Magento to Shopify Plus Migration: Timeline, Costs, and the 5 Things That Go Wrong Every Time

Last reviewed May 2026. Magento-to-Shopify-Plus migrations are the most complex and expensive platform migrations in ecommerce. Budget $10,000–$100,000 or more, plan for 8–24 weeks, and expect the hardest parts to be custom module replacement, ERP re-integration, and multi-store architecture decisions. This is almost never a DIY job.

I want to be upfront: if you are on Magento and considering Shopify Plus, the migration will be harder than switching from WooCommerce or BigCommerce. Magento stores tend to be deeply customized with years of accumulated modules, integrations, and business logic baked into the platform. The payoff is worth it — Shopify Plus typically costs 40–60% less to operate than Adobe Commerce — but the migration itself requires serious planning.

Why Magento Merchants Move to Shopify Plus

Merchants do not leave Magento because it is a bad platform. They leave because the total cost of ownership has become unsustainable. Here are the four main drivers.

• Magento 1 end-of-life — if you are still on Magento 1, you are running unpatched software with known security vulnerabilities. Every month you wait increases your risk.
• Adobe Commerce hosting and maintenance costs — $2,000–$10,000 per month just to keep the platform running, before you build anything new
• Developer scarcity — Magento specialists are increasingly hard to find, and their hourly rates have inflated accordingly. The talent pool is shrinking as developers move to other platforms.
• Total cost of ownership — Shopify Plus typically costs 40–60% less to operate than Adobe Commerce for mid-market merchants, freeing budget for growth instead of infrastructure

What Transfers from Magento to Shopify Plus and What Gets Rebuilt

Cost Breakdown by Migration Complexity

Magento migration costs vary wildly because Magento stores vary wildly. A basic catalog-only store is a different job than an enterprise setup with 15 custom modules and an ERP. Here is the realistic range.

These numbers include agency fees for the migration itself. They do not include Shopify Plus subscription costs ($2,300/month starting), new app subscriptions, or any post-migration optimization work. Budget those separately.

The 5 Things That Go Wrong Every Time

1. Underestimating Custom Module Replacement

Every custom Magento module is a mini-project on the Shopify side. A module that took two weeks to build in Magento might take three weeks to replicate as a Shopify app — or you might need to find a third-party Shopify app and accept that it works differently. Multiply this by 10–15 modules and you see where the timeline expands.

2. ERP Re-Integration Scope Creep

The ERP integration "worked in Magento," but the data format, API structure, and sync logic are all different on Shopify. NetSuite, SAP, and Microsoft Dynamics integrations typically take 4–8 weeks to re-implement and test. This is where project budgets overrun most often.

3. Multi-Store Architecture Mismatch

Magento's multi-store setup uses store views within a single installation. Shopify Plus uses expansion stores — each one is a separate Shopify store with shared backend capabilities. This is a fundamentally different architecture, and it requires rethinking how you manage content, pricing, and inventory across regions or brands.

4. SEO Regression from URL Changes

Magento uses deeply nested category URLs like /shoes/running/men/blue-sneaker.html. Shopify uses flat URLs like /products/blue-sneaker. Every URL changes, and Magento stores often have thousands of indexed pages. Redirect mapping for a Magento migration is a significant project in itself.

5. Team Workflow Disruption

Magento's admin interface is completely different from Shopify's. Your operations team, customer service staff, and content editors all need retraining. Budget for a 2–4 week transition period where everything takes longer than usual while your team learns the new system.

Key Architecture Decisions for Shopify Plus

Before your agency starts building, you need to make these strategic decisions. Getting them right saves you from expensive rebuilds later.

• Single store vs expansion stores — how will you handle multiple regions, languages, or brands? Each expansion store is a separate Shopify instance with separate themes and apps.
• B2B on same store vs separate wholesale store — Shopify Plus B2B features are improving rapidly, but some merchants still need a dedicated wholesale experience.
• Headless (Hydrogen) vs theme-based frontend — headless adds $80,000–$200,000+ to the build cost. Make sure you actually need it before committing.
• Native Shopify apps vs custom-built replacements — for each Magento module, decide whether an off-the-shelf Shopify app is good enough or if custom development is required.

How to Choose a Migration Agency

Must-haves

• Proven Magento-to-Shopify migration portfolio — ask for specific case studies, not just Shopify experience in general
• Shopify Plus Partner status
• ERP integration experience matching your specific ERP (NetSuite, SAP, Microsoft Dynamics)
• A structured discovery process before they quote the project

Red flags

• Quoting a fixed price without a paid discovery phase — a Magento migration has too many unknowns for a blind quote
• No mention of data audit or cleanup in the proposal
• No post-launch support included
• No timeline for team training and transition

Frequently Asked Questions

The Bottom Line

Magento-to-Shopify-Plus is the most complex platform migration in ecommerce, but it is also the one with the clearest ROI. The ongoing cost savings, reduced maintenance burden, and faster time-to-market on Shopify Plus typically pay back the migration cost within 12–18 months.

The key is picking the right agency. This is not a project for a general Shopify shop. You need a team that has done Magento migrations before, understands ERP integrations, and will run a proper discovery phase before quoting you a number. Take the time to vet your agency — it is the most important decision in this entire process.