Tax Optimization in Mauritius

Tax optimization in Mauritius: legality and compliance

Tax optimization (tax planning) consists of using the legal provisions in force to legally minimize the tax burden of a business or investor. Mauritius offers a particularly favourable framework for this approach, thanks to the combination of several tax pillars:

It is essential to distinguish tax optimization, which is entirely legal, from tax evasion, which is a criminal offence. All the strategies presented in this guide are based on mechanisms provided for by the Income Tax Act, the Partial Exemption System and Mauritius's international tax treaties.

Strategy 1: the intermediate holding company

Using a Mauritian Global Business Company as an intermediate holding company is the most widespread and proven optimization strategy. It allows shareholdings in foreign subsidiaries to be centralized and financial flows within an international group to be optimized.

How the holding structure works

The investor (individual or parent company) holds a GBC in Mauritius, which in turn holds shareholdings in operating companies in various countries. Financial flows pass through Mauritius, benefiting from DTAs and the Partial Exemption System:

Case study: holding company for investments in Africa

A French investor wishes to hold shareholdings in companies in Kenya, South Africa and Madagascar:

Conditions for a successful holding structure

• Economic substance: the holding company must have an operational reality in Mauritius (resident directors, premises, qualified investment management staff)
• Commercial purpose: the structure must have a commercial logic beyond the mere tax advantage (centralized investment management, access to African markets, etc.)
• Effective management in Mauritius: investment and divestment decisions must be made and documented in Mauritius
• Tax Residence Certificate: essential to invoke DTAs, renewed annually
• Robust documentation: board minutes, investment analyses, business correspondence conducted from Mauritius

Strategy 2: international trading company

Mauritius is a strategic location for international trading companies (commodity trading, trade in goods, commercial intermediation). The effective rate of 3% on profits from exported services and international trading makes the jurisdiction particularly competitive.

How international trading works

The Mauritian GBC buys goods or services from suppliers in country A and resells them to customers in country B. The trading margin is taxed in Mauritius at the effective rate of 3%. To benefit from the partial exemption, the following must apply:

• The trading activity must be effectively managed from Mauritius (purchase/sale decisions made locally)
• Contracts must be negotiated and signed in Mauritius
• The company must have competent staff for the trading activity
• Financial flows must pass through Mauritian bank accounts
• The company must bear the actual commercial risks of the activity (credit risk, market risk)

Promising sectors for trading via Mauritius

Strategy 3: intellectual property (IP) management

Domiciling intellectual property (patents, trademarks, software, copyright) in Mauritius allows licence and royalty income to be centralized in a low-tax jurisdiction.

Typical IP management scheme

1. Acquisition or development of the IP

   The Mauritian GBC acquires or develops the intellectual property. Development must involve real resources in Mauritius (engineers, developers, IP lawyers).

2. Granting of licences

   The GBC grants exploitation licences to the group's operating companies in various countries, in exchange for the payment of royalties.

3. Deduction of royalties

   The operating companies deduct the royalties paid from their local taxable profit, reducing their tax burden in high-tax countries.

4. Taxation in Mauritius

   Royalties received in Mauritius benefit from the 80% partial exemption (effective rate of 3%). DTAs reduce withholding taxes (often 0% with many countries).

Critical points to watch for IP

• Transfer pricing: royalties must be set on an arm's length basis. Robust transfer pricing documentation is essential, including a comparability analysis and a functional study
• DEMPE rules (OECD): IP remuneration must correspond to the Development, Enhancement, Maintenance, Protection and Exploitation functions actually carried out in Mauritius
• Specialized substance: the GBC must have the human and technical means to manage the IP (engineers, lawyers, documented development processes)
• Beneficial ownership: the IP must be genuinely owned, managed and controlled by the GBC, not simply registered in its name

Strategy 4: structuring of investment funds

Mauritius has become a leading jurisdiction for domiciling investment funds, particularly those targeting Africa and Asia. The Financial Services Commission (FSC) offers an internationally recognized regulatory framework.

Fund structures available in Mauritius

• Expert Fund: for qualified investors (minimum USD 100,000), accelerated approval procedure
• Professional Collective Investment Scheme (CIS): for professional investors, comprehensive regulatory framework
• Specialised CIS: for investments in specific asset classes (real estate, infrastructure, private equity)
• Closed-End Fund: for private equity and venture capital targeting Africa
• Protected Cell Company (PCC): cell-based fund allowing investments to be compartmentalized

Other complementary vehicles, such as Mauritian trusts, Mauritian foundations and investment funds, offer additional wealth structuring solutions.

