MU-G-02: Mauritius as an Offshore Financial Centre: The IBC Architecture, DTAA Network, and FATF Pressures (1992–2024)

1. Key Takeaways

• The 1992 founding legislation created a purpose-built offshore architecture that positioned Mauritius as a conduit jurisdiction at the intersection of the Indian Ocean's two largest economies. The Offshore Business Activities Act (1992) introduced a two-tier corporate structure — Category 1 and Category 2 Global Business Companies — designed explicitly to attract foreign capital seeking a low-tax, treaty-sheltered domicile. The architecture worked because Mauritius combined four assets that few jurisdictions could match simultaneously: a functioning common-law judiciary inherited from the colonial era, political stability grounded in credible multi-party elections, a pre-existing tax treaty with India that was repurposed as a capital-gains exemption vehicle, and an English/French bilingual legal and professional class capable of servicing sophisticated international transactions.

• The India-Mauritius DTAA of 1983 became the most consequential instrument in the corpus once India liberalised its capital account in the early 1990s. The treaty's "residence-based" capital gains provision meant that an investor incorporated in Mauritius owed no capital gains tax to India on the sale of Indian shares — instead paying a nominal rate in Mauritius, which in practice was negligible for GBC1 structures. By the mid-2000s, Mauritius accounted for approximately 40–45% of total cumulative foreign direct investment into India (TBD-VERIFY, based on DPIIT data), and a substantial but unquantified share of Foreign Institutional Investor equity flows transited Mauritius accounts. The Reserve Bank of India repeatedly flagged "round-tripping" — domestic Indian capital being exported to Mauritius and re-imported as "foreign" investment to claim treaty benefits — as a systemic concern without being able to quantify its true scale.

• The GBC1/GBC2 bifurcation embedded a deliberate regulatory gradient within the Mauritius system. GBC1 companies were substantive tax residents — required to hold board meetings in Mauritius, maintain local bank accounts, and satisfy the Financial Services Commission's "central management and control" test — and in return received access to the full DTAA network. GBC2 companies were explicitly non-resident for treaty purposes, used for pure offshore holding without the India-routing advantage. This two-tier design allowed Mauritius to project a veneer of substance requirements while the practical bar for GBC1 residence certification remained low by OECD standards: nominee directors, minimal local expenditure, and an annual certificate from the FSC. Critics from the Tax Justice Network and OECD argued that the substance requirements were insufficient; Mauritius authorities argued they met international norms of the time.

• The 2016 India-Mauritius DTAA renegotiation was the most disruptive single event in the sector's history since the founding legislation. Signed on 10 May 2016, the revised protocol phased out the capital gains exemption: shares acquired before 1 April 2017 were grandfathered; a transitional 50% rate applied for financial years 2017–2019; full source-country (Indian) taxation applied from April 2019. The revision was the culmination of years of Indian pressure, accelerated by the OECD's BEPS Action 6 framework and India's broader effort to tighten treaty shopping. The immediate consequence was a measurable contraction in new GBC1 incorporations targeting the India market, a decline in AUM managed from Mauritius, and an accelerated pivot toward Africa-focused mandates.

• The African pivot (2016–2023) was partly successful but generated its own legitimacy tensions. Mauritius rebranded as the premier gateway for African investment: SADC and COMESA membership, bilateral investment treaties and DTAAs with upward of 22 African jurisdictions, geographical proximity, and a legal system intelligible to both Anglophone and Francophone investors. Africa-focused private equity (Actis, Development Partners International, and a range of development finance institution vehicles) increasingly used Mauritius GBC structures. But the same critique that African civil society levelled at the India DTAA — that Mauritius enables profit-stripping from productive source-country economies to a low-tax conduit — intensified. The African Tax Administration Forum and Oxfam published analyses suggesting that Mauritius treaty networks cost African states hundreds of millions of dollars annually in withheld dividend and interest tax revenues (TBD-VERIFY).

• The FATF grey-listing of October 2020 (publicly confirmed February 2021) was an existential regulatory shock. The Financial Action Task Force's Mutual Evaluation had found Mauritius deficient across multiple AML/CFT dimensions: weak supervision of Designated Non-Financial Businesses and Professions, insufficient scrutiny of Politically Exposed Persons, inadequate beneficial ownership registers accessible to law enforcement, and an NPO sector with poor anti-terrorist-financing oversight. The European Union's consequential blacklisting as a High-Risk Third Country created immediate operational costs: correspondent banking relationships deteriorated, European insurers increased coverage premiums, and some fund managers re-domiciled vehicles to Luxembourg or Ireland. The grey-listing exposed the systemic risk that the entire offshore sector's viability rested on regulatory reputation that had been allowed to erode.

