How to handle multiple Stripe subscriptions in one Memberstack checkout for new sign-ups with add-ons?

Post author
Vladimir Babic

Hi Memberstack team,

We’d love your help with an add-on workflow we’re building.

Here’s what’s already working:

  • If a paid member is logged in and wants to purchase an add-on, we send them to the add-on’s price ID in Stripe Checkout.
  • They complete the purchase, and as a result, they now have two plans (two Stripe subscriptions) linked to their Memberstack account. This works perfectly.

Here’s what we’re trying to achieve:

  • Allow a new visitor (not yet a member) to sign up for a main plan and select an add-on at the same time.
  • Ideally, this would be handled in a single Stripe Checkout flow, instead of requiring two separate checkouts.

A key constraint:

  • We have many different plans, so adding an additional price (main + addon) for each one is not a viable option.
  • The add-on needs to function as a true second plan for the user.

Could you advise if this is possible within Memberstack’s current setup?

Comments

3 comments

  • Comment author
    Chukwudi

    Thanks so much for reaching out and for explaining your workflow clearly — that helps a lot.

    At the moment, Memberstack doesn’t support purchasing a main plan and an add-on in a single Stripe Checkout flow. Each plan (including add-ons) needs to be purchased through its own checkout session, which is why your current two-step setup works.

    Since you have multiple main plans, creating combined products in Stripe (main + add-on) isn’t scalable, and unfortunately there isn’t a way to link two separate plans to a member in one checkout right now.

    Current options:

    • Continue with the current two-checkout process (main plan first, then redirect members to purchase add-ons).
    • Alternatively, handle the combined checkout entirely in Stripe with custom logic, then use our API to assign multiple plans to the member once the checkout completes.

    I hope this helps

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  • Comment author
    A J

    Hey Vladimir Babic,

    I believe currently this kind of setup is not possible, a user would be able to purchase only one plan at a time via the checkout and not two different plans. You could create a wishlist explaining your project use-case and how such feature could help to get notification if there are any future updates on it. But currently the in-built way is to have the separate checkouts.

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  • Comment author
    Vladimir Babic

    Chukwudi that actually helps.

    Alternatively, handle the combined checkout entirely in Stripe with custom logic, then use our API to assign multiple plans to the member once the checkout completes.

    We'll try something like this

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