Shopify Customer Accounts Migration: Legacy Is Deprecated

You opened a notice that legacy customer accounts are going away, and you're not sure what to do. Or you spun up a new store this year and couldn't turn the old accounts on at all. Or your loyalty widget and custom login live on the old /account pages, and you don't know what survives a switch. Or you haven't moved yet because you're afraid customers will complain about login codes once you do.

Legacy customer accounts are Shopify's original, password-and-Liquid version of the account pages, and they were deprecated in February 2026. This guide is the triage: what changed, what still works, what breaks when you switch, and exactly how to move — in merchant language, not developer docs.

What Actually Changed — and What Still Works Today

Deprecation is not the same as removal. Legacy customer accounts still function as of October 2026, but three things changed at once. New stores can no longer enable legacy accounts at all — the option is simply no longer available to them. Existing stores that weren't already using legacy lost access to it too. And across the board, Shopify has said it will stop providing feature updates and technical support for the old version. In Shopify's own words, legacy accounts are “no longer available to new stores and existing stores not using it,” and Shopify “will stop providing feature updates and technical support for this older version.”

What's not set is the ending. Shopify says a final sunset date “will be announced later in 2026,” and as of October 2026 that date still doesn't exist — Shopify has named no tier-specific deadline, and the removal itself could land in 2026 or later. That gap is exactly what this guide is built around: the migration path itself is evergreen and holds whenever the date lands, while the countdown to sunset is the part that expires. Here is the sequence so far.

One more source of confusion is worth clearing before you plan anything, because it sends merchants chasing the wrong deadline.

Legacy vs New Customer Accounts: What Actually Changes

Shopify publishes a side-by-side comparison of the two versions. The differences fall into two groups: how the experience works day to day, and which features exist at all. One row is worth reading carefully before you let it decide your migration date: self-serve returns carry their own activation and their own rules, and what you actually have to switch on is in our guide to return and cancellation rules. This table is the full official comparison — scan it for the rows that describe your store.

There is also a difference your customers meet directly: login links do not display on the order status page of a store still on legacy.

The bottom half of that table matters for revenue, not just experience: saved payment methods, self-serve returns, store credit, Buy-again reordering, B2B, and Markets are all things legacy accounts simply can't do. B2B is the sharpest case — you can't use legacy accounts for B2B customers and orders at all, and B2B is included at no extra cost on the Basic, Grow, Advanced, and Shopify Plus plans, not just Plus. If wholesale is your model, our guide to B2B on Shopify Plus covers where company-level logins and org SSO live in the native B2B stack.

One caveat on that table: Shopify says saved payment methods “are available only to stores that use Shopify's Enterprise offering, including commerce components, and have customer accounts set up.”

The Login Change Your Customers Will Notice

The single most visible change is sign-in. New customer accounts are passwordless: a customer enters their email and receives a one-time six-digit verification code, and no password is required. They can also use Sign in with Shop, including saved passkeys — automatic, per Shopify's feature comparison, for Shop Pay stores or the Grow, Advanced, or Retail plans.

This is genuinely divisive. Merchants worry aloud about deliverability and friction: what if the code lands in spam, or the email is slow? It's a fair concern, and the honest counter comes from Shopify's own team.

Who’s in the Blast Radius: What Breaks When You Switch

For most stores, the upgrade is uneventful. But four situations need a closer look, and it's worth naming which one is yours before you touch the toggle. Shopify's guide adds three narrower limits: Flow automations built on legacy accounts can't be migrated, segments that use the customer_account_status filter won't work as expected, and customer accounts use one domain across all markets.

Start with what the switch doesn't ask you to redo. Order history and saved addresses exist on both versions, and customers sign in with the same email address they always used — Shopify's nine-step upgrade has no re-invite or re-import step. What Shopify's docs don't spell out is what moves across record by record, so confirm your own order history on the duplicate configuration you build in the checklist below.

Your /account links mostly keep working, too: Shopify automatically redirects all legacy customer-account URLs, such as /account/login, to the new pages, including hard-coded links in your theme. That promise covers the theme specifically, and one merchant who migrated two stores reports that hard-coded /account links still needed updating, without saying where those links lived — so spot-check any account links outside your theme, notification emails included.

What doesn't survive is customization. If you built a custom sign-in or registration experience — in a modal, or on a page separate from the legacy templates — Shopify says you might need to edit your theme to remove those customizations before upgrading. And the Liquid account templates themselves are on the clock: Shopify's Customer Accounts team confirmed exactly which files, and what happens to them.

That scope matters: it's those three named files, not every template in your theme, and the detail lives on the developer community, not the main changelog. Anything those files rendered has to move into a customer account UI extension, which gives a developer defined points on the Order index, Order status, and Profile pages, plus full pages with their own routes, rather than a blank Liquid canvas.

On Multipass, Shopify's pages pull in two directions. The Help Center says: “If you're already using Multipass and you're on the Shopify Plus plan, then your existing integration continues to work after you upgrade, for both API and URL sign-in. The same secret carries over, so no action is needed.” After the upgrade the Multipass setting sits under Settings, then Customer accounts, then Authentication, and Shopify says to contact Support if it isn't displayed there.

Multipass is no longer available to new stores, and Shopify's customer authentication overview still recommends that stores using it with classic customer accounts migrate to a third-party identity provider; connecting your own identity provider requires Shopify Plus.

A separate wording clash is worth untangling: Shopify's comparison table says Multipass on legacy accounts doesn't support SSO, while its developer documentation says that on new customer accounts a customer who signs in through Multipass stays signed in across the online store, checkout, market domains, and customer account pages.

