Payment gateways in USA

Adyen is a unified global payment solution, enabling businesses to accept local and international payments with advanced fraud protection

Affirm lets US customers pay over time in installments while you receive the full amount upfront (minus Affirm's fee). You need an approved Affirm merchant account — apply at affirm.com/business with a US business entity and US bank account, then copy the public and private API keys from the Affirm Merchant Portal (API keys page). USD only; customers without a US mobile number cannot complete an Affirm loan.

Afterpay lets your customers split the payment into four interest-free instalments while you receive the full amount upfront, minus Afterpay's fee. You need an approved Afterpay business account for the US, Canada, Australia or New Zealand (US shoppers see it branded Cash App Afterpay) — apply at afterpay.com, then enter the Merchant ID and Secret Key Afterpay issues. Each account settles in the single currency of its home country, and Afterpay enforces its own per-merchant minimum and maximum order amounts.

Buyers pay with the cards and details already saved in their Amazon account — one of the highest-trust wallets in the US, Europe, UK and Japan. Registration is self-serve in Amazon Pay Seller Central, but travel and tour services are a restricted category that needs Amazon's prior approval before you can take payments (see pay.amazon.com/help/6023). You'll find the Merchant ID, Store ID and API keys under Seller Central → Integration Central.

Accept Apple Pay from customers on Apple devices and Safari

Accept Google Pay from customers on Chrome and Android

Klarna — pay now, pay later, and financing on Klarna's hosted payment page. Requires a direct Klarna merchant account with a signed agreement for each country you enable; the gateway's country must be one of Klarna's purchase countries and the payment currency must be that country's local currency. API credentials (username and password) are generated in the Klarna merchant portal under Settings.

Cryptocurrency gateway with the option of accepting common cards

This huge international payment gateway has support for 200+ countries in 25 currencies

Popular gateway mainly among European and English-speaking countries, accepting common cards and cryptocurrency

Accept credit and debit cards directly on your booking page — customers pay without leaving your site

Venmo lets customers in the United States pay in USD straight from the Venmo app. It runs on your existing US PayPal business account and the same REST Client ID and secret as PayPal — no separate Venmo signup — and the button only appears to eligible US buyers on supported devices.