card mix and how you accept payments.
What a payment gateway does
A gateway handles the card-not-present side of payments:
- Captures card or bank details on a checkout page, invoice link or virtual terminal
- Encrypts or tokenizes the data so you don't store card numbers
- Sends the authorization request and returns approve or decline
- Stores tokens for recurring billing and card-on-file, with customer consent
- Offers fraud tools such as address and security-code checks
What a payment processor does
The processor and its acquiring bank route authorizations to the card networks, settle batches, calculate fees and deposit funds into your business account. In-person terminals connect to the processor directly; online payments usually pass through a gateway first.
Payment gateway for small business: do you need one?
You likely need a gateway if you sell online, send invoice payment links, take payments over the phone or run recurring billing. A counter-only business with terminals may not. Ask whether your accounting or point-of-sale software requires a specific gateway connection before you choose.
Common questions
What is a payment gateway?
It's the secure technology that sends payment details from an online checkout, invoice or virtual terminal to the processor for approval.
Do I need both a gateway and a processor?
For online, invoiced or phone payments, usually yes, though many providers bundle them in one account.
What are typical payment gateway fees?
Gateways commonly charge a monthly fee, a per-transaction fee or both, and some include them in processing pricing. Get the amounts in writing and include them in your effective rate.
Can I switch processors and keep my gateway?
Sometimes. Some gateways work with several processors; others are tied to one. Ask before you move, especially if you store cards for recurring billing.
Does a gateway make me PCI compliant?
A gateway that tokenizes card data can reduce your compliance scope, but you still have PCI responsibilities. Ask your provider which validation applies to you.
Know your effective rate
A payments specialist can walk through a recent statement with you, explain the pricing model and whether a change fits how you get paid.
Request a payment reviewEstimates only. Results vary. No guarantee of approval, rates or savings.
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