A founding member of OHADA, whose training school (ERSUMA) is based in Porto-Novo, Benin combines civil-law national legislation, uniform OHADA law and the community law of WAEMU and ECOWAS. This page sets out how they fit together, and which prevails in case of conflict.
Select an organization to see its members, or display overlaps with Benin. The map challenge offers six legal geography questions. The map is in French.
Porto-Novo (official), Cotonou (seat of government)
Official language
French
Legal tradition
Civil law (codified law)
Constitution
11 December 1990 (amended in 2019)
Business law
OHADA, founding member; seat of ERSUMA
Highest courts
Constitutional Court, Supreme Court, Court of Auditors
Currency
CFA franc (XOF), issued by the BCEAO
Regional organizations
7, including the AU and AfCFTA
Benin at the crossroads of regional organizations
A member of seven organizations, Benin is subject to complementary legal regimes: uniform business law (OHADA), economic and monetary union (WAEMU), regional integration (ECOWAS), cooperation with its neighbours (Council of the Entente) and shared management of the Niger River (NBA).
OHADA
founding member (1993)
Organization for the Harmonization of Business Law in Africa
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Seat
Yaoundé (Permanent Secretariat) · 17 Member states
Regulatory approach
Uniform Acts directly applicable without transposition: companies, securities, debt recovery, insolvency, arbitration, general commercial law.
Effect in Beninese law
Supranationality: Uniform Acts apply notwithstanding any conflicting provision of domestic law, whether earlier or later (Treaty, art. 10).
Court
CCJA (Abidjan): court of cassation for the application of Uniform Acts, in place of the Supreme Court of Benin. ERSUMA, the OHADA training school, is based in Porto-Novo.
Legal data stakes
Foundation of the LegOmnia database under construction: CCJA case law and Beninese decisions applying the Uniform Acts.
WAEMU
founding member (1994)
West African Economic and Monetary Union
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Seat
Ouagadougou · 8 Member states
Regulatory approach
Directly applicable regulations and directives to be transposed; common competition policy; CFA franc issued by the BCEAO.
Effect in Beninese law
Primacy of community law: regulations apply without any national transposition measure.
Court
WAEMU Court of Justice (Ouagadougou).
Legal data stakes
Regulations, directives and Commission decisions, notably on competition, taxation and banking law.
ECOWAS
founding member (1975)
Economic Community of West African States
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Seat
Abuja · 12 Member states
Regulatory approach
Revised Treaty, protocols (free movement, trade) and supplementary acts adopted by the community bodies.
Effect in Beninese law
Ratified treaties and protocols prevail over statutes (Constitution, art. 147), subject to reciprocity.
Court
ECOWAS Court of Justice (Abuja), directly accessible to individuals in human rights matters.
Legal data stakes
Case law of the ECOWAS Court, notably on human rights, and free movement texts.
AU
founding member of the OAU (1963)
African Union
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Seat
Addis Ababa · 55 Member states
Regulatory approach
Constitutive Act and continental conventions (human rights, cybersecurity, data protection), applicable after signature and ratification.
Effect in Beninese law
Ratified and published conventions prevail over statutes (Constitution, art. 147), subject to reciprocity.
Court
African Court on Human and Peoples' Rights (Arusha), within the limits of the ratified protocols.
Legal data stakes
Reference for continental standards, notably on personal data protection.
AfCFTA
State party to the Agreement
African Continental Free Trade Area
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Seat
Accra (Secretariat) · 54 Member states
Regulatory approach
Framework agreement and protocols: goods, services, investment, competition, intellectual property, digital trade.
Effect in Beninese law
In case of conflict with a regional agreement, the Agreement prevails, except between states that have achieved deeper integration (art. 19), as within WAEMU.
Court
State-to-state dispute settlement mechanism modelled on the WTO.
Legal data stakes
Monitoring of trade commitments and national implementing texts.
Entente
founding member (1959)
Council of the Entente
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Seat
Abidjan · 5 Member states
Regulatory approach
The oldest regional organization in West Africa: development and security cooperation between five states.
Effect in Beninese law
Cooperation agreements subject to the general treaty regime (art. 147).
Court
No community court.
Legal data stakes
A limited corpus, but useful for cooperation projects between neighbouring states.
NBA
member state
Niger Basin Authority
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Seat
Niamey · 9 Member states
Regulatory approach
Joint management of the Niger River basin between nine states: water resources, infrastructure, environment.
Effect in Beninese law
Conventions subject to the general treaty regime (art. 147).
