Ask the internet what a Magento-to-Shopify migration costs and the answers span two orders of magnitude: a few hundred dollars in migration tools at one end, forum advice around five figures in the middle, agency estimates stretching past six figures at the top. Every one of those numbers is honest about something and useless on its own, because they are pricing different projects that happen to share a name. The tool price covers moving data. The six-figure estimate covers rebuilding a business's commerce operation on a new platform. For a B2B operation, only the second project exists.
Quick answer: A Magento-to-Shopify migration for a B2B operation is priced by four workstreams, and the data move everyone fixates on is the cheapest of them. The real budget lives in rebuilding the B2B pricing and account structure, re-integrating the ERP against Shopify's APIs, and replacing custom Magento modules with maintainable equivalents. A straightforward catalog with standard B2B configuration typically runs eight to fourteen weeks of project work; complex ERP integrations and heavy custom logic run longer. The number that makes the cost rational is the one it retires: mid-market B2B operations on Adobe Commerce typically carry $80,000 to $150,000 per year in platform overhead.
Why the Published Answers Miss B2B Entirely
The generic estimates are built on a retail mental model: a catalog, customer records, order history, a theme. Move the data, restyle the storefront, redirect the URLs, done. For a direct-to-consumer store, that model is roughly right, which is why tool-based migrations at the low end genuinely work for some businesses.
A B2B operation on Magento is carrying things that model never prices. Customer groups with negotiated pricing. Contract rates and volume discounts encoded in configuration and custom modules. An ERP integration, usually a custom Magento module, moving orders, inventory, and pricing between the storefront and the system that actually runs the company, plus quote workflows, requisition lists, and company account hierarchies. None of that exports through a migration tool, and all of it has to exist on the other side, or launch day is the day your wholesale buyers discover their pricing is gone.
So the honest cost question is not "what does a migration cost." It is "which of the four workstreams does my environment need, and how heavy is each one."
The Four Workstreams That Set the Price
Data migration is the commodity workstream. Products, variants, customers, and order history move through well-worn paths, and order history migrates as part of standard scope. Volume adds effort but rarely surprises. If this were the whole project, the cheap estimates would be right, and for B2B it never is.
The B2B structure rebuild is where budgets start diverging. Every customer group, contract price, volume discount, and payment term in your Magento configuration has to be mapped onto Shopify's company accounts, catalogs, and price lists, and validated so buyers log in on launch day to find their pricing intact. Cost scales with the count and messiness of those structures: forty customer groups maintained by three different people over eight years cost more to map than a dozen clean tiers, and the mapping is exactly where a migration partner earns their fee. The destination architecture this builds toward is the same one covered in the contractor pricing and account tier guide, applied to whatever your vertical calls its tiers.
ERP re-integration is the workstream that separates B2B quotes from retail quotes. The custom module connecting Magento to NetSuite, SAP, Microsoft Dynamics, or Epicor does not transfer; the integration is rebuilt for Shopify's API layer, scoped in discovery and built in parallel so it is tested before go-live. This is typically the largest single line in a B2B migration budget, and the one with the widest range, a clean, well-documented integration rebuilds faster than one surviving on tribal knowledge from a developer who left in 2021. It is also the line with the clearest payoff, since the fragile module being replaced is one of the recurring costs driving the migration in the first place.
Custom module replacement is the wildcard. Every Magento environment past a certain age accumulates custom modules, and each one gets audited in discovery: some map to native Shopify Plus features, some to maintained apps, and some need custom builds. The audit is why serious partners will not quote a number before discovery, and why any firm quote produced without one is a guess wearing a contract.
The Costs the Estimates Forget
A few line items reliably surprise first-time migrators. The storefront itself: themes do not transfer, and the buyer-facing experience gets rebuilt, which for B2B is an upgrade opportunity rather than a tax, but still a scoped one. SEO continuity: 301 redirects mapped across the full URL structure before go-live, the discipline covered in the replatforming revenue-preservation guide. The parallel run: both environments live until the Shopify side is validated, which is cheap insurance and non-zero effort. And the small human one: customer passwords cannot migrate between the platforms' hashing schemes, so a reset flow and a well-timed communication to your account base are part of go-live planning, not an afterthought.
The Payback Math That Makes the Number Rational
The migration cost is one side of a ledger. The other side is what running Magento actually costs, and for mid-market B2B operations on Adobe Commerce, the full breakdown on our Magento migration page puts typical total cost of ownership at $80,000 to $150,000 per year: licensing that starts at $22,000 annually and climbs with sales volume, hosting infrastructure, extension and developer retainers, and the security and upgrade maintenance the platform model puts on your team. Shopify Plus starts at $2,300 per month, with the B2B features that drove most of the Magento extension stack built in.
That gap is why the migration question is a payback question. A project whose cost sits inside one year of the overhead it eliminates is not an expense decision; it is a refinancing. Clients typically eliminate a significant share of technology overhead within the first year, driven primarily by removed Adobe Commerce licensing and the end of the developer-dependency model, where every customer group, pricing change, and checkout adjustment was a development ticket. The Magento versus Shopify Plus comparison walks the cost side in detail if the decision is still upstream of the migration question.
How to Get a Real Number for Your Environment
A quotable number comes out of discovery, and you can accelerate discovery by arriving with five things: your custom module list (or honest admission that nobody has one), your ERP and what currently syncs with it, your customer group and contract pricing count, your catalog and order volumes, and the parts of your checkout and quoting workflow that are custom. Those five determine which workstreams are heavy in your environment, and they are the difference between a real scope and a brochure estimate.
Uncap has been a Shopify Platinum Partner since 2013, with more than 380 B2B commerce projects delivered, and Magento and Adobe Commerce migrations with full ERP continuity are a core capability. Talk to Our Experts for an assessment of your specific environment, a real one, scoped in discovery, not a number pulled from a range.
Related reading: What Magento end of life and the 2026 security patch outlook mean for your store.
Frequently asked questions
How much does it cost to migrate from Magento to Shopify?
For a B2B operation, the price is set by four workstreams: data migration (the smallest), rebuilding B2B pricing and account structures, re-integrating the ERP against Shopify's APIs (typically the largest), and replacing custom Magento modules. Published generic estimates range from tool-level costs to six figures because they price different subsets of that work; a real number for your environment comes out of a discovery audit of your modules, ERP workflows, and pricing structures.
Why do B2B migrations cost more than retail migrations?
Because B2B environments carry structures retail stores do not: customer groups with negotiated and contract pricing, ERP integrations built as custom Magento modules, and quote and company-account workflows. All of it must be rebuilt and validated on Shopify rather than exported, which is work no migration tool performs.
How long does a Magento-to-Shopify migration take?
A straightforward catalog with standard B2B configuration typically runs eight to fourteen weeks. Complex ERP integrations, large catalogs, and heavy custom pricing logic extend that, which is why timeline and cost are both scoped in discovery before work begins.
Is the migration cost worth it against staying on Magento?
Frame it against the overhead being retired: mid-market B2B operations on Adobe Commerce typically run $80,000 to $150,000 per year across licensing, hosting, retainers, and maintenance, against Shopify Plus starting at $2,300 per month. When the one-time project cost sits inside roughly a year of eliminated overhead, the migration functions as refinancing rather than spending.
