B2B marketplaces are digital platforms where businesses buy from and sell to other businesses. Interactions take place through shared infrastructure that handles listings, payments, and compliance. The UK’s B2B ecommerce market overall is projected to grow 22.9% annually through 2033, and B2B marketplaces are reshaping procurement across manufacturing, wholesale, construction, hospitality, and professional services. They’re pulling transactions that used to run through phone calls and paper catalogs onto platforms that give customers price transparency and sellers access to demand they couldn’t reach alone.

Below, we’ll discuss what B2B marketplaces are, the payment models they run on, and what the payments layer must handle to keep a multivendor platform compliant and functional.

Highlights

• B2B marketplaces host multiple sellers in one place and give customers a single interface to search, compare, and purchase while the platform manages payments.

• Construction, wholesale, and hospitality procurement in the UK are seeing measurable shifts as digital platforms replace legacy purchasing relationships and manual processes.

• The payment layer in a B2B marketplace involves multiparty money movement, seller verification, and tax logic that requires purpose-built infrastructure.

What is a B2B marketplace?

A B2B marketplace is a digital platform where businesses buy from and sell to other businesses through one point of access. The shared infrastructure hosts many sellers while giving customers a consistent experience across all of them.

How do B2B marketplaces work?

B2B marketplaces connect customers and sellers by handling infrastructure that neither party needs to build themselves.

Here are the components:

• Product listings and discovery: Sellers register, upload listings, and become searchable to a pool of active customers without building their own acquisition channel.

• Order management: The platform handles the transactional layer between customer and seller. It tracks orders, confirmations, and fulfilment status in one place.

• Payments: Customers typically pay through the platform rather than directly to each seller. The platform is managing multiparty money movement on each transaction.

• Seller verification: Before a seller can transact, the platform must confirm they are who they say they are. In the UK, that means compliance with the Money Laundering Regulations 2017, where applicable.

• Value-added tax (VAT) handling: VAT rules apply to each taxable transaction, including the domestic reverse charge in sectors such as construction, where VAT accounting responsibility shifts to the recipient of the service.

• Fulfilment logistics: Some platforms extend into physical fulfilment, though many leave this to the seller and focus on the transactional layer.

How are B2B marketplaces shaping UK commerce?

The UK has a large digital procurement environment, and B2B marketplaces are accelerating a shift that was underway.

Here are the major industries being affected:

• Manufacturing and wholesale: Platforms serving manufacturers and distributors are compressing the distance between factory-level pricing and end customers. A midsize manufacturer in the Midlands can now reach customers across the UK without a dedicated sales force.

• Construction: The Construction Industry Scheme (CIS) adds a compliance layer that B2B platforms in this sector must account for. The domestic reverse charge for construction services, which shifts VAT accounting responsibility to the recipient, means platforms can’t treat all transactions identically.

• Hospitality procurement: Hotels, restaurant groups, and catering businesses have historically bought through direct relationships with distributors. Digital procurement platforms are pulling that spend online, with consolidated ordering, price transparency, and faster reordering cycles.

• Professional services: Platforms for business services such as legal, accountancy, and facilities management are earlier in development but growing. This transaction model is usually service-based rather than product-based, which creates different requirements regarding contracts, milestone payments, and escrow.

What types of B2B marketplaces operate in the UK?

The types of B2B marketplaces break down along two axes: breadth of offering and the structure of who’s buying and selling. Each has a different set of advantages for customers and sellers.

• Vertical marketplaces: These focus on one industry (e.g., builders’ merchants, food service wholesale, pharmaceutical distribution). They go deep rather than wide, incorporating industry-specific compliance, terminology, and pricing logic such as tiered discounts, bulk pricing, and credit accounts in a way a general platform can’t.

• Horizontal marketplaces: These cut across industries. A facilities manager might use one platform to source cleaning supplies, IT equipment, and office furniture from different suppliers. Breadth is the value proposition, not sector depth.

• Local marketplaces: UK-focused platforms concentrate on domestic supply chains, which simplifies VAT treatment and logistics. That’s an advantage for customers and sellers who don’t need cross-border reach.