• The reform programme undertaken by the Jugnauth government (2021–2023) was rapid and, by FATF's own assessment, comprehensive. The Financial Intelligence Unit was restructured and staffed; the FSC increased inspection frequencies for GBCs, trust companies, and management companies; the Beneficial Ownership register was extended to cover real estate and DNFBPs; prosecutorial cooperation with international partners deepened. FATF removed Mauritius from its Increased Monitoring list in June 2023 — one of the more rapid exits from the grey list recorded in recent FATF history. The EU's removal of Mauritius from its high-risk list followed. The episode demonstrated both the fragility of reputation-dependent offshore centres and the capacity of a small, administratively nimble state to execute concentrated reform when politically motivated.

• The OECD Pillar 2 global minimum tax (15% effective rate, agreed October 2021) poses the most structurally significant long-run threat to the Mauritius IBC model. Where BEPS Action 6 targeted specific treaty abuses, Pillar 2 introduces a global floor that eliminates the rate differential that made Mauritius IBCs attractive for income-generating rather than purely holding structures. Mauritius's response — transitioning toward a substance-based International Financial Centre that competes on professional services, speed of incorporation, and gateway positioning rather than on raw tax arbitrage — mirrors the strategic adaptation undertaken by Cayman, Jersey, and other established centres in earlier OECD pressure cycles. Whether this transition is sufficient to sustain a sector employing roughly 12,000 people and contributing 10–12% of GDP (TBD-VERIFY) is the central economic governance question facing the post-2024 Alliance du Changement government.

• Round-tripping — the re-importation of domestically generated capital as "foreign" investment — was the sector's most corrosive, and least quantifiable, legitimacy problem. Indian regulatory authorities, academic economists, and international financial institutions produced a range of estimates suggesting that between 10% and 40% of "Mauritius FDI" into India was in fact Indian-origin capital completing a round trip. The impossibility of precise quantification — because beneficial ownership chains were deliberately opaque — made the problem simultaneously serious and resistant to definitive regulatory remedy. The 2016 DTAA revision addressed the symptom (CGT avoidance) without resolving the underlying opacity. Beneficial ownership reform under FATF pressure addressed the opacity mechanism, but by then the primary vehicle (GBC1 India routing) had already been structurally wound down by treaty revision.

• The Mauritius IBC sector is best understood as a governance experiment in small-state comparative advantage under evolving international norms. Unlike extractive offshore centres that offered pure secrecy (Panama, British Virgin Islands), Mauritius positioned itself in the middle ground: functional regulators, credible courts, genuine treaty network, some substance requirements — sufficient to satisfy investor legal counsel but not sufficient to meet the evolving OECD/FATF standard of genuine economic substance. The sector's history is a case study in how international norm-setting (BEPS, FATF, EU AMLD) progressively closed the space that middle-ground conduit jurisdictions occupied, forcing them either upmarket (genuine financial centre with deep professional services) or into irrelevance.

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2. The Founding Architecture: Offshore Business Activities Act 1992 and the GBC System

Mauritius's entry into offshore financial services was a deliberate state strategy, not an organic market development. The government of Sir Anerood Jugnauth's first administration (1982–1995) recognised that the island's post-independence economic model — sugar monoculture supplemented by export processing zone textiles — was structurally limited. The Export Processing Zone boom of the 1970s and 1980s had produced full employment and manufacturing diversification but was vulnerable to the elimination of preferential trade agreements (particularly the Multi-Fibre Arrangement, which would eventually expire in 2005) and to wage competition from lower-cost Asian producers.

The Offshore Business Activities Act of 1992 established the legal framework for what the government called the "third pillar" of diversification, alongside tourism (the second pillar). The legislation created two categories of offshore corporate structure. Category 1 Global Business Companies (GBC1) were designed as fully tax-resident entities: they were required to have at least two Mauritius-resident directors, maintain a Mauritius bank account, hold at least one board meeting per year in Mauritius, and obtain a "Global Business Licence" from what was then the Mauritius Offshore Business Activities Authority (MOBAA, later reconstituted as the Financial Services Commission in 2001 under the Financial Services Development Act). GBC1 companies paid a nominal tax rate — in practice, a 15% nominal rate reduced to an effective 3% through a deemed foreign tax credit mechanism — and, critically, were entitled to access Mauritius's treaty network including the pivotal India DTAA.

