LarryUllman/gist:fbe8db2f1ecc6c92e74a

Created July 23, 2014 14:49

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Stripe - Calculate Subscription Proration

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gistfile1.txt

proration cost = (period end - API request time) / (period end - period start) * quantity * plan price

bocharsky-bw commented Oct 31, 2017

What is API request time and how to get it? Is it a time in seconds?

wannymiarelli commented Aug 13, 2018 •

edited

@bocharsky-bw it is the actual time, like date() now() or wathever. As of Stirpe uses unix time you should be able to use it to.

ggcespia commented Jul 14, 2023

I would use this for a yearly subscription: quantity * plan_price * 12 * (period end - Api request time) / (period end - period start)
You compute a ratio of the time left / total time, then multiply that by the annual cost.

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