Tender

A tender is a formal offer submitted by an economic operator in response to a public procurement procedure, proposing to supply goods, execute works, or deliver services under the conditions specified in the procurement documents. The tender contains the technical and financial proposals that will be evaluated against the published award criteria to determine which offer provides the best value to the contracting authority. Tenders are the central instrument through which competition occurs in public procurement: without competing tenders, the procurement system cannot fulfil its core objectives of value for money, transparency, and equal treatment.

How It Works

The tender process begins when a contracting authority publishes a call for competition -- typically a contract notice -- specifying the goods, works, or services required, the applicable selection criteria and award criteria, and the deadline for submission. Economic operators that wish to compete then prepare and submit their tenders within the specified timeframe.

Tender components. A tender typically consists of three main elements:

Technical proposal: Describes how the tenderer will perform the contract. This may include a methodology statement, work plan, staffing plan with CVs of key personnel, quality assurance measures, implementation timeline, and any innovative approaches. For construction contracts, it might include design drawings, environmental impact measures, and health and safety plans. For IT procurement, it might encompass system architecture descriptions, data migration plans, and service-level commitments.
Financial proposal: Presents the price or cost information. Depending on the award criteria, this may be a single total price, a breakdown by lot, unit prices, hourly rates, a life-cycle cost calculation, or a combination. The financial proposal is typically submitted in a separate sealed envelope or digital container to ensure that technical and financial evaluations can be conducted independently.
Administrative and legal documentation: Includes the European Single Procurement Document (ESPD) or equivalent self-declaration, evidence of compliance with selection criteria, certificates confirming the absence of exclusion grounds, and any other declarations or undertakings required by the procurement documents.

Submission methods. EU procurement law increasingly mandates electronic submission. Most above-threshold procurement procedures require tenders to be submitted through the contracting authority's e-procurement platform. The platform timestamps the submission, ensuring that the deadline is applied uniformly. Late submissions are automatically rejected with no discretion for the contracting authority.

Tender validity period. Procurement documents typically specify a period during which the tender must remain valid and binding -- often 60 to 120 days. During this period, the tenderer cannot withdraw or modify its offer. If the evaluation takes longer than anticipated, the contracting authority may request an extension of the validity period, which tenderers may accept or decline.

Variants and alternative tenders. Some procurement procedures allow tenderers to submit variant tenders that propose alternative solutions to those specified in the procurement documents. Article 45 of Directive 2014/24/EU permits variants only if the contracting authority has explicitly authorised them in the contract notice and has set minimum requirements for variants. This mechanism encourages innovation by allowing tenderers to propose approaches the contracting authority may not have considered.

Joint tenders. Economic operators may submit joint tenders as a group (consortium or joint venture) to combine resources and capabilities. Joint tenders are common when no single entity meets all selection criteria or when the contract scope requires diverse expertise. All members of a joint tender are jointly and severally liable for the contract.

Abnormally low tenders. When a tender appears significantly below the expected price range or below other tenders, the contracting authority must investigate before rejecting it. Article 69 of Directive 2014/24/EU requires the authority to request an explanation from the tenderer, covering factors such as manufacturing methods, technical solutions, favourable conditions, state aid, and compliance with labour and environmental law. The authority may reject the tender only if the explanation is unsatisfactory.

Legal Framework

Article 2(1)(11) of Directive 2014/24/EU defines a tender as the response submitted by an economic operator for the purpose of concluding a public contract.

Article 27 establishes minimum time limits for the receipt of tenders in open procedures: 35 days from the date of dispatch of the contract notice, reducible to 15 days if the contracting authority published a prior information notice or provides electronic access to procurement documents. For restricted procedures (Article 28), tenders must be received within 30 days of the invitation to tender.

Article 56 governs the evaluation process. Contracting authorities must verify that tenders are complete, comply with formal requirements, and meet the minimum specifications. They may request clarifications or completion of missing documents, provided this does not amount to negotiation or modification of the tender.

Article 57 establishes exclusion grounds that render a tender inadmissible regardless of its content. Article 58 sets out the selection criteria that the tenderer must meet. Article 67 defines award criteria against which compliant tenders are evaluated.

Article 69 addresses abnormally low tenders, establishing the mandatory investigation procedure and the grounds on which such tenders may be rejected (non-compliance with environmental, social, or labour law obligations).

In Germany, the VgV (Sections 53-57) transposes tender submission and evaluation rules. German procurement law is particularly strict about formal compliance -- missing signatures, unsigned declarations, or late submissions typically result in automatic exclusion. In France, the Code de la commande publique (Articles R2151-1 to R2152-12) governs tender submission, evaluation, and the contracting authority's obligation to analyse abnormally low offers.

