Competition law Kenya Competition Act No. 12 of 2010 establishes a comprehensive regime administered by the Competition Authority of Kenya (CAK). The Act prohibits anti-competitive agreements, abuse of dominance, and mergers that substantially lessen competition, and the dominance threshold in particular is set considerably lower, and structured more intricately, than a simple market-share majority test, a distinction that matters for any business that has assumed it is safely below the line.
Competition Law Kenya Competition Act: Key Prohibitions for Businesses
Section 21 prohibits agreements between undertakings, decisions by associations of undertakings, or concerted practices that have as their object or effect the prevention, distortion, or lessening of competition in trade, unless exempt under the Act’s own exemption provisions. Price-fixing, market sharing, bid rigging, and output limitation are treated as restrictive practices subject to the most serious enforcement consequences, including criminal liability: a contravention of Section 21 itself carries imprisonment of up to five years or a fine of up to ten million shillings, or both, in addition to any administrative penalty the CAK may separately impose. Vertical agreements, between parties at different levels of the supply chain rather than between competitors, are generally assessed under a rule-of-reason analysis and are prohibited only where they are shown to substantially lessen competition, rather than being treated as automatically unlawful in the way the most serious horizontal restrictions are.
The Intra-Group Exclusion
A point worth flagging for corporate groups: the Act’s restrictive trade practices prohibition does not apply to an agreement or practice between a company and its wholly owned subsidiary, or between undertakings other than companies that are each owned or controlled by the same person or persons. This means ordinary intra-group commercial arrangements, transfer pricing between a parent and a wholly owned subsidiary, for instance, generally fall outside Section 21’s prohibition entirely, since the parties are not in genuine competition with each other in the sense the Act is concerned with. This exclusion does not extend to a joint venture or partly owned subsidiary, where genuine independent ownership interests exist alongside the controlling shareholder; a group structure with minority co-investors at the subsidiary level should not assume the intra-group exclusion automatically covers its arrangements with that subsidiary in the same way it would for a wholly owned one.
Abuse of Dominant Position: A Lower and More Layered Threshold
Dominance is not itself prohibited under the Act; abusing it is, under Section 24. Where the dominance threshold actually sits is more layered than a single market-share figure suggests. Section 23 sets out three distinct routes to a finding of dominance. First, an undertaking that controls not less than one-half of the relevant goods or services in Kenya, or a substantial part of it, is a dominant undertaking outright. Second, and this is the threshold most often understated, an undertaking that controls at least forty per cent but not more than fifty per cent of the market share is also deemed dominant, unless it can affirmatively show that it does not have market power; this is a presumption the undertaking bears the burden of rebutting, not a safe zone. Third, an undertaking controlling less than forty per cent of the market share can still be found dominant if it is otherwise shown to have market power, meaning even a comparatively modest market share does not provide automatic protection from a dominance finding where other indicators of market power, such as barriers to entry facing rivals or the undertaking’s pricing behaviour, point that way. A business that has concluded it is safe because its market share sits below fifty per cent has not actually completed the analysis the Act requires; prohibited conduct under Section 24 includes predatory pricing, exclusive dealing arrangements designed to foreclose competition, tying, and refusal to supply on terms that harm competition, and any of these by a business in the forty-to-fifty per cent band carries real exposure unless the rebuttal of market power has actually been made out.
Merger Control: Mandatory Notification
Mergers above specified thresholds must be notified to and approved by the CAK before implementation under Section 43. Implementing a notifiable merger without CAK approval is an offence and can result in the merger being unwound after the fact, which is a materially worse outcome for the parties than the delay of seeking approval upfront would have been. The CAK reviews a notified merger for its likely effects on competition and can approve it unconditionally, approve it subject to behavioural or structural remedies, or prohibit it outright; a transaction structured on the assumption that CAK approval is a formality should instead treat the review timeline and the possibility of conditions as a genuine part of deal planning, particularly in sectors where the CAK has been actively enforcing.
Penalties and Enforcement
The CAK can impose financial penalties of up to ten per cent of the preceding year’s gross annual turnover in Kenya of the undertaking in question, a figure confirmed across the Act’s separate penalty provisions for restrictive trade practices, abuse of dominance, and merger contraventions alike. Beyond financial penalties, the CAK can issue cease and desist orders, require structural remedies including divestiture, and refer matters for criminal prosecution where the conduct also constitutes an offence under the Act. The CAK has been increasingly active in enforcement across the retail, financial services, and agricultural sectors in recent years, and a business operating with meaningful market share in any of these sectors should treat CAK scrutiny as an active risk rather than a theoretical one.
Compliance Programmes
A documented compliance programme can mitigate the risk of violations occurring in the first place and can demonstrate good faith if the CAK does investigate. Effective programmes include competition law training for staff who negotiate pricing, supply, or distribution arrangements, a clear internal policy on prohibited conduct written in terms staff can actually apply day to day, procedures for legal review of agreements before execution rather than after a counterparty has already signed, and a whistleblowing mechanism that gives employees a route to flag a concern internally before it becomes an external complaint to the CAK. A business that holds a market share anywhere near the forty per cent threshold should treat its compliance programme as addressing live dominance risk specifically, not only the more general restrictive-agreement risk that applies regardless of market share, and should revisit that assessment whenever market share shifts materially rather than treating an initial assessment as permanent.
Competition law Kenya Competition Act enforcement has intensified in recent years, and businesses that engage in mergers, acquisitions, or distribution arrangements without prior legal review face significant exposure to remedies including structural divestiture and civil damages.Clay & Associates Advocates advises businesses on competition law compliance, dominance threshold assessments under Section 23, the intra-group exclusion for corporate structures, merger notification, and responding to CAK investigations. If your business needs an honest assessment of where it actually sits against the dominance threshold, or needs a merger reviewed for notification obligations before signing, we can help you work through the analysis before the CAK does it for you.
Need advice on competition law compliance? Contact Clay & Associates Advocates. Book a Consultation
Related reading: Insurance Law and Regulation in Kenya
For tailored legal advice on this matter, speak with our regulatory and compliance advisory services team at Clay & Associates Advocates. We advise businesses and individuals across Kenya on Regulatory and Compliance Advisory matters from our offices at Nextgen Mall, Nairobi.






