B2B eCommerce setup: What to build, what to skip, and what breaks first (2026)

Setting up B2B eCommerce is messier than it looks. Approving wholesale signups one at a time. Building a "wholesale" page that's essentially just a standard product page. Hoping a retail customer doesn't see your wholesale prices by accident. Re-keying email orders into the store. Adding "Net 30" as a manual note rather than a valid payment term. Watching inventory drift out of sync between your DTC store and your wholesale spreadsheet.

And underneath all of it, the harder problem: finding a system that's simple enough to launch this month and replace your manual process, but smart enough to handle real wholesale operations as you grow, without forcing your buyers through a worse experience than email.

If any of that sounds familiar, this guide is for you. We'll walk through what real B2B setup actually requires, how platforms and portals and marketplaces differ (these get mixed up constantly), which platforms are worth considering in 2026 with their honest pros and cons, a step-by-step Shopify setup walkthrough, including the gotchas most guides skip, and the trends that we found worth knowing.

One note on platforms upfront: we go deep on Shopify in the setup section because that's what most of our readers run, and because Shopify shipped native B2B to every plan in April 2026, which changed what's possible for non-Plus merchants. If you're on a different platform or still deciding, the structural advice (store architecture, catalogs, payment terms, self-service portals) applies the same way. Tools change. The mechanics don't.

The category itself is huge.

The global B2B eCommerce market was valued at US$30.42 trillion in 2024 and is on track to more than double to US$66.89 trillion by 2029. US B2B eCommerce site sales alone reached $2.3 trillion in 2024 and are projected to surpass $3 trillion by 2028.

Gartner expects 80% of B2B buying to shift online by 2025, with 73% of B2B buyers preferring to research and purchase independently.

If you're reading this, you probably don't need convincing.

You need to know what setting up B2B eCommerce actually requires, beyond a definition. Here are the six things that separate a real B2B operation from a DTC store with "wholesale" duct-taped to the side.

#1. Company accounts, not just customer accounts. In B2B, your buyer is a company, not a person. That company has multiple users (the buyer, the AP person, the warehouse manager), multiple locations, its own tax ID, its own approved payment terms, and its own approval flow for big orders. Your platform needs to model that out of the box, not through customer tags and Liquid hacks.

#2. Gated catalogs and pricing. Two buyers logging into your store should be able to see different products at different prices, with different minimum order quantities. Retail visitors should never see wholesale rates. If your "wholesale pricing" is a discount code or a hidden Shopify collection, you're going to leak prices eventually.

#3. B2B-aware checkout. Net 30, Net 60, purchase orders, ACH, vaulted credit cards, tax exemptions, VAT validation. None of these are standard DTC features. And a few standard DTC features (Shop Pay, Apple Pay, Google Pay, Amazon Pay) don't work with B2B at all, which surprises a lot of merchants.

#4. A real self-service portal. Your buyers want to log in, see their catalog, reorder past purchases, download invoices, check order status, request quotes, and add team members without emailing you. If they can't, they'll keep emailing. The portal is the difference between digitizing your operation and just adding a slow form to it.

#5. Approval and registration workflows. You don't want anyone signing up as a wholesale buyer. You need a registration form that goes to a draft state, a review process, and a way to assign new buyers to the right pricing tier on approval. Same logic for big orders that need internal sign-off on the buyer's side.

#6. Integration with the back office. ERP, CRM, accounting, shipping, and inventory. The minute B2B orders flow through your store, they have to flow into your operational systems too. Manual sync at wholesale volume isn't viable.

If you have these six in place, you have a B2B operation. If you don't, you have a workaround.

Wholesale vs B2B eCommerce. Wholesale is one type of B2B eCommerce, where a manufacturer or distributor sells in bulk to another business that resells. B2B eCommerce is the broader umbrella that also covers SaaS, services, raw materials, and procurement. For a primer on the definition itself, see our what is B2B guide. For the buyer-side differences between B2B and B2C, see our B2B vs B2C guide.

