Why shipping is charged for one-time product added to a subscription order?

Shopify Discussion

Topic summary

A technical issue exists where adding one-time products to subscription orders triggers duplicate shipping charges. This occurs because subscriptions use a separate Subscription Shipping Profile while one-time products pull from standard Shopify Shipping Profiles.

Root Cause:

  • Shopify’s current system aggregates shipping rates from different profiles
  • When products from separate profiles are combined in one order, both shipping rates apply
  • This is a platform-level restriction, not a configuration error

Proposed Solution:

  • AiTrillion’s Membership V2 feature offers a workaround
  • Allows setting up perks like free shipping for one-time products, collections, or specific items
  • Could potentially eliminate the duplicate shipping charge issue

The discussion remains open for additional solutions or alternative approaches to this shipping profile limitation.

Summarized with AI on October 24. AI used: claude-sonnet-4-5-20250929.
1

Hi there,

The shipping that applies to subscriptions is set in our Subscription Shipping Profile, and then your one-time products use the shipping settings set in the Shopify Shipping Profiles.

Adding the one-time product will always aggregate the shipping rates, which is due to the current restriction on the Shopify side. Since the one-time add-on product is in a different profile than the subscriptions, adding it to the cart will always pull in that second rate.

Has anyone found workaround?

2

Hello @Giuliana.Sgroi ,

I hope you are doing well!

Yes! We do have workaround. Where, AiTrillion membership can help you with the subscriptions and with one time products. In Membership V2, we have option to add the perks as free shipping. The product can be a one-time or a collection or any products where we can add the free shipping.

If you want to know more, feel free to let me know.

If you want to check features, click here.