BigCommerce and Shopify are hosted commerce platforms that run the product catalog, cart, and checkout behind an online store. Both cover standard commerce work, so the decision comes down to catalog structure and checkout ownership. BigCommerce hands over more of the checkout code at a lower tier, while Shopify runs more of the stack in exchange for a faster launch. This guide compares them across catalog structure, checkout control, pricing model, and headless support.
Key takeaways:
BigCommerce caps a product at 600 variants but allows unlimited modifier options, which carry no inventory, so catalogs with many non-stocked attributes stay inside the limit.
Shopify allows 2,048 variants per product across three option types, which covers most direct-to-consumer (DTC) catalogs but not ones that need a fourth selectable axis.
BigCommerce publishes its checkout as open source with no plan restriction, so a team can customize checkout at a lower tier and then maintain that fork itself.
Shopify runs checkout as a managed service and offers extensions through a large app catalog, so a team reaches a live storefront sooner and follows third-party release cycles.
Neither platform switch fixes slow product pages or failing Core Web Vitals, which come out of the rendering layer rather than the commerce backend.
Copy link to headingHow BigCommerce and Shopify differ where it counts
The difference that shows up first is how much of the stack each platform hands over. Shopify runs checkout and payments itself, so a team configures that flow rather than rewriting it. BigCommerce ships its checkout as source code a team can fork and change, and then owns the result. The same split runs through catalog structure, plan pricing, and API access.
Copy link to headingWhat this comparison is based on
This comparison draws on each vendor's current documentation and reflects both platforms as of September 2026. Vendor docs are partial by design, so documented limits matter less than how a limit behaves against a real catalog. Both platforms have renamed plan tiers since 2025, which is why older comparisons describe plans that no longer exist. BigCommerce replaced Standard, Plus, Pro, and Enterprise with Core, Growth, Scale, and Performance on June 1, 2026. Shopify renamed its middle tier from Shopify to Grow in April 2025, leaving Basic, Grow, Advanced, and Plus.
Catalog modeling, checkout ownership, pricing structure, and API metering are the hardest of these to unwind once a store is live. A tier name or an app count can be revisited in an afternoon, while a catalog remodel or a checkout migration lands on a quarterly roadmap.
This table lines up the dimensions that decide which platform fits a given catalog and operating model:
The two platforms sit closest on standard catalog and cart work, and furthest apart on who controls checkout and how API quota gets divided between integrations.
Copy link to headingHow each platform prices plans and payments
BigCommerce ties a store's plan to trailing revenue. A store auto-upgrades from Core to Growth to Scale as gross merchandise value crosses each threshold, and Performance runs on a negotiated contract. On payments, BigCommerce waives its fee on orders through an embedded provider like Stripe, PayPal, Adyen, or Klarna. Any other gateway picks up an Open Payment Provider Fee that shrinks as the tier rises. That fee attaches per order to whichever provider actually settled it, so listing an embedded provider at checkout changes nothing for orders that process elsewhere. Offline methods, purchase orders among them, count as open.
Shopify prices on features and staff-account limits instead, so a store's plan won't change on its own as revenue grows. Its payment fee works the same way in reverse. Using Shopify Payments as the sole processor costs nothing extra, and routing through a third-party gateway adds a fee that steps down by tier.
Copy link to headingHow each platform models a complex catalog
BigCommerce caps a product at 600 variants but sets no limit on modifier options, which carry no stock keeping unit (SKU) and no inventory tracking. Engraving text, gift notes, and finish selections live as modifiers instead of variants, so a BigCommerce catalog can model more selectable attributes than its variant cap suggests.
Shopify makes the opposite tradeoff. Its October 2025 variant increase raised the per-product allowance to 2,048 while keeping the three-option model. A catalog that needs a fourth selectable axis reaches that ceiling well before variant math becomes the limiting factor.
Copy link to headingWho operates checkout on each platform
BigCommerce publishes Open Checkout as an open-source, forkable application with no documented plan restriction. A team that forks it gets direct access to checkout code at the Core or Growth tier, and picks up maintenance of that fork in exchange. Its Checkout JS SDK sits underneath as the lower-level layer. BigCommerce released that SDK first and opened the full checkout frontend two years later, after developers found the SDK alone too involved to build a checkout against.
Shopify operates checkout and payments as a managed service, and that's a large part of why it's fast to launch on. Customizing that checkout runs through UI extensions, which cover the information, shipping, and payment steps and require the Plus plan. The requirement holds whether the storefront runs a theme or a headless framework.
Copy link to headingHow each platform meters API rate limits
BigCommerce meters API rate limits per store. Core and Growth share one 20,000-request-per-hour quota across every integration on that store. An enterprise resource planning (ERP) sync, a reviews app, and a search indexer all draw from the same pool. Adding the fourth integration shrinks the headroom available to the first three.
Shopify scopes its Admin API limits per app per store, so each integration gets its own bucket and a new app doesn't reduce what the others can spend. The GraphQL Admin API, which superseded REST as the supported surface in October 2024, meters that bucket as a points-per-second budget that rises with the plan. The gap between the two models stays invisible on day one and shows up once a stack carries three or four integrations, which makes integration count worth forecasting early.
Copy link to headingWhat BigCommerce is built for
BigCommerce is a multi-tenant software-as-a-service (SaaS) commerce platform built around revenue-tiered plans and an open API surface. It hosts the catalog, cart, and checkout as managed services, while leaving the storefront layer open enough to replace outright.
The developer surface is where BigCommerce separates itself. Its GraphQL Storefront API carries no documented plan gate, and Catalyst, its first-party Next.js storefront framework, is MIT-licensed and runs on any Node.js host rather than a proprietary runtime.
