Mauritania occupies a vast territory at the meeting point of North Africa and sub-Saharan West Africa — its northern half is Saharan desert, its southern regions border the Senegal River and ECOWAS countries. Nouakchott, the capital, has grown rapidly from a small settlement at independence in 1960 to a city of over a million people driven by government administration, trade, and resource industry activity. Mauritania is an oil and gas producer (offshore Sangomar/GTA fields with BP, Kosmos Energy, and the Mauritanian state company SMHPM), a major iron ore exporter (Société Nationale Industrielle et Minière — SNIM), and a fishing nation with rich Atlantic waters. For HNW individuals with extractive industry, maritime, or development finance interests in the Sahel-Atlantic region, Mauritania's financial planning environment is worth understanding.
Political and Legal Context
Mauritania is a presidential republic; former president Mohamed Ould Ghazouani was re-elected in 2024. The country has escaped the military coup wave that has destabilised Mali, Burkina Faso, and Niger — a notable distinction. The legal system is mixed: civil law influences from French colonial administration, Islamic law (Mauritania is a predominantly Muslim country and is formally an Islamic republic), and customary law. The national currency is the Mauritanian Ouguiya (MRU), reformed in 2018 (old ouguiya UM replaced by new ouguiya MRU at 10:1).
Mauritania is a member of the Arab Maghreb Union (alongside Morocco, Algeria, Tunisia, and Libya) and the Economic Community of West African States (ECOWAS), bridging North and West African economic blocs.
Tax Residency Rules
An individual becomes tax resident in Mauritania by having their habitual residence or principal economic activity there, or by spending more than 183 days in the country. Mauritanian tax law draws on French administrative law traditions.
No DTA exists between Mauritania and the United Kingdom. British nationals must independently satisfy the UK SRT to cease UK tax residence.
Income Tax
Mauritania levies individual income tax (Impôt Général sur le Revenu — IGR) at progressive rates:
- Up to MRU 30,000 per year: 0%
- MRU 30,001–90,000: 15%
- MRU 90,001–180,000: 25%
- Above MRU 180,000: 40%
The top rate of 40% applies from approximately MRU 180,000 (roughly USD 4,500–5,000 per year), which by international standards is extremely low — meaning most internationally mobile individuals with meaningful incomes will be in the top bracket on Mauritanian-source income.
Mauritanian income tax applies to locally sourced income. Foreign-source investment income of Mauritanian residents is subject to tax; however, the limited treaty network and practical enforcement capacity mean the effective taxation of offshore income is limited in practice. Professional advice on the technical position is still essential.
Capital Gains Tax
Mauritania does not have a comprehensive standalone capital gains tax. Asset disposal gains arising in a business or professional context may be included in taxable income. Property gains are subject to registration fees and potentially land tax.
Inheritance and Estate Tax
Mauritanian inheritance follows a mixed system: the formal civil law inheritance code interacts with Islamic succession principles (sharia inheritance rules, which specify fixed shares for relatives). For international estates, the interaction between Mauritanian law and UK succession law requires specialist cross-border legal advice.
Wealth Tax
No annual wealth tax exists in Mauritania.
UK Pension Implications
No UK-Mauritania DTA or reciprocal social security agreement. The UK State Pension paid to Mauritania residents is frozen — no annual uprating applies. UK private pension income faces UK withholding at source without DTA relief. QROPS does not exist in Mauritania.
Banking Environment
Mauritania's banking sector is regulated by the Banque Centrale de Mauritanie (BCM). Key banks include Banque Nationale de Mauritanie (BNM), Société Générale Mauritanie, Attijari Mauritanie (Moroccan bank), and Banque Mauritanienne pour le Commerce International (BMCI). The banking sector is developing and has significant room for growth — many Mauritanians remain unbanked.
The MRU is not pegged to a reserve currency (unlike the CFA franc), introducing genuine exchange rate risk. The MRU has depreciated against major currencies over recent decades. HNW individuals with Mauritanian operations typically hold international balances in USD or EUR through regional banking hubs in Morocco, Senegal, or France.
