Accidentally set 12-month renewal for monthly plan – how to fix existing subscriber?

[violet iron]

Hi,

I mistakenly configured my monthly plan to renew every 12 months instead of every month.

Now I have an active user on that plan, and their subscription shows renewal every 12 months. I actually want to charge them monthly.

How can I fix this for the existing subscriber?

Please guide me on the correct way to handle this without causing issues for the customer.

Thanks!

[deep fractal]

You can’t change the billing interval of an existing subscription directly.

✅ Correct approach

1. Create a new product with:
   • Repeat payment every: 1 Month
2. Change the subscriber’s plan using:

   POST /subscriptions/{subscription_id}/change-plan
   

   • Set product_id = new monthly product
   • Choose a proration_billing_mode

Proration options

• prorated_immediately → Fair billing based on unused annual time
• difference_immediately → Charges/credits only the price difference
• full_immediately → Charges full monthly price and resets cycle

If you want to start clean from monthly billing, use full_immediately.

You can also do this directly from the Dashboard → Subscription → Change Plan.

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Helpful Links

• https://docs.dodopayments.com/api-reference/subscriptions/change-plan
• https://docs.dodopayments.com/developer-resources/subscription-upgrade-downgrade
• https://docs.dodopayments.com/features/subscription