Learn more: Shopify wholesale: A practical guide to B2B setup and management

These three terms get used interchangeably, and they shouldn't be. They describe different things.

A B2B platform is the underlying software that powers your B2B eCommerce operation. Shopify Plus, BigCommerce, Adobe Commerce, OroCommerce, and Salesforce Commerce Cloud are platforms. They give you the tools to build storefronts, manage catalogs, run pricing rules, and integrate with your back-office systems.

Think of the platform as the foundation. You build everything else on top of it. A B2B platform offers the tools necessary for creating customer portals, vendor dashboards, and dedicated websites, serving as the backbone of an e-commerce ecosystem.

A B2B portal is the actual buyer-facing experience built on top of the platform. It's where your wholesale customers log in, see their custom catalog, place orders, check invoices, and manage their accounts. Some teams call this a B2B website, a wholesale portal, or a customer portal. Same thing.

A portal usually has:

• Login-gated access. Buyers register, you approve them, then they get in.
• Customer-specific catalogs and pricing. What Buyer A sees doesn't match what Buyer B sees.
• Self-service ordering. Add to cart, set quantities, and place the order.
• Account management. Order history, reorder, invoice download, and multiple users per company.
• Quote and approval flows. Some buyers need a quote first or internal approval before checkout.

The portal is what your buyers actually touch. The platform is what makes the portal possible.

A B2B marketplace is a multi-vendor platform where buyers discover and order from multiple sellers in one place. Alibaba, Amazon Business, Faire, and Joor are well-known examples. They sit between buyers and sellers, take a cut of each transaction, and handle parts of the experience like discovery, payment, or fulfillment.

Marketplaces are split into two categories:

• Vertical marketplaces specialize in one industry. Joor for fashion. Faire for independent retail goods. Knowde for chemicals.
• Horizontal marketplaces carry products across many categories. Amazon Business is the obvious example. Alibaba is the largest global B2B marketplace.

A marketplace is a sales channel, not a system you own. You're a vendor on someone else's platform. Your portal is a system you own and run yourself.

Quick gut-check:

• You own the platform → it's your tech stack.
• You run the portal → it's your wholesale storefront.
• You list on a marketplace → you're one seller among many.

The "B2B eCommerce" label covers very different operations. Knowing which model fits is the first step in choosing tools.

A manufacturer sells directly to wholesale buyers, retailers, or other manufacturers through their own online portal. Buyers log in, browse a catalog, and reorder without phone calls. Common in apparel, food, electronics, and packaging. The manufacturer controls the buyer relationship and the data.

A distributor buys from manufacturers and resells to retailers, often across a region. They run a portal where their retail customers can place orders, check stock, and manage accounts. A B2B portal lets retail customers place orders, check inventory availability, and manage their accounts without tying up the sales team's time.

These connect many sellers with many buyers in a single venue. Faire, Alibaba, and Joor fall here. Sellers gain reach. Buyers get a one-stop catalog. The marketplace owns the discovery layer and earns a transaction fee. 59% of B2B buyers conduct more than 25% of their purchases through marketplaces, which is why most growing brands eventually list on at least one.

Learn more: What is wholesale price and how to set it

B2B SaaS is software sold to other businesses on a subscription, delivered through the cloud. Salesforce, Shopify, HubSpot, Slack, and Klaviyo are all B2B SaaS companies. The B2B SaaS meaning is straightforward once you separate the two halves: B2B describes who the customer is (another business), and SaaS describes how the software is delivered. Cloud-hosted, subscription-billed, accessed through a browser, with the vendor handling hosting and updates. Any B2B SaaS company you work with operates this way.

Every B2B SaaS purchase is a B2B eCommerce transaction. That's the link that matters here. If you're a Shopify merchant reading this, you're a customer of B2B eCommerce every time you pay your monthly Shopify bill, your Klaviyo bill, or your Qikify subscription.

