How to Get Merger Control Clearance in Germany, Step-by-step Guide (2026)

Any buyer, seller or private-equity sponsor planning a transaction that meets Germany’s statutory turnover thresholds must understand how to get merger control clearance in Germany in 2026 before the deal can legally close. The Bundeskartellamt (Federal Cartel Office) administers a mandatory, suspensory regime under the Act Against Restraints of Competition (GWB), meaning parties may not consummate a notifiable concentration until clearance is granted. This guide sets out the complete procedure, from threshold screening through Phase I and Phase II review to final clearance, together with the documents checklist, a worked merger control timeline, costs, and the 2026 reform proposals that deal teams need to build into their transaction planning now.

Overview of the Merger Control Process and Who It Applies To

Germany’s merger control regime is set out in Part 3 of the GWB. The Bundeskartellamt is the sole enforcing authority for transactions that fall within German jurisdiction and do not meet the thresholds for exclusive review by the European Commission under the EU Merger Regulation. The regime applies to every form of “concentration”, share acquisitions, asset deals, joint ventures, and the acquisition of competitively significant influence, provided the parties’ combined worldwide and domestic turnover exceeds the notification thresholds prescribed by Section 35 GWB.

The process operates on a two-phase statutory clock. Phase I is an initial assessment lasting one month from the date the Bundeskartellamt registers a complete notification. If the authority identifies competition concerns during Phase I, it may open a Phase II in-depth investigation, which extends the total review period to approximately five months. If the Bundeskartellamt does not act within the statutory timeframes, clearance is deemed granted by operation of law.

Critically, merger control in Germany is suspensory. Section 41 GWB imposes a standstill obligation: the parties must not implement the concentration, in whole or in part, until the Bundeskartellamt has cleared it or the statutory review period has expired. Closing in breach of the standstill carries the risk of the transaction being declared void and of significant fines. This makes early identification of notification obligations a non-negotiable step in every German deal timetable.

The regime applies equally to domestic and cross-border transactions. Foreign-to-foreign deals are caught if the parties generate sufficient turnover in Germany. Private-equity portfolio acquisitions, add-on acquisitions by portfolio companies, and minority stake acquisitions conferring competitive influence all fall within scope. In-house counsel and deal advisors should screen every transaction against the GWB filing requirements before signing, and ideally before finalising the transaction structure.

Eligibility and Prerequisites for Merger Control Clearance in Germany

Not every acquisition requires a Bundeskartellamt notification. The filing obligation is triggered only when the transaction constitutes a “concentration” under the GWB and the parties’ turnover crosses the statutory thresholds.

Who Is Responsible to Notify

The obligation to notify rests on the undertakings directly involved in the concentration. In a share or asset purchase, the acquiring party typically files. In a merger or the creation of a full-function joint venture, all parties to the transaction bear the notification duty. The GWB does not require the target company to file, although its cooperation in providing market data and financial information is essential for a complete submission. In practice, the filing party’s external counsel prepares and submits the notification on behalf of the client, coordinating with all parties to assemble the required information.

Notification Thresholds, How to Calculate Turnover

The notification thresholds are set out in Section 35 GWB. A concentration is notifiable if all of the following cumulative conditions are met:

• Combined worldwide turnover. The combined aggregate worldwide turnover of all undertakings concerned exceeds €500 million.
• Domestic turnover, first party. At least one undertaking concerned has domestic (German) turnover exceeding €50 million.
• Domestic turnover, second party. At least one other undertaking concerned has domestic turnover exceeding €17.5 million.

Turnover is calculated on a group-wide basis, following the attribution rules in Section 36(2) GWB. This means the entire corporate group to which each party belongs is included, not just the specific entity signing the SPA. For private-equity sponsors, the turnover of all portfolio companies within the same fund structure may be aggregated, which can push otherwise small add-on deals above the notification thresholds.

Worked examples illustrate common scenarios. A share purchase of a German target by a multinational buyer will be notifiable if the buyer’s group worldwide turnover exceeds €500 million and both the buyer and target independently meet the domestic thresholds. An asset carve-out requires turnover to be attributed to the assets being transferred, typically based on the revenue generated by the acquired business unit. A full-function joint venture is assessed by reference to the parents’ group turnover. Minority stake acquisitions are caught only if they confer “competitively significant influence”, a fact-specific assessment that depends on the rights attached to the stake (veto rights, board representation, access to commercially sensitive information).

When EU Review Supersedes German Review

Where a concentration has a “Community dimension” under the EU Merger Regulation (Council Regulation (EC) No 139/2004), exclusive jurisdiction lies with the European Commission, and a separate Bundeskartellamt notification is not required, and indeed not permitted, unless the Commission refers the case back to Germany under Article 9. Deal teams must therefore run a parallel threshold check at EU level. If the EU thresholds are met, the German filing drops away. If they are not, or if a referral occurs, the German regime applies in full. Coordinating the jurisdictional analysis early prevents duplicative work and avoids the risk of filing with the wrong authority.

