API Overview

Unified Checkout Developer Guide
- Recent Revisions to This Document

Introduction to Unified Checkout

Unified Checkout Flow
- Enabling Unified Checkout in the Business Center

Server-Side Set Up
- Capture Context

Client-Side Set Up
- Loading the JavaScript Library and Invoking the Accept Function
  - JavaScript Example: Initializing the SDK
  - JavaScript Example: Displaying the Button List
  - JavaScript Example: Client-Defined Trigger for Click to Pay or PAN Entry
  - JavaScript Example: Processing a Payment
- Complete Integration Examples
  - JavaScript Example: Setting Up with Full Sidebar
  - JavaScript Example: Setting Up with the Embedded Component

Transient Tokens
- Transient Token Format
  - Example: Transient Token Format
- Token Verification
- Dual-Branded Cards

Authorizations with a Transient Token
- REST Example: Requesting an Authorization with a Transient Token

Capture Context API
- Features
- Client Version History
- Requesting the Capture Context
  - Required Fields for Requesting the Capture Context
  - REST Example: Requesting the Capture Context
- Validating the Capture Context

Payment Details API

JavaScript API Reference
- Class: Accept
- Class: AcceptError
- Class: UnifiedPayments

Unified Checkout Configuration
- Webhooks Support
- Enable Digital Payments
  - Enrolling in Apple Pay
  - Preparing a Device for Testing Apple Pay on Unified Checkout
  - Enabling Click to Pay
    - Set Up Customer Authentication for Visa
  - Enrolling in Google Pay
  - Managing Google Pay Authentication Types
  - Enrolling in Echeck/ACH Services
  - Enrolling in Alternative Payment Methods
- Manage Permissions
  - Managing Permissions as a Direct Merchant
  - Managing Permissions as a Portfolio Administrator

Test Your Unified Checkout Configuration
- Test Payment Details
- Customer Authentication

Payment Methods
- Cards
- Online Bank Transfers
  - iDeal
  - Multibanco
  - Example: Verify Status for Online Bank Transfers
- Buy Now, Pay Later
  - Afterpay
  - Captures
    - Required Fields for Capturing an Authorization
    - REST Example: Capturing an Authorization

Unified Checkout Appendix
- Unified Checkout UI
  - Apple Pay UI
  - Click to Pay UI
  - Google Pay UI
  - Manual Payment Entry UI
  - Pay with Bank Account UI
  - Paze UI
- JSON Web Tokens
- Unified Checkout Integration Examples
  - Unified Checkout with Authorization
    - Example: Unified Checkout with Authorization
  - Unified Checkout with Sale
    - Example: Unified Checkout with Sale
  - Unified Checkout with Sale and Decision Manager
    - Example: Unified Checkout with Sale and Decision Manager
  - Unified Checkout without Service Orchestration
    - Example: Unified Checkout without Service Orchestration
  - Echeck Payment with a Transient Token
    - Example: Echeck Payment with a Transient Token
- Supported Countries for Digital Payments
  - Supported Countries for Digital Payments A-D
  - Supported Countries for Digital Payments E-K
  - Supported Countries for Digital Payments L-R
  - Supported Countries for Digital Payments S-Z
- Supported Locales
- Reason Codes

VISA Platform Connect: Specifications and Conditions for Resellers/Partners

On This Page

Buy Now, Pay Later

Buy Now, Pay Later payment methods enable customers to purchase goods or services immediately and pay in installments over time. With Buy Now, Pay Later, you are paid immediately and in full, while your customers pay nothing or only a portion of the total at the time of purchase. The remaining balance is typically spread over equal, often interest-free, payments.

Buy Now, Pay Later is increasingly popular for both online and in-store purchases and is supported by providers such as Klarna, Afterpay, Affirm, and PayPal.

This is how Buy Now, Pay Later works:

Buy Now, Pay Later

The customer chooses their Buy Now, Pay Later payment method during checkout.

The customer chooses how much they want to pay, such as nothing, installments, or the total amount.

The unpaid amount is divided into equal installments that are paid over a fixed amount of time.

You receive the full payment after the customer completes checkout, and the Buy Now, Pay Later provider collects the installment payments from your customer.

Unified Checkout supports this Buy Now, Pay Later payment method:

Afterpay/Clearpay: Afterpay is a Buy Now, Pay Later service that allows customers to purchase items immediately and pay for them in four interest-free installments over a period of 6 weeks. Afterpay is also known as Clearpay in the UK, and Cash App Afterpay in the US.
For more information, see the Afterpay and Clearpay Developer Guide
.

Buy Now, Pay Later Payment Method Support
Payment Method	Capture Context allowedPaymentTypes	Capture Context completeMandate.type	Separate Capture?	Payment Confirmation	Customer ISO Country Code	Customer ISO Currency Code
Afterpay	AFTERPAY	CAPTURE	No	Immediate	CA	CAD
		AUTH or PREFER_AUTH	Yes	Delayed	CA	CAD
		CAPTURE	No	Immediate	AU	AUD
		AUTH or PREFER_AUTH	Yes	Delayed	AU	USD
		CAPTURE	No	Immediate	NZ	NZD
		AUTH or PREFER_AUTH	Yes	Delayed	NZ	NZD
Cash App Afterpay		CAPTURE	No	Immediate	US	USD
Cash App Afterpay		AUTH or PREFER_AUTH	Yes	Delayed	US	USD
Clearpay		CAPTURE	No	Immediate	GB	GBP
Clearpay		AUTH or PREFER_AUTH	Yes	Delayed	GB	GBP

For information on ISO country codes, see ISO Standard Country Codes.

For information on ISO currency codes, see ISO Standard Currency Codes.

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