Plenty of brands sell to shoppers and to other businesses from the same store. A coffee roaster sells single bags to consumers and 50-pound bulk orders to cafés. A skincare brand sells direct to customers and to spas at wholesale prices. The hybrid model is increasingly common because Shopify and other modern platforms now support both flows from a single backend without forcing you to maintain two stores.

It's probably the model most merchants reading this will end up in.

The "best" platform depends on your size, catalog, integration needs, and how much engineering you can throw at it. Before listing the options, here are the criteria that separate strong platforms from weak ones for B2B work:

• Customer-specific catalogs and pricing as a native feature, not a plugin.
• Company accounts with multiple users, roles, and permissions.
• Native payment terms (Net 30, POs, ACH, invoicing) at checkout.
• ERP and CRM integration paths that don't require six months of custom dev.
• Quote and approval workflows for buyers who can't just check out.
• Headless or composable architecture if you want to scale into multi-storefront, multi-region operations.
• B2B and B2C from one backend, if you run hybrid.

Score the platforms below against the list above based on your specific needs. Here's how the main options break down for merchants comparing in 2026.

Shopify is the strongest mid-market option for brands that want B2B and B2C on one stack without a six-month rebuild. As of April 2026, native B2B features are available on every plan, including Basic, Grow, Advanced, and Shopify Plus. Now you no longer need Plus just to get started with wholesale. Company profiles, custom catalogs, custom pricing, net payment terms, vaulted credit cards, VAT validation, and tax exemptions all ship natively. Shopify ships over 100 platform improvements every six months and is named a Leader in the 2024 Forrester Wave™ for B2B Commerce Solutions.

That said, "available on every plan" doesn't mean "identical on every plan." Lower plans give you the essentials to launch and run a basic wholesale operation, but the full B2B feature set — unlimited catalogs, direct per-company catalog and pricing assignment, partial payments and deposits, dedicated B2B storefronts with their own URL, and full B2B API access — is still Plus-only. If your wholesale operation involves dozens of accounts with negotiated pricing, multi-storefront setups, or deep custom workflows, Plus is where the ceiling lifts.

• Pros: Fast to launch, B2B and DTC on one backend, low engineering overhead, native B2B on every plan, huge app ecosystem.
• Cons: Lower plans cap catalogs at 3 active across all B2B markets and lack direct per-company catalog assignment. Accelerated checkouts (Shop Pay, Apple Pay, Google Pay, Amazon Pay) don't work with B2B. Highly bespoke workflows still need Plus or apps.
• Best for: DTC brands expanding into wholesale, mid-market merchants, and teams without a dedicated platform engineering function — on any plan to start, scaling to Plus as the wholesale side grows. We go deep on Shopify B2B setup in Section 6 below.

Learn more: Shopify vs Shopify Plus: which plan fits your B2B operation

BigCommerce ships strong out-of-the-box B2B features and is known for an open architecture that makes integrations less painful. It supports hybrid B2B and DTC businesses well and offers built-in features like company hierarchies, quote management, and shared shopping lists in its B2B Edition.

• Pros: Open architecture, strong API access, native B2B features in B2B Edition, hybrid B2B/DTC friendly, no transaction fees on its own gateway.
• Cons: Smaller app ecosystem than Shopify. Some advanced B2B features sit behind B2B Edition (enterprise pricing). Theme ecosystem less mature.
• Best for: Catalog-heavy brands that want flexibility without going fully headless. If you're weighing it head-to-head against Shopify, our BigCommerce vs Shopify comparison breaks it down.

Adobe Commerce is the heavyweight for brands with deep customization needs and an in-house dev team. It gives you complete control over every layer of the stack, which is both its biggest strength and its biggest cost.

• Pros: Total customization, mature B2B feature set, strong for large catalogs and approval flows, headless-friendly.
• Cons: Expensive to run and maintain. Implementation typically runs 6–9 months. Requires in-house engineering or an agency on retainer. Total cost of ownership well into six figures.
• Best for: Enterprise brands with engineering resources and unusual workflow needs. For most growing B2B businesses, the cost outweighs the flexibility. See our Magento vs Shopify breakdown for a side-by-side.

