Magento to Shopify Migration: Process, Costs and What Breaks

Migrating off Magento is one of the more consequential decisions a growing ecommerce business can make. Done well, it lowers ongoing hosting and maintenance costs, speeds up the team's ability to ship changes, and removes the burden of managing servers, indexers, and security patches. Done poorly, it breaks SEO rankings, loses customer accounts, and strips out B2B logic nobody documented in the first place.

This post walks through what an honest Magento to Shopify migration actually involves, step by step, along with the things that commonly go wrong, realistic cost ranges, and the cases where staying on Magento is genuinely the smarter call.

The Migration Process, Phase by Phase

A migration that goes smoothly is really a sequence of six distinct phases, not one big cutover event. Skipping or rushing any of these is where most of the painful surprises come from.

Phase 1: Audit and Feature Parity Mapping

Before touching any code, someone needs to catalog everything the current Magento store actually does. This includes custom extensions, checkout customizations, B2B pricing rules, integrations with ERP or fulfillment systems, and any admin workflows the operations team relies on daily that were never written down anywhere.

For each item, the question is simple: does Shopify (or Shopify Plus) do this natively, does it require an app, or does it require custom development? This mapping exercise typically takes 2 to 4 weeks for a mid-complexity store and produces the scope document everything else is priced against. It works best when the team doing the audit has genuine Magento development depth, since half the extensions and customizations in an older store are undocumented and only make sense to someone who has worked inside the platform. Skipping this phase is the single most common cause of migrations that run over budget.

Phase 2: Data Migration

Data migration sounds mechanical but is where the real complexity lives.

Products with complex attribute sets. Magento's EAV model lets products carry dozens of custom attributes, configurable variants, and layered category assignments. Shopify's product model is comparatively flat (options, variants, metafields). Mapping a Magento product with 40 custom attributes into Shopify usually means converting most of them into metafields and rethinking how variants and options are structured, which is manual work, not a simple export and import.

Customers and password rehashing. This is the detail most teams do not expect. Magento hashes passwords with its own algorithm. Shopify cannot import that hash and log a customer in transparently, because the two systems do not share a compatible hashing scheme. In practice, this means either forcing a password reset for every customer on first login post-migration, or migrating email and order history while treating every account as new for authentication purposes. There is no clean workaround here, only a decision about which tradeoff to accept.

Order history and reviews. Historical orders can be migrated into Shopify, but they typically land as unfulfillable historical records rather than live orders with their original fulfillment state. Reviews (particularly from third-party Magento review extensions) often need a separate export and reimport into whatever review app you choose on Shopify, since there is no native equivalent.

Phase 3: Replacing Custom Extensions

Every Magento store of any age has a pile of custom or heavily modified extensions handling things like custom pricing rules, gift cards, subscription logic, or warehouse routing. Each one needs a decision: replace with a Shopify app, rebuild as a custom app, or eliminate the feature if usage data shows it is not actually used.

Realistically, budget 1 to 2 weeks of evaluation per major extension, and expect 30 to 50 percent of "custom" Magento functionality to have a solid off-the-shelf Shopify app equivalent. The rest needs custom development, which is where a lot of the migration budget actually goes.

Phase 4: Checkout and B2B Logic Rebuild

Shopify's standard checkout is more locked down than Magento's, though Shopify Plus (via checkout extensibility) opens up significant customization that was not possible a few years ago. If your Magento store has custom checkout steps, negotiated B2B pricing, or approval workflows, this phase is usually the most technically demanding part of the whole migration and deserves its own dedicated testing cycle.

Phase 5: SEO Redirect Mapping at Scale

URL structures change between platforms, and every changed URL without a redirect is a lost ranking and a broken inbound link. For a store with thousands of product and category pages, this means generating a full redirect map (old URL to new URL) before launch, not after traffic starts dropping.

Plan for 301 redirects covering every indexed URL, updated XML sitemaps, and a monitoring period of 60 to 90 days post-launch watching Google Search Console for crawl errors and ranking movement. Stores that skip this step commonly see a 20 to 40 percent temporary organic traffic dip that a proper redirect strategy would have mostly prevented.

Phase 6: Testing and Cutover

Final testing should cover the full purchase path across devices, payment methods, tax calculation, shipping rate accuracy, and any integrations (email marketing, ERP, fulfillment). Cutover itself is usually done during a low-traffic window with DNS changes staged and a rollback plan documented, even if you never expect to use it.

