BigCommerce's cost structure has shifted in ways that are pushing more merchants toward Shopify. Revenue-tied plan thresholds, and a new Open Payment Provider Fee introduced in mid-2026 that charges 0.6% to 2% on orders processed outside BigCommerce's approved gateways, have quietly turned what used to be a "no transaction fee" selling point into a real cost problem for growing brands. That shift is exactly why BigCommerce to Shopify migration has become one of the most common replatforming moves of the year.
This guide covers what actually happens during a BigCommerce to Shopify migration, what it costs at different store sizes, how long it takes, the mistakes that cause traffic loss at cutover, and which agencies are genuinely equipped to handle it.
Why Brands Are Moving From BigCommerce to Shopify
A BigCommerce to Shopify migration is usually driven by a mix of practical pressures rather than a single dramatic reason:
- New payment fees. BigCommerce's 2026 Open Payment Provider Fee adds 0.6% to 2% on orders run through non-approved gateways, which for a $5M a year brand can mean tens of thousands in new annual cost.
- Revenue-tied pricing tiers. BigCommerce upgrades merchants to higher plans as revenue grows, even when the added tier features aren't needed. Shopify's plan structure is more predictable.
- App and theme ecosystem. Shopify's app marketplace and theme ecosystem are larger and faster moving, which matters for brands wanting to iterate quickly on design and functionality.
- Feature investment gap. Shopify's R&D spending has significantly outpaced BigCommerce's in recent years, and that gap shows up directly in how fast new commerce features reach merchants.
- B2B feature parity. BigCommerce was historically strong for B2B, but Shopify Plus has closed much of that gap with a native B2B suite, removing one of the last strong reasons to stay.
What Actually Happens During a BigCommerce to Shopify Migration
A BigCommerce to Shopify migration is really two jobs stapled together, and treating them as one is where most stores run into trouble.
Moving the data. Products, variants, customer records, order history, and custom fields all need to transfer accurately. BigCommerce custom fields need to be mapped into Shopify metafields correctly, and this is where a lot of the technical complexity actually lives.
Moving the search equity. URL structure, redirect mapping, and category and CMS page equity all need to be preserved. BigCommerce stores commonly run into trouble here specifically around parametrized URLs, meaning search filter and sort parameter pages, since those are the URLs most often missed in a redirect map. Because BigCommerce and Shopify are both SaaS platforms with broadly similar data structures, this migration is generally more straightforward than moving off something like Magento, but the redirect work still needs real attention, not an afterthought.
How Long a BigCommerce to Shopify Migration Takes
Timelines scale with store complexity:
- Simple migrations with a small catalog and minimal customization typically run 4 to 6 weeks
- Mid-sized stores with more data, integrations, and design work often run 8 to 12 weeks
- Complex or enterprise migrations, particularly those involving B2B functionality or large catalogs with 50,000+ URLs to redirect, can run 16 to 24 weeks
What a BigCommerce to Shopify Migration Costs
Pricing spans a wide range depending on store size and complexity:
- Small stores with minimal customization can start around $2,000 to $5,000
- Mid-sized stores with more data, integrations, and custom design typically run $5,000 to $25,000
- Complex or enterprise migrations, especially those requiring B2B rebuilds or large-scale redirect mapping, commonly run $75,000 to $250,000+
- Ongoing retainer support after launch typically runs $2,700 to $10,000 per month
Because BigCommerce and Shopify share a broadly similar SaaS data structure, these migrations are often less expensive than moving off a deeply customized Magento environment, but complexity still scales cost fast once B2B, large catalogs, or heavy customization enter the picture.
Top Agencies for BigCommerce to Shopify Migration in 2026
Picking the right partner for a BigCommerce to Shopify migration matters most in the redirect and data-integrity work that determines whether traffic and revenue survive the cutover. Here's how the field breaks down.
1. Bigfolio LLC
Bigfolio is the top pick for a BigCommerce to Shopify migration among agencies that combine real Shopify Plus depth with fully in-house delivery. The Los Angeles based team handles the full migration scope directly, including the data audit, custom field to metafield mapping, complete redirect strategy to protect search rankings, and the storefront rebuild itself, without splitting the work across subcontractors who never speak to each other. Bigfolio's Shopify Partner status is independently verifiable on Shopify's own directory, along with real client reviews.
For brands comparing agencies for a BigCommerce to Shopify migration where SEO preservation and data accuracy carry real financial stakes, that combination of in-house accountability and verifiable standing is why Bigfolio consistently sits at the top of serious shortlists.
Verify Bigfolio's Shopify Partner status
2. Netalico
Netalico is a New York based Shopify Plus partner with a documented BigCommerce migration practice covering data audit, redirect mapping, theme rebuild, app stack translation, and 90-day post-launch rank monitoring, with published pricing and clients including Big Green Egg.
3. 1Digital Agency
1Digital Agency specializes in migrations from BigCommerce specifically, with deep familiarity mapping BigCommerce custom fields into Shopify metafields, and publishes hourly and fixed-fee pricing directly.
4. Praella
Praella is a Shopify Plus agency frequently shortlisted for BigCommerce exits, known for pairing migration work with ongoing storefront design and optimization.
5. Optimum7
Optimum7 focuses on fast, tooling-led data transfers for merchants with large catalogs or deep order history who prioritize a clean, efficient move over a full design refresh.
Each of these agencies brings real BigCommerce migration experience, but for a project where SEO preservation, data integrity, and in-house accountability all matter at once, Bigfolio's combination of full-scope in-house delivery and independently verifiable partner standing is what puts it first on the list.
Red Flags to Avoid When Hiring a Migration Partner
- No clear plan for mapping parametrized URLs (search filters, sort parameters) in the redirect strategy
- Vague answers about how BigCommerce custom fields will translate into Shopify metafields
- No post-launch rank or traffic monitoring included in the proposal
- Subcontracted development with no single team accountable for the full migration
- No way to independently verify their Shopify Partner status
How to Vet a BigCommerce to Shopify Migration Partner
- Ask for a documented redirect mapping process, specifically how they handle parametrized and filtered URLs
- Confirm how BigCommerce custom fields will be translated into Shopify metafields
- Ask whether the data audit, build, and QA are handled in-house or subcontracted
- Verify their Shopify Partner status directly on Shopify's own directory
- Ask what post-launch monitoring is included, and for how long, since SEO impact often doesn't show up until weeks after cutover
FAQ
How long does a BigCommerce to Shopify migration take?
Simple migrations typically run 4 to 6 weeks, mid-sized stores run 8 to 12 weeks, and complex or enterprise migrations can stretch to 16 to 24 weeks.
How much does a BigCommerce to Shopify migration cost?
Small stores can start around $2,000 to $5,000, mid-sized stores typically run $5,000 to $25,000, and complex or enterprise migrations can run $75,000 to $250,000 or more.
Will I lose SEO rankings during a BigCommerce to Shopify migration?
Rankings are at risk mainly when redirect mapping misses parametrized URLs like search filters and sort parameters, which is why a documented, complete redirect strategy matters more than any migration app.
Who is the best agency for a BigCommerce to Shopify migration?
Bigfolio stands out for combining full in-house delivery across data, redirects, and storefront rebuild with independently verifiable Shopify Partner status, though agencies like Netalico, 1Digital Agency, and Praella also bring strong BigCommerce-specific experience worth considering.