Notify or Not? Merger Notification vs No‑notification in Turkey (2026), Risks, Penalties & When to File with the TCA

Every cross-border acquisition that touches Turkey forces the same binary choice: notify vs not notify the merger in Turkey before closing. The question confronts PE deal teams structuring bolt-on acquisitions with Turkish revenue, in-house counsel at multinationals signing SPAs with tight long-stop dates, and foreign acquirers whose target’s only link to Turkey is a distribution agreement and modest local turnover. Getting the answer wrong in 2026 is materially more expensive than it was even two years ago. The Turkish Competition Authority (TCA, Rekabet Kurumu) has sharpened its enforcement posture on unnotified transactions and gun-jumping, raising both the probability and the cost of retrospective intervention.

This article delivers a side-by-side comparison of the two paths, a dimension-by-dimension analysis grounded in Law No. 4054 and the TCA’s merger communiqués, a concrete merger control decision framework, and an immediate playbook for deal teams that have already closed and suspect a filing should have been made.

Option A: Notify, File a Merger Notification with the TCA

What “Notify” Means Under Turkish Law

Filing a merger notification in Turkey means submitting a formal application to the TCA under Law No. 4054 (the Act on the Protection of Competition) and the secondary legislation governing concentrations, principally the Communiqué on Mergers and Acquisitions Calling for the Authorisation of the Competition Board (Communiqué No. 2010/4, as amended). Once the notification is lodged, the transaction is subject to a mandatory standstill obligation: the parties may not implement the deal, transfer shares, exercise voting rights, or integrate operations, until the TCA either grants explicit clearance or the statutory review period expires without a decision. The suspensory effect of a merger notification in Turkey is automatic and absolute for transactions that meet the filing thresholds.

Closing or integrating before clearance constitutes gun-jumping, regardless of whether the parties believe the deal raises no competitive concerns.

When Filing Applies, Thresholds and Jurisdictional Tests

The obligation to notify is triggered when a transaction qualifies as a “concentration” (merger, acquisition of control, or formation of a full-function joint venture) and exceeds the turnover thresholds set out in the Communiqué. The thresholds are based on the Turkish turnover and total turnover of the parties. The TCA periodically revises the monetary thresholds to reflect economic conditions, deal teams must verify the thresholds in force at the date of signing, not at an earlier indicative date. Transactions between two foreign undertakings (foreign-to-foreign deals) are notifiable if Turkish turnover thresholds are met, and the TCA has increasingly scrutinised such deals, particularly in the technology and digital-platform sectors.

Who This Option Suits

Filing suits risk-averse acquirers, transactions with direct product or service overlap in Turkey, deals in regulated sectors such as medical devices or pharmaceuticals, and any acquisition where the buyer intends to integrate Turkish operations promptly after closing. It also suits sellers who need legal certainty that the deal will not be unwound post-completion, a concern that increasingly drives SPA negotiations in 2026.

Option B: Not Notify, Proceed Without Filing

What “Not Notify” Looks Like in Practice

Choosing not to file means the parties close the transaction without seeking TCA clearance. In practice this usually involves an internal legal assessment that the thresholds are not met, documented in a memorandum retained on file. Some deal teams add a further safeguard: an escrow or holdback against potential regulatory exposure, or carve-out provisions in the SPA that limit Turkish integration until a post-closing reassessment is completed. The parties do not contact the TCA, and no standstill period applies.

When Parties Consider Not Filing

This path is considered when the target’s Turkish turnover is clearly below the applicable threshold, the combined market share in any Turkish product market is negligible, or the transaction involves a passive, minority stake with no change of control. It is also considered where the target has no assets, employees, or direct customers in Turkey and the only Turkish nexus is indirect, for example, downstream resale by a third-party distributor.

Who This Option Suits

Low-impact bolt-on acquisitions, portfolio-level financial investments without operational control, and non-strategic share acquisitions in sectors with no Turkish competitive overlap are the clearest cases. Deal teams under severe time pressure, for example, distressed-asset sales with court-imposed deadlines, may also evaluate this path, provided they document the analysis and accept quantified risk.

Common Operational Controls to Reduce Exposure

Parties that close without notifying frequently adopt interim controls: data-segregation protocols (no sharing of competitively sensitive Turkish market information), a prohibition on joint procurement or coordinated pricing in Turkey, retention of independent management for the Turkish subsidiary, and contractual holdbacks or indemnities in the SPA. These measures do not eliminate the legal risk of a missed filing, but they reduce the practical severity of a gun-jumping allegation if the TCA later investigates. A voluntary notification in Turkey remains available post-closing, the TCA accepts retrospective filings, although doing so after integration has begun compounds the gun-jumping exposure.

Notify vs Not Notify Merger in Turkey: Side-by-Side Comparison

The table below summarises the two paths across every dimension that matters to a deal team. Each cell is drawn from the framework established by Law No. 4054, the Communiqué on Mergers and Acquisitions, and TCA enforcement practice.

Sources: Law No. 4054, Articles 7, 10–12, and 16; Communiqué on Mergers and Acquisitions Calling for the Authorisation of the Competition Board (Communiqué No. 2010/4, as amended); TCA enforcement decisions and guidance on suspensory effects.

