As customers upgrade or change their subscriptions with you, providing a preview of their updated charges is a great way to mitigate surprises and keep customers happy! Chargify's latest API enhancement enables you to do just that. The 'Preview Migration' API call allows you to pull the prorated new charge amount based on a specified date (within the current billing period). Simply pass in the future date and get the corresponding prorated adjustment, charge, payment and credit applied values.

For more information on product migrations via the API, see our API documentation here>