Knowledge Base

Everything about public procurement

From your first tender to winning bid strategy — the definitive reference guide for Belgian public procurement, built by tender experts.

54 Articles
6 Categories
3 Languages

Getting Started

Essential knowledge for public procurement

Finding your first tender

Learn how to use TenderWolf to find and monitor relevant public procurement opportunities.

What Is a Public Contract? — Definition and Procedures

What is a public contract or tender? Full definition, types (works, supplies, services), EU thresholds and the procedures contracting authorities use.

Data coverage & methodology: how TenderWolf collects public tenders

Which sources does TenderWolf cover, how quickly are publications available, and how do matching and AI analysis work? Our methodology explained.

How does e-Procurement work in Belgium? The complete overview

The Belgian e-Procurement platform: e-Notification, e-Tendering, Free Market and e-Catalogue. Setup and profiles.

CPV Codes Public Procurement — How to Find the Right Code?

What are CPV codes? The 9-digit EU classification system for public procurement — structure, sector examples and how to find the right code for your tender.

Tender Specifications Belgium — Administrative & Technical

What are tender specifications in Belgian public procurement? Administrative vs technical, structure, standard cahiers and reading tips.

TED and European publication: how does it work?

Everything about Tenders Electronic Daily (TED), the European publication obligation, eForms, and how to find and monitor European tenders as a contractor.

European thresholds and estimation rules: when does EU procurement apply?

How are the European thresholds calculated? Estimation rules, artificial splitting prohibition, and current thresholds for Belgian public procurement.

Contract types: works, supplies, services and mixed contracts

What is the difference between a works, supply and service contract? How to determine the main subject in mixed contracts, and why the classification matters.

Procedures & Execution

Procurement procedures, timelines and implementation rules

Filling in the ESPD: a step-by-step guide

How to fill in the European Single Procurement Document (ESPD), when it's mandatory, the XML format, and how to reuse it for subsequent tenders.

Evidence dossier in public procurement — certificates, Telemarc and 'only once'

What does Telemarc retrieve automatically, what must you supply, and at which stage? Complete guide to the Belgian evidence dossier in public procurement.

How to correctly interpret a tender specification — guide and case-law

How to read a Belgian tender specification without errors. Document hierarchy, contra proferentem, Q&A forum and 'or equivalent' — with recent case-law.

Price revision in public procurement: the formula explained

How does price revision work? Revision formula with S-index and I-2021, mandatory revision, and mismatches.

Open and restricted procedure: impact on strategy and planning

When does an authority choose an open or restricted procedure? What does that mean for your planning, your selection dossier and your tender?

What Is a Framework Agreement? — Mini-Competitions Explained

What is a framework agreement in public procurement? How mini-competitions work, the cascade mechanism, duration and how to position yourself as a tenderer.

Belgian Execution Rules (AUR) — Royal Decree 14 Jan 2013

What are the Belgian General Execution Rules? The AUR (Royal Decree 14 January 2013) governs surety, payments, penalties and acceptance. Updated 2023-2025.

Contract modifications during execution: when is it still the same contract?

When may a contract be modified without new procurement? Review clauses, de minimis, circumstances.

E-invoicing in public procurement: obligations, Peppol and onboarding

When is e-invoicing mandatory in Belgian public procurement? The UBL format, Peppol network, Mercurius platform and how SMEs can prepare.

Information Note and Deadlines — Questions, Rectifications

What is an information note in public procurement? Deadlines, questions to the contracting authority, rectification notices and how to submit on time.

Negotiation, Competitive Dialogue & Innovation Partnership

When can a contracting authority negotiate, hold dialogue rounds or procure innovation? The three special procedures under EU directive 2014/24 — explained.

Reliance on third parties and consortia: governance, documents and liability

How do you collaborate in a temporary association or consortium in public procurement? Which capabilities can you 'borrow' from third parties, and how do.

Subcontracting in Public Procurement — Rules and Risks

How does subcontracting work in Belgian public procurement? Disclosure, exclusion checks, joint and several liability, and the rules on replacement.

Common irregularities in tenders: how to avoid exclusion

Which errors lead to exclusion in public procurement? Substantial vs non-substantial irregularities, missing documents, and how the authority handles them.

Electronic auction and dynamic purchasing system (DPS): how do they work?

What is an electronic auction in public procurement and how does a dynamic purchasing system work? Conditions, procedure and bidding strategy.

Variants and options in public procurement

When may a tenderer submit a variant? What is the difference with an option? Rules, conditions and strategic use.

Surety in Public Procurement — Amount, Release, Exemption

How does the surety work in Belgian public procurement? 5% of the contract sum, automatic release within 15 days (since 2023), exemptions and cash flow.

Belgian Contractor Recognition — Classes and Categories

Which recognition class do you need for your contract? Categories D, P, S, T... classes 1 to 8 — amounts, requirements and application procedure FPS Economy.

Belgian Class 8 Contractor Recognition — Requirements

What does Belgian Class 8 contractor recognition require? For contracts above €5,330,000: technical capacity, financial standing and FPS Economy application.

Contractor recognition subcategories — full breakdown per category

Complete breakdown of contractor recognition subcategories (A to V) in Belgium, with class amounts, recent Council of State case-law and pitfalls for bidders.

Selection & Award

Selection criteria, award criteria and evaluation

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