Step-by-Step Procedure to Get Merger Control Clearance in Germany

The Bundeskartellamt notification process follows a structured sequence. Below is each step in the order deal teams should execute it, followed by a consolidated timeline table.

1. Pre-notification screening and informal contact with the Bundeskartellamt.

   Before submitting a formal notification, the filing party should conduct an internal threshold check against Section 35 GWB using the most recent audited financial statements of all undertakings concerned. Where the analysis is borderline, for instance, where domestic turnover is close to the €17. 5 million threshold or where the question of “competitively significant influence” is uncertain, it is standard practice to contact the responsible decision division at the Bundeskartellamt informally. The authority is generally willing to discuss jurisdictional questions and, in more complex cases, to hold a pre-notification meeting to identify potential competition concerns early.

   This step is not mandatory, but it materially reduces the risk of the notification being returned as incomplete or the review being extended because market-definition issues were not anticipated.

2. Prepare and submit the notification to the Bundeskartellamt.

   The filing party prepares the notification using the Bundeskartellamt’s notification form. The form requires comprehensive information about the parties, the transaction structure, the affected markets, the parties’ market shares and competitive conditions, and the turnover figures that trigger the filing obligation. All documents needed for the merger filing should be assembled before the form is finalised, see the Required Documents section below for the full checklist.

   The notification may be submitted by post, by fax, or electronically. The Bundeskartellamt’s published guidance confirms these submission modes. The filing language is German. In practice, supporting documents such as the SPA or board resolutions may be submitted in English, but the notification form itself and any cover letter should be in German unless the Bundeskartellamt has agreed otherwise in the pre-notification dialogue.

   On receipt, the Bundeskartellamt registers the notification and confirms the filing date. This registration date starts the Phase I statutory clock. If the notification is incomplete, the authority will request supplementary information, and the clock may not start, or may be stopped, until the filing is considered complete. Completeness is therefore a critical practical objective.

3. Phase I review, initial assessment and Section 41 suspension.

   Phase I lasts one month from the date the Bundeskartellamt registers a complete notification. During this period, the authority conducts an initial competitive assessment. It may request additional information from the parties or third parties (customers, competitors, suppliers). From the moment of filing, the Section 41 GWB standstill obligation takes effect: the parties must not close the transaction, exercise voting rights in the target, or otherwise implement the concentration until clearance is granted or the statutory period expires without a prohibition decision. If the Bundeskartellamt does not initiate Phase II proceedings within the one-month period, the transaction is deemed cleared by operation of law.

4. Phase II in-depth investigation and remedies negotiation.

   If the Bundeskartellamt identifies serious competition concerns in Phase I, it opens a Phase II in-depth investigation. The Bundeskartellamt has explained that the initiation of Phase II proceedings extends the total review period to approximately five months from the original filing date. During Phase II, the authority conducts a detailed market investigation, issuing formal information requests, interviewing market participants, and often commissioning or reviewing economic evidence on market definition, competitive effects, and efficiencies.

   Remedies discussions can begin at any stage of Phase II. The parties may offer commitments, such as divestitures of overlapping businesses, licensing of intellectual property, or behavioural undertakings, to address the authority’s concerns. If remedies are agreed, the Bundeskartellamt issues a conditional clearance decision, attaching the commitments as binding conditions. Remedies typically extend the timeline because they require negotiation, market testing, and drafting of legally binding undertaking documents. In complex cases, the authority may appoint a monitoring trustee to oversee implementation of the commitments.

   If the parties do not offer adequate remedies and the authority concludes that the concentration would significantly impede effective competition, it may prohibit the transaction. Prohibition decisions are rare, the Bundeskartellamt clears the large majority of notified concentrations, but the possibility underscores the importance of early engagement on competitive concerns.

5. Clearance issued and consummation notice.

   Upon clearance, whether unconditional at the end of Phase I, conditional after Phase II, or deemed by expiry of the statutory period, the parties may close the transaction and implement the concentration. The Bundeskartellamt expects the parties to notify it of the consummation of the concentration after closing. This is a formal but straightforward step that confirms the transaction has been implemented.

Required Documents and Information for a Bundeskartellamt Notification

A complete filing is the single most effective way to avoid delays. The Bundeskartellamt will not register a notification, and the Phase I clock will not start, until all mandatory information has been provided. Below is a practitioner-ready checklist of the documents needed for a merger filing in Germany, distinguishing between core filing requirements and supplementary materials that deal teams should prepare in parallel.

In practice, the most frequent cause of delay is an incomplete or internally inconsistent market-share calculation. Deal teams should begin assembling market data during due diligence, well before the notification is prepared. Where the parties’ own data is insufficient, third-party market reports and industry association statistics can supplement the filing. The Bundeskartellamt may also issue formal information requests to third parties during its review, but the more robust the initial filing, the fewer supplementary rounds are required.