Court
No community court.
Legal data stakes
Basin water charter and texts on the management of shared resources.
Common pitfalls: Benin is not a member
CEMAC : Economic and monetary union of six Central African states. It also uses a CFA franc, but one issued by the BEAC: Benin belongs to WAEMU and the BCEAO.
WAMZ : West African Monetary Zone, bringing together six ECOWAS states outside the CFA franc, including neighbouring Nigeria. Benin is not a member.
MRU : Mano River Union, a cooperation organization of Liberia, Sierra Leone, Guinea and Côte d'Ivoire. Benin is not a member.
OHADA and WAEMU: how they fit together
The eight WAEMU member states, including Benin, also belong to OHADA. Two bodies of community law therefore apply there at the same time, with distinct scopes but points of contact.
Complementarity
OHADA focuses strictly on legal certainty for business and commercial law, while WAEMU has a broader remit: monetary policy, customs union, financial markets, taxation.
Coexistence and conflicts of norms
In the eight countries belonging to both organizations, collisions can arise between OHADA Uniform Acts and WAEMU regulations or directives, for example in accounting or financial law.
A permanent consultation framework
To avoid conflicts of competence and harmonise their action, a Permanent Consultation Framework has been set up between OHADA and the WAEMU institutions.
The Beninese legal order has five levels. OHADA law and WAEMU law hold a special place: directly applicable, they prevail even over a later statute.
Level 1 · supreme norm
Constitution
The Constitution of 11 December 1990, amended in 2019, sits at the top of the legal order. An international commitment containing a conflicting clause can only be ratified after the Constitution has been amended.
OHADA Uniform Acts and WAEMU regulations are directly applicable and prevail over any conflicting provision of domestic law, whether earlier or later. WAEMU directives, by contrast, must be transposed.
What about case law? It does not appear in the pyramid, but it shows how each level applies in practice. That is precisely the body of law LegOmnia is working to structure and make accessible.
Test your knowledge
Two interactive exercises: resolve real conflicts between norms, then check what you know about Benin's regional integration.
The norms referee
Score : 0
Case 1/6
An ordinary statute encroaches on a matter the Constitution reserves for an organic law.
Which norm or court prevails?
Quiz: regional integration
Score : 0
Question 1/15
Where is the OHADA Permanent Secretariat based?
Frequently asked questions about Beninese law
Is Benin a member of CEMAC?
No. Benin is a member of WAEMU (West African Economic and Monetary Union), whose CFA franc is issued by the BCEAO. CEMAC brings together six Central African states, whose CFA franc is issued by a different central bank, the BEAC.
Does OHADA law apply in Benin?
Yes. Benin is a founding member of OHADA and hosts its Regional Higher School of Magistracy (ERSUMA) in Porto-Novo. The Uniform Acts are directly applicable there without transposition, notwithstanding any conflicting provision of domestic law, whether earlier or later (OHADA Treaty, art. 10).
Which court rules in cassation on OHADA law?
The Common Court of Justice and Arbitration (CCJA), based in Abidjan. It rules in cassation on the application of the Uniform Acts, in place of the Supreme Court of Benin (Treaty, art. 14), and its judgments are enforceable in all member states (art. 20).
What is the status of international treaties in Beninese law?
Under article 147 of the Constitution of 11 December 1990, duly ratified treaties prevail over statutes once published, provided the other party applies them. A commitment contrary to the Constitution can only be ratified after the Constitution has been amended (art. 146).
Which regional organizations does Benin belong to?
Benin is a member of seven organizations: the African Union, the AfCFTA, OHADA, ECOWAS, WAEMU, the Council of the Entente and the Niger Basin Authority. It is not a member of CEMAC, the WAMZ or the Mano River Union.
Where does LegOmnia stand on Beninese law?
This is one of our priority jurisdictions and its integration is under way. We are building coverage step by step: OHADA law, shared by the 17 member states, is the foundation, progressively enriched with texts and case law specific to Beninese law. People on the waitlist will be the first to hear about each new milestone. OmniScan can already be deployed there today to digitise and index legal document collections.
Beninese law, soon at your fingertips
Join the waitlist to be among the first to access LegOmnia legal research on Benin and the OHADA area.
Educational summary; it does not constitute legal advice. References: Constitution of 11 December 1990 (arts. 146 and 147), OHADA Treaty (arts. 10, 14, 20), WAEMU Treaty, AfCFTA Agreement (art. 19). Memberships as of October 2026.
Jurisdiction · West Africa