Magento to BigCommerce: The Complete Migration Guide for Merchants

Migrating from Magento to BigCommerce trades self-managed infrastructure for a fully hosted SaaS platform, which eliminates security patching, server provisioning, and most developer maintenance work. The switch makes economic sense for stores where Magento's ongoing overhead has outgrown the value of its deep customisation. Done correctly, including full URL mapping, clean data export, and integration audits before cutover, you can complete the move without losing organic rankings or revenue continuity.

Key takeaways

• Magento's annual maintenance cost typically runs $15,000, $50,000; BigCommerce's SaaS model can reduce total cost of ownership by up to 60%.
• Adobe launched Adobe Commerce as a Cloud Service (ACCS) in June 2025, a move that is forcing many on-premise merchants to replatform whether they want to or not.
• Magento 2 URL patterns do not match BigCommerce defaults; every live URL needs a 301 redirect mapped before DNS changes.
• Automated migration tools (Cart2Cart, LitExtension) handle stores up to roughly 5,000 SKUs reliably; above that, API-based or agency-led migrations are safer.
• Most businesses complete a Magento to BigCommerce migration in two to four weeks for data transfer, with an overall project running 8-16 weeks from planning to post-launch monitoring.

Why merchants are leaving Magento right now

The Magento cost structure is the primary driver. Typical annual maintenance costs sit between $15,000 and $50,000 just to keep a Magento store running, covering hosting, security patches, and developer retainers. Adobe Commerce (the paid version) adds licence fees starting at approximately $22,000 per year for stores under $1M GMV, scaling significantly with revenue.

BigCommerce's SaaS subscription includes hosting, security, and platform updates in a predictable monthly fee. The BigCommerce pricing tiers run from $39/month (Standard, up to $50,000 in annual sales) to $105/month (Plus, up to $180,000) and $399/month (Pro, up to $400,000), with Enterprise pricing negotiated above that. The total cost reduction versus a comparable Magento setup is frequently cited at 40-60%.

There is also a talent-pool argument. The pool of Magento-specialist developers has been contracting relative to newer platforms, and Adobe's own product roadmap has added urgency. Adobe launched Adobe Commerce as a Cloud Service (ACCS) in June 2025, a fully managed multi-tenant SaaS model that sits alongside the existing PaaS offering. Moving to ACCS is not a version upgrade; it is a full platform re-architecture. Luma storefronts are not supported, all customisations must move to App Builder and API Mesh, and the extension ecosystem on Adobe Exchange currently holds fewer than 100 apps compared to Magento's marketplace of 4,000+. For merchants already facing a forced rebuild to stay current on the Adobe platform, switching to BigCommerce often adds less effort than rebuilding within the Adobe ecosystem.

Is BigCommerce the right destination?

BigCommerce is the right choice when the store is overspending on server management, security patching, extension conflicts, and developer retainers just to keep core commerce stable. It is a weaker fit when the business depends on advanced checkout branching, complex account hierarchies, or deep ERP integrations that still require custom APIs and middleware regardless of platform.

A few specific considerations:

• Catalog size: BigCommerce Enterprise can handle 400+ API calls per second and up to 30,000 SKUs out of the box. Magento Open Source scales higher on raw product count (250,000+ products cited) but requires custom hosting optimisation to do so reliably.
• B2B functionality: BigCommerce includes native B2B features (company accounts, price lists, purchase order workflows) that work without custom development. Magento/Adobe Commerce offers deeper configurability but at significantly higher licence and implementation cost.
• Multi-storefront: BigCommerce's Multi-Storefront feature lets you manage multiple branded stores from one backend, which simplifies international expansion without duplicating backend operations.
• App ecosystem: BigCommerce has over 1,300 apps in its marketplace. Magento has 4,000+. If your current stack depends on extensions with no BigCommerce equivalent, budget $200, $2,000 per critical app for custom replacement work.

The three migration methods and when to use each

1. Automated migration tools (Cart2Cart, LitExtension)

These SaaS tools connect directly to your Magento source and BigCommerce target via API, migrate products, customers, orders, and categories, and complete transfers in hours. Pricing runs $69, $299 depending on store size. They work well for stores with fewer than 5,000 SKUs, clean data, limited customisations, and standard product configurations. Above that threshold, or with bundled products and a stack of custom extensions, an API-based or agency-led approach is the safer call.

One specific caution: Magento exports consistently include encoding errors, duplicate attribute values, and broken image paths. Import that source data without cleaning it first and your BigCommerce catalogue will be unusable before you have started testing.

2. Manual CSV migration

Free but developer-intensive. You export from Magento via System > Data Transfer > Export, reshape the CSV column headers to match BigCommerce's schema, and import. Realistic developer time for a mid-size store runs 40-80 hours. Reserve this approach for very small catalogues or when you need granular control over the data transformation.

3. Agency or partner-led migration

For stores with complex product structures, extensive customisations, large data volumes (50,000+ products), or critical integrations, a BigCommerce partner doing full-service migration is appropriate. Investment typically runs $3,000, $25,000 depending on complexity. This route includes comprehensive data auditing, custom data transformation, integration testing, SEO redirect implementation, and post-launch support.