Category 2 Global Business Companies (GBC2) were structurally simpler: non-resident for tax purposes, exempt from local tax entirely, prohibited from accessing DTAAs, and used primarily for pure offshore holding structures, intra-group financing, or jurisdictions where tax treaties were irrelevant. GBC2 companies required no resident directors and minimal local substance. They were the nearest Mauritius came to the classic "brass plate" offshore company; their incorporation volume was high, their economic substance minimal, and their regulatory footprint negligible until FATF pressure eventually contributed to their abolition in 2022 (replaced by Authorised Companies, which retain non-resident status but require enhanced compliance).

The FSC, formally constituted by the Financial Services Act 2007 (the principal successor statute to the 1992 Act), became the primary licensing and supervisory body for GBCs, collective investment schemes, insurance, and securities intermediaries. The Bank of Mauritius retained jurisdiction over banking entities, including banks holding Global Business banking licences. This bifurcated supervisory architecture — FSC for GBCs and fund structures, Bank of Mauritius for banks — created a coordination challenge that FATF's 2018 Mutual Evaluation would later identify as a weakness.

By 2001, MOBAA had processed thousands of GBC applications and Mauritius was established as a significant conduit jurisdiction. The Stock Exchange of Mauritius (SEM, founded 1989) provided an additional infrastructure layer: Mauritius-incorporated vehicles could dual-list on the SEM and on Indian exchanges, providing pricing benchmarks and some degree of market discipline that pure private structures lacked. The Development and Enterprise Market (DEM) within the SEM became a venue for smaller African-focused listings. The SEM's existence gave Mauritius a visible securities infrastructure that could be cited in regulatory discussions to distinguish it from purely secretive offshore jurisdictions.

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3. The India-Mauritius DTAA: Anatomy of a Capital-Gains Exemption

The Double Tax Avoidance Agreement between India and Mauritius was signed on 24 August 1983 and entered into force the same year. Its origins predate the Mauritius offshore sector — it was a conventional tax treaty between two Commonwealth states, primarily intended to prevent double taxation of individuals working across both countries and of ordinary commercial businesses. The capital account liberalisation provisions that would make the treaty commercially explosive were not anticipated in 1983 because India's equity markets were still closed to foreign institutional investors.

The critical provision was Article 13, covering capital gains. Under Article 13 of the original treaty, gains from the alienation of shares in a company could only be taxed in the country of residence of the person making the gain. For a Mauritius-incorporated GBC1 holding Indian shares, the country of residence was Mauritius. Mauritius did not tax capital gains. The effective rate on gains from selling Indian shares held through a Mauritius GBC1 was therefore zero.

This mattered from the early 1990s, when India liberalised its capital account under the 1991 structural adjustment programme and permitted registered Foreign Institutional Investors (FIIs) to purchase Indian equity. A foreign fund or investor wishing to enter Indian equity markets could structure its investment vehicle as a Mauritius GBC1: incorporate the vehicle, obtain an FSC Global Business Licence, secure a Tax Residency Certificate (TRC) from the Mauritius Revenue Authority, and register the Mauritius vehicle as an FII with the Securities and Exchange Board of India (SEBI). On exit from Indian positions, capital gains would be assessed as Mauritius-resident and therefore untaxed.

The Reserve Bank of India's annual reports on foreign investment flows documented the growing predominance of the Mauritius route. By the mid-2000s, Mauritius accounted for a plurality of cumulative FDI into India — figures published by the Department for Promotion of Industry and Internal Trade (DPIIT, formerly DIPP) consistently showed Mauritius as the single largest source of FDI, accounting for approximately 34–37% of cumulative inflows from April 2000 to 2015 (TBD-VERIFY, DPIIT data). Among FII equity flows specifically, the Mauritius share varied year-to-year but was consistently significant, estimated by market participants at 30–45% of total registered FII assets at peak (TBD-VERIFY).

