Knippy

[fleet kelp]

You choose what to do with the remaining time. You can charge for a proration as well as cancel immediately without a refund: https://stripe.com/docs/billing/subscriptions/cancel?dashboard-or-api=api#prorating-and-usage-based-billing

[soft pivot]

There is no option to specify that in the customer.delete() endpoint -> https://stripe.com/docs/api/customers/delete?lang=node

so if you delete a customer, it will automatically cancel their subscriptions without you needing to cancel them individually, but the docs do not say how it deals with the "remaining time" aspect of the deletion that you'd normally specify when you cancel a subscription

[fleet kelp]

Correct, you have to cancel the Subscription itself if you want to be able to prorate: https://stripe.com/docs/api/subscriptions/cancel#cancel_subscription-prorate

so if you delete a customer, it will automatically cancel their subscriptions without you needing to cancel them individually, but the docs do not say how it deals with the "remaining time" aspect of the deletion that you'd normally specify when you cancel a subscription
It cancels without a proration, I believe