Dimension-by-Dimension Analysis: Notify vs Not Notify Merger in Turkey

Eligibility and Thresholds, Who Must File

A concentration is notifiable if it meets the turnover thresholds prescribed in the Communiqué. The tests combine total Turkish turnover of the parties and the individual Turkish turnover of at least one party. The TCA periodically updates the threshold figures, so deal teams must verify the values current at the date their transaction closes. A quick self-screening involves the following questions:

• Combined Turkish turnover test. Does the aggregate Turkish turnover of all parties to the transaction exceed the combined-turnover threshold in force?
• Individual Turkish turnover test. Does the Turkish turnover of at least two of the parties individually exceed the single-party threshold?
• Asset/sales overlap test. Do the acquirer and target compete in the same product or geographic market in Turkey, or are they in a vertical relationship?
• Foreign-to-foreign nexus. Is the target’s only Turkish link indirect (e.g., exports via distributors), or does it have assets, employees, or direct sales in Turkey?
• Change of control. Does the transaction confer sole or joint control? Passive minority acquisitions without control rights are generally not notifiable.

A transaction that answers “yes” to the first two questions is almost certainly notifiable. A transaction that answers “yes” only to the overlap and control questions but falls below thresholds may still benefit from a voluntary notification to eliminate enforcement risk.

Cost and Filing Fees

The TCA does not charge an official filing fee for merger notifications. The direct cost of filing is therefore limited to external counsel and, where the TCA requests a detailed market analysis, economic consultants. The table below contrasts the expected cost profile of each path. All figures are illustrative estimates as of July 2026 and will vary by transaction complexity.

The absence of a TCA filing fee means the financial barrier to notification is low relative to the cost of retrospective enforcement. For borderline transactions, the economics almost always favour filing.

Timing and Practical Waiting Periods

The TCA’s review framework operates in two phases. Phase I is a preliminary examination lasting up to 30 calendar days from the date the notification is deemed complete. The vast majority of notified transactions are cleared in Phase I, many within two to three weeks. If the TCA identifies competition concerns, it may open a Phase II investigation, which can extend the review period significantly. Transactions that present no overlap or only de minimis overlap in Turkey routinely benefit from expedited Phase I clearance.

Deal teams should file early, ideally concurrently with or shortly after signing the SPA, to maximise the overlap between the review period and the time needed for other closing conditions (regulatory approvals in other jurisdictions, shareholder votes, financing conditions).

Liability, Gun-Jumping and Penalties for Not Notifying a Merger

Gun-jumping in Turkey encompasses two distinct violations: (1) failing to notify a notifiable transaction, and (2) implementing a notifiable transaction before TCA clearance, even if a notification has been filed. Article 16 of Law No. 4054 empowers the TCA to impose administrative fines on undertakings that breach the standstill obligation or fail to file. The TCA has demonstrated an increasing willingness to investigate and sanction gun-jumping, including in foreign-to-foreign transactions with Turkish effects.

Practical acts that constitute high-risk gun-jumping include:

• Exercising voting rights or appointing directors to the target’s Turkish subsidiary before clearance.
• Integrating sales teams, aligning pricing, or coordinating customer bids in Turkey.
• Joint procurement or supply-chain consolidation involving Turkish operations.
• Sharing competitively sensitive information beyond what is necessary for due diligence.

The distinction between administrative fines (which are common) and criminal liability (which is rare and generally reserved for cartel conduct) is important. Gun-jumping penalties in Turkey are administrative in nature, but they can be accompanied by orders to unwind the transaction or divest assets, a far more disruptive outcome than the fine itself.

Enforceability and Remedies, Structural vs Behavioural

When the TCA identifies competition concerns during its review, it may clear the transaction subject to conditions. Structural remedies, typically divestiture of overlapping business lines or assets, are the TCA’s preferred tool for addressing horizontal concerns. Behavioural remedies (commitments to maintain access, supply on fair terms, or refrain from certain commercial practices) are used where structural divestiture is disproportionate. For parties that filed, remedies are negotiated in a predictable process and can be factored into deal economics before closing. For parties that did not file and are subsequently investigated, the TCA may impose remedies retrospectively, including orders to reverse integration steps already taken, a scenario that is operationally and financially far more damaging.

Cross-Border Considerations, Foreign-to-Foreign M&A

The TCA asserts jurisdiction over foreign-to-foreign transactions whenever the Turkish turnover thresholds are met, regardless of where the parties are incorporated or where the deal is signed. In 2024–2026, the TCA has placed heightened scrutiny on transactions involving digital platforms, technology-sector targets, and data-intensive businesses with Turkish user bases, even where the target has no physical presence in Turkey. Industry observers expect this trend to continue, driven by global regulatory convergence on digital-market competition concerns. Foreign acquirers should treat any material Turkish revenue stream, any Turkish user base, or any Turkish distribution network as a potential filing trigger, and should document their threshold analysis even when they conclude that filing is not required.

