By Megan Armstrong and Amy Shellard
On 5 June 2025, Primerio hosted the latest instalment of its African Antitrust Agencies – in Conversation series. This session featured Primerio’s Managing Associate, Joshua Eveleigh, alongside Carole Bamu, Primerio’s in-country lead partner for Zimbabwe, and Calistar Dzenga, Head of Mergers at the Zimbabwe Competition and Tariff Commission (“CTC”). Their wide-ranging conversation offered a rare window into Zimbabwe’s merger control regime, recent enforcement developments, and anticipated legislative reforms, thus providing valuable insight into how the regulator is intensifying oversight and sharpening enforcement.
Calistar Dzenga explained that any transaction meeting the combined turnover or asset threshold of USD 1.2 million in Zimbabwe is notifiable under the Competition Act [Chapter 14:28]. Notably, this includes foreign-to-foreign mergers, the activities of which have an appreciable effect within Zimbabwe’s market, a critical point as Zimbabwe becomes an increasingly active jurisdiction in African dealmaking. The CTC’s review process starts with notification and payment of fees capped at USD 40,000, followed by detailed engagement including market research and stakeholder consultations.
Mergers are classified as either “small” or “big,” with smaller transactions typically decided within 30 days, while larger or complex deals taking up to 90 to 120 days.
While the CTC uses indicators like the Herfindahl-Hirschman Index (HHI) as screening tools, the CTC confirmed that market shares are not determinative on whether a transaction will have anticompetitive effects. Instead, the CTC focuses on, and considers, barriers to entry, countervailing buyer power, and the historical context of collusion. Zimbabwe’s framework embeds public interest considerations within competition analysis, differing from South Africa’s dual-stream approach.
Public interest concerns, particularly employment protection and local industry support, are increasingly central to merger decisions. These conditions often require maintaining junior-level employment for at least 24 months post-merger and increasing local procurement. Industrial development goals also shape decisions, including mandates for mineral beneficiation in sectors such as lithium processing.
One of the most significant recent cases involved CBZ Holdings’ attempt to acquire a controlling stake in ZB Financial Holdings. The proposed merger raised alarms over market concentration in banking, reinsurance, and property, as well as risks to consumer choice. After extensive engagement, the Commission proposed strict conditions, from divestitures in related markets to commitments to maintain separate brands. Ultimately, the merging parties walked away, demonstrating that Zimbabwe’s regulator has the resolve to stand firm even on high-profile deals.
Joshua and Carole explored how Zimbabwe’s CTC collaborates with other African authorities. Calistar highlighted the strong relationships the CTC has with theCOMESA Competition Commission, the South African Competition Commission, as well as the relevant competition authorities in Zambia and Botswana. Such cross-border collaboration plays a crucial role in ensuring that mergers do not slip through regulatory gaps and that decisions are coordinated across the region. The CTC also uses memoranda of understanding with other national regulators, such as the Zimbabwe Stock Exchange and the Reserve Bank, to detect transactions which have not been notified to the CTC.
A major theme of the conversation was the long-awaited Competition Amendment Bill, which is set to overhaul Zimbabwe’s 1996 Act. As Calistar explained, the Amendment Bill will:
(i) give the CTC powers to impose harsher administrative penalties for restrictive practices and cartels;
(ii) introduce clearer rules on public interest considerations;
(iii) allow the CTC to conduct proactive market inquiries rather than just reactive investigations;
(iv) enable anticipatory decisions for failing firms to speed up urgent cases; and
(v) provide leniency frameworks for companies disclosing collusion.
The reforms are expected to give the CTC more enforcement capability and help align Zimbabwe with international practices. Joshua mentioned that these changes would give the CTC “more teeth to bite,” a phrase Calistar repeated, showing how the regulator wants to align with global standards.
Right now, Zimbabwe is seeing more merger activity, especially in the financial services and manufacturing sectors. This is predominantly due to consolidation pressures, along with large infrastructure projects. With regulatory scrutiny picking up speed, companies really have to stay on the front foot when it comes to managing clearance risks and be ready for stricter enforcement.
Joshua also pointed out that it’s an exciting period for competition law in Zimbabwe. He believes businesses should start preparing now for the significant changes that are on the horizon. For Primerio’s African antitrust team, this conversation really highlights how important it is to guide clients through an evolving and complex enforcement landscape.
To view the recording of this session, please see the link here.




According to its own statements, whilst only five member countries (Burundi, Rwanda, Kenya, Uganda and Zimbabwe) have fully modelled their national seed laws on the COMESA Seed System, the group’s Seed Certification system is the first such “use and distribution of seed labels and certificates as a way of improving access to quality seeds in the region” anywhere in the world, based on a model suggested by the OECD. The system will “impact virtually all of the approximately 130 million COMESA inhabitants, who stand to benefit, according to the group, from assured-quality improved seed production and usage, as well as a de-fragmentation of the historically rather localised, national markets for seeds,” commented Stargard.
the Confederation of African Football (CAF) to the Egyptian Economic Court for competition-law violations relating to certain exclusive marketing & broadcasting rights. In addition, it has been reported that the
Nigeria
from U.S. and EU models, which usually do not afford amnesty to the lead perpetrators of hard-core antitrust violations, the CCM will also grant temporary immunity (during the half-year period from March 1 until the end of August 2017) not only to repentant participants but also to lead initiators of cartels, under the country’s Leniency Programme.
Finally, COMESA will grow from 19 to 20 member states, welcoming Tunisia at the upcoming October 2017 summit: the