Strategy 5: intra-group financing (Treasury Center)

Setting up a financing company (Treasury Center) in Mauritius allows financial flows within a multinational group to be optimized:

• Centralization of treasury: the GBC borrows on international markets or receives deposits from group entities, and lends to operating subsidiaries
• Financial margin taxed at 3%: the spread between the cost of financing and the rate on intra-group loans is taxed at the effective rate of 3% (partial exemption)
• Reduction of WHT on interest: DTAs reduce withholding tax on interest paid by foreign subsidiaries to the Mauritian treasury center

Points to watch for intra-group financing

• Thin capitalization: the debt-to-equity ratio is capped at 3:1 for GBCs. Beyond this, excess interest is not deductible
• Arm's length: intra-group interest rates must reflect market conditions (benchmarking analysis required)
• Substance: the financing company must have qualified staff for financial management and credit decision-making
• Real financial flows: funds must pass through the treasury center's Mauritian bank accounts

Strategy 6: relocation of the entrepreneur

For individual entrepreneurs and directors, personal relocation to Mauritius constitutes a particularly effective overall optimization strategy:

Conditions for relocation

• Effectively transfer residence: presence of 183+ days per year in Mauritius
• Obtain a residence permit: Occupation Permit (OP), Premium Visa, or real estate investment in an IRS/PDS scheme (minimum USD 375,000)
• Break tax ties with the country of origin: sale of the main residence, change of administrative address, closure or transfer of accounts
• Comply with exit obligations: exit tax in France (deferred payment subject to conditions), departure declarations, notification to the tax authorities

Safeguards: compliance and anti-abuse

Any optimization strategy must take into account the increasingly strict anti-abuse rules at the international level:

OECD BEPS rules

• Action 5 (Harmful tax practices): Mauritius has aligned its Partial Exemption System with BEPS standards, with substance requirements
• Action 6 (Treaty shopping): Mauritian DTAs incorporate the PPT (Principal Purpose Test) via the MLI, limiting the abusive use of treaties
• Action 7 (Permanent establishment): broadened definition of PE to cover artificial arrangements aimed at avoiding qualification
• Actions 8-10 (Transfer pricing): intra-group transactions must comply with the arm's length principle, with mandatory documentation
• Action 13 (CbCR): Country-by-Country Reporting mandatory for groups with consolidated revenue exceeding EUR 750M

CFC (Controlled Foreign Company) rules

Many countries (France, United Kingdom, Germany, Italy) have CFC rules that allow the profits of a controlled foreign subsidiary in a low-tax country to be taxed in the shareholder's country of residence. To withstand the application of these rules, the Mauritian GBC must demonstrate:

• Real economic activity in Mauritius (not a mere letterbox company)
• Substance proportional to declared income (staff, premises, expenses, decisions)
• A genuine commercial purpose beyond the mere tax advantage (access to African markets, centralized management, etc.)

Essential documentation

To secure any optimization strategy, rigorous documentation is essential:

• Minutes of board meetings held in Mauritius (with evidence of directors' physical presence)
• Commercial contracts negotiated and signed in Mauritius
• Transfer pricing documentation (Master File, Local File, comparability analysis)
• Evidence of substance (leases, payslips, invoices from local providers, bank statements)
• Tax opinions from qualified professionals validating the structure
• Tax Residence Certificates renewed annually

Common mistakes to avoid

Recommended methodology

To implement a robust and sustainable tax optimization strategy via Mauritius:

1. Analysis of the current situation

   Map existing flows, identify sources of over-taxation, analyse the CFC and anti-abuse rules applicable in the country of origin.

2. Definition of objectives

   Assess the potential tax treatment in light of the tax residence of owners and directors and the anti-abuse rules of the country of origin (in France, articles 209 B and 123 bis of the CGI), determine the level of substance required in Mauritius and the compliance budget.

3. Structure design

   Choose the type of company (GBC, Authorised Company), the tax regime, the applicable treaties and the articulation with existing entities.

4. Legal and tax validation

   Obtain a tax opinion from qualified professionals, validating the compliance of the structure in all jurisdictions concerned.

5. Operational implementation

   Incorporation of the GBC, obtaining the FSC licence, setting up substance (premises, staff, bank accounts).

6. Ongoing monitoring and compliance

   Tax filings, renewal of the TRC, transfer pricing documentation, updating of the structure in line with regulatory developments.