taxheaven

[stark lantern]

Just to be clear, do you want the customer to be charged $11 immediately/when they make the plan change?

[lyric depot]

Yes

[stark lantern]

So it's not possible to refund for the unused time. If I'm understanding you correctly, I think you want to turn off proration (so they are not credited for the unused time), and also create a separate refund: https://stripe.com/docs/billing/subscriptions/prorations#disable-prorations

[lyric depot]

Ok thank you, is it still possible to only retreive automatically the unused time from the Stripe API for a specific subscription ? As I understand, I have to refund a specific amount, so it would be very useful to get the unused time/corresponding price for that unused time

[stark lantern]

I recommend testing with previewing an upcoming invoice: https://stripe.com/docs/api/invoices/upcoming

This essentially lets you preview a change so you can inspect the proration

If you're not necessarily tied to allowing customers to change plans mid cycle, you could also subscription schedules to change a subscription at the next billing cycle: https://stripe.com/docs/billing/subscriptions/subscription-schedules/use-cases#upgrading-subscriptions

[lyric depot]

I want to allow customers to change plans mid cycle, so, Is it conventional to cancel the current subscription and create a new one as an « upgrade » process ?

[stark lantern]

No, not really typical to do that

I recommend playing around with these features alongside test clocks so you can get an idea for your ideal customer experience: https://stripe.com/docs/billing/testing/test-clocks