abhishek_docs | Stripe Developers | Page 1

cursive trailBOT Oct 2, 2025, 11:04 AM

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indigo cosmos Oct 2, 2025, 11:06 AM

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hi there!

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is your goal to update an existing Subscription? or create a new Subscription that you know will upgrade mid-cycle?

lunar tundra Oct 2, 2025, 11:14 AM

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i want to update existing subscription with proration mid-cycle.

Scenario:

User has an active subscription: 10 mailboxes (monthly) + 2 domains (yearly)
User wants to upgrade mid-cycle: add 5 more mailboxes + 1 new domain
I need them to pay BEFORE the subscription updates (not after)

indigo cosmos Oct 2, 2025, 11:15 AM

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Checkout Sesison is only for creating brand new subscriptions, not updating them. but once you have a Subscription, then you can update it yes. This is explained here: https://docs.stripe.com/billing/subscriptions/change-price

lunar tundra Oct 2, 2025, 11:19 AM

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the issue is that when I update the subscription per those docs:

stripe.subscriptions.update(subscriptionId, {
  items: [
    { id: mailboxItemId, quantity: 15 },  // Update from 10 to 15
    { price: newDomainPriceId, quantity: 1 }  // Add new domain
  ],
  proration_behavior: "always_invoice"
})

The subscription updates immediately (user gets 15 mailboxes right away), and then invoices are created for them to pay later.
My problem: I need the opposite flow - payment first, then subscription update.
Is there a way to:

Generate the prorated invoice WITHOUT updating the subscription yet
User pays the invoice
Subscription updates only after invoice.payment_succeeded webhook

#abhishek_docs