Built B2B-first from day one. Oro doesn't try to serve DTC merchants; everything in the product is designed for manufacturer, distributor, and wholesale workflows.

• Pros: Deepest native B2B feature set (multi-tier pricing, RFQ, sophisticated approval workflows, ERP integration patterns). Strong for enterprise B2B manufacturer and distributor focus. Open-source option available.
• Cons: Smaller ecosystem than Shopify or Adobe. Steeper learning curve. Less of a fit if you also need to run a DTC channel from the same platform.
• Best for: Manufacturers, distributors, and B2B-only brands with multi-tier pricing and ERP-heavy operations.

The enterprise tier. For enterprises managing large-scale B2B operations across multiple markets, these platforms handle sophisticated business logic and global deployment requirements.

• Pros: Built for scale. Handles millions of SKUs, multi-region, multi-currency, multi-brand. Strong integration with CRM (Salesforce) and ERP (SAP) ecosystems. Composable architecture (commercetools).
• Cons: License costs typically run high six to seven figures annually. Implementation cycles of 12+ months are normal. Requires a system integrator on retainer. Overkill for most.
• Best for: Global enterprises with existing investment in SAP or Salesforce, or brands that have outgrown mid-market platforms.

Learn more: Best Shopify wholesale apps: Top picks, comparison and reviews

If you want reach without building your own portal first, an online B2B marketplace is the fastest way in. Here are the ones worth knowing.

• Alibaba. The largest global B2B marketplace, dominant in manufacturing and wholesale across Asia. Strong for sourcing and bulk supplier discovery.
• Amazon Business. The horizontal heavyweight in the US. Fortune 100 companies and major hospital systems buy through it. Office supplies, industrial gear, MRO, more.
• Faire. The leading wholesale marketplace for independent retailers. Strong in apparel, home goods, and lifestyle.
• Joor. Vertical marketplace for fashion brands and retailers, with strong adoption among premium and contemporary labels.
• TradeIndia and IndiaMART. Two of the best B2B portals in India for sourcing across categories. If you're researching "best B2B portal in India," these are the dominant names.
• Global Sources. Long-running global B2B marketplace focused on Asian manufacturers serving Western buyers.
• EC21 and ECPlaza. Korean-rooted global B2B marketplaces serving cross-border trade.

A marketplace is a channel, not a strategy. Use them for reach, but don't depend on them as your only sales path. The marketplace owns the buyer relationship as long as the order flows through their system.

This is the practical part. If you're a Shopify merchant looking to launch B2B alongside (or instead of) your retail store, here's the path most teams take.

The big context shift: in April 2026, Shopify extended native B2B features to every plan, not just Plus. Company profiles, custom catalogs (up to three on non-Plus plans), volume pricing, quantity rules, net payment terms, and vaulted credit cards are now part of the core platform — no plugins or workarounds required. The third-party wholesale apps that used to fill this gap on lower plans are now competing with a Shopify-native feature set. Apps still add real value on top (more on that below), but the baseline is much stronger than it was a year ago.

Shopify reports merchants using B2B see up to a 33% increase in self-serve orders within 6 months, up to a 20% increase in reorder frequency, and a 4.1x reorder frequency uplift on B2B orders compared to DTC.

Learn more: Shopify B2B for all plans + Duos full access

Most B2B features are now available on all four B2B-capable plans. The differences sit at the edges:

Translation: if you have a handful of wholesale customer segments and need percentage-off pricing per tier, the lower plans handle it. If you negotiate per-customer pricing across dozens of accounts, or you need separate B2B and DTC storefronts, you're heading to Plus.

Before touching settings, decide which store type fits your business. This is a "choose carefully" decision because switching later means redoing most of your setup.

Blended store runs B2B and DTC from the same Shopify store. One admin, shared inventory, customers see different products and prices based on whether they're logged in as a company. Good fit if you sell similar products to both audiences, share inventory, and have the same team managing both.

