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.

44 Articles
6 Categories
3 Languages

Procedures & Execution

Procurement procedures, timelines and implementation rules

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

How do you fill in the European Single Procurement Document? When is it mandatory, how does the XML format work, and how do you reuse it for subsequent tenders?

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?

Framework agreements and mini-competitions: winning in phase 1 and phase 2

How do framework agreements work? Single/multiple operators, mini-competitions, cascade mechanism and duration.

General execution rules (AUR): payments, surety, penalties and acceptance

What does the Royal Decree of 14 January 2013 regulate? The key rules on payment terms, surety, delay penalties and acceptance in Belgian public procurement.

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.

Deadlines, questions and information notes: room to manoeuvre and risks

Which deadlines apply in public procurement? How to ask questions via the forum, how to handle rectification notices, and when are deadlines extended?

Competitive procedure with negotiation, competitive dialogue and innovation partnership

When are special procedures used? How do negotiations, dialogue rounds and innovation partnerships work, and how do you prepare as a tenderer?

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 you prove it?

Subcontracting in public procurement: obligations, chain liability and exclusion risk

What are the rules on subcontracting in Belgian public procurement? Disclosure obligation, exclusion checks, chain liability and changes during execution.

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 and guarantees in public procurement

How does the surety work in public procurement? Amount, exemption, release and the 2023 reforms. Practical guide for tenderers.

Contractor recognition: classes, categories and public works contracts in Belgium

How does the contractor recognition system work in Belgium? Categories A-P, classes 1-8, thresholds and the link with selection criteria in public procurement.

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