How Belgian public procurement works

Belgian public procurement is deliberately complex — not through ill will, but because the regulation has accumulated in layers: national (2016 law), European (directive 2014/24/EU), and municipal (specific regulations per contracting authority). This article provides a practical overview of how the system works, which portals are relevant, and where to look.

Who publishes what

Every Belgian public institution that wants to purchase something above a certain threshold is required to publish it. “Public institution” is broadly defined: federal government, regions, provinces, municipalities, welfare centres (OCMW/CPAS), intermunicipal associations, public healthcare institutions, universities.

The notice must in principle always appear on BOSA e-Procurement — the national platform. Above the European thresholds, the tender is also published on TED (Tenders Electronic Daily). That is why you sometimes see the same tender twice: it is the same tender, two channels.

The thresholds that matter

Until 2027, the following European thresholds apply for works, supplies and services:

• Works: € 5,538,000
• Supplies and services (classical sectors): € 221,000 (central government: € 143,000)
• Supplies and services (utilities sectors): € 443,000

Below these thresholds, publication on TED is not required — only on BOSA. Above these thresholds, the tender becomes European, with additional timelines and formalities.

Types of procedures

The four main procedures you will encounter:

1. Open procedure — anyone may bid. Most common for standard purchases.
2. Restricted procedure — two phases: first selection (candidacy), then award (offer).
3. Competitive procedure with negotiation — for complex or bespoke tenders.
4. Competitive dialogue — for particularly complex tenders where the contracting authority does not yet know which solution is best.

For companies looking to grow in public procurement, it is recommended to start with open procedures — the chances of participation are highest and the administrative burden relatively limited.

Where to search (and why it is difficult)

BOSA is the primary source, but the search functionality is limited: you can filter by CPV code, contracting authority, date and a few other fields — but not on full text of the specification. That means a tender titled “sewer replacement” is easy to find; a tender that only mentions “pressure main under motorway” in annex 3 of the specification is not.

TED has its own filters but the same limitation. Moreover, both portals are visually dated and not built to support daily routines.

From notice to submission

The typical steps from publication:

1. D-30 to D-45: publication. Review the specification, annexes and award criteria.
2. D-15 to D-25: opportunity to ask questions. The contracting authority publishes answers visible to all bidders.
3. D-5: final specification — last changes still possible.
4. D-0: deadline. Usually at a specific time (e.g. 10:00). Late submissions are always rejected.

For works above the thresholds, minimum timelines apply (30 days for open procedure); below the thresholds it is up to the contracting authority to set a reasonable timeline — often shorter.

Where companies get it wrong

Three classic mistakes:

• Starting too late: thoroughly re-reading the specification at D-3 and only then discovering that an additional accreditation is required that you don’t have.
• Missing what is in the specification, not in the title: critical technical requirements in annex 5 that in practice make the tender unsuitable for your company.
• Forgetting documents: NSSO certificate, tax certificate, insurance certificate, annual accounts — all with a limited validity period.

The key is not to bid on everything — it is to know faster where it is worth bidding, and then take the time on those dossiers.

Where Tender Tracker fits

We build exactly for that. Daily digest, filtering on your business profile, full specification search, accreditation check, and a bid dossier that reduces the administrative burden. See the features or start a free trial.