• Global marketplaces: Cross-border platforms introduce import duties, different VAT regimes, currency conversion, and post-Brexit compliance requirements for selling into the EU. That’s not a reason to avoid international reach, but it requires payment and compliance infrastructure built for it from the start.

• Many-to-many marketplaces: Multiple sellers and customers transact through a shared platform. This is the model people typically picture, and it’s a common structure in UK B2B platforms.

• One-to-many marketplaces: A single large supplier uses a marketplace-style platform to manage a structured network of customers, with consistent pricing, credit terms, and ordering workflows. Manufacturing businesses with dealer networks often operate this way.

What revenue models do B2B marketplaces use?

How a marketplace makes money affects how it’s structured, whom it attracts, and how sustainable it is. Many UK B2B platforms settle on one of three models:

• Subscription-based: Sellers pay a recurring fee for access to the platform. This gives the marketplace predictable revenue and sellers predictable costs. It works well when the value of access is clear: a wholesale platform with a large, active customer base can justify a subscription because sellers know the demand is there. The risk is that lower-volume sellers churn if they don’t see enough transactions to offset the fee.

• Commission-based: The platform takes a percentage of each transaction. This ties its revenue with seller success and creates an incentive to drive volume. It’s lower friction for sellers getting started because there’s no up-front cost and you pay only when you earn. The complexity is in the payment infrastructure. Each transaction must be split between the seller and the platform cleanly and automatically.

• Listing fee: Sellers pay to list products or services regardless of whether those listings convert. This model appears more in procurement directories and tender platforms than in transactional marketplaces. It provides baseline revenue but doesn’t tie income to outcomes, which can create misaligned incentives.

What are the benefits of B2B marketplaces for UK businesses?

The value of B2B marketplaces differs depending on whether you’re a customer or a seller, but both sides gain something.

These are some of the benefits of working in these marketplaces:

• Fast payment cycles: Many B2B platforms offer payment on delivery or within short windows.

• Access to more data: Transacting through a platform generates data on what’s selling, to whom, and at what volume. That’s useful for inventory planning, pricing decisions, and identifying which customers are worth investing in.

• Consolidated procurement: Customers sourcing from multiple suppliers through one platform reduce administrative overhead. There are fewer invoices, fewer supplier relationships to manage, and one place to track spend.

• Price transparency and comparison: Customers can see competing offers without running a full tender process for every purchase.

• Credit and payment flexibility: Some platforms offer trade credit, deferred payment, or buy now, pay later (BNPL) for businesses. That gives procurement teams tools that direct supplier relationships don’t always provide.

How do payments work in a B2B marketplace?

Payments in a B2B marketplace are structurally different from those in a single-vendor store. When a customer places an order fulfilled by multiple sellers, the platform receives a single payment and routes the right amounts to the right sellers, minus its fees. This has compliance and technical requirements that a standard payment integration won’t cover.

In the UK, platforms facilitating payments between third parties need to think carefully about their regulatory position. Depending on the model, a marketplace might be acting as a payment intermediary, which can bring obligations under the UK’s Payment Services Regulations 2017. Many platforms avoid taking on those obligations by routing through regulated payments infrastructure rather than holding funds themselves.

Stripe Connect is built for this. It’s designed for platforms and marketplaces that need to onboard third-party sellers, verify their identities, and route payments to them. It handles a lot of the compliance work that would otherwise fall on the platform.

How Stripe Connect can help

Stripe Connect orchestrates money movement across multiple parties for software platforms and marketplaces. It offers quick onboarding, embedded components, global payouts, and more.

Connect can help you:

• Launch in weeks: Use Stripe-hosted or embedded functionality to go live faster, and avoid the up-front costs and development time usually required for payment facilitation.

• Manage payments at scale: Use tooling and services from Stripe so you don’t have to dedicate extra resources to margin reporting, tax forms, risk, global payment methods, or onboarding compliance.

• Grow globally: Help your users reach more customers worldwide with local payment methods and the ability to easily calculate sales tax, VAT, and goods and services tax (GST).

• Build new lines of revenue: Optimize payment revenue by collecting fees on each transaction. Monetize Stripe’s capabilities by enabling in-person payments, instant payouts, sales tax collection, financing, expense cards, and more on your platform.

Learn more about Stripe Connect, or get started today.