Pre-filled checkout fields

When you share a product in Lemon Squeezy, a link is generated for you that you can share in emails, newsletters, social media, etc. or you can use the Checkout Overlay to embed the link on your website using HTML. In both cases, the link can be customized by adding extra parameters to the query string to prefill the fields in the checkout when it loads.

The basic structure of a checkout link is as follows:


For example, it might look like

How to Prefill Customer Data

If you already know some of your customer data before sending them to the checkout, you can add a few extra parameters to prefill customer data to make the checkout process more straightforward.

&checkout[name]=Luke Skywalker

Note that the checkout[billing_address][country] should be in a ISO 3166-1 alpha-2 format. Note that all data will be sanitized and validated before the checkout is submitted.

List of Available Parameters

ParamaterDescriptionExample Value
checkout[name]Customer’s full nameLuke Skywalker
checkout[billing_address][country]Billing address countryUS
checkout[billing_address][state]Billing address stateNY
checkout[billing_address][zip]Billing address ZIP/postal code10038
checkout[tax_number]Business tax numberGB123456789
checkout[discount_code]Discount code10PERCENTOFF