How to Challenge a Public Tender in Denmark (2026): Standstill, Deadlines & the Complaints Board

If you are a supplier or tenderer that has received an unfavourable award decision in a Danish public procurement procedure, understanding exactly how to challenge a public tender in Denmark is critical, and the clock starts ticking immediately. Denmark operates a dedicated administrative review system centred on the Complaints Board for Public Procurement (Klagenævnet for Udbud), housed within Nævnenes Hus, which offers a faster and less costly route than court litigation.

This guide provides the complete 2026 procedural playbook: the standstill period that temporarily prevents the contracting authority from signing the contract, the 45-calendar-day filing window for complaints, the documents you need, the remedies available, and the practical steps to take within the first 48 hours of receiving an award notification. Whether you are an in-house procurement lead, a frustrated bidder, or international counsel advising a Danish subsidiary, the step-by-step framework below will help you act decisively and protect your rights under the Danish complaint system.

Quick Summary: What This Guide Covers

In short: a supplier that believes a Danish contracting authority has breached the Public Procurement Act (Udbudsloven) may file a complaint with the Complaints Board for Public Procurement. The complaint must normally be filed within 45 calendar days of the publication of the contract award notice. During the mandatory standstill period, typically a minimum of 10 calendar days from notification of the award decision, the authority may not sign the contract, giving the aggrieved tenderer time to act.

What to do in the first 48 hours after an award decision:

1. Review the award notification carefully. Identify the date of the decision, the winning tenderer, and the stated reasons for not selecting your bid.
2. Calculate the standstill deadline. Count forward from the date the notification was sent to determine when the authority may lawfully sign the contract.
3. Request access to evaluation documents. Submit a formal request for the evaluation report, scoring sheets, and any clarification correspondence under the Danish Access to Public Administration Files Act.
4. Assess your grounds for complaint. Identify specific breaches of the Public Procurement Act, errors in scoring, unlawful award criteria, failure to reject an abnormally low tender, or procedural irregularities.
5. Engage specialist procurement counsel. A complaint to the Board must be precisely drafted and supported by evidence; early legal advice is essential.

Who can complain? Any economic operator with a legal interest in the procurement procedure, meaning any company that submitted a tender, requested to participate, or was prevented from doing so by an alleged breach, may file a complaint. Certain industry associations may also have standing in specific circumstances.

If you need immediate guidance, you can find public procurement lawyers in Denmark through the Global Law Experts directory.

Legal Background: The Public Procurement Act and Who Can Complain

The statutory foundation for all public procurement challenges in Denmark is the Public Procurement Act (Udbudsloven), which transposes the EU procurement directives (Directive 2014/24/EU for classic public contracts and Directive 2014/25/EU for utilities) into Danish law. The Act governs how contracting authorities must advertise, evaluate, and award public contracts above the applicable EU thresholds, and it establishes the procedural rules that give aggrieved tenderers the right to seek review.

The Danish complaint system is administered by the Complaints Board for Public Procurement, an independent quasi-judicial body that handles first-instance complaints about alleged breaches of procurement law. The Board sits under Nævnenes Hus (the Danish Board Centre) and is composed of a chairperson (a High Court judge) and expert members with procurement expertise. The Danish Competition and Consumer Authority (Konkurrence- og Forbrugerstyrelsen, DCCA) also plays a supervisory role and may itself bring complaints before the Board on matters of general public interest.

Key Legal Definitions

• Contract award notice. The formal notice published in the EU’s Tenders Electronic Daily (TED) database and, for below-threshold contracts, on udbud.dk, announcing which tenderer has won the contract. This publication date triggers critical deadlines.
• Award decision notification. The contracting authority’s individual communication to each tenderer informing them of the award decision. This notification triggers the standstill period.
• Legal interest. The complainant must demonstrate a direct and existing interest in the procurement procedure, typically by having participated as a bidder or having been unlawfully prevented from participating.

Standstill Period in Denmark: Rules, Computation and Exceptions

The standstill period is the single most important procedural safeguard for any supplier considering how to challenge a public tender in Denmark. It creates a mandatory pause between the contracting authority’s notification of its award decision and the earliest date on which it may lawfully conclude the contract. During this window, the unsuccessful tenderer can evaluate the decision, obtain documents, and, if necessary, file a complaint with the Complaints Board to prevent the contract from being signed.

