proration amount settlement

[Shubham Bhagat]

Hi,
I am facing issue where i am creating a subscription like basic plan and when user want to upgrade to pro plan we create a new subscription ,as we return a session to frontend and everything handle frondend and once payment is done we use webhook to update our system.

So when pro plan is purchase a new session is created and then user do the payment , after that when webhook is called we delete the old subscription , but to manage the proration amount of plan cancelled to new pro subscription bought ?

[Karl Reid]

Hi there,

My understanding is that you are creating a new CheckoutSession object in `mode:"subscription"` and creating a whole separate new Subscription for the pro plan, and then cancelling the Customer's existing Subscription.

What I'd suggest doing instead is updating the existing Subscription, not creating a new one. That makes it much easier to handle your use case of charging a prorated amount.

The easiest option would be to let the customer make the change in the Customer Portal [0] [1] . You can configure that the update will calculate proration, and the portal will handle the payment processing for any invoice created as a result.

Alternatively it's also possible to update the subscription directly [2] , where you can use the `proration_behavior:"always_invoice"` parameter to force calculation of proration and charging the customer's default payment method for the change.

If you have any more questions or problems in implementing this I'd suggest opening a support case at https://support.stripe.com/?contact=true with the code you're using and example Subscription IDs `sub_xxx` and we can help!

I hope this helps but please do not hesitate to get back to me if you need more details.
All the best,
Kyle

[0] - https://docs.stripe.com/customer-management

[1] - https://docs.stripe.com/customer-management/configure-portal  

[2] - https://docs.stripe.com/billing/subscriptions/upgrade-downgrade