The "round-tripping" concern was the persistent shadow over these numbers. Round-tripping refers to domestic capital — Indian-origin money — that was exported to Mauritius through legal or quasi-legal means (typically as a foreign holding structure owned by Indian residents through a Mauritius intermediary), incorporated into a GBC1, and then "invested" into Indian equities or businesses as ostensibly foreign capital. On exit, the zero-CGT treaty benefit applied. The promoter recovered capital plus gains without Indian CGT liability.

The Indian Revenue Service, academic researchers including economists at the National Institute of Public Finance and Policy (NIPFP), and international observers including the IMF flagged round-tripping as a material concern. The definitional difficulty was irresolvable: Mauritius's beneficial ownership registers prior to 2021 did not require disclosure of the ultimate Indian beneficial owner to Indian authorities in real time, and Mauritius law protected the confidentiality of GBC1 shareholding structures. India could identify Mauritius-incorporated FIIs on its SEBI registers but could not penetrate the Mauritius corporate veil to determine ultimate ownership without treaty-based exchange of information requests — a slow and case-specific mechanism unsuited to systemic monitoring.

The OECD's work on treaty shopping — formalised in BEPS Action 6 — provided the intellectual framework for the 2016 renegotiation. Action 6 established a minimum standard requiring that tax treaties include anti-abuse provisions preventing their use by entities with no genuine economic nexus to the treaty partner. A Mauritius GBC1 with two nominee directors, a local bank account with minimal balance, and an annual board meeting attended remotely or in person for a few hours was, under BEPS Action 6 analysis, a treaty-shopping vehicle rather than a genuine resident entity.

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4. The 2016 DTAA Revision: Architecture of a Managed Withdrawal

Negotiations between India and Mauritius for revising the 1983 DTAA had been ongoing intermittently since at least 2006, when India first formally raised the capital gains issue. The negotiations were politically sensitive on the Mauritius side: the offshore financial services sector had by that point become a significant component of Mauritius's GDP and government revenue, and any revision that eliminated the CGT exemption threatened to structurally undermine GBC1 demand.

The revised protocol was signed on 10 May 2016, during the Modi government's first term, and came into force retroactively from 1 April 2017. The key structural changes were threefold. First, capital gains on shares of Indian companies acquired on or after 1 April 2017 would henceforth be taxed in India — eliminating the Mauritius CGT exemption for new acquisitions. Second, a transitional relief applied for financial years 2017–2019: capital gains on shares acquired after 1 April 2017 but sold before 31 March 2019 would be taxed at 50% of the applicable Indian rate, provided the Mauritius entity could demonstrate it was not established primarily for treaty benefit purposes. Third, existing holdings acquired before 1 April 2017 were fully grandfathered — gains on pre-2017 shares remained exempt regardless of when they were sold. This grandfathering was commercially significant: large positions accumulated over decades of treaty-sheltered investing retained their protection.

The "limitation of benefits" clause introduced into the revised DTAA was a further structural change. Under the new Article 27A, a GBC1 was entitled to treaty benefits only if it met an "anti-avoidance" test — broadly, that it had not been established primarily to obtain treaty benefits. This was a weaker version of the "Principal Purpose Test" that BEPS Action 6 ultimately recommended, but it introduced a qualitative anti-abuse standard where none had previously existed.

Simultaneous with the India-Mauritius revision, India renegotiated its DTAA with Singapore on equivalent terms (May 2016). The Singapore-India treaty had been the second major conduit used for equity investment, with Singapore offering similar (though not identical) treaty benefits. The coordinated dual revision foreclosed the most obvious alternative route for investors who might have pivoted from Mauritius to Singapore.

The market impact was measurable. New GBC1 incorporations targeting Indian equity fell sharply from 2017 onward. AUM figures for Mauritius-domiciled India-focused funds declined. Several major fund managers with large India allocations through Mauritius structures began re-examining the structure of new fund vintages, with some new funds established in Singapore (which retained other advantages including the U.S.-Singapore agreement and FATF membership) or Cayman (for U.S. investor bases). The FSC's own annual reports acknowledged a contraction in India-facing GBC activity while emphasising growth in Africa-focused mandates as an offsetting trend.

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5. Building the African Gateway: DTAA Network and Development Finance Structures

The African pivot was both opportunistic and partly pre-planned. Mauritius had begun signing investment promotion and protection agreements (IPPAs) and DTAAs with African states from the late 1990s, anticipating the eventual need to diversify beyond the India corridor. By 2020, Mauritius had bilateral tax treaties with approximately 22 African states (TBD-VERIFY) including South Africa, Mozambique, Rwanda, Senegal, Lesotho, Botswana, and Zimbabwe, plus a network of IPPAs extending coverage to states without full DTAAs.