Copy link to headingWhat Shopify is built for
Shopify is a managed SaaS commerce platform organized around four merchant-facing tiers. Instead of auto-upgrading on revenue, those tiers differ on platform limits such as staff-account counts, checkout extensibility, and headless storefront allowances.
Its app catalog sits at the center of how merchants extend the platform, and that breadth is one of Shopify's clearest strengths. Custom apps on Plus can also call Shopify Functions APIs to run custom logic inside checkout.
Copy link to headingWhen BigCommerce is the stronger backend choice
For a distributor running formal quote-and-approve cycles, BigCommerce is the stronger call. B2B Edition ships quotes, net terms, purchase-order payments, and an open-source Buyer Portal that drops onto Catalyst or a custom storefront. Its REST API exposes quote creation and checkout directly, so a rep can negotiate a price and push it to a cart without a third-party app in the path. The catch is the tier, because B2B Edition only attaches to Performance.
The same logic applies to catalogs built on four or more selectable attributes. Apparel sold across size, color, fit, material, and finish is the usual case, and any axis that doesn't carry stock can move to a modifier instead of multiplying variants. BigCommerce is also the stronger pick for a team that wants into checkout code early, since Open Checkout is forkable at Core or Growth. You maintain that fork, and you share one API quota across every app on the store.
Copy link to headingWhen Shopify is the stronger backend choice
For a team that needs a storefront live this quarter, Shopify is the stronger call. Subscriptions, reviews, loyalty, site search, and ERP connectors are mostly installable apps rather than integration projects, which shortens the path to launch. The tradeoff is that an app-heavy stack follows someone else's release schedule, so decide early which apps sit on critical paths.
The same logic applies to DTC catalogs that fit the three-option model, and to teams selling into several regions before they reach Plus. Shopify Markets runs inside one store admin and gives a single catalog market-specific pricing, languages, and domains without an enterprise contract. Separate expansion stores with their own catalogs stay on Plus, so settle early whether your regions need different catalogs or only different prices.
Copy link to headingWhy most BigCommerce and Shopify teams should fix the frontend first
A replatform is a quarter of work, so check what's slow before committing to one. Slow product pages, failing Core Web Vitals, and A/B tests that wait on the next deploy all come from the rendering layer. Changing the commerce backend leaves that layer exactly where it was.
Copy link to headingA backend swap won't fix a slow product page
Moving backends means re-importing products, orders, customers, and price lists, then rewiring every integration and retesting checkout end to end. None of that work touches the code that renders your product pages, which is where the latency was coming from.
Replacing the frontend and keeping the backend is the cheaper path, and it holds up. A global sportswear retailer kept Salesforce Commerce Cloud as its commerce engine and put a Next.js storefront on Vercel in front of it. Holiday weekend revenue moved from $38 million to $48 million against the prior year, time to first byte dropped by 500 milliseconds, and peak conversion rose 5x.
Copy link to headingTraffic spikes hit the storefront before the backend
Every request reaches your storefront first, so the rendering layer decides whether Black Friday holds together. During BFCM 2025, Vercel served 115,836,126,847 requests and peaked at 518,027 requests per second.
That capacity doesn't change with the backend behind it, because a commerce API only sees the requests a storefront passes through. Caching product and category pages at the frontend keeps most spike traffic off the backend entirely.
Copy link to headingShip the storefront that fits either backend on Vercel
Neither migration fixes a conversion drop that lives in the rendering layer, and the two platforms solve different catalog and operating problems rather than a shared performance one. Once the backend decision is settled, the storefront in front of it determines whether product pages load fast and checkout holds up on the busiest day of the year.
Implementation depends on catalog shape and team size, though the storefront concerns stay the same on either backend:
Fluid compute: Concurrent request handling on Vercel Functions charges during active CPU usage rather than idle time, which suits catalog and cart calls to either platform's API.
Incremental static regeneration: ISR propagates price and inventory webhooks to cached pages through
revalidateTag()without a full redeploy.Vercel CDN: Product and category pages serve close to the shopper from Vercel's global network, independent of which backend generates the data.
Preview deployments: Every pull request gets a production-identical environment for reviewing storefront changes before they reach live traffic.
Maintained templates: Catalyst and Next.js Commerce give BigCommerce and Shopify teams a working starting point instead of a blank repository.
Start a new project and ship on your first git push, or browse commerce templates to begin from a Catalyst or Next.js Commerce storefront.
Copy link to headingFrequently asked questions about BigCommerce vs Shopify
Copy link to headingIs BigCommerce or Shopify better for headless commerce?
Both support headless builds, and the difference is tooling depth. BigCommerce ships Catalyst, an MIT-licensed Next.js framework that runs on any Node.js host. Shopify's rebuilt Hydrogen is runtime-agnostic and deploys to Vercel, and Next.js Commerce targets Shopify specifically.
Copy link to headingDoes BigCommerce charge transaction fees?
BigCommerce charges no per-transaction fee on orders through its embedded payment providers, which include Stripe, PayPal, Adyen, and Klarna. An order routed through a non-embedded gateway picks up an Open Payment Provider Fee of 2.0% on Core, 1.0% on Growth, and 0.6% on Scale. Performance negotiates that rate by contract.
Copy link to headingCan Shopify handle more than three product options?
Shopify's variant increase raised the per-product count, not the option count, so a product still carries three option types such as size, color, and material. A catalog needing a fourth axis is worth testing against BigCommerce modifiers, which add dimensions without generating variant SKUs.
Copy link to headingWhich platform is better for B2B commerce?
BigCommerce's B2B Edition provides quotes, an Invoice Portal, net terms, and an open-source Buyer Portal on the Performance tier. Shopify moved foundational business-to-business (B2B) features onto every paid plan in April 2026, while unlimited catalogs and direct company-level assignment stay on Plus.