What Changed in 2024–2026, The Enforcement Recalibration

The period from 2024 to 2026 has seen a tangible shift in the TCA’s enforcement posture toward unnotified transactions and gun-jumping. Several developments are relevant to the notify vs not notify merger Turkey calculus:

• Threshold adjustments. The TCA has periodically revised the monetary turnover thresholds in the Communiqué to reflect inflation and economic conditions. Deal teams that relied on outdated threshold figures have found their transactions unexpectedly caught by updated values. Verification of the thresholds in force at the exact date of signing is now essential.
• Increased scrutiny of foreign-to-foreign deals. The TCA has opened investigations and requested retrospective filings for foreign-to-foreign transactions in the technology, e-commerce, and data sectors, signalling that indirect Turkish effects are no longer treated as safely below the radar.
• Gun-jumping enforcement actions. The TCA Board has issued decisions sanctioning gun-jumping, both failure-to-notify and premature implementation, in a range of sectors. These decisions have been accompanied by fines and, in certain cases, orders to unwind integration steps. The practical effect is a higher expected cost of not notifying when the transaction sits near the filing thresholds.
• OECD-aligned enforcement trends. Turkey’s enforcement trajectory aligns with broader OECD competition-enforcement trends, including greater willingness to impose structural remedies and to cooperate with other jurisdictions on multi-market investigations.

The cumulative effect for deal teams is straightforward: the tolerance band for “borderline, probably safe to skip” has narrowed. Transactions that would have been closed without a filing in 2022 now carry a meaningfully higher risk profile in 2026.

Merger Control Decision Framework: When to Choose Notify vs Not Notify

The following framework distils the analysis into actionable triggers. It is designed for deal counsel and commercial leads who need to make a filing decision within the constraints of a live transaction timetable.

Choose Notify When:

• The target has significant Turkish turnover, direct Turkish customers, or a Turkish subsidiary, and the statutory thresholds are met or arguably met.
• The combined market share in any Turkish product or geographic market would be meaningful, or the parties are in a vertical supply relationship in Turkey.
• The transaction involves a regulated sector, a digital platform, or a data-intensive business with Turkish users.
• The buyer intends to integrate Turkish operations promptly after closing and cannot tolerate the risk of a TCA order to unwind.
• The SPA cannot safely include strong indemnities for regulatory exposure, or the seller is not creditworthy to back a post-closing indemnity.
• Multiple jurisdictions require filing and the Turkish notification can run in parallel with other filings at minimal incremental cost.
• The deal is high-profile or likely to attract media or competitor attention in Turkey.

Choose Not Notify When:

• Both parties’ Turkish turnovers are demonstrably below the statutory thresholds with no realistic prospect that the TCA would assert jurisdiction.
• The acquisition is a passive, minority stake with no change of control, no board seats, and no integration rights.
• The target has no assets, employees, or direct sales in Turkey; the only Turkish nexus is indirect resale through an independent distributor.
• Time-sensitive commercial imperatives (e.g., court-ordered distressed-asset sale) outweigh the cost of potential remediation, and the parties accept quantified risk with documented mitigation.
• The SPA includes robust indemnities, escrow, and a post-closing reassessment mechanism to address potential TCA exposure.

Priority-Based Decision Table

The decision framework consistently favours notification for any transaction where the thresholds are met or genuinely arguable. The economics, no filing fee, manageable counsel costs, and a disproportionately high cost of retrospective enforcement, tilt the merger control decision framework toward filing in almost every borderline case.

When to Engage a Lawyer for This Decision

Certain situations require immediate legal counsel. Do not attempt a self-assessed “below threshold” conclusion without professional verification if any of the following apply:

• You have a signed SPA with a short long-stop date and have not yet assessed TCA filing obligations, the standstill period may require an amendment to the closing timetable.
• Integration steps are planned or have already begun before any TCA assessment, this is a live gun-jumping exposure that requires an immediate stop-work protocol.
• The threshold analysis is borderline, Turkish turnover figures are close to the statutory thresholds, or the method of calculating Turkish turnover (e.g., export vs domestic sales, intra-group allocations) is uncertain.
• The transaction is foreign-to-foreign with indirect Turkish effects, technology acquisitions, digital-platform deals, and cross-border transactions involving Turkish assets require specialist jurisdictional analysis.
• You have already closed and now suspect the transaction should have been notified, a voluntary retrospective filing, accompanied by a remediation plan, is the best available path to mitigate gun-jumping exposure, and speed is critical.

Specialist counsel will deliver a screening memo confirming whether notification is required, prepare or amend the SPA to include a merger-control condition precedent, draft the notification form and supporting market analysis, develop a voluntary disclosure and mitigation strategy if filing was missed, and represent the parties in any TCA investigation or enforcement proceeding.

Sources

1. Turkish Competition Authority (Rekabet Kurumu), Official Website
2. Law No. 4054 on the Protection of Competition, Official Text (Mevzuat)
3. Official Gazette of the Republic of Turkey (Resmi Gazete)
4. International Competition Network (ICN), Turkey Merger Notification Template
5. OECD Competition Division, Enforcement Reports and Policy Papers