How Swedish Merger Control Works in M&A (2026), Notification, Timelines & Clearance

Merger control Sweden is a mandatory compliance discipline that every deal team must factor into transaction planning from the earliest stage, because a notifiable acquisition cannot legally complete until the Swedish Competition Authority (Konkurrensverket) has cleared it. In 2026, regulatory attention on transaction remedies, market concentration and inter-agency cooperation with Brussels remains significant, which makes accurate timelines and disciplined filing preparation more commercially important than ever. This guide sets out the notification thresholds, the step-by-step filing procedure, the documents required, statutory review periods, cost expectations and the practical pitfalls that most often derail clearance. It is written for in-house counsel, deal lawyers and corporate buyers and sellers who need a practitioner’s operational view rather than a theoretical overview.

Where relevant, it maps the Swedish regime against the parallel European Union layer so that cross-border deal teams can plan coordinated filings.

Overview, what merger control Sweden actually covers

Merger control is the legal mechanism through which competition authorities review concentrations, mergers, acquisitions of control and certain joint ventures, before they take effect, to prevent transactions that would significantly impede effective competition. In Sweden, this function is administered by Konkurrensverket under the Swedish Competition Act (Konkurrenslag, SFS 2008:579). A concentration that meets the statutory turnover thresholds must be notified and cannot be completed until clearance is obtained, a principle commonly referred to as the standstill obligation.

Swedish merger control operates alongside the European Union regime under Council Regulation (EC) No 139/2004, the EU Merger Regulation (EUMR). Deal teams therefore have to determine, at the outset, which system applies, and in some cases both may be relevant. The practical consequence is that competition analysis must run in parallel with commercial negotiation, not after signing.

What is Konkurrensverket?

Konkurrensverket is the Swedish Competition Authority, the national regulator responsible for enforcing Swedish competition law and reviewing merger notifications. It receives filings, conducts Phase I and Phase II reviews, negotiates remedies and issues clearance decisions. Its published guidance and notification forms are the authoritative starting point for any merger filing Sweden deal team must prepare. Where the authority decides a transaction raises serious competition concerns, it can open an in-depth investigation and, ultimately, apply to the Patent and Market Court to block the deal, in the Swedish system, it is the court, not the authority, that formally prohibits a concentration.

Sweden vs EU: complementary systems

The Swedish and EU regimes are complementary rather than duplicative. The EUMR applies where a concentration has an “EU dimension” (formerly “Community dimension”), that is, where the parties’ turnover exceeds the EU thresholds. Where the EU has jurisdiction, its review generally supersedes national review under the “one-stop-shop” principle. Below those thresholds, national regimes such as Swedish merger control apply. For deal teams, the critical early task is to test turnover against both sets of thresholds and decide whether to file in Stockholm, in Brussels, or in both places under a coordinated strategy.

On the question of which advisers to instruct, transactions that touch both regimes benefit from firms with genuine cross-border competition experience, not because international brand matters for its own sake, but because coordinating parallel filings, aligning remedies and managing two authorities’ timetables requires practitioners who have done it before.

Comparison: Konkurrensverket (Sweden) vs European Commission (EUMR)

Eligibility, notification thresholds and when to notify Konkurrensverket

The single most important gate in merger control Sweden is the threshold test. A concentration is notifiable to Konkurrensverket only where the combined turnover of the undertakings concerned exceeds the levels set out in the Swedish Competition Act, and where at least a minimum share of that turnover is generated in Sweden. Because these figures are statutory and periodically reviewed, deal teams must confirm the current thresholds against the Act and Konkurrensverket’s published guidance before relying on any calculation.

Turnover thresholds and domestic nexus

The Swedish regime uses a two-limb turnover test. The first limb looks at the aggregate turnover in Sweden of the undertakings concerned; the second requires that a specified minimum turnover be attributable to each of at least two of the parties within Sweden. The purpose of the second limb is to establish a genuine domestic nexus, so that transactions with only incidental Swedish activity fall outside mandatory notification. The precise threshold amounts are set in the Competition Act and should be verified against the current statute before filing. Turnover is calculated at group level, which means acquirer groups must aggregate the revenues of all controlled entities, a point that regularly catches out deal teams who calculate on a target-only basis.