The proposition to Africa-focused investors was structurally analogous to the India proposition but with important differences. Where the India DTAA had offered a CGT exemption on a major liquid equity market, the African DTAAs primarily offered reduced withholding tax rates on dividends, interest, and royalties flowing from operational businesses and infrastructure projects to the Mauritius holding vehicle. Private equity, infrastructure, and credit funds investing in African operating companies would structure their holding chain through a Mauritius GBC1 to reduce the withholding tax leakage as returns were repatriated to the fund level.

Development Finance Institutions (DFIs) were significant users of the Mauritius structure for African mandates. The British International Investment (BII, formerly CDC Group), the Dutch FMO, the French Proparco, and the AfDB itself structured co-investment vehicles through Mauritius GBC1 entities when investing in African infrastructure and financial sector projects. The attraction was straightforward: tax efficiency preserved more capital for reinvestment, and the Mauritius legal system (English common law supplemented by the Commercial Court) provided contractual enforceability and arbitration access superior to many African jurisdictions for complex multi-party transactions.

The scale of African investment structured through Mauritius was significant though difficult to attribute precisely. The United Nations Conference on Trade and Development (UNCTAD) and various OECD working group papers noted Mauritius as a major source of investment into sub-Saharan Africa in bilateral FDI statistics, though as with India, a portion of "Mauritius investment" into Africa consisted of third-country capital (European, Asian) using Mauritius as an intermediary rather than genuine Mauritius-origin investment. Estimates of cumulative African investment structured through Mauritius GBCs ranged upward of $96 billion (TBD-VERIFY, cited in AfDB and SADC research contexts) though methodological variations make this figure difficult to verify.

The African civil society critique mirrored and intensified the Indian round-tripping concern. The African Tax Administration Forum (ATAF), Oxfam's Africa Division, the Tax Justice Network-Africa, and academics including Attiya Waris at the University of Nairobi argued that Mauritius DTAAs with African states were asymmetric agreements: they provided primarily downside revenue risk to African treasuries (in the form of withheld withholding taxes) while the benefits — investment facilitation — were obtainable through other means. Several published estimates suggested that Africa lost hundreds of millions of dollars annually in tax revenue through treaty networks with Mauritius, a figure disputed by the Mauritius Financial Services Promotion Agency (FSPA), which countered that the net FDI facilitation effect more than compensated treaty withholding tax concessions.

The SADC Secretariat produced advisory work noting that several Mauritius-Africa DTAAs had been signed under conditions of unequal bargaining power — some African states lacked the technical capacity to model revenue implications at the time of negotiation — and recommended renegotiation of treaties that predated the ATAF model treaty framework. Rwanda, among the more analytically sophisticated SADC members on tax policy, had begun a systematic treaty review programme that explicitly included its Mauritius agreement.

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6. The FATF Grey-Listing: Crisis and Concentrated Reform (2020–2023)

The Financial Action Task Force's Mutual Evaluation of Mauritius, conducted in 2018 and published that year, was the predicate for the grey-listing. The Evaluation assessed Mauritius against FATF's 40 Recommendations on anti-money laundering and 9 Special Recommendations on counter-terrorist financing. The findings were mixed: Mauritius performed adequately on legal and institutional frameworks (the legislative architecture was broadly compliant) but poorly on effectiveness — the degree to which the AML/CFT framework was actually operating to detect, investigate, and prosecute financial crime.

Specific deficiencies identified in the 2018 Mutual Evaluation included: inadequate supervision of Designated Non-Financial Businesses and Professions (lawyers, accountants, real estate agents, and trust and company service providers — all commercially significant in a jurisdiction where management companies and trust administrators serviced GBC structures); insufficient resources at the Financial Intelligence Unit (FIU) relative to the volume of Suspicious Transaction Reports (STRs) being generated; beneficial ownership register data that was not reliably accessible to law enforcement in a timely manner; and weak oversight of the NPO (non-profit organisation) sector for terrorist financing risks.

