Know which checkout surfaces you can customise on your Shopify plan before choosing an app, commissioning development or upgrading to Plus.
Shopify checkout customisation depends on the surface you want to change. The information, shipping and payment steps require Shopify Plus for Checkout UI extensions. The Thank you and Order status pages have their own extension options and requirements. Installing a third-party app does not remove the Plus restriction on the core checkout steps.
At a glance
Situation | What to check |
|---|---|
Information, shipping, payment | Checkout UI extensions require Plus; apps cannot bypass this. |
Thank you and Order status | Check the specific extension target, app and plan requirements. |
Product page and cart | Resolve delivery, availability and variant questions before checkout. |
That distinction matters before you commission a feature. A useful retention idea can become an unnecessary platform upgrade if the team has not first identified where it belongs.
Start with the customer problem
Write the desired outcome in one sentence. Do you want customers to understand delivery costs earlier, choose the correct variant, find their order after purchase or discover a complementary product?
Then identify the surface where that decision happens. Delivery uncertainty might be resolved on the product page or cart. Order tracking belongs after purchase. A field inside the shipping step is a different technical requirement. Treating all of these as checkout customisation hides the actual scope.
What requires Shopify Plus
Shopify’s current developer documentation limits Checkout UI extensions on the information, shipping and payment steps to Plus stores. That applies to those extensions whether they come from a custom build or an app.
Before buying an app, inspect its supported placement and plan requirements. An app might advertise checkout functionality while providing a different experience on different plans. Ask for a demonstration on your actual plan and payment configuration.
What to investigate without Plus
Review the Thank you and Order status extension documentation separately. These surfaces can support post-purchase communication, order information and relevant next steps, subject to the extension target, app and plan requirements.
Do not assume that an extension on the Thank you page can edit a completed order, charge an additional payment or deliver a one-click upsell. Those are separate capabilities that need separate validation.
The storefront remains another practical place to improve purchase confidence. Product availability, variant selection, delivery explanations and cart information can often be addressed before the customer reaches Shopify’s core checkout. Improving these areas can be the right intervention even when a checkout extension is technically possible.
How to scope the implementation
List the required placement, the data the component needs and the action it must perform. Check each against the current Shopify documentation. Confirm payment behaviour, translations, accessibility and compatibility with the apps already installed.
Use a development environment to test a representative purchase journey. Include a discount, an unavailable item, an international address and the payment methods your customers use. If a feature is unavailable, agree on an alternative before implementation starts.
Decide on Plus from the whole operating model
An upgrade decision should include B2B requirements, integration complexity, checkout needs and the team’s operating workload. A single badge or message is a weak reason to redesign the platform budget.
At Montagne, Commerce Foundations connects the storefront to the way the business sells and operates. That means defining the commercial requirement first, then choosing standard functionality, an app or custom development where it earns its place.
Practical checklist
Describe the customer problem and the action the feature must perform.
Confirm placement, data access and plan requirements in the current documentation.
Test discounts, international addresses, translations and relevant payment methods.
Compare an upgrade against the whole operating model, including integrations and B2B.
Questions before you build
Can an App Store extension bypass the Plus requirement on the payment step? No. Shopify’s documented restriction applies to Checkout UI extensions on that step.
Does better checkout UX always need an extension? No. Product and cart clarity can resolve questions before checkout. Diagnose the point of friction before choosing a tool.
Should we upgrade before scoping? Define the required capabilities first. Then compare the platform and implementation costs against the business need.
Talk to Montagne about your Shopify setup.