If you don't need single sign-on, customers sign in directly with a one-time code or with Google or Facebook social sign-in. Headless stores can use the Customer Account API to keep customers authenticated between sign-in and checkout.

If your account area also gates members-only content or a customer portal behind login, that build is its own project rather than part of this switch — our guide to a Shopify members-only store covers it. And a fully headless storefront is a deeper rebuild: authenticated actions move to the Customer Account API, which sits in custom Shopify development territory.

How Big Is Your Migration? Find Your Route

You've seen what changes and what breaks. Now match it to your store. These five questions ask what lives on your account pages, how customers log in, and how exactly the old experience has to be preserved — and route you to the effort that fits, from “flip it this afternoon” to “this one needs a developer.”

Your Step-by-Step Migration Path

Whichever route fits, the workflow is the same shape: find what you have, rebuild it the right way, test on a copy, then flip. The one step that splits by route is step 3 — switch-ready readers have little to replace, app-swap readers install and confirm extensions, and rebuild readers hand their audit to a developer.

You have a 30-day window to revert if something is wrong, but testing first is what keeps you from needing it. Tick each step off as you go; your progress saves on this device.

What a Rebuild Costs and How Long It Takes

Shopify publishes no price for customer accounts — it's a setting in your admin, so the cost is entirely the development time to rebuild any custom functionality. Honest price data is thin, so treat the figures below as orientation from individual agencies and one developer marketplace, not a market rate; the more custom your account pages, the more the fix costs.

The four rows map onto your quiz route — the toggle is switch-ready, the app swap is the app route, and the last two are both the developer rebuild (one custom page versus an identity-provider, headless, or full migration).

DIY or Developer: Where the Line Falls

Cost tells you how much; this tells you who. The boundary between a job you finish in your admin and one that needs a developer is sharp, and getting it right saves you either an unnecessary invoice or a stalled migration. Pick the lowest route that faithfully reproduces what you had.

The Plus question is where merchants trip. To be precise: Shopify has not published a Plus-plan restriction specific to custom-built customer account UI extensions. What is Plus-gated are three nearby things people conflate with it: connecting your own identity provider, the Checkout and Accounts Configuration API for branding, and checkout UI extensions for the information, shipping, and payment steps. None of those is the customer-account UI extension itself. In plain terms: the upgrade toggle and base branding are admin settings, and Shopify lists apps built with customer account UI extensions as available on the Basic plan or higher; Plus is what you need to connect your own identity provider or to brand through the Checkout and Accounts Configuration API, and per-market customization needs Advanced or Plus.

Since building one of these extensions means a real app — scaffolded with the Shopify CLI, compiled under a strict bundle limit — it's squarely developer work regardless of plan. Watch two minutes of the 2024 walkthrough below to see why this is a developer's job and not a toggle, even if you don't write a line of it yourself.

How to Scope a Developer Brief

If your route is a rebuild, a tight brief keeps the quotes comparable and the cost honest. You already have the raw material in your migration audit. A workable brief lists:

1. Every custom account feature to rebuild, straight from your audit in step 1.
2. The exact behavior each one needs — what it showed, where, and under which conditions.
3. Whether you are moving from Multipass to a connected identity provider (this requires Plus).
4. Whether your storefront is standard or headless, since headless auth is a deeper rebuild.
5. The sign-in and account scenarios a developer should test before you sign off.

Hand that list over and ask for a fixed scope against it, not an open-ended hourly estimate. For the full process of finding, vetting, and briefing someone, see our guide to hiring a Shopify developer.

Why “Wait for the Date” Is the Losing Move

The temptation is to wait for a hard date. It's the wrong read. Shopify has already said it will stop providing feature updates and technical support for legacy accounts — the decision is made, even if the date isn't. Stores that upgrade now do it on their own schedule, with a real test window; stores that wait will do it in a rush when the date drops.

And the destination is where the ecosystem is: as of February 2026, over 70% of Shopify merchants were already using customer accounts, and 800+ apps had built extensions for them.

Waiting also assumes the choice stays yours, and that got less certain after this guide was published. Since July 30, 2026, every theme submitted to the Shopify Theme Store — new themes and updates to existing ones alike — must carry the shopify-account component, and in the same announcement Shopify dropped the requirement that themes include legacy customer account template files.

Read that next to the rule Shopify published in February: a store still on legacy accounts that upgrades to a theme without the legacy files is automatically upgraded to the latest version of customer accounts. Shopify's July announcement only drops the requirement, but its February changelog already tells theme developers they “should no longer include legacy customer account liquid files” — not a ban, so the risk is rising rather than already realised, but an ordinary theme update is now a plausible way to be migrated without ever deciding to be.

None of that makes the new accounts perfect, and it's fair to say so. One criticism from a community developer is that the deep customization Plus stores get in checkout doesn't carry over to customer accounts.

Part of that gap has since closed: Shopify's help now shows a header background color setting for customer account pages, though a background image on those pages can only be removed, not replaced. The point stands: the move is inevitable, the tools are ready, and going early is the only version of this you get to control.

The Bottom Line

The trap is waiting for a date. Shopify has already said legacy will get no more feature updates or support — and Shopify has committed only to announcing the sunset date “later in 2026,” so you don't control when it lands. Starting today buys the one thing a forced deadline takes away: time to test. And the first move costs almost nothing — one app vendor's guide pegs the step-one audit at half an hour, replacing “what will break?” with a concrete list.

Frequently Asked Questions