Disable Prorate

[Andrei Karotki]

Hi Team!

I'm looking for solution to disable prorate behavior during subscription(plan) change.

Exact use case: 

Billing mode is configured IN ADVANCE. Billing period is 30 days.

Recurring change for current plan is 30 USD, for new plan 50 USD.

User would like to perform a plan change with IMMEDIATE effect at 20th day of the cycle.

Current behavior that Killbill generates credit adjustment, e.g. 10 USD for unused period. 

Is it any way to avoid such prorate and credit adjustments during plan change with IMMEDIATE effect?

Regards,

Andrei

[Shaun Forgie]

Hi Andrei,

Use alignment rules to specify when changes are applied. 

See documentation for alignment rules here https://docs.killbill.io/latest/plan_alignment

Rgs

Shaun

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Shaun Forgie [Principal] - Method Maker Ltd
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[Andrei Karotki]

Hi Shaun,
Thanks for sharing the link,

but unfortunately, I didn't find any explanation for prorate here. The link provided mostly refers to the new plan phases and doesn't say anything about the prorating recurring change for the previous period (previous plan).

Trying to bring more clarity:

Current plan period 2025-05-21 - 2025-06-19. Full recurrent change is 14.95. It has been used for 1 day. User requested immediate change to the new plan with recurring charge 21.95.

KillBill calculated prorate according to actually used days. 1/30, which is around 0.5 and then KB made prorated refund (credit adjustment) for unused period "-14.45"

I would like to have an ability for performing immediate plan change, but without prorate and such credit adjustments.

And keeping new plan fully charged as it is.

Regards,

Andrei

[karan bansal]

Hi Andrei,

To clarify the requirement, you wish : 

* There should be no credit/adjustment of 14.45 that the user has paid.

* There should only be a charge 21.95 for the new plan.

* The new subscription starting 21st May OR the plan updated for existing subscription starting 21st May.

If the above is correct, then how are you looking to handle the excess 14.45 ?

Regards

Karan

[karan bansal]

Hi Andrei,

Regarding the third: I would like to update plan for existing subscription with immediate effect and without credit adjustment for previously paid plan.

14.45 is prorated part for previously paid plan with full recurring charge 14.95

21.95 recurring charge for new plan. 

Billing mode is In Advance. There is no excess. Old plan have to be fully paid without prorate/refund, even the user have used it for one minute only. New plan must be fully paid as well.

Have you considered the possibility of cancelling the existing subscription End Of term, this would remove any possibility of refund/credit. And create a new subscription for the new plan whenever the users wishes to change it.

Regards

Karan 

[Andrei Karotki]

Hi Karan,

Keeping an existing subscription till END OF TERM and having an additional new subscription  is not really a way for us because of dependencies for such kind of "plans", Exact one is required.

Regards,

Andrei

[Andrei Karotki]

Hi Karan,

The first and the second your points are correct.

Regarding the third: I would like to update plan for existing subscription with immediate effect and without credit adjustment for previously paid plan.

14.45 is prorated part for previously paid plan with full recurring charge 14.95

21.95 recurring charge for new plan. 

Billing mode is In Advance. There is no excess. Old plan have to be fully paid without prorate/refund, even the user have used it for one minute only. New plan must be fully paid as well.

Regard,

Andrei

Сб, 24 мая 2025 г. в 20:47, karan bansal <karanba...@gmail.com>:

To view this discussion visit https://groups.google.com/d/msgid/killbilling-users/0ac75033-4baa-4912-96fd-937bc53bd440n%40googlegroups.com.