Market share and the anti-competitive effects test

Meeting the first turnover limb but not the second does not always end the analysis. Where the aggregate turnover test is satisfied but the individual-party turnover limb is not, Konkurrensverket retains the power to require notification of a transaction it considers may harm competition, for example, where the parties have high combined market shares in a narrow Swedish market. The substantive test the authority applies is whether the concentration would significantly impede effective competition, in particular through the creation or strengthening of a dominant position. Deal teams should therefore assess market overlaps even where the second turnover limb is not clearly met.

When EU Commission jurisdiction supersedes Sweden

Where a concentration has an EU dimension under the EUMR, the European Commission generally has exclusive jurisdiction and the parties file in Brussels rather than notifying Konkurrensverket. The reverse is also possible: cases can be referred between the national and EU levels in defined circumstances. The practical rule for planning is straightforward, test EU thresholds first, then Swedish thresholds, and confirm whether a referral is likely. Getting this wrong risks either an unnecessary duplicate filing or, far more seriously, a failure to notify.

Quick test for in-house counsel

• Is there a concentration? A change of control, acquisition, merger or full-function joint venture.
• Do EU thresholds apply? If yes, generally file with the European Commission, not Konkurrensverket.
• Are Swedish turnover thresholds met? Aggregate and individual-party limbs, calculated at group level.
• Are there significant Swedish market overlaps? If yes, consider notification even where the second limb is borderline.

Step-by-step procedure for merger control Sweden in an M&A deal

The following procedure sets out what a deal team should do from initial screening through to clearance. Treat it as an operational checklist: the columns identify who is responsible and the realistic time each stage takes. Merger control Sweden runs most smoothly when competition counsel is engaged early and works in parallel with the commercial negotiation.

Step / Who / Typical duration

Statutory timelines can be paused or extended in defined circumstances, for example where Konkurrensverket issues formal information requests, and the parties may agree to extensions where remedies are under discussion. Deal timetables should always be built on statutory maximums plus a buffer, not on best-case assumptions.

3.1 Pre-transaction screening and internal checklist

The first task is a rapid jurisdictional and substantive screen. In-house counsel and the deal lawyer should establish whether the transaction is a concentration, whether EU or Swedish thresholds are met, and where the competitive overlaps lie. This memo does not need to be exhaustive, but it must be accurate on the two questions that drive everything else: is a filing required, and to which authority. The output is a short decision note that the deal principals can rely on when setting the transaction timetable and drafting conditions precedent.

3.2 Pre-notification engagement with Konkurrensverket

Konkurrensverket offers pre-notification contact, and using it well is one of the highest-value steps in the pre-merger procedure Sweden deal teams can take. Informal engagement allows external counsel to test the authority’s likely theory of harm, agree the scope of the market data required, and identify whether the case is a candidate for straightforward Phase I clearance or a more contentious review. A well-run pre-notification phase reduces the risk of an incomplete filing being rejected and can materially shorten the effective review period.

3.3 Formal notification and filing mechanics

The formal Konkurrensverket notification is made using the authority’s notification form and must contain complete transaction facts, turnover calculations, market descriptions and the parties’ competitive assessment. The clock for Phase I begins only when the filing is complete; an inadequate submission does not start the statutory period. This is why preparation quality directly determines timeline certainty. External counsel usually leads the drafting, drawing turnover and market data from the deal parties and, where overlaps are material, from an economics adviser.

3.4 Phase I: initial review

During Phase I, Konkurrensverket assesses whether the concentration raises competition concerns. The statutory Phase I period is 25 working days from a complete notification. The overwhelming majority of transactions clear at this stage without conditions. If the authority concludes that the deal may significantly impede competition, it can decide to open an in-depth Phase II investigation. Deal teams should treat the closing of Phase I without objection as the practical clearance milestone for uncontroversial transactions.