A dedicated B2B store is a separate Shopify store used only for wholesale. Available on all plans, but only Plus lets you run it as a true separate storefront with its own URL. Good fit if you need distinct inventory for B2B and DTC, want to gate the entire online store behind a B2B login, or have different teams running each side.

Most Shopify merchants reading this will pick blended. The exception: brands with enterprise wholesale operations that need a completely separate experience for buyers, often Plus customers.

In Shopify B2B, every wholesale buyer is a "company," not a customer. A company can have multiple locations and multiple users at each location (the buyer, the AP person, the warehouse manager, etc.). One company can hold up to 10,000 locations and 10,000 customers, with up to 50 customers per location, which is enough for almost anyone.

Set up your top wholesale accounts as companies first. Add their locations, tax IDs, billing details, and approved users.

Important catch: Shopify B2B requires the new customer accounts system, not the legacy accounts. If you're on legacy accounts for DTC, you can keep them for retail and activate new customer accounts just for B2B logins.

Catalogs control what each company sees and what they pay. Common patterns:

• One global wholesale catalog with a flat percentage discount off retail
• Tiered catalogs (Tier 1, Tier 2, Tier 3) based on annual volume
• Per-company catalogs for negotiated deals (Plus only)

Inside each catalog, you control the product list, pricing (overall percentage adjustment plus fixed prices for specific SKUs), quantity rules (minimums, maximums, case packs, increments), and volume price breaks.

If you're on Basic, Grow, or Advanced, you assign catalogs to B2B markets (regions or segments). On Plus, you can assign catalogs directly to a specific company or location, which is what most enterprise wholesale operations actually need. For the pricing strategy side of this, our guides on tiered pricing and bulk pricing for B2B Shopify stores go deeper.

B2B checkout doesn't look like B2C checkout. You'll typically need:

• Net payment terms (Net 15, Net 30, Net 60, Net 90) assigned per company
• Purchase order numbers as a checkout field
• Vaulted credit cards for saved payment
• ACH bank transfers for US merchants
• Tax exemption handling for resellers
• VAT validation and compliant invoices for EU and UK buyers
• Order submission settings (auto-approve or submit as draft for review)

Compatibility gotchas to know: Shopify B2B is not compatible with accelerated checkouts like Shop Pay, Apple Pay, Google Pay, or Amazon Pay. Buyers also can't checkout as guests; they need to log in first. Orders are capped at 500 line items, draft orders at 200. If any of these clash with how your wholesale buyers actually order, plan around them early.

Learn more: B2B payments: a merchant's guide to net terms, POs, and ACH

Shopify's Trade theme (and the newer Horizon theme family) is built specifically for B2B and includes the layouts you'd want for a wholesale storefront. Both are free in the Theme Store. If you already have a DTC theme you love, most modern Shopify themes now support B2B features natively.

The theme handles the look. The B2B self-service portal handles the buyer experience after login, and that's where most Shopify merchants hit the wall. Shopify's native B2B covers the basics, but it doesn't yet cover everything buyers expect from a modern portal: quote requests, credit limit management, bulk reordering via SKU list or CSV upload, shopping lists, multi-user approval flows, or detailed order history views.

Tips: That's the gap Duos B2B Self-Service is built to fill. It's built directly on Shopify's native B2B system, not around it, so it works with company accounts, catalogs, and payment terms with no conflicts.

Before opening the gates, test the full flow with a real account: register a company, log in, see the right catalog, add to cart with quantity rules, place a PO order, receive an invoice, and reorder. Fix the rough edges before any buyer touches it.

Most teams launch with a pilot group of 5 to 20 known accounts. Once that's stable, open registration to the rest of your customer base, usually with a Shopify Forms account-request form on your site so prospective buyers can apply.

A few problems show up repeatedly when merchants move B2B sales online. Worth knowing before they bite.

Catalog size. Big B2B catalogs run into tens of thousands of SKUs with attributes that matter (case pack, lead time, country availability). Without good search and faceted navigation, buyers can't find anything. Invest in product information management early.