FATF's October 2020 plenary decision placed Mauritius on the Increased Monitoring list — the grey list. The formal public announcement came in February 2021. The immediate regulatory cascade was severe. The European Commission, under its Anti-Money Laundering Directive (AMLD), designated Mauritius as a High-Risk Third Country, effective March 2021. This designation required European financial institutions to apply "enhanced due diligence" to any transaction with Mauritius-connected counterparties — in practice, substantially increasing compliance costs and processing times for Mauritius-routed transactions involving European banks or fund investors.

The operational consequences propagated through the offshore sector quickly. Correspondent banking relationships — the nostro/vostro arrangements through which Mauritius-licensed banks cleared international transactions — came under scrutiny. Some European correspondent banks suspended or restricted relationships with Mauritius financial institutions pending further analysis. Fund managers holding Mauritius-domiciled vehicles with European Limited Partner (LP) investors faced LP due diligence questions and in some cases contractual notification obligations triggered by the High-Risk designation. The cost of directors' and officers' insurance for Mauritius GBC structures increased. Re-domiciliation inquiries from existing GBC clients to Luxembourg, Ireland, and Cayman increased materially in 2021.

The Pravind Jugnauth government's reform response was concentrated and sequenced. A National AML/CFT Committee chaired at senior ministerial level was operationalised as a coordination mechanism. The FIU was restructured, given additional professional staff, and prioritised the backlog of unanalysed STRs. The FSC launched an intensive GBC supervisory programme: management companies (the licensed intermediaries that incorporate and service GBC structures on behalf of clients) were subjected to increased on-site inspections, with particular focus on beneficial ownership documentation quality, monitoring of Politically Exposed Person (PEP) clients, and transaction monitoring adequacy.

The legislative response included amendments to the Financial Intelligence and Anti-Money Laundering Act (FIAMLA) and the Prevention of Terrorism Act, extending beneficial ownership requirements to DNFBPs and tightening the legal framework for FIU access to beneficial ownership information. The Companies Act was amended to require that beneficial ownership registers maintained by management companies be accessible to the FIU and FSC within specified time limits rather than subject to the previous disclosure procedures.

FATF conducted a series of follow-up assessments through 2022 and early 2023. Its June 2023 plenary decision removed Mauritius from the Increased Monitoring list — a notably rapid exit, completing in approximately two and a half years from grey-listing to exit. FATF's exit statement acknowledged that Mauritius had addressed the required action items: effective implementation of AML/CFT supervision across the sector, functioning beneficial ownership frameworks accessible to competent authorities, and demonstrated prosecutorial follow-through on financial crime cases. The EU removed Mauritius from its High-Risk Third Country list shortly thereafter, restoring normal enhanced-diligence status and relieving the correspondent banking pressure.

The episode had two enduring legacies. First, it demonstrated that small jurisdiction regulatory reputation is fragile and recovery requires sustained political commitment and administrative capacity that small states often struggle to maintain consistently. Second, it accelerated the FSC's already-underway process of abolishing GBC2 structures (completed in 2022 through the conversion of remaining GBC2s to the new "Authorised Company" category), which addressed the most egregious substance gap in the original IBC architecture.

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7. Sector Economics: Size, Employment, and Revenue Contribution

Quantifying the Mauritius offshore financial services sector precisely is complicated by definitional boundaries — what counts as "financial services" versus tourism finance, domestic banking, or insurance varies across official statistical frameworks — and by the deliberate opacity of some sector activities. The following figures draw on Bank of Mauritius, FSC, and Statistics Mauritius data with appropriate caveats.

At its peak, the GBC population exceeded 10,000 licensed structures simultaneously active (TBD-VERIFY, citing FSC Annual Reports circa 2015). Post-2016 DTAA revision, active GBC numbers declined as India-focused vehicles wound down or were not renewed; FSC Annual Reports from 2019–2022 indicate active GBC populations in the range of 5,000–7,000 (TBD-VERIFY). The management company sector — the licensed intermediaries that service GBC clients — comprised approximately 120–150 licensed management companies at peak, a number that consolidated through the post-2016 period as smaller operators found the economics of the India-focused business untenable.

Direct employment in financial services — covering GBC administration, banking, insurance, capital markets, and associated legal and accounting professional services — is estimated at 11,000–13,000 individuals (TBD-VERIFY, Statistics Mauritius Labour Force Surveys). This represents a significant share of total formal employment for an island of 1.3 million people, concentrated in Port Louis and the Ebène Cybercity business district. Indirect employment through