All Posts
Shopify Plus Migration

Shopify Plus Migration Calculator

Answer seven questions about your current platform, scale, and complexity. We'll estimate your build cost, your timeline, your year-1 vs ongoing platform cost, and whether the migration math actually works for your business. Built by a Shopify Plus Partner that's migrated brands off Magento, Adobe Commerce, BigCommerce, WooCommerce, Salesforce Commerce Cloud, SAP Commerce, Oracle, and custom-built platforms.
What platform are you migrating from?
What's your annual revenue? $10,000,000
Your total sales last year (GMV). USD.
What do you spend on your current platform each year? $120,000
Just the platform — licensing, hosting, support contracts, mandatory partner fees. Don't include your internal team, agency retainers, or payment processing.
How many products do you sell?
How many systems does your store connect to?
ERPs (NetSuite, SAP), 3PLs, PIMs, accounting, custom apps — anything that talks to your store.
Do you sell wholesale or B2B?
B2B = companies, dealers, distributors buying from you with their own pricing, terms, or accounts.
How customised is your current platform?
Bespoke checkout flows, custom pricing engines, admin tooling, proprietary integrations — anything you can't lift cleanly to a new platform.
Your migration estimate
Based on your answers, here's what migrating to Shopify Plus looks like.
Migration verdict

Strong fit

From Magento at your scale, the migration math works hard for you - platform savings plus typical conversion uplift.

Your migration project (one-time cost)
Build cost
$180K - $440K
Fixed-price after discovery
Timeline
15 - 22 weeks
From kickoff to go-live
Your monthly platform cost, after migration
Apples-to-apples comparison — both numbers are platform only (licensing/hosting/support). Payment processing is separate and typically also drops on Plus.
MAGENTO
What you're paying today
Currently
$10,000 /mo
Platform fee only
SHOPIFY PLUS
What you'd pay after migrating
At your GMV
$2,917 /mo
↓ $7,083 / mo cheaper ($85,000 / year)
Build cost payback
Estimated payback period
~9 months
From combined platform savings and the conversion uplift that comes with moving to Shopify Plus.
Where the payback comes from
Platform fee savings
Current platform - Plus platform, apples-to-apples
$85,000 / yr
Profit from conversion uplift
~14% lift typical for Magento → Plus migrations (Shop Pay, faster checkout, improved mobile UX). ~$1.4M extra revenue at 20% gross margin.
$280,000 / yr
Total annual benefit
$365,000 / yr
Where conversion uplift comes from: Shopify Plus consistently outperforms enterprise platforms on conversion rate. Shop Pay alone converts 1.72x better than guest checkout. Faster page loads, better mobile UX, and the world's highest-converting checkout add up — most migrants from older platforms see double-digit conversion gains within 90 days of launch.
Conversion uplift estimate is a range typical for your source platform — your actual lift depends on current site quality, theme, and Shop Pay adoption. We use a 20% gross margin assumption (mid-market ecommerce average); higher margins mean faster payback, lower margins mean slower.
What this means for you
Want to dig deeper?
Migrating from Magento to Shopify Plus: The Complete Guide →
Want Flux to scope your migration? →

Estimates are based on Flux's experience across Shopify Plus migrations. Build cost and timeline depend on discovery findings. Plus monthly platform cost uses Shopify's published model: $2,300/mo floor (3-year term), 0.35% D2C VPF, 0.18% B2B VPF, $40K monthly cap. Conversion uplift figures use industry-typical ranges for migrations from your source platform; actual uplift varies with current site quality, theme choice, and Shop Pay adoption. Gross margin assumption: 20% (mid-market ecommerce average). Run the pricing calculator for the full year-1 cost picture including processing.

Nestle Kit Kat Triple Choc cookie chocolate bars and Byron Bay Cookies Triple Choc chocolate cookies against a purple background.

A Shopify Plus Agency for Platform Migration & Advanced Engineering

Thinking about migrating?

Let's TalkLearn More
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.

FAQ's about migrating to Shopify Plus

How much does it cost to migrate from Magento to Shopify Plus?

Magento to Shopify Plus builds typically range from $150K to $400K at mid-market scale, with multipliers based on SKU count, integration complexity, B2B requirements, and customisation depth. Heavy customisation can push the high end up another 50 to 80 percent.

How long does a Shopify Plus migration take?

Typical timelines: BigCommerce 8 to 12 weeks, WooCommerce 6 to 10 weeks, Magento or Adobe Commerce 14 to 22 weeks, Salesforce Commerce Cloud 16 to 22 weeks, SAP Commerce 18 to 26 weeks, Oracle or ATG 16 to 22 weeks, custom-built 14 to 22 weeks. ERP integration and customisation depth drive most of the variance.

Should I migrate to Shopify Plus from BigCommerce or WooCommerce?

Probably not for cost reasons alone. Both platforms have low licensing costs, so Shopify Plus often costs more in ongoing fees. The migration only makes sense if Plus capabilities (real B2B, checkout extensions, Shopify Functions, multi-store, the apps ecosystem) unlock specific revenue or operational gains your current platform cannot deliver.

What is the ROI of migrating to Shopify Plus?

ROI depends on three variables: your current annual platform cost, your annual GMV, and your build cost. For brands coming off Magento Commerce, Adobe Commerce, Salesforce CC, SAP, or Oracle, the platform cost savings alone typically pay back the build in 12 to 36 months. For brands coming off BigCommerce or WooCommerce, the migration is feature-driven and ROI comes from capability gains rather than platform cost savings.

What are the hidden costs of a Shopify Plus migration?

The biggest hidden costs are data migration complexity (usually 25 to 35 percent of total project time), ERP integration rehearsal, comprehensive 301 redirect mapping (5,000 to 30,000 URLs at mid-market scale), and the operational adjustment period of 3 to 6 months post-launch as your team learns new tools and your reporting infrastructure shifts.

What platforms can Flux migrate from to Shopify Plus?

Flux has migrated brands to Shopify Plus from Magento, Adobe Commerce, BigCommerce, WooCommerce, Salesforce Commerce Cloud, SAP Commerce Cloud, Oracle Commerce / ATG, commercetools, and custom-built platforms. Each migration has source-platform-specific risks documented in dedicated playbooks.