The data transfer checklist

At minimum, a Magento to BigCommerce migration covers:

• Products and catalogue: SKUs, descriptions, pricing, variants, images, and categories. Double-check your import tools; duplicate SKUs from incorrect settings are one of the most common post-migration problems.
• Customers: Account data transfers, but customer passwords do not. BigCommerce and Magento use different hashing algorithms. Plan a password reset email sequence before launch or you will watch returning customer logins drop for weeks.
• Orders: Historical order data can be migrated for records and reporting.
• Reviews and ratings: Worth migrating to preserve social proof. LitExtension handles reviews in its standard transfer.
• Media assets: Images and PDFs need careful post-import verification. BigCommerce provides solid image management but always confirm after import.
• CMS pages: Meta titles, descriptions, and alt texts must be imported meticulously. BigCommerce's built-in SEO fields make this manageable if you do not rush it.
• Magento themes: These cannot be migrated. Plan and budget for a new BigCommerce Stencil theme as a separate workstream.

Protecting your SEO during the migration

This is where most migrations bleed organic traffic. Magento 2 URL patterns do not match BigCommerce defaults. Going live without a full URL map and 301 redirects in place means the organic traffic you have built over years can evaporate within a week.

The data is unambiguous: sites with 99%+ redirect coverage see less than 5% traffic loss post-migration; those below 95% coverage lose an average of 23% of organic traffic.

What to do:

1. Crawl your entire Magento store with Screaming Frog or Sitebulb before touching anything and export every indexed URL.
2. Cross-reference that list against 12 months of Google Search Console data to identify the highest-traffic URLs that absolutely cannot be missed.
3. Build a 1:1 redirect map: every old URL to its closest equivalent new URL. Do not redirect discontinued products to the homepage; use a clean 404 or 410 instead, not a soft 404 that creates indexing noise.
4. Import the full redirect map into BigCommerce's redirect manager (via CSV; it supports up to 25,000 redirects) before updating DNS settings.
5. Lower your DNS TTL to 60 seconds approximately 72 hours before cutover. This shortens recovery time if you need to roll back DNS.
6. After launch, submit your new XML sitemap to Google Search Console and monitor the Coverage report daily for the first two weeks.

For a complete technical SEO framework once you are on BigCommerce, see the Shopify SEO guide for transferable principles, and if you later move to a Shopify-based stack, the Shopify migration service overview covers the Shopify-specific steps.

Integration mapping: the step teams always underestimate

Every Magento extension needs a BigCommerce equivalent. Catalogue the full integration stack before migration: ERP connections, email marketing platforms, SMS providers, review systems, loyalty programmes, shipping calculators, tax engines, and payment gateways.

BigCommerce natively supports 40 payment gateways and includes integrations with Amazon, eBay, Google, and social channels. Magento offers three out-of-the-box gateways with more via API, plus a marketplace of 4,000+ extensions. For each Magento extension with no direct BigCommerce app equivalent, budget $200, $2,000 for custom development. Fifteen critical extensions can easily hit $10,000 in replacement costs, a line item frequently absent from migration quotes.

Cutover and the 72-hour window

Zero-downtime migration requires running both platforms simultaneously, not just faster data imports. The practical sequence:

• T-72 hours: Lower DNS TTL. Run final data sync.
• T-24 hours: Final integration test on staging with production-equivalent data.
• Cutover: Change your domain A record to point to BigCommerce's IP. Approximately 25% of traffic still resolves to the old IP in the first 12 hours, so keep your old Magento store operational for 48-72 hours post-cutover.
• T+24 hours: Verify DNS propagation is complete. Submit new sitemap. Monitor Search Console Coverage report.
• T+30 days: Decommission old platform only after zero orders at the old platform for 48 consecutive hours and all historical data is backed up.

Post-migration optimisation

Once live, the immediate priorities are:

• Performance benchmarks: Target homepage load under 2 seconds, product pages under 2.5 seconds. BigCommerce's SaaS infrastructure generally handles this without custom server tuning.
• SEO stabilisation: Some ranking volatility in the first few weeks is normal as Google recrawls and reindexes the new URL structure. By week four, organic traffic should be approaching pre-migration levels. If it is not, audit redirects for gaps and check metadata preservation.
• Team onboarding: Your operations and customer service teams who knew Magento admin cold will need onboarding on BigCommerce. Budget at least 10 hours of structured onboarding time in the first 30 days. Rarely included in migration quotes; routinely the cause of post-launch support escalations.

When BigCommerce is not the answer

Not every frustrated Magento merchant should move to BigCommerce. If your store is stable, profitable, and supported by a capable internal technical team, a platform change may not be the right call yet. Highly customised catalogues, unusual pricing rules, and deep back-office dependencies can keep migration scope high enough that staying on Magento remains rational, at least until a natural rebuild trigger arrives.

Stores with annual revenue reliably above $500K, complex B2B workflows requiring core code modifications, or tight ERP integrations that mandate custom APIs may find that Magento (particularly Adobe Commerce on Cloud PaaS) or a composable architecture suits them better than a SaaS move in either direction.

The decision is a total cost of ownership calculation, not a feature comparison. Calculate your full three-year cost including development, hosting, maintenance, extensions, and team resources on both platforms, then compare.