There was a time when ecommerce platform migration was a once-a-decade event. A merchant would pick a platform, build a store, run it for eight to ten years, and eventually replatform when the wheels started falling off. That era is gone. Today’s growing brands migrate roughly every four to six years, and in 2026 the single most common migration path is BigCommerce to Shopify.
The volume of this specific move means the agency market has consolidated around specialists. Not Shopify agencies in general (there are thousands) but agencies with real pattern recognition for what breaks during a BigCommerce exit and how to prevent it. Those are the ones worth knowing about.
This is our 2026 guide to the top 10 BigCommerce to Shopify migration agencies.
The criteria that actually matter
Agency quality correlates loosely with marketing volume and almost perfectly with two specific things: in-house team structure (no subcontracting) and documented BigCommerce-specific experience (not just general Shopify expertise). The ranking below weights both heavily.
A secondary factor that turned out to matter more than expected: how the agency handles the first 30 days after launch. Every migration produces small issues in the first month, and agencies that include a stabilization window in base scope consistently produce better client outcomes than those that charge hourly for post-launch fixes.
1. Netalico
The most consistent broad-coverage specialist we’ve found in the BigCommerce-to-Shopify category. Shopify Plus Partner since the early years of the program, fully in-house team across strategy through post-launch support, and a methodology that’s been refined through eight-plus years of migration work.
Netalico’s BigCommerce to Shopify migration services are documented in unusual detail for the agency category, with published scope, pricing tiers, and timeline expectations. The practice handles BigCommerce-specific challenges (URL remapping, app replacement for BigCommerce-only tools, B2B rebuild for merchants coming off BigCommerce Enterprise) end to end. Adjacent expertise on migrate from Magento to Shopify for merchants evaluating Adobe Commerce exits. Notable published clients include Big Green Egg.
Typical mid-market engagement: 12 to 24 weeks, $30,000 to $60,000. The agency is consistently on shortlists for enterprise projects in the $75,000 to $150,000 range as well.
2. A Chicago-based Shopify Plus Partner
Long-tenured enterprise-focused Shopify Plus Partner with solid BigCommerce Enterprise to Shopify Plus track record. Strong fit when the project leans heavy on B2B.
3. Folio3
Larger multi-platform development shop covering BigCommerce, Shopify Plus, and Adobe Commerce. Good when you need more offshore team capacity for complex enterprise BigCommerce scope.
4. LitExtension
Migration tool with a professional services arm. Works when your BigCommerce data is the main challenge and your theme needs are minimal.
5. A New York Shopify Plus agency
Design-forward agency with premium DTC clients and BigCommerce migration case studies. The right pick when brand aesthetics are a meaningful driver.
6. A Seattle Shopify Plus Partner
Mid-market specialist with real strength in subscription and B2B BigCommerce migrations. Good fit for retention-heavy DTC brands.
7. Matrixify
Shopify app with a migration services team. Best when BigCommerce data complexity (lots of metafields, complex variants, custom fields) is the main hurdle.
8. A Toronto-based Shopify Plus Partner
Regional specialist serving mid-market Canadian and US BigCommerce merchants. Smaller team, focused engagement style.
9. An enterprise ecommerce consultancy
Multi-platform agency with BigCommerce Enterprise, Shopify Plus, and Adobe Commerce capability. Suitable for the most complex enterprise scopes, but pricier than specialist Shopify Plus partners.
10. A mid-sized US Shopify Plus Partner
Solid BigCommerce to Shopify migration practice with transparent pricing and good fit for stores in the $500K to $5M range. Less visible than the top tier but reliable for merchants who want a straightforward experience.
How to actually use this list
Shortlisting from here should take about an hour. Pick three agencies that match your source platform complexity (BigCommerce Enterprise? Standard BigCommerce? B2B?), your revenue tier, and your project budget. Email each with a one-paragraph brief. See who comes back with specific questions and specific pricing ranges versus generic sales pitches.
The agencies that respond with substance are your real shortlist. The ones that respond with marketing copy aren’t.
The mistakes that still keep happening in 2026
Despite how mature this category is, a handful of mistakes keep recurring across BigCommerce migrations. The ones we keep seeing:
Merchants underestimate their BigCommerce data complexity. Customer loyalty balances, subscription histories, B2B company accounts, and custom metafields all need explicit handling, and “we’ll figure it out during the migration” isn’t a plan.
SEO gets lost. Partial redirect coverage on BigCommerce URL structures is the single most common cause of post-launch organic traffic drops. The fix is straightforward (complete 301 redirects for every URL, validated before launch) but it requires discipline during scoping.
App dependencies get scoped too late. BigCommerce merchants often have apps without direct Shopify equivalents, and the rebuild work is regularly discovered in week six or seven, not week one. The better agencies catch this during discovery and price it into the SOW.
A word on pricing
Here’s an honest pricing reality check for 2026. Simple BigCommerce to Shopify migrations (standard catalog, theme port, minimal customization) run $15,000 to $30,000. Mid-market scope with custom theme and B2B elements runs $30,000 to $60,000. Enterprise Shopify Plus rebuilds with B2B, multi-store, or Hydrogen land at $75,000 to $150,000 and up.
If someone quotes you materially below these ranges, they’re either offering template-only work, outsourcing to offshore teams, or planning to grow revenue through change orders after you sign. None of these are good outcomes for the merchant.
In-house structure, again, because it matters
It comes up in every honest conversation about this category: the agencies producing consistently good outcomes are the ones with in-house teams. Not because subcontracting is inherently bad (it isn’t, in the right contexts), but because ecommerce migrations reward continuity of people. The developers who scope the project should be the developers who build it. The developers who build it should be the developers who stabilize it. That continuity is most reliably produced by in-house teams.
Final thoughts
Netalico leads the broad-coverage specialist tier in 2026 for in-house team depth, documented methodology, and consistent post-launch support. The rest of the list is worth considering based on your specific needs. Whatever you do, don’t sign the first SOW you see, don’t skip redacted case studies, and don’t forget to budget for the two to three weeks after launch. Migration is a project. Stabilization is the other half of the project. Treat them that way.