Under the Danish Public Procurement Act, the contracting authority must observe a standstill period of at least 10 calendar days when the award decision notification is sent electronically (which is standard practice). Where notification is sent by other means, the standstill period is at least 15 calendar days. The period begins on the day after the authority dispatches the notification to the tenderers. This is a critical distinction from some other EU Member States and from the UK system, where the standstill is often framed in working days.

In Denmark, the count is in calendar days, weekends and public holidays are included in the count, but if the final day falls on a weekend or public holiday, it is extended to the next working day.

Worked Examples: Computing the Standstill

Example 1, Standard electronic notification (midweek). A contracting authority emails its award decision notification on Wednesday, 4 June 2026. The standstill period begins on Thursday, 5 June, and runs for 10 calendar days. The earliest the authority may sign the contract is Sunday, 15 June, but because this falls on a weekend, the effective standstill expiry is Monday, 16 June 2026.

Example 2, Friday notification with public holiday. The authority sends its notification electronically on Friday, 29 May 2026. Day 1 is Saturday, 30 May. Counting 10 calendar days brings us to Monday, 8 June. If 5 June is a public holiday (Constitution Day, Grundlovsdag), it is still counted as a calendar day within the period. The standstill expires on 8 June 2026, which is a working day, no extension needed.

Industry observers note that in practice many contracting authorities voluntarily extend the standstill beyond the statutory minimum to reduce the risk of a successful complaint. A 12–15 calendar-day standstill is not uncommon, particularly in complex procurements.

When Does Suspensive Effect Apply?

If a complaint is filed with the Complaints Board before the standstill period expires, the complaint has automatic suspensive effect, meaning the contracting authority is prohibited from signing the contract until the Board has ruled on the suspensive effect or until a specified period has elapsed. This automatic suspensive effect is one of the most powerful tools available to an aggrieved tenderer, because it preserves the status quo and prevents the award from becoming a fait accompli.

However, the automatic suspensive effect applies only if the complaint is filed during the standstill. If you miss the standstill window, you can still file a complaint within the 45-day deadline, but you will need to request an interim order from the Board (or an injunction from the ordinary courts) to prevent contract performance, a significantly harder threshold to meet.

Exemptions From the Standstill Requirement

The Public Procurement Act permits contracting authorities to conclude a contract without observing a standstill period in limited circumstances:

• Extreme urgency. Where unforeseeable events justify immediate contract conclusion, but the authority must demonstrate genuine urgency, not merely administrative inconvenience.
• Single-tender procedures. Where only one tender was received and the authority is not required to publish a contract award notice.
• Certain framework agreement call-offs. Individual call-offs under existing framework agreements may not trigger a separate standstill, depending on the specific terms of the framework.

Deadlines for Filing a Complaint: The Procurement Complaint Deadline in Denmark and the 45-Day Rule

Understanding the procurement complaint deadline in Denmark is essential because missing it means losing access to the Complaints Board entirely. The general rule is that a complaint must be filed within 45 calendar days from the day after the contracting authority publishes a contract award notice in TED (the EU’s official procurement journal). This is the standard deadline for above-threshold procurements.

For situations where no contract award notice is published, for instance, where the authority has entered into an illegal direct award, separate deadlines apply. In such cases, the complaint must generally be filed within 30 calendar days from the date the authority published a voluntary transparency notice, or within six months of the contract being concluded if no notice was published at all.

Worked Calculation: The 45-Day Rule

Scenario. A contract award notice is published in TED on Tuesday, 1 April 2026. Day 1 of the 45-day period is Wednesday, 2 April. Counting 45 calendar days forward, the final day to file falls on Friday, 16 May 2026. If 16 May were a Saturday, Sunday, or Danish public holiday, the deadline would extend to the next working day.

Quick checklist for computing your deadline:

1. Identify the exact date the contract award notice was published in TED (not the date of the award decision itself).
2. Start counting from the day after publication (day 1).
3. Count 45 calendar days inclusively.
4. If the 45th day falls on a non-working day, the deadline is the next working day.
5. File the complaint with the Board and serve a copy on the contracting authority simultaneously.

How to Serve a Complaint Properly

A valid complaint must be filed with the Complaints Board and simultaneously served on the contracting authority. Failure to serve the authority at the time of filing is a formal deficiency that can result in the complaint being dismissed. The complaint should be addressed to Nævnenes Hus and must clearly identify the contracting authority, the procurement procedure in question, the specific provisions of the Public Procurement Act alleged to have been breached, and the relief sought.

