jayy-proration-calc | Stripe Developers | Page 1

rapid thornBOT Feb 13, 2024, 3:03 PM

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delicate forum Feb 13, 2024, 3:06 PM

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Hello
I don't believe the API supports that today unfortunately. You can only preview prorations for an invoice (not custom amounts)

silent ledge Feb 13, 2024, 3:07 PM

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alright.. and is it possible to know how prorations are actually calculated? to the second, minute hour in stripe?

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atleast i can then do the calculations approximately to display xD

delicate forum Feb 13, 2024, 3:12 PM

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Hmm, let me see if we have any docs on this

silent ledge Feb 13, 2024, 3:13 PM

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alright 🙂

delicate forum Feb 13, 2024, 3:21 PM

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So we calculate by the second.
https://stripe.com/docs/billing/subscriptions/prorations

The prorated amount is calculated as soon as the API updates the subscription. The current billing period’s start and end times are used to calculate the cost of the subscription before and after the change.

So, first we calculate the time fraction from the proration periods and the initial subscription periods:
(see first screenshot)

Then, the calculated time fraction is multiplied by the total amount for each price
(see second screenshot)

silent ledge Feb 13, 2024, 3:21 PM

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oh awesome! Thank you!

delicate forum Feb 13, 2024, 3:22 PM

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NP! 🙂 Happy to help

#jayy-proration-calc