Collusion (MDB Definition)

The multilateral development banks define collusion as an arrangement between two or more parties designed to achieve an improper purpose, including influencing improperly the actions of another party in the procurement or execution of a bank-financed contract.

What is Collusion (MDB Definition)?

Collusion in MDB procurement refers primarily to bid-rigging: competitors coordinating their bids to suppress genuine competition, allocate contracts among themselves, or fix prices so that one party wins at an inflated rate while others submit cover bids. It also covers situations where a bidder and an evaluator coordinate to skew the result, or where a supplier and a subcontractor agree in advance on terms that undermine the competitive process.

Unlike competition law, the MDB definition does not require proof of a formal agreement. A pattern of behaviour consistent with an arrangement is sufficient for an integrity investigation. Collusion is one of five sanctionable-practices under the mdb-harmonised-framework and carries the same risk of debarment and cross-debarment as fraud-mdb-definition and corruption-mdb-definition.

Why Collusion matters for bidders

Legitimate joint ventures and teaming arrangements are not collusion, but the line matters. Suppliers forming a consortium or subcontracting arrangement for a specific tender need to ensure that each party is genuinely contributing, that bid prices are set independently of competitors outside the consortium, and that the arrangement is disclosed where required. Information sharing with competitors outside a declared joint venture, including pricing signals exchanged at pre-bid meetings or industry events, is a red-flag behaviour that integrity investigators look for in document reviews and interview patterns.

FAQ

Is a joint venture the same as collusion?

No. A disclosed joint venture where the parties compete together as a single bidder is legitimate. Collusion occurs when nominally independent bidders coordinate their bids without disclosing the arrangement, suppressing genuine competition.

What evidence do MDB integrity units use to identify collusion?

Investigators look at bid price similarities, identical errors across bid documents, shared IP addresses on electronic submissions, common subcontractor use, and communications between competing firms obtained through document requests or whistleblower reports.

Can subcontractors be sanctioned for collusion?

Yes. If a subcontractor is party to the arrangement designed to achieve the improper purpose, they fall within the definition and can face the same sanctions as the prime contractor.