What Commonly Breaks or Does Not Come Across Cleanly

Being upfront about this before you start saves a lot of frustration mid-project.

• Customer login sessions. As covered above, passwords cannot transfer, so plan customer communication around this from day one.
• Deep custom attribute structures. Highly granular Magento attribute sets rarely map one to one into Shopify's model without simplification.
• Wishlist data. Rarely migrates cleanly and often needs to be rebuilt from scratch on the new app.
• Store credit and gift card balances. These require careful reconciliation and usually a dedicated app on the Shopify side.
• Custom admin reports. Operations teams often build workflows around Magento admin grids and reports that have no direct Shopify equivalent and need rebuilding in Shopify's admin or a connected tool.
• Multi-store complexity. If you run multiple Magento storefronts from one instance, mapping that into Shopify (multiple stores, or Shopify Markets from a single store) is a significant architectural decision, not a settings change.

Realistic Costs by Store Complexity

These ranges reflect typical projects we scope, covering the full six-phase process above, not just data transfer.

Store Complexity	Typical Scope	Cost Range
Simple B2C, under 2,000 SKUs, few integrations	Standard catalog, no B2B logic	$25,000 to $50,000
Mid-complexity, 2,000 to 20,000 SKUs, some custom checkout	Custom apps, multiple integrations	$50,000 to $120,000
High complexity, B2B pricing, multi-store, deep ERP integration	Full checkout extensibility, custom apps, ERP middleware rebuild	$120,000 to $300,000+

A Realistic Timeline

A simple B2C migration can realistically complete in 10 to 12 weeks. A mid-complexity store with meaningful custom logic and integrations typically runs 14 to 18 weeks. A high-complexity B2B or multi-store migration commonly takes 18 to 24 weeks, and rushing this category of project is where the worst post-launch problems tend to originate.

Throughout the transition, it often makes sense to keep Magento development support in place for the legacy store until the new platform is fully validated, rather than cutting off Magento support the moment migration work begins.

When You Should Not Migrate

Migration is not automatically the right move just because Magento feels expensive or dated.

• Your Magento store is performing well and the team is comfortable maintaining it. Optimization is usually cheaper than replatforming; a focused Magento development engagement to tune the existing stack is often the right path instead.
• Your B2B logic is deeply custom and business-critical. Rebuilding negotiated pricing, approval chains, and contract logic on a new platform is expensive and risky. Sometimes the right move is improving the existing Magento setup instead of replacing it.
• You do not have 3 to 6 months of runway for the project. Rushed migrations produce more bugs and more SEO damage than slow, deliberate ones.
• Your real problem is performance, not the platform. A slow Magento store is very often a hosting and configuration problem, not a reason to migrate. Fix that first before spending six figures on a new platform.
• You need advanced B2B features Shopify still does not fully match. Despite major B2B improvements in Shopify Plus, some complex contract and quoting workflows still favor Adobe Commerce.

If, after weighing all this, migration is still the right call, our ecommerce development team can scope the specific work against your current store rather than a generic estimate, and you can browse examples of similar projects in our case studies.

FAQ

How long does customer data migration usually take?

For a store with under 50,000 customer records, the technical export and import typically takes 1 to 2 weeks, but planning the password reset communication and testing account access properly adds another 1 to 2 weeks on top.

Will we lose our Google rankings during migration?

Some temporary fluctuation is normal even with a well-executed redirect strategy, typically a few weeks of minor movement. Rankings loss becomes serious and long-lasting only when redirect mapping is incomplete or skipped, which is why that phase deserves dedicated time rather than being an afterthought.

Can we migrate in phases instead of all at once?

Partial migrations are possible but add complexity, since you need to run two systems in parallel and keep data synchronized between them. For most mid-size stores, a single well-tested cutover after thorough staging is less risky overall than a phased approach.

Do we need to rebuild every custom Magento extension?

No. Many custom Magento extensions map to a standard Shopify app with equivalent functionality, sometimes better. The audit phase is specifically designed to identify which extensions genuinely need custom rebuilding versus which ones an existing app already covers.

If you are weighing a Magento to Shopify migration and want a realistic scope and cost estimate for your specific store, book a free 1-hour strategy call and we will map it out with you.