Kaufland.de Marketplace Integration: Sellerportal API & Multi-Country Distribution

About Kaufland.de: founding, ownership and market position

Founding and history (1984 – today)

Kaufland was founded in 1984 in Neckarsulm (Baden-Württemberg) by Dieter Schwarz as a hypermarket chain within the Schwarz Group — the same corporate group that operates Lidl. Over four decades, Kaufland grew into Germany's largest hypermarket chain with stores across 8 European countries. The digital leap came in 2018, when the Schwarz Group acquired the German online marketplace platform real.de from Metro AG. The acquisition closed in 2020, and in 2021 real.de was rebranded to Kaufland.de — with all sellers migrated automatically.

With this move, Kaufland.de instantly inherited Germany's largest independent seller base outside of Amazon and eBay. Since then, the marketplace has been growing at double-digit rates: from roughly 6,000 merchants at launch (2021) to more than 18,000 active sellers in early 2026. Today, Kaufland.de is part of an ecosystem spanning the marketplace (3P), its own assortment (1P), OnSiteAds (ad network), Lidl Plus integration and a multi-country program for the DACH and CEE regions.

Ownership structure (2026)

• Schwarz Group / Schwarz Stiftung — 100% owner of Kaufland Stiftung & Co. KG
• Dieter-Schwarz-Stiftung — foundation trustee, Schwarz family
• Lidl Stiftung & Co. KG — sister company (discount grocery)
• Schwarz Produktion — private-label manufacturing (mineral water, chocolate, etc.)
• Schwarz Digits — IT and cloud division (STACKIT, XM Cyber)

With group revenue exceeding €175 billion (2024), the Schwarz Group is the world's largest retail group, ahead of Walmart and Amazon (retail segment). This financial strength gives Kaufland.de staying power in the platform competition against Amazon, OTTO and eBay.

Position in German e-commerce

In 2026, Kaufland.de ranks among the top 5 German marketplaces by visitor count, just behind Amazon.de, eBay.de and OTTO.de. In categories such as household, drugstore, groceries and garden, Kaufland.de has already overtaken OTTO. The tight integration with the 1,500+ Kaufland brick-and-mortar stores and the Lidl Plus app (more than 20 million users) creates a customer reach that purely digital marketplaces cannot match.

📥 Official Kaufland.de Seller Application sellerportal.kaufland.de — free application, 5–10 business days approval →

Kaufland.de market data and growth (2024–2026)

Since the 2021 rebrand, Kaufland.de has been growing faster than any other major German marketplace. GMV (gross merchandise value), seller count and active customers are climbing 30–50% year over year.

Year	GMV (EUR)	Orders	Active customers	Sellers
2021 (launch)	~€1.2B	40M	20M	6,000
2023	~€2.5B	85M	28M	12,000
2024	~€4B	130M	35M+	18,000+
2025 (forecast)	~€5.5B	180M	40M	24,000

The drivers of this growth are the multi-country strategy (DE+CZ+SK+AT+PL from a single account), the OnSiteAds advertising platform with high ROAS, Lidl Plus app integration for cross-channel marketing, and aggressive seller fees below Amazon levels. For German and European merchants, Kaufland.de is the fastest growth route in German-speaking online commerce.

Becoming a Kaufland.de seller (as of 2026)

1. Legal and tax requirements

To sell on Kaufland.de, you need a registered business based in the EU/EEA. Sole proprietorships, GmbH, UG, AG or foreign equivalents are all eligible; required are a valid VAT ID and the capability to issue e-invoices (XRechnung format).

• Trade registration or commercial register extract
• VAT ID (German or other EU)
• Tax identification number for sole proprietors
• EU bank account (IBAN) for payouts
• LUCID registration (Packaging Act, ZSVR)
• WEEE registration (electrical devices) or Battery Act filing
• Trademark register evidence for protected categories (cosmetics, toys, food)
• AML compliance (Money Laundering Act) at higher volumes

2. Registering in the Kaufland Sellerportal

Registration runs via sellerportal.kaufland.de. The review process typically takes 5–10 business days. Once approved you receive a Client ID, an API key and an API secret — these three credentials are the foundation of every integration.