It is advisable to maintain a “notification readiness” workstream from the point of signing, with a dedicated team responsible for data collection, turnover verification, and market definition analysis. This workstream should feed directly into the notification form to avoid last-minute gaps.

Merger Control Timeline and Key Deadlines

How long does merger control clearance take in Germany? The answer depends on whether the case is resolved in Phase I or progresses to Phase II. Below are two worked sample timelines, a straightforward Phase I clearance and a more complex Phase II scenario, to help deal teams set realistic signing-to-closing schedules.

For a straightforward Phase I case, the entire merger control timeline from signing to closing can be managed within approximately 8–10 weeks. For a Phase II case, deal teams should plan for approximately 6–7 months from signing to closing, including a buffer for remedies negotiation and any information-request delays.

The Section 41 GWB standstill applies throughout. The SPA should include a merger-control conditionality clause making closing expressly conditional on Bundeskartellamt clearance. Long-stop dates should be set with sufficient margin to accommodate a potential Phase II review. Interim operating covenants, restricting the target’s conduct between signing and closing, are standard and should be drafted carefully to avoid any argument that the buyer is exercising control over the target before clearance, which itself could constitute gun-jumping in breach of the standstill obligation.

Costs, Fees, and Financial Considerations for Merger Control Clearance

Budgeting for the clearance cost of a German merger control filing requires consideration of several distinct cost categories. The table below sets out indicative ranges, all figures are estimates and should be verified against the Bundeskartellamt’s current published guidance and confirmed with specialist counsel for the specific transaction.

Deal teams should build merger-control advisory costs into the overall transaction budget from the outset. For straightforward Phase I cases, legal costs are moderate. Where Phase II is a realistic possibility, particularly in transactions involving horizontal overlaps with combined market shares above 30–40 per cent, the budget should reflect the substantially higher cost of economic analysis, remedies design, and extended engagement with the authority.

What Changes in 2026, Statutory and Practice Developments

The 2026 landscape for merger control in Germany features both pending legislative reform and a sharpened enforcement posture from the Bundeskartellamt. In June 2026, the Federal Ministry for Economic Affairs and Climate Action (BMWK) published a draft proposal to amend the GWB, including proposed adjustments to the notification thresholds under Section 35. Industry observers expect these threshold changes, if enacted, to reduce the number of filings required for smaller transactions, but to intensify scrutiny of larger, more competitively sensitive deals.

Deal teams should monitor the legislative process closely. If the draft is enacted with transitional provisions, transactions signed before the effective date but closing after it may need to assess both the current and proposed thresholds. The prudent approach is to include a dual-threshold analysis in SPA conditionality clauses and to build flexibility into long-stop dates to accommodate any mid-deal legislative changes.

On the enforcement side, early indications suggest the Bundeskartellamt is accelerating its Phase II review timetable and adopting a more interventionist approach to remedies, particularly in energy, digital, and infrastructure sectors. Deal teams in these sectors should anticipate detailed market investigations and prepare robust economic evidence from the outset.

Common Pitfalls and How to Avoid Them

• Closing before clearance (gun-jumping). The most serious risk. Implementing any part of the concentration, including exercising voting rights, appointing directors, or integrating operations, before Bundeskartellamt clearance violates Section 41 GWB and can render the transaction void. Draft the SPA with an explicit merger-control condition precedent and robust interim operating covenants that prevent the buyer from influencing the target’s competitive conduct.
• Filing an incomplete notification. An incomplete filing delays the start of the Phase I clock and can add weeks to the overall timeline. Assemble all documents needed for the merger filing, especially the turnover calculation and market share data, before submission. Use the pre-notification process to confirm that the Bundeskartellamt considers the filing complete.
• Poorly defined product and geographic markets. Market definition is the foundation of the competitive assessment. Parties that submit a narrow or insufficiently supported market definition risk extended information requests and adverse preliminary findings. Prepare economic evidence, including internal documents and third-party data, that supports the proposed market definition from the outset.
• Failing to coordinate parallel filings. Cross-border transactions often require notifications in multiple jurisdictions. Failure to coordinate the timing and substance of parallel filings, with the European Commission, other national competition authorities, and foreign-investment screening bodies, can create inconsistencies and delays. Appoint a lead counsel to manage the multi-jurisdictional filing strategy from signing.
• Ignoring 2026 legislative changes. Relying on outdated thresholds or failing to account for transitional rules in pending GWB amendments can lead to either a missed filing obligation or unnecessary filings. Include a legislative-change monitor in the deal workstream and update the threshold analysis as the reform process progresses.

Sources

1. Bundeskartellamt, Merger Control (Overview)
2. Bundeskartellamt, Obligation to Notify a Merger (Key Aspects)
3. Bundeskartellamt, Legal Framework / Merger Control Laws
4. Gesetze im Internet, Act Against Restraints of Competition (GWB)
5. Bundesgesetzblatt / Bundesanzeiger (Federal Law Publication)
6. Federal Ministry for Economic Affairs and Climate Action (BMWK)