International merchants guide

You're looking at it! Unfortunately the English documentation only partially covers our SDKs and APIs. We recommend using Google Translate on Chrome in the Korean documentation. If you need further help, feel free to reach out on Discord or via email.

Yes, a Korean payment method such as card or bank account is necessary for authentication.

In SDK version 1, you may use the _skipAuth parameter as below to simulate authentication without a Korean payment method.

In SDK version 2, you may use the sandbox parameter as below to simulate authentication without a Korean payment method.

Use the request header Accept-language : en-US to receive all successful and error responses API responses in English.

Yes. Credit card installment plans are available to customers for payments over 50,000 KRW.

When using Toss Payments systems, all your payments are automatically captured everyday at midnight. You may also use manual capture and request it yourself. Toss Payments does not support parital capture.

Yes, the refund window for card payments is up to a year after the payment. If the payment has already been settled, the refund will be deducted from the upcoming settlement. Partial refunds are also supported for up to a year.