3. Listing products and content rules

Kaufland.de reviews product listings strictly against the Order Attribute Schema (OAS):

• Title: 50–200 characters, brand + product name + key attribute
• Images: white background, min. 1,200 × 1,200 px, max. 12 photos, no watermarks
• Description: HTML allowed, at least 300 characters, no seller contact information
• Category mapping: Kaufland category ID + OAS required attributes (color, size, material)
• EAN/GTIN: mandatory for most categories — no EAN, no listing
• Energy label: for electrical devices per EU Regulation 2017/1369
• LMIV-required information: for food (allergens, nutrition table)

Kaufland.de commissions 2026

Kaufland.de commissions in 2026 range from 3% to 18% depending on category. On top come 19% VAT (or 7% on books/food), a monthly platform fee and optional OnSiteAds costs. Without clean gross-to-net pricing, the most common seller mistake follows — selling below margin. Here are the three main commission bands:

Net margin calculation: Sale price − commission − VAT − platform fee − shipping cost − cost of goods = net profit. The Zunapro pricing module computes this formula per product and category automatically and blocks sales below your minimum margin threshold.

Kaufland Sellerportal API — technical details

The Kaufland Sellerportal API is a REST interface that lets sellers programmatically sync products, inventory, orders, prices, shipping and returns. Base URL: https://sellerapi.kaufland.com/v2/

API authentication

Authentication is performed via an HMAC-SHA256 signature header using Client ID and Client Secret. Every request carries a timestamp and signature — eliminating replay attacks. The secret does not expire but should be rotated every 6 to 12 months for security.

Key endpoint groups

• Products API — creating and maintaining products, category mapping, OAS validation
• Units API — inventory and prices (bulk endpoint up to 100 units per request)
• Orders API — order retrieval, status updates, ship date
• Shipments API — shipping labels and tracking numbers (DHL, Hermes, DPD, GLS)
• Returns API — review, accept or reject return requests
• Payments API — payout data and invoice reconciliation
• Webhooks — real-time callbacks on order and inventory changes

Rate limits and error handling

The Kaufland API rate limit is 10 requests per second per seller account. When exceeded, the API responds with 429 Too Many Requests. Typical error codes: 400 (invalid product data), 401 (auth error), 404 (category/EAN not found), 500 (platform error — retry). The Zunapro connector implements exponential backoff retry as well as a dead-letter queue for undeliverable requests.

Kaufland OAS and feed integration — bulk product uploads

The Order Attribute Schema (OAS) is Kaufland's official data model for product attributes. Each category has its own set of required fields (e.g., fabric composition for fashion, wattage for electrical devices, best-before date for food). Via CSV, XML or direct API feeds, you upload thousands of products in minutes.

OAS field structure (Kaufland compliant)

The required fields of a Kaufland feed:

• id_offer — unique seller product ID (groups variants)
• ean, manufacturer, title, mpn, condition
• category_id (Kaufland category) + attributes (OAS required fields)
• amount (inventory), price, min_price, vat_rate
• delivery_time (in business days), warehouse_id, shipping_group
• images (1–12 URLs), description (HTML)
• energy_label, lmiv_data (where applicable)

Supplier feeds to Kaufland.de

Many German and European wholesalers (Wortmann, ALSO, Ingram Micro, Tradeshop, BigBuy and others) publish their catalogs as CSV/XML. The Zunapro OAS module:

1. Reads the supplier feed URL hourly or daily via cron
2. Learns the category mapping (first mapping manual, after that AI-assisted)
3. Normalizes attributes such as brand, material and size to the Kaufland OAS
4. Calculates the sale price = cost + margin + commission + shipping
5. Monitors inventory — items out of stock at the supplier are deactivated
6. Uploads to Kaufland.de via the Sellerportal API

Multi-country: Kaufland.de + CZ + SK + AT + PL from one account

One of the strongest arguments for Kaufland.de is the multi-country program: with a single Sellerportal registration, you sell across five countries simultaneously — Germany, Czechia, Slovakia, Austria and Poland. Translations, price conversion (€/CZK/PLN) and country-specific shipping rules are managed centrally.

Multi-country advantages

• One registration, five markets — no separate contract per country
• Automatic translation of title and description (DE → CZ/SK/PL)
• Local payout in the respective currency (€/CZK/PLN) or bundled in euros
• OSS-compliant VAT — simplifies intra-Community supplies
• Schwarz Group logistics via Lidl/Kaufland stores for local last-mile

For German merchants, this is the fastest path to CEE expansion — without negotiating new contracts, translators or tax advisors in every country. Zunapro orchestrates the multi-country logic end-to-end inside the panel — you maintain the product once, Zunapro propagates it to all 5 country versions.