3.5 Phase II: in-depth investigation and remedies

A Phase II investigation is a substantially longer and more resource-intensive process in which Konkurrensverket examines the transaction’s competitive effects in depth. This is where economic evidence, detailed market data and, where concerns are confirmed, remedies come to the fore. Remedies typically take the form of structural commitments, most commonly divestments of overlapping businesses, and are negotiated between the parties and the authority. Where remedies require a purchaser or an ongoing hold-separate arrangement, a monitoring trustee may be appointed. Parties should plan for several months where Phase II is opened.

3.6 Prohibition, appeal and enforcement risks

In the Swedish system, if Konkurrensverket concludes that a concentration should be prohibited, it applies to the Patent and Market Court (Patent- och marknadsdomstolen), the specialist first-instance court for competition matters, which decides whether to block the deal. The court’s decisions can be appealed to the Patent and Market Court of Appeal (Patent- och marknadsöverdomstolen). Beyond prohibition, deal teams must respect the standstill obligation: completing a notifiable concentration before clearance, known as gun-jumping, exposes the parties to enforcement action, including fines. The combination of appeal exposure and enforcement risk is why disciplined process, not optimism, should drive deal planning.

Required documents, what to include in a Konkurrensverket filing

A complete filing is the precondition for the statutory clock to start, so document preparation is not administrative box-ticking, it is timeline management. The table below sets out the core documents a merger filing Sweden deal team should assemble, why each matters, and who typically provides it.

4.1 Transaction documents

The signed or near-final transaction agreements establish the nature of the concentration and the conditions to completion. Where a competition clearance condition is included in the sale and purchase agreement, its wording should align precisely with the anticipated filing strategy.

4.2 Market and competitor data

Market share and sales data, together with clear market descriptions, allow the authority to assess overlaps quickly. Robust, internally consistent data is the difference between smooth Phase I clearance and repeated information requests that stall the timetable.

4.3 Economic analyses and customer impact

Where overlaps are material, an economic analysis of competitive effects and customer impact strengthens the filing and pre-empts the authority’s likely questions. Engaging an economics adviser early is prudent in any case with a plausible theory of harm.

4.4 Confidentiality handling and redaction best practice

Filings contain sensitive commercial information. Parties should submit a clear confidentiality request and a redaction schedule identifying which data must be protected, particularly where a version of the filing may be shared with third parties during market testing.

Timeline and deadlines, statutory timeframes and practical lead times

Deal timetables live or die on realistic clearance planning. The statutory periods for merger control Sweden are relatively short at Phase I but can extend substantially where a Phase II investigation is opened, and they are frequently affected by pre-notification and information requests that fall outside the formal clock.

5.1 Statutory Phase I deadlines

Phase I runs for 25 working days from the date Konkurrensverket confirms the notification is complete. For a straightforward transaction with no problematic overlaps, this is the outer limit of the effective review period, and clearance is often granted within it without conditions.

5.2 Phase II and suspension rules

Where Phase II is opened, the review extends significantly to allow for detailed investigation and, where necessary, remedies negotiation. The period can be affected by formal information requests and extended by agreement where the parties are working toward acceptable commitments. Deal teams should plan on a materially longer horizon whenever a case has real substantive concerns, and should confirm the current statutory maximum against the Competition Act.

5.3 How filings affect SPA timetables and long-stop clauses

Competition clearance should be built into the sale and purchase agreement as a condition precedent, with a long-stop date generous enough to accommodate a Phase II outcome in any deal with overlap risk. A realistic planning assumption is a few months for uncontroversial transactions and considerably longer for complex matters that go to Phase II with remedies. Setting the long-stop date on best-case assumptions is one of the most common, and avoidable, sources of deal stress.

Costs and fees, what to budget

Budgeting for merger control Sweden means accounting for adviser costs rather than large regulatory fees, together with the potentially significant cost of implementing remedies where a divestment is required. The ranges below are indicative only, vary widely by transaction, and should be confirmed for the specific deal and current exchange rates.

6.1 Regulatory fees

Unlike some jurisdictions, Sweden does not levy a fixed fee for a merger notification. Deal teams should nonetheless confirm the position against current Konkurrensverket guidance before filing, as regulator practice can change.

