Introduction

Sezzle Virtual Card allows merchants to:
- Accept Sezzle payments as credit card transactions.
- Seamlessly integrate with existing credit card forms at checkout.
The virtual card is issued by Sezzle and charged through your existing payment processor (e.g., Stripe, Cybersource, Braintree). Your systems will handle the card data to process the charge.
For API-related questions, contact the Sezzle team via the Merchant Help Request form.
An approved Sezzle account is required to begin integration; sign up if you don’t have one.
Endpoints in this guide require an authentication token.

You can test your integration with Sezzle using Sezzle sandbox test environment.

This product is currently only available in the United States. Support for Canada coming soon.

Integration Options

	Virtual Card SDK	Manual Integration
Best for	Most merchants — fastest setup	Merchants needing full control
How it works	Drop-in SDK handles checkout popup/iframe and card data delivery	You implement the `postMessage` listener and card session API calls
Tokenization support	Yes — use `card_response_format: "token"` to receive a token instead of raw card data	Not available — card data is always delivered to your frontend

PCI DSS consideration: Because you will receive and process virtual card data through your payment gateway, ensure your integration aligns with your current PCI compliance level. The SDK’s tokenization option keeps card data out of the browser, which can reduce your PCI scope.