Practical Examples

A regional authority publishes an open procedure for the supply and maintenance of 200 electric buses. A vehicle manufacturer submits a tender comprising a technical proposal (bus specifications, delivery schedule, maintenance programme, training for drivers), a financial proposal (unit price per bus, annual maintenance cost, spare parts pricing), and administrative documentation (ESPD, financial statements, reference contracts for similar fleet deliveries). The tender is evaluated against published award criteria: 50 percent quality (technical merit, environmental performance, after-sales service), 30 percent life-cycle cost, and 20 percent delivery timeline.

In an IT procurement restricted procedure, a government ministry invites five shortlisted candidates to submit tenders for a new case management system. Each tender includes a 100-page technical proposal with system architecture, integration plan, and data migration approach, a staffing plan with CVs of 15 key personnel, and a fixed-price financial proposal. The evaluation panel scores each tender against four sub-criteria: functional requirements coverage (30 percent), technical architecture quality (25 percent), implementation approach (25 percent), and total cost of ownership (20 percent).

An SME specialising in renewable energy maintenance submits a tender for a single lot of a multi-lot framework agreement for solar panel maintenance across government buildings. The SME's tender focuses on its regional coverage, specialised equipment, and competitive pricing for the assigned geographic lot, demonstrating that lot division has enabled its participation.

Key Considerations for Suppliers

Compliance is non-negotiable. The most common reason for tender rejection is formal non-compliance: missing documents, unsigned declarations, late submission, or failure to address mandatory requirements. Suppliers should create a compliance checklist based on the procurement documents and verify every element before submission. Many e-procurement platforms provide built-in validation, but suppliers should not rely solely on automated checks.

Understand the award criteria weighting. The tender should be shaped by the published award criteria and their relative weights. If quality is weighted 70 percent and price 30 percent, investing effort in a technically superior proposal yields more evaluation points than aggressive pricing. Conversely, in a lowest-price evaluation, the technical proposal need only meet minimum requirements.

Price strategically. Pricing must be competitive but sustainable. An abnormally low tender will trigger an investigation under Article 69, and if the supplier cannot justify the pricing, the tender will be rejected. Beyond the legal risk, winning a contract at an unsustainable price creates delivery problems that damage the supplier's reputation and may result in penalties.

Invest in references and evidence. The technical proposal is strengthened by concrete evidence: reference projects with measurable outcomes, case studies, third-party certifications, and client testimonials. In construction and IT, where technical risk is high, contracting authorities place significant weight on demonstrated experience.

Consider joint bidding. When a supplier lacks the full range of capabilities required, a joint tender with complementary partners can be more competitive than subcontracting arrangements. Joint tenders demonstrate integrated delivery capability, which evaluators typically rate higher than a main-contractor-plus-subcontractor model.

Protect confidential information. Tenders may contain trade secrets, proprietary methodologies, or pricing information. Suppliers should be aware of their rights regarding confidential treatment of tender content and should clearly mark any information that should not be disclosed to competitors or the public.

Tenders are submitted by tenderers -- economic operators that have decided to compete. The award is the decision selecting the winning tender. Award criteria determine how tenders are evaluated. The contract notice is the publication that invites tenders. Selection criteria assess the tenderer's capability before the tender content is evaluated. Abnormally low tenders are subject to mandatory investigation. Lots enable tenderers to bid for portions of a larger contract. The standstill period gives unsuccessful tenderers time to challenge the award decision after tenders are evaluated.

Frequently Asked Questions

Can a tenderer modify its tender after submission?

In general, no. Once submitted, tenders are binding for the validity period specified in the procurement documents. However, in procedures involving negotiation (competitive procedure with negotiation, competitive dialogue), the contracting authority may negotiate with tenderers, leading to revised offers. In open and restricted procedures, the contracting authority may only request clarification or completion of the tender, not substantive modifications (Article 56, Directive 2014/24/EU).

What happens if only one tender is received?

A single tender does not automatically invalidate the procedure. The contracting authority may proceed with evaluation and award if the tender meets all requirements and offers value for money. However, a single-tender situation may prompt the authority to investigate whether the procurement was sufficiently publicised, whether the requirements were overly restrictive, or whether market conditions explain the limited response. Some national rules require justification for awarding on the basis of a single tender.

Are tender documents public after the award?

Access to tender documents varies by jurisdiction. Under EU law, the contracting authority must protect the tenderer's confidential information (Article 21, Directive 2014/24/EU). However, the award decision must disclose the characteristics and relative advantages of the winning tender to unsuccessful tenderers. In some Member States, freedom-of-information laws allow third parties to request access to tenders, subject to redaction of trade secrets and genuinely confidential information.