- Short answer
- For a portal built as a customer account UI extension, yes: those extensions run only on new customer accounts, not legacy ones.
- Legacy accounts
- Customer account UI extensions aren't supported on legacy customer accounts.
- Legacy status
- Deprecated since February 2026; no longer available to new stores.
- Built for Shopify
- Scheduled for December 1, 2026: subscription apps with buyer self-service must authenticate customers using the Customer Account API.
- Undo window
- An upgrade to new customer accounts can be reverted within 30 days.
- Shopify Subscriptions
- The Subscriptions help pages we read (September 25, 2026) don't separate legacy from new accounts.
Can legacy customer accounts show a subscription portal?
Not as an extension inside the account. Shopify's developer documentation on building apps for customer accounts draws the line without a qualifier:
Customer account UI extensions are only supported on the new version of customer accounts. Legacy customer accounts don't support customer account UI extensions.
The new version is where subscriptions can live in the account itself. Shopify's upgrade guide describes customizing it with app blocks: "you can add loyalty, subscriptions, and wishlist features to customer accounts with no code required."
For legacy accounts, the same guide mentions a different setup: external links, "for example, a link to a separate subscriptions or returns portal."
Which portal setup needs new customer accounts?
Shopify's customization options page lists three ways to offer subscriptions on new customer accounts: Shopify features, apps from the Shopify App Store, and a custom app built with customer account UI extensions. The fourth setup is an external link to a separate portal.
Four portal setups and the account version each relies on
| Setup | Where subscribers manage it | Account version per Shopify's pages |
|---|---|---|
| Shopify Subscriptions (native app) | Signed in to their customer account: resume, skip or cancel, payment methods and shipping address | Sign-in from the store menu needs activated customer accounts; the Subscriptions pages we read don't split legacy and new |
| App Store app with app blocks | App blocks added to the customer account, with no code required | New customer accounts |
| Custom app | Customer account UI extensions inside the account | New customer accounts only; legacy doesn't support these extensions |
| External portal link | A separate subscriptions portal, linked from the account | Described for legacy customer accounts; the upgrade guide also lets you add it to the customer account main menu or, with an app, to a page |
Shopify.dev and Shopify Help Center pages listed under Sources, read on September 25, 2026.
The native Shopify Subscriptions app works through the account: customers "can sign in to their customer account to view and manage their one-time and subscription purchases." Shopify's upgrade guide lists these controls (resume, skip, cancel and payment method updates) among the features of new customer accounts.
The Shopify Subscriptions help pages we read on September 25, 2026 describe signing in to a customer account without separating legacy from new. They don't say whether a store still on legacy accounts gets the same controls. On new customer accounts, the upgrade guide lists those controls, so upgrading takes the legacy question off the table.
What changes for subscription apps on December 1, 2026?
Shopify has scheduled a Built for Shopify requirement aimed at self-service portals:
Effective December 1, 2026, Returns and exchanges apps and Subscription apps that provide buyer-facing self-service experiences must authenticate customers using the Customer Account API.
A subscription app is in scope if it offers buyers a self-service experience, and Shopify's examples include "updating a subscription." The stake is the badge: apps that miss the deadline "are at risk of losing Built for Shopify status."
The Built for Shopify requirements page states two related rules. Requirement 5.14.5 says an app "must support the Customer Account API as the primary method for customer authentication," and the requirements page words 5.14.5 without the self-service qualifier the changelog uses. Requirement 5.14.4 says an app "must use Customer Account UI extensions to enable customers to view and manage their subscriptions."
For you, the practical step is a question to your vendor: does its portal authenticate through the Customer Account API, and does it run as a customer account extension? Our recurring payments guide collects what changed for subscription apps in 2026.
How do you move a subscription portal to new accounts?
Staying on legacy isn't a long-term plan. Since February 2026, legacy customer accounts have been deprecated: they're no longer available to new stores, and existing stores that weren't using them no longer have access. Shopify's developer documentation adds, "All merchants must upgrade to the latest version of customer accounts."
You upgrade in your Shopify admin, and you can revert within 30 days, which leaves time to test the subscription portal. For the full sequence, follow our step-by-step migration path to new customer accounts.
Before switching, list every external link in your legacy account. For a link to a separate subscriptions portal, Shopify's advice is to check whether a Shopify feature or app can offer that feature instead. On new accounts, that means a Shopify feature, an App Store app for subscriptions that supports customer accounts, or a custom app with customer account UI extensions.
If you still need the link, Shopify says you can add it to your customer account main menu or use an app to add it to a page.
If you use the native Shopify Subscriptions app and want customers to sign in from your store's menu, activate customer accounts first. The app's customer experience page says signing in from your store's menu "works only when you've activated customer accounts."
If some of your subscribers buy wholesale, check whether Shopify subscriptions work for B2B customers before you choose a setup.
This article was written entirely by AI under human editorial direction. The editor sets the topic and structure, runs multi-stage validation on facts, links, and interactive elements, and verifies the output is useful from a business perspective. All claims are checked against official Shopify sources. Details may change — always confirm critical data at shopify.com.
Editorial Policy