Generally, the contract has to be awarded to the most economic bid or offer. According to Paragraph 3 of Article 43, where price is the only award criterion, the lowest-priced tender will be awarded. Nonetheless, if there exists award criteria in addition to price, the successful tender will be the most advantageous bid. The most advantageous bid will be assessed on the basis of the criteria and procedures for evaluating tenders as specified in the solicitation documents. Moreover, if the tender prices are expressed in multiple currencies, the tender prices must be converted to the currency specified in the solicitation documents. The procuring entity has the authority to reject the successful tender if the supplier or contractor fails to demonstrate its qualifications upon the procuring entity's request. In such cases, the procuring entity will select the next successful tender among the remaining tenders.

Pursuant to Article 20, the procuring entity may reject a submission if it determines that the offered bid price is abnormally low in relation to the subject matter of the procurement and raises concerns for the procuring entity.

The Model Law does not address this.