Investment Climate
Mauritania's investment case centres on:
Energy: The Greater Tortue Ahmeyim (GTA) LNG project — a cross-border development with Senegal, operated by BP — is a major infrastructure investment expected to generate significant gas export revenues from the mid-2020s. Mauritania has potential for additional offshore exploration. The energy sector operates under production-sharing contracts (PSCs) with the national oil company SMHPM.
Iron ore: SNIM is one of the world's major iron ore producers; its Zouerate mine and Nouadhibou export port are key infrastructure. Mauritania produces approximately 15 million tonnes of iron ore per year.
Fisheries: Mauritanian Atlantic waters are among the richest fishing grounds in Africa; EU-Mauritania fisheries agreements generate significant revenue.
Agriculture and pastoral economy: The Senegal River valley in southern Mauritania offers irrigated agriculture potential.
Renewable energy: Mauritania has exceptional solar and wind resources (the Saharan desert and Atlantic coast); international development finance is targeting renewable energy development.
Investment risks include political risk (though lower than Sahelian neighbours), regulatory uncertainty, infrastructure deficits (roads, ports outside Nouadhibou and Nouakchott), and the small domestic consumer market.
Cost of Living Context
Nouakchott has a relatively modest cost of living for an African capital. Imported goods carry cost premiums; international school fees and private healthcare (limited in quality) are significant costs for expat families. The climate is harsh — Saharan heat and sand — which affects quality of life and requires robust air conditioning infrastructure.
Social Security
Mauritania has a Caisse Nationale de Sécurité Sociale (CNSS) for formal sector employees. There is no reciprocal agreement with the UK.
Key Compliance Issues for Expats
UK Bribery Act: Mauritania's governance environment presents elevated corruption risk. UK nationals must maintain strict anti-corruption procedures under the UK Bribery Act 2010.
Resource sector contract compliance: PSCs, mining codes, and fisheries agreements in Mauritania have been subject to renegotiation; contractual stability clauses are important for resource sector investors.
Islamic finance considerations: Mauritania's Islamic republic status means sharia-compliant finance is an active part of the market. Islamic banking products (murabaha, sukuk) are available and may be appropriate for certain investors; conventional interest-bearing products are also available.
Currency risk: Unlike CFA franc countries, Mauritania's MRU carries genuine exchange rate risk. FX management strategy is important for MRU-denominated income flows.
Practical Financial Planning Tips
Sector focus: Mauritania investment should focus on areas of genuine comparative advantage — energy, iron ore, fisheries, renewable energy — rather than consumer-facing sectors with limited domestic demand.
Manage currency risk proactively: MRU depreciation risk should be hedged or managed through USD/EUR denomination of contracts wherever possible.
Legal due diligence: Mauritanian resource contracts require careful review by specialists in African extraction law; stabilisation clauses, local content requirements, and dispute resolution mechanisms (typically ICSID arbitration) should be negotiated carefully.
Engage Islamic finance expertise: For locally sourced financing or structured products, Islamic finance products may be more appropriate or available than conventional instruments.
Regional approach: Mauritania is best considered as part of a broader North Africa/West Africa regional strategy rather than as a standalone destination. Combining Mauritania exposure with positions in Morocco, Senegal, or the Gulf provides better risk/return characteristics.
All information reflects the position as understood in 2026. The political and economic situation may change rapidly; seek current specialist advice before making any commitment. Investments can fall as well as rise.
How Global Investments Can Help
Global Investments advises internationally mobile HNW clients on African resource sector, frontier market, and cross-border investment planning. We can assist with risk-adjusted portfolio planning, UK compliance from an African base, and connections to specialist African legal and corporate advisory teams. Contact our team to discuss your Mauritania financial planning needs.
This guide is for general information only and does not constitute financial advice or a personal recommendation. The value of investments can fall as well as rise and you may get back less than you invest. Tax rules, pension legislation, and investment regulations change — always verify current rules and seek advice from a qualified independent financial adviser before making any financial decisions.