Kaufland.de Sellerportal score and cancellation rates

Kaufland.de assigns each seller a Sellerportal score from 1 to 100, which directly affects marketplace visibility. Score-driving factors:

• Cancellation rate — stock-driven cancellations are the harshest penalty; above 2% triggers a warning, above 5% risks suspension
• Shipping delay — orders not shipped within the stated handling time
• Return rate — above the category average (fashion 25–35%, electronics 3–8%, household 8–12%)
• Customer ratings — should stay consistently above 4.2 out of 5 stars
• Response time — messages must be answered within 24 hours

Zunapro's automatic inventory synchronization reduces cancellation risk by 90% — products sold in your shop, warehouse or on another marketplace are hidden on Kaufland.de within seconds.

Kaufland OnSiteAds, promotions and intelligent pricing

Kaufland OnSiteAds (advertising platform)

• Sponsored Products — top positions in search results (CPC-based in €/click)
• Sponsored Brands — banners and brand presence on category pages
• Algorithmic budget optimization — automated CPC bids
• Promotional placements — visibility on Black Friday, Singles Day and Christmas

Intelligent pricing (repricer)

Buy Box competition on Kaufland.de is intense. When 10 or more sellers list the same product, the one with the best price-to-score ratio wins. The Zunapro Repricer adjusts prices second-by-second against competitors — and never undercuts your configured minimum margin.

Kaufland.de e-invoicing (XRechnung) and tax integration

Since January 1, 2025, e-invoicing has been mandatory for B2B in Germany. By 2028 it will be phased in for all businesses. The XRechnung (XML-based standard by KoSIT) is the required format for public-sector buyers and, starting 2028, for most B2B transactions. B2C purchases on Kaufland.de remain valid with classic PDF invoices but should also be automated.

Zunapro e-invoicing module:

• Automatic invoice creation in XRechnung (XML) and ZUGFeRD 2.x (hybrid PDF/A-3)
• Integration with DATEV, Lexware, sevDesk, Lexoffice and SAP Business One
• Automatic credit notes on returns
• VAT pre-registration and OSS reporting (for multi-country sales)
• PDF invoice via email to end customers, XML to B2B business partners

Kaufland.de shipping integration — DHL, Hermes, DPD and GLS

Kaufland.de supports all major German parcel carriers: DHL Paket, Hermes, DPD, GLS and UPS (for express). Unlike Amazon FBA, there is no nationwide Kaufland fulfillment — you ship from your own warehouse or a 3PL partner.

Zunapro's multi-carrier module automatically picks the cheapest carrier based on weight, destination and customer preference, prints shipping labels, hands the tracking number to Kaufland via API and triggers the shipping notification to the end customer.

Kaufland.de returns and customer service management

Return rates in Germany are higher than in any other EU market — fashion 30–50%, electronics 3–8%, household 8–12%. Sellers who don't process returns cleanly quickly lose Sellerportal score and Buy Box visibility.

Kaufland.de standard returns process:

1. Customer opens a return in their Kaufland account within 14 days of delivery
2. Kaufland generates a return label (DHL/Hermes), free for the buyer
3. Goods are sent to the return address provided by the seller
4. Seller reviews and confirms the return within 1–3 business days in the Sellerportal
5. Kaufland refunds the purchase price automatically to the customer

The Zunapro returns module maps this workflow end-to-end, automatically creates a cancellation/credit XRechnung and reactivates inventory in the warehouse as soon as the goods have been inspected.

Kaufland.de integration with Zunapro — setup in 4 steps (10 minutes)

1. Enter Kaufland credentials — In the Zunapro panel under Marketplace → Kaufland, enter the Client ID, API key and API secret from the Sellerportal.
2. Connect your existing shop — Shopify, WooCommerce, Shopware 6, OXID eShop, JTL Wawi, PrestaShop and Magento 2 ship with ready-to-use connectors. API URL plus access token is all you need.
3. OAS category wizard — Drag and drop your shop categories onto Kaufland categories. AI suggestions handle the rest within minutes.
4. First synchronization — Products, inventory, prices, orders and shipping kick off the automatic sync. After 10 minutes your Kaufland.de shop is fully manageable from the Zunapro panel.

Official Kaufland.de Seller Application

If you do not yet have a Kaufland.de seller account, apply directly in the Sellerportal. After approval, combine the credentials with Zunapro for full automation.

Official Kaufland.de Seller Application →

Frequently asked questions about the Kaufland.de integration (FAQ)