6.2 External adviser fees

The dominant cost is professional fees. Straightforward Phase I filings are relatively contained; Phase II matters with economic evidence and remedies negotiation are considerably more expensive. Fixed-fee arrangements are sometimes available for simple filings.

6.3 Remedy implementation costs

Where a divestment or hold-separate arrangement is required, trustee and monitoring costs can be substantial and continue for the duration of the commitment. Factor these into the deal economics before agreeing to remedies.

What to watch in 2026 for merger control Sweden

In 2026, deal teams should expect Konkurrensverket to maintain a firm posture on transaction remedies and on transactions that increase concentration in already-tight markets. The likely practical effect is close scrutiny of the adequacy and enforceability of proposed commitments, meaning divestment packages will need to be credible and clean from the outset. Continued cooperation between Konkurrensverket and the European Commission raises the premium on consistent positions across parallel filings. Digital markets remain an area of heightened attention across European competition enforcement. Deal teams should verify the authority’s current enforcement priorities against Konkurrensverket’s published statements before finalising strategy, and should assume that borderline cases will attract more, not less, engagement than in earlier years.

Common pitfalls and how to avoid them

• Calculating thresholds on the wrong basis. Turnover is aggregated at group level, not target level. Under-counting the acquirer’s group revenue leads to missed filings and gun-jumping exposure.
• Filing late or completing early. The standstill obligation prohibits completing a notifiable deal before clearance. Build clearance into the conditions precedent and respect the standstill.
• Submitting an incomplete notification. The Phase I clock only starts on a complete filing. Gaps in market data or turnover figures reset the effective timetable.
• Weak market definition and thin evidence. Inadequate market descriptions and unsupported market shares invite repeated information requests. Invest in robust data and, where overlaps are real, economic analysis.
• Under-resourcing remedies. Where concerns are foreseeable, prepare draft remedies early. Leaving divestment design to the last moment prolongs Phase II and weakens the parties’ position.
• Setting an unrealistic long-stop date. Build the SPA timetable on statutory maximums plus a buffer for Phase II, not on optimistic Phase I assumptions.

Who to instruct and how to choose counsel

Search interest in “the best M&A lawyer” or “the top law firms in Sweden” reflects a real underlying question: how to choose the right adviser for a notifiable transaction. The honest answer is that the ranking of a firm matters far less than the specific experience of the team on merger filings before Konkurrensverket. Look for demonstrable Phase I and Phase II track record, the ability to coordinate parallel EU filings where the EUMR is engaged, and access to credible economic advisers. For cross-border deals, firms with international competition capability add value precisely because coordinating two authorities and two remedies packages is difficult in practice.

Fee structures in the Swedish market are typically hourly, with fixed-fee options available for simpler filings, clarify scope and assumptions before instructing. Deal teams can identify suitable advisers through the GLE lawyer directory, M&A lawyers in Sweden and the M&A practice, Sweden practice area resources.

Conclusion

Merger control Sweden rewards early, disciplined planning: test the thresholds against both the Swedish Competition Act and the EUMR at the outset, decide the filing strategy before signing, use pre-notification engagement to de-risk the process, and build the statutory timelines, with a buffer for Phase II, into the transaction timetable. In 2026, with the authority focused on remedies quality and continued EU cooperation, the margin for procedural error is narrow. Teams that prepare complete filings, invest in credible market evidence and respect the standstill obligation will move through merger control Sweden efficiently; those that treat clearance as an afterthought risk delay, enforcement exposure and lost deal value. Where a notifiable transaction is in prospect, engage specialist competition counsel early.

Sources

1. Konkurrensverket (Swedish Competition Authority)
2. Swedish Competition Act (Konkurrenslag, SFS 2008:579), Riksdagen
3. European Commission, Merger control overview
4. EUR-Lex, Council Regulation (EC) No 139/2004 (EU Merger Regulation)
5. Sveriges Domstolar (Swedish Courts), Patent- och marknadsdomstolen
6. Sveriges advokatsamfund (Swedish Bar Association)
7. OECD, Competition