Toss Payments

Toss Payments payment window integration guide

1. Configure Toss Payments PG settings

Refer to the Toss Payments settings page to configure the PG settings.

2. Request payment

To open the payment window, call JavaScript SDK IMP.request_pay(param, callback).

In PC browsers, callback is invoked after calling IMP.request_pay(param, callback). In mobile browsers, the page is redirected to m_redirect_url.

Javascript SDK
IMP.request_pay( { pg: "uplus", pay_method: "card", merchant_uid: "{Merchant created Order ID}", // Example: order_no_0001 name: "Order name: Test payment request", amount: 14000, buyer_email: "", buyer_name: "John Doe", buyer_tel: "010-1234-5678", buyer_addr: "Shinsa-dong, Gangnam-gu, Seoul", buyer_postcode: "123-456", m_redirect_url: "{Mobile only - URL to redirect to after payment approval}", // Example: }, function (rsp) { // callback logic //* ...Omitted... *// }, );

Key parameter description

pg * string

PG code

  • If not specified and this is the only PG setting that exists, default PG is automatically set.
  • If there are multiple PG settings, set to uplus.

pay_method * string

Payment method code

Payment method codes

  • card (credit card)
  • trans(instant account transfer)
  • vbank(virtual account)
  • phone(mobile micropayment)

merchant_uid * string

Order ID

Must be unique for each request.

amount * integer

Payment amount

Must be an integer (not string).

escrow`` boolean

Ecrow option

3. Additional functions

{ "display": { "card_quota": [6], // Display up to 6 months installment plans "only_installment": true // Disable immediate pay option } }


  • card_quota :

    • Enable only specified installment months
    • []: Only immediate pay
    • 2,3,4,5,6: immediate, 2, 3, 4, 5, 6 month installment plans
  • If only_installment: true, only shows specified months in card_quota.\

Installment plan option is available only for KRW 50,000 or more.

Hub-type simple payment

Simple payments (Kakao Pay, Naver Pay, etc.) are not supported in Toss Payments payment window.