A B2B ordering portal is an online self-service system for business buyers. Customers place orders themselves—anytime, by SKU, at their contract prices, with all documents in one place. Wholesalers, distributors, and manufacturers build a self-service portal for distributors and trade accounts to serve more buyers without adding phone staff or retyping emailed orders.

Below, we explain what a B2B portal needs beyond a standard online store, how to connect it to your ERP and warehouse, how Czech and EU VAT rules apply, how it changes your sales team's work, and how to roll it out in phases.

Why business buyers want to order online

Business buyers prefer ordering online because it saves time and cuts errors. Purchasing managers and site foremen are used to seeing live prices and stock in consumer stores, ordering in the evening, and tracking parcels. With suppliers, they often hit a busy phone line or wait until the next day for a reply.

Online ordering gives buyers clear benefits:

• Order anytime at contract prices based on live stock.
• Buy using familiar SKUs, avoiding variant mix-ups.
• Find invoices, delivery notes, and order history in one place, even when a colleague is on leave.

For wholesalers, manual retyping, errors, and calls about stock or shipments disappear. Sales reps gain time to grow accounts.

Picture a fictional fastener wholesaler serving hundreds of tradespeople. Most orders contain dozens of SKUs and arrive by email or phone. Assistants retype them and check contract prices manually, causing mistakes. Here, a B2B portal pays off fastest. Personal contact stays: reps still handle large deals and negotiations, while the portal takes over routine orders.

A B2B ordering portal is not a B2C store

Unlike a retail store, a B2B portal handles unique terms for every buyer. A consumer shop shows one price to everyone and takes upfront payment; a B2B portal must know each company's contract, discounts, payment terms, and limits. Here is how they compare:

In practice, the portal must pull price lists, unpaid invoices, and credit limits straight from your ERP. Multi-user accounts let a warehouse clerk draft an order and a manager approve it.

The catalog differs too. Buyers search by SKU, technical specs, or manufacturer part number. Goods sell in packs, cartons, or pallets, with minimum order quantities and volume tiers. The portal must convert units and match what the warehouse actually ships.

Hiding prices behind a login on a retail store is not enough; a B2B portal is a client zone built over your ERP. Many platforms do offer B2B modules—we cover how to choose in E-commerce platforms.

B2B portal features: must-haves vs. phase two

Your portal does not need every feature on day one. Split features into essentials, useful additions, and phase-two upgrades:

Your buyers know best what is essential: ask five of them what slows them down most.

Quick ordering by SKU (such as pasting rows copied from a spreadsheet) and one-click reordering save the most work. Along with parcel tracking, both must work smoothly on mobile for site foremen and field technicians.

Do not overlook documents. When a buyer's accountant finds invoices, delivery notes, and open balances in the portal, you field fewer calls and send fewer payment reminders.

Connecting your ERP and warehouse

Your ERP (business or accounting system with inventory) remains the single source of truth for prices, limits, stock, and documents. The B2B portal reads this data and writes orders back. Separate price lists or stock records in the portal would soon drift out of sync, showing buyers one price online and another on the invoice.

Sync frequency depends on how fast each data type changes:

• Orders go to the ERP immediately so the warehouse can pick them.
• Stock levels update within minutes for fast-moving goods, less often for slower lines.
• Price lists and discounts transfer when changed in the ERP, or at least once a day.
• Credit limits and unpaid invoices are checked at submission to block orders over the limit.
• Invoices and delivery notes move to the portal right after the ERP issues them.
• Shipment status updates automatically from the carrier.

Czech systems like Pohoda, Money, and ABRA include data exchange interfaces. Pohoda, for instance, exchanges orders, invoices, and stock in XML via files or its mServer HTTP interface (Stormware XML documentation). Verify interface capabilities and speed early in the project, as they affect design and cost. Read more in Connecting your online store to accounting.

If your ERP lacks an interface, you have three options (choose during initial discovery, as costs and risks vary):

• scheduled file exports and imports,
• middleware translating data for the portal,
• replacing an outdated ERP.

Connections occasionally fail due to an ERP update, server downtime, or an unknown SKU in an order. A solid portal holds the order, alerts staff, and retries the transfer. Ask vendors about this just as closely as visual design.

Czech and EU specifics for a B2B portal

A B2B portal in Czechia must handle buyer verification and VAT rules. This text does not replace tax advice; review your setup with a tax advisor.

ARES. In Czechia, the ARES API is free and requires no registration. It loads a company's name and address by ID (IČO) and monitors later changes.

VIES. For EU cross-border B2B supplies (in Czechia under Section 64 of Act No. 235/2004 Coll., as of January 1, 2026), shipping goods to a VAT-registered buyer in another EU state is VAT-exempt when the buyer provides a VAT ID, the goods are transported there, and you report the sale in your EC Sales List. The portal verifies the VAT ID via the European Commission's VIES API at registration and sets the VAT regime automatically. VIES checks only the validity of the VAT ID, never the VAT rate.

Domestic reverse charge. Under the EU reverse-charge mechanism (implemented locally in Section 92a et seq.), a VAT-registered buyer acting as a taxable person accounts for the VAT. In Czechia, this applies to gold, waste and scrap (Annex 5), construction and assembly work, or goods in Annex 6 per government decree. Both the portal and your ERP must issue compliant documents.

Cross-border sales. Plan for multiple languages from day one, and pull EUR price lists from your ERP just like CZK ones.

Pricing and documents. Show ex-VAT prices primarily and calculate tax based on the buyer. Issue statutory invoices directly in your ERP to keep one numbering sequence.

Shipping. Offer your own fleet, local pickup, or carriers, and pull shipment status automatically.

How your sales team's role changes

Sales reps spend less time retyping orders and more time caring for accounts—such as calling a buyer whose purchases dipped or pitching a new product.

Still, reps may fear losing jobs or commissions when buyers self-serve. Resolve this before launch, because your reps decide whether customers adopt the portal:

1. Involve them in design: They know what customers ask and what slows them down.
2. Settle commissions: Count portal orders toward their commissions too, or they will not recommend it.
3. Give them visibility: Let them see client orders, history, and alerts when buying drops.
4. Have them train buyers: Placing a first order with a rep on the phone works better than a manual.

After a few months, compare time spent retyping versus serving clients and discuss the results with your reps. The portal takes over routine admin, not their jobs.

Off-the-shelf or custom? Phased rollout

An off-the-shelf platform is enough for simple price lists, fewer buyers, and standard ERPs. A custom B2B portal pays off with complex pricing, large catalogs, approval workflows, or custom ERP integration. Read more in Custom software vs. off-the-shelf systems.

Roll the portal out in phases:

1. Brief. Define version-one features, ERP integration, and a project owner.
2. Pilot. Pick 5 to 10 frequent buyers. They will spot data errors before others do.
3. Metrics. Track portal order share, error rates, and team hours saved. Measure your baseline a month before launch to see the savings.
4. Expansion. Add more buyers and features step by step.

Invite buyers personally via sales reps and by email. Include a guide and offer to walk through their first order together. Keep old channels open at first, while highlighting the portal's benefits: document access, live stock, history, and faster fulfillment.

In distribution, we created GPD B2B (a tire supplier website) and Tyreto (an online tire store). Find more examples in our projects.

We build B2B portals as a custom web application from CZK 230,000. If extending an online shop is enough, an online store starts from CZK 140,000.

Try our project configurator—it turns your answers into a project brief and three solution options.

Frequently asked questions