Sales rep resistance. Reps see self-service as a threat to their commissions. The fix isn't replacing them. It's giving them a tool that handles routine reorders so they can focus on growing accounts. Modern B2B platforms give sales teams shared carts, guided selling, co-browsing, and customer-specific notes, so they can work alongside buyers digitally instead of being cut out of the relationship.

Integration with ERP and CRM. B2B operations live and die by the back office. If your portal can't pull real-time inventory from NetSuite or push orders into your ERP, the whole thing falls apart. Confirm B2B integration paths (ERP, CRM, PIM, accounting, shipping) before you commit to a platform. Wholesale suppliers and distributors with thousands of SKUs feel this pain hardest because manual data sync at scale just isn't viable.

Approval and procurement workflows. Big buyers have multi-step approvals. Your portal needs to support guest carts, PO upload, and "submit for approval" flows, or those buyers won't transact through it.

Mobile experience. B2B buyers research and reorder from phones now, especially in field-heavy industries. A portal that only works on desktop is a portal that's losing orders.

Maintaining personal relationships. The fear that going digital kills the human relationship is real but overstated. The good news: self-service handles the routine, and reps get more time for the conversations that matter. The accounts that need a relationship still get one.

If you're investing in B2B setup now, here's what the next 12–24 months look like. These shape what to build and what to skip.

#1. B2B self-service is getting more demand. 73% of B2B buyers now prefer to research and purchase independently online. Sales rep involvement is shifting from order-taking to advising on high-stakes deals. If your setup still assumes reps handle most orders, you're building backwards.

#2. AI agents are entering the B2B buying journey, but mainly in the research and cold-reach-out process. Buyers are starting their research in ChatGPT and other AI assistants before they ever land on your site. Shopify has rolled out the ability to make your catalog searchable in ChatGPT, and "agentic commerce" (where an AI agent places orders on the buyer's behalf) is no longer hypothetical. Structured product data, clean SKUs, and machine-readable pricing rules matter more than they used to.

#3. Headless and composable architectures keep gaining ground. Mid-market and enterprise brands increasingly split their storefront (the buyer experience) from their commerce engine (catalogs, pricing, orders). Shopify, BigCommerce, and commercetools all support headless setups now. It's not the right choice for everyone, but the option matters for brands planning multi-region, multi-brand, or app-first rollouts.

#4. Marketplace presence is expected, not optional. 59% of B2B buyers conduct more than 25% of their purchases through marketplaces. Brands that ignore Amazon Business, Alibaba, Faire, or their vertical equivalents are leaving discovery on the table. The good news: most modern platforms now have native marketplace integrations or sync apps.

#5. ERP and back-office integration becomes the bottleneck. As more orders flow through your portal, the cost of manual sync to ERP, CRM, and accounting compounds. Brands that picked a platform without considering integration paths usually feel the pain in year two. Build the integration story into your platform decision, not after.

#6. B2B and DTC merging on one platform. Five years ago, running both meant two separate stacks. Now Shopify, BigCommerce, and Adobe Commerce all support running B2B and DTC on a single platform with a single admin. The "blended store" approach is becoming standard, and most growing brands end up in this hybrid model whether they planned to or not.

If you've read this far, you have the full picture: what a real B2B operation requires, how platforms and portals and marketplaces fit together, which platforms are worth considering, and how to set up wholesale on Shopify step by step.

The pattern we see most often is straightforward. Start with your own portal on a platform you already run. Get a handful of wholesale accounts ordering through it. Fix the rough edges. Then expand — more accounts, more catalogs, maybe a marketplace listing or two for additional reach.

The tools are better than they've ever been. Shopify's native B2B on every plan removed the biggest barrier for most mid-market merchants. The remaining gaps — self-service portals, quote workflows, bulk ordering, multi-user approvals — are well covered by the app ecosystem. And if you outgrow your current setup, the upgrade path to Plus or to a heavier platform is clear and well-documented.

The harder part was never the technology. It was decided to stop managing wholesale over email and spreadsheets. If you're past that decision, everything else is execution.