--- updatedAt: 2025-11-13T14:20:09.000Z agentTools: siteIndex: https://docs.affirm.com/llms.txt projectIndex: https://docs.affirm.com/payments/llms.txt --- # Create a checkout object ## Checkout properties
Attributes Data type Description
**merchant** required *object* Merchant specific information. See [details](https://docs.affirm.com/developers/reference/the-merchant-object).
**shipping** required *object* The [shipping details](https://docs.affirm.com/affirm-developers/reference/shipping-billing-object)
**billing** *object* The [billing details](https://docs.affirm.com/affirm-developers/reference/shipping-billing-object)
**items** required *Array* An array of [item](https://docs.affirm.com/payments/reference/the-item-object).
**discounts** *object* A list of [discount](https://docs.affirm.com/developers/reference/the-discount-object). Each discount must have their discount code.
**metadata** *object* See [details](https://docs.affirm.com/developers/reference/the-discount-object).
**order\_id** *string* The merchant order id. This is stored for your own future reference.
**financing\_program** *string* A financing program applied on this checkout.
**shipping\_amount** *integer* The total shipping amount in cents.
**tax\_amount** *integer* The total tax amount in cents.
**total** required *integer* The total amount of the checkout in cents.
**checkout\_expiration** *timestamp* A date-timestamp of when the `checkout_id` will expire. * ISO timestamp format * No milliseconds