Migrating to Shopify Plus: Costs, Timeline, and What to Expect

Businesses migrate to Shopify Plus for a specific set of reasons: checkout customization that isn't available on standard plans, native B2B functionality, room to run multiple storefronts, higher API limits, and dedicated support for high-volume selling. The migration itself — whether that's upgrading in place from a standard Shopify plan or moving over from another platform entirely — is a bigger project than a typical Shopify build, with its own cost structure, timeline, and failure points. This guide covers what to actually expect.

Why businesses upgrade to Plus specifically

These are the features that don't exist below Plus, not general Shopify benefits:

• Checkout customization — the Checkout Branding API, Shopify Functions, and UI extensions for building custom checkout logic (shipping rules, payment customizations, upsells) are Plus-only. On standard plans, checkout is largely fixed.
• Native B2B — company accounts, unlimited price lists and catalogs, location-level pricing, and deposits/partial payments. (B2B functionality itself now exists on every Shopify plan, not just Plus — see our guide to B2B on Shopify for what's available at each tier. Plus adds the highest catalog limits and the most granular controls.)
• Multi-store — one main store plus up to nine expansion stores, useful for multi-brand portfolios, regional storefronts, or separating B2B from DTC.
• Higher and adjustable API rate limits, plus Plus-exclusive APIs, which matter once integrations (ERP, PIM, custom apps) start hitting standard-plan ceilings.
• Launchpad for scheduling and automating high-traffic launches or flash sales without manual intervention.
• Unlimited staff accounts with custom permission groups, and a dedicated Shopify Plus support/merchant success relationship.

Two migration paths

There are two fundamentally different projects hiding under "Shopify Plus migration":

Upgrading in place

If you're already on Shopify (Basic, Grow, or Advanced), moving to Plus is a plan upgrade, not a platform migration — your store, theme, apps, and data stay put. The work is mostly about adopting the Plus-specific features you're upgrading for (checkout customization, B2B setup, multi-store structure) rather than moving data. This is the fastest path, typically weeks rather than months.

Migrating from another platform

Moving from Magento, BigCommerce, WooCommerce, Salesforce Commerce Cloud, or a custom-built platform directly to Plus is a full replatform: product catalog, customer records, order history, theme/design, and any custom integrations all need to move. This is a materially bigger project, and the source platform matters — migrating from another ecommerce platform with a similar data model is more straightforward than migrating off something with deep custom logic (SAP Hybris, a heavily customized Magento instance, or homegrown systems).

What it costs

Shopify Plus starts at $2,300/month on a 3-year term (or $2,500/month on a 1-year term), which is the current publicly listed rate. Above roughly $800,000 in monthly sales, billing shifts to a variable platform fee of about 0.35–0.40% of revenue, capped at $40,000/month. Worth knowing going in: Plus is ultimately enterprise, quote-based pricing — the published figure is a starting point, and the number a given business lands on can vary with negotiated terms.

That's the platform fee, not the migration cost. The migration project itself — discovery, data migration, theme/checkout build, integration work, testing — is a separate line item that scales with source-platform complexity and how much custom functionality needs to be rebuilt or replaced.

How long it actually takes

These are directional ranges based on typical agency-led projects, not an official Shopify-published timeline — actual timelines vary with catalog size, integration complexity, and how much of the theme/checkout is custom-built versus off-the-shelf:

• Upgrading from Shopify Advanced to Plus: roughly 6–10 weeks.
• Migrating from WooCommerce or BigCommerce: roughly 12–16 weeks.
• Migrating from Magento: roughly 16–20 weeks.
• Migrating from Salesforce Commerce Cloud, SAP Hybris, or a similarly complex enterprise platform with heavy ERP/EDI integration: roughly 20–28 weeks.

Add 2–4 weeks of post-launch stabilization on top of any of these, and budget for a temporary dip in organic search traffic during the transition — SEO recovery after a full replatform commonly takes a few months even when redirects are handled correctly, simply because search engines need to recrawl and re-index the new site structure.

