Payment Gateway
A payment gateway is the service that securely carries checkout payments from the store to card networks and banks for approval.
What a payment gateway is
A payment gateway is the service that carries a checkout payment from the store to the card networks and banks: it encrypts the details, requests authorization, and returns approved or declined.
Modern providers usually bundle the gateway with processing, payouts, and fraud tools in one account.
Why the payment gateway matters
It decides which payment methods you can accept, what each sale costs in fees, how smooth the card form feels, and how many legitimate orders get declined.
What to compare between gateways
- Fees: per-transaction rates, monthly costs, currency conversion
- Payment methods: cards, wallets, BNPL, local options
- Checkout experience: hosted, embedded, or one-tap
- Fraud screening and dispute tooling
Frequently asked questions
Gateway vs payment processor: what’s the difference?
The gateway is the secure front door collecting the payment; the processor moves the money behind it. Most modern providers are both, which is why the terms blur.
Why do legitimate payments get declined?
Overcautious fraud filters, mismatched billing details, or issuer-side rules. Watching the decline rate and tuning filters recovers real revenue quietly lost.
Related terms
Digital Wallet · Buy Now, Pay Later · Checkout Optimization · Local Payment Methods