Charge a one-time for a service, while the merchant is already on app subscription?

Shopify Apps

Topic summary

A developer wants to charge merchants a one-time consulting fee while they maintain an active app subscription, without disrupting the existing subscription.

Key Concern:

  • Uncertainty about whether Shopify’s billing system allows simultaneous one-time charges alongside recurring subscription payments
  • Need to ensure the one-time charge won’t interfere with or cancel the ongoing subscription

Context:

  • All payments must process through Shopify’s official billing system
  • The one-time fee would cover additional services (consulting) separate from the core app subscription
  • This would apply to individual merchants on a case-by-case basis

Status: The question remains unanswered with no solutions or guidance provided yet.

Summarized with AI on October 30. AI used: claude-sonnet-4-5-20250929.
1

Is it possible to charge a one-time fee for consulting, while the merchant is already on a subscription plan for the app? I am unsure if the charge is possible while they are already on a subscription. I don’t want it to affect the subscription.

All charges must go through Shopify’s billing system, so I want to know of a way to do an extra charge for a single merchant if they require services aside from the app subscription.