The migration process

1. Audit and scope. Inventory the current store: product catalog structure, customer data, order history, active integrations, and any checkout customizations that need Plus-only functionality to replicate.
2. Plan the data migration. For platform-to-platform moves, tools like Matrixify handle bulk product, customer, and order data import; complex integrations (ERP, PIM) usually need custom migration scripts rather than an off-the-shelf importer.
3. Rebuild the theme and checkout. This is where most of the Plus-specific value gets built — checkout branding, Shopify Functions for custom logic, and any B2B catalog/pricing structure.
4. Set up redirects before launch, not after. Every URL that's changing needs a mapped 301 redirect to preserve existing search rankings and any inbound links — this is the step most commonly rushed, and the one most responsible for a bad post-migration traffic dip.
5. Test the full buyer journey with real payment methods, real shipping rates, and — if B2B is part of the build — a real company account with price lists and payment terms, not just the storefront checkout.
6. Launch and stabilize. Monitor conversion rate, page speed, and search visibility closely for the first few weeks; this is when integration issues and edge cases in pricing or shipping logic tend to surface.

If you're migrating specifically for B2B

B2B functionality is one of the most common reasons to move to Plus, but it's worth knowing that company accounts, catalogs, and price lists are available on every current Shopify plan, not Plus exclusively — Plus mainly raises the ceiling (catalog limits, more granular permissions) rather than being the only way in. If B2B is the main driver for your migration, the setup details — company accounts, blended vs. dedicated stores, payment terms, what's on each plan tier — are covered in full in our guide to B2B on Shopify. This page focuses on the migration project itself.

Common pitfalls

• Underestimating the redirect map. A missed batch of redirects is the single most common cause of a post-migration organic traffic drop, and it's avoidable with a proper URL audit before launch.
• Treating checkout customization as an afterthought. It's usually the reason a business is paying for Plus in the first place, but scoping it late in the project leads to rushed, under-tested checkout logic.
• Assuming data migration is a clean export/import. Product variants, historical order data, and customer accounts rarely map 1:1 between platforms — plan time for cleanup, not just transfer.
• Skipping a real B2B test account. If B2B is part of the build, testing only the consumer checkout misses the price-list, payment-terms, and approval logic that's actually new.

Frequently asked questions

How much does Shopify Plus cost?

The platform fee starts at $2,300/month on a 3-year term ($2,500/month on a 1-year term), shifting to a variable revenue-based fee (roughly 0.35–0.40%, capped at $40,000/month) above about $800K in monthly sales. That's separate from the cost of the migration project itself, which depends on source-platform complexity.

How long does a Shopify Plus migration take?

An in-place upgrade from Shopify Advanced typically takes 6–10 weeks. A full replatform from another system ranges from about 12 weeks (WooCommerce/BigCommerce) to 20–28 weeks (complex enterprise platforms with heavy ERP/EDI integration), plus post-launch stabilization time.

Will migrating to Shopify Plus hurt SEO?

Not if redirects are mapped and implemented correctly before launch — but expect a temporary dip regardless, since search engines need to recrawl and re-index the new site. A properly executed migration typically recovers within a few months; a rushed one without a redirect audit can lose rankings permanently.

Do I need an agency to migrate to Shopify Plus?

Simple in-place upgrades are manageable in-house. Full replatforms — especially with ERP integration, custom checkout logic, or a large product catalog — carry enough failure points (data loss, broken redirects, checkout bugs) that most businesses use an agency or Shopify's own Plus launch resources rather than handling it entirely internally.

The bottom line

A Shopify Plus migration is a bigger project than most businesses expect going in — the platform fee is the easy number to find; the migration cost, timeline, and risk depend entirely on what's being moved and how much needs to be rebuilt. Scope the redirect map and checkout customization early, and budget the timeline in months for a full replatform, not weeks.

First Pier is a Shopify Plus agency in Portland, Maine, and has migrated stores onto Plus from Magento, WooCommerce, BigCommerce, and custom platforms alike. See our migration services, or get in touch to scope your migration.