The Board’s secretariat will check the complaint for formal compliance upon receipt. If deficiencies are identified, the complainant will typically be given a short deadline to rectify them, but relying on this grace period is risky, particularly where the standstill period is about to expire.

How to Challenge a Public Tender in Denmark: Preparing and Filing a Complaint Step by Step

Filing a complaint with the Complaints Board for Public Procurement in Denmark requires careful preparation. The complaint is a formal legal submission, and its quality materially affects both the Board’s willingness to grant interim measures and the eventual outcome. Below is a step-by-step guide to assembling and filing your complaint.

Fees and Administrative Formalities

The Complaints Board charges an administrative filing fee. Economic operators should consult the current fee schedule published by Nævnenes Hus, as fees have been subject to periodic adjustment. If the complainant is successful, the fee is refunded. Beyond the filing fee, the complainant bears its own legal costs (counsel fees, document preparation) and may be ordered to contribute to the contracting authority’s costs if the complaint is found to be manifestly unfounded, though such cost orders are relatively uncommon in practice.

Electronic Filing and Language

Complaints are filed electronically through Nævnenes Hus. The working language of the Complaints Board is Danish, and all submissions, correspondence, and evidence should be in Danish. If key documents (such as the tender or contract specifications) are in English, the Board may accept them without translation in certain cases, but it is prudent to provide Danish translations of any material the Board will need to analyse closely. International suppliers should factor translation time into their planning, particularly during the tight standstill window.

Process map after filing:

1. Filing and fee payment. Complaint submitted to Nævnenes Hus; simultaneous service on contracting authority.
2. Formal check. Board secretariat reviews for completeness and standing.
3. Suspensive effect assessment. If filed during standstill, automatic suspensive effect applies; otherwise, the Board assesses any interim-measures request.
4. Written proceedings. The contracting authority (and typically the winning tenderer, as an intervener) files a defence; the complainant may reply.
5. Decision. The Board issues a written decision; oral hearings are scheduled in complex or high-value cases.

Remedies, Automatic Suspensive Effect in Denmark, and Costs

Understanding the remedies available is essential when assessing whether to pursue a challenge. The Complaints Board for Public Procurement has a broad range of powers under the Danish complaint system:

• Interim suspension. The Board can order the contracting authority not to conclude the contract (or to suspend performance of a contract already concluded) pending the outcome of the complaint.
• Setting aside the award decision. If the Board finds that the authority breached the Public Procurement Act, it can annul the award decision and require the authority to re-evaluate or re-tender.
• Declaration of ineffectiveness. In the most serious cases, typically where the authority concluded a contract in breach of the standstill obligation or without proper advertising, the Board can declare the contract ineffective (uden virkning), effectively unwinding it.
• Shortening of contract duration. As an alternative to ineffectiveness, the Board may shorten the duration of the contract.
• Damages. The Board can award damages to a complainant that demonstrates it suffered loss as a result of the breach. Damages are calculated based on the complainant’s lost profit or, where that is difficult to prove, tender preparation costs.

Automatic Suspensive Effect vs. Ordered Suspension

The distinction between automatic suspensive effect and ordered suspension is crucial. As noted above, a complaint filed during the standstill period triggers automatic suspensive effect: the contracting authority simply cannot sign the contract. If the complaint is filed after the standstill has expired, there is no automatic suspension, the complainant must explicitly request interim measures, and the Board applies a stricter test, weighing the likelihood of success against the public interest in concluding the contract and any harm to the winning tenderer.

Industry observers note that in practice, securing ordered suspension after the standstill has expired is significantly more difficult. For this reason, the unanimous advice among procurement practitioners is to file within the standstill period wherever possible.

When to Seek Injunctive Relief in Courts vs. the Complaints Board

In rare cases, particularly where the standstill has expired and the authority is about to commence contract performance, a supplier may need to seek injunctive relief from the ordinary Danish courts rather than (or in addition to) the Complaints Board. Court proceedings are faster for emergency injunctions but significantly more expensive and procedurally complex. The likely practical effect of choosing the court route is higher upfront costs and the need for full legal representation, but it may be the only viable option where timing is critical and the Board’s interim-measures procedure would be too slow.

Evidence, Access to Documents and Practical Tips for Suppliers

Building a strong evidence base is the foundation of any successful procurement challenge. Danish law provides tenderers with a right to request access to documents held by contracting authorities, subject to certain exemptions for trade secrets and confidential business information.

What to request immediately after the award decision:

• The evaluation report. This documents how each tender was scored against the published award criteria.
• Scoring matrices or assessment sheets. Detailed scoring breakdowns reveal whether criteria were applied consistently.
• Minutes of evaluation committee meetings. These can expose procedural irregularities or bias.
• Clarification correspondence. Any questions exchanged between the authority and the winning tenderer during the evaluation phase.
• The winning tender (to the extent not confidential). Comparing the winning bid against the evaluation criteria can reveal scoring errors.

When submitting an access-to-documents request, be specific about the documents you need and reference the Danish Access to Public Administration Files Act (Forvaltningsloven). Contracting authorities may redact commercially sensitive information, but they cannot refuse access to the evaluation report itself. If an authority refuses a request or applies excessive redactions, this refusal can itself form part of a complaint to the Complaints Board.

Practical Tips

• Preserve all communications. Save every email, letter, and notification from the contracting authority, including read receipts and timestamps.
• Export tender portal records. Download your own submission records, any amendment notices, and Q&A logs from the electronic tendering platform before access expires.
• Note confidentiality boundaries. When filing evidence with the Board, clearly mark any information you consider confidential with a separate non-confidential version for the opposing party.

Quick-Action Checklist and Sample Timelines

Use this checklist to track your critical actions and deadlines from the moment you receive an award decision.

48-hour actions:

• Read the award notification and identify the date of dispatch
• Calculate the standstill expiry date
• Submit an access-to-documents request to the contracting authority
• Contact specialist procurement counsel
• Preserve all tender documents and portal records

Within the standstill period (10 calendar days):

• Receive and analyse evaluation documents
• Identify specific grounds for complaint
• Draft and file complaint with Nævnenes Hus (to trigger automatic suspensive effect)
• Serve the complaint on the contracting authority simultaneously
• Pay the filing fee

Within 45 calendar days of the contract award notice:

• If not filed during standstill, file complaint with the Complaints Board before the 45-day deadline
• Include a request for interim measures if the contract has not yet been concluded
• File supplementary evidence and arguments as proceedings progress

Sample Timeline Table: Three Scenarios

Next Steps After a Board Decision: Procurement Review Proceedings in Denmark

Once the Complaints Board issues its decision, either party may appeal to the ordinary Danish courts. An appeal must be brought before the relevant district court (Byretten) within eight weeks of the Board’s decision being communicated to the parties. The court conducts a full review of both the factual and legal findings.

If the Board has awarded damages, enforcement follows the standard Danish rules for civil judgments. If the Board ordered the award decision to be set aside, the contracting authority must either re-evaluate or re-tender the contract, and it must do so in compliance with the Board’s findings.

When to Engage Local Counsel vs. International Counsel

For international companies participating in Danish procurements, the practical advice is to engage Danish-qualified counsel as early as possible. The complaint must be filed in Danish, the proceedings are governed by Danish procedural rules, and the Udbudslov standstill provisions have specific national features that differ from other EU Member States’ transpositions. International counsel can add value in coordinating cross-border procurement strategies, but local expertise is essential for the complaint itself.

Conclusion: Protect Your Rights, Know How to Challenge a Public Tender in Denmark

Challenging a public tender award in Denmark is a tightly time-bound process that rewards preparation and speed. The standstill period in Denmark gives you a narrow but powerful window to assess the award decision and, if the grounds are there, to file a complaint that automatically prevents the contract from being signed. Missing the standstill does not end your options, the 45-day complaint deadline still applies, but it significantly weakens your position on interim measures.

The key actions are clear: calculate your deadlines immediately, request evaluation documents within 48 hours, engage specialist Danish procurement counsel, and file your complaint with the Complaints Board before the standstill expires if at all possible. With the right preparation and evidence, the Board has broad powers to set aside unlawful award decisions, order re-evaluation, and award damages.

For suppliers navigating this process, having experienced local counsel is not optional, it is essential. Browse the Public Procurement practice area on Global Law Experts or find public procurement lawyers in Denmark to connect with specialists who can advise on your specific situation.

Sources

1. Nævnenes Hus, The Complaints Board for Public Procurement (Annual Report / Complaint Guidelines)
2. The Public Procurement Act (English Translation), Udbudslov.dk
3. Danish Competition & Consumer Authority (DCCA), Danish Complaint System
4. Business in Denmark (Virk), Public Procurement Act Overview
5. Lexology, Public Procurement Review Proceedings in Denmark (2025)
6. GOV.UK, Procurement Act 2023 Guidance: Contract Award Notices and Standstill
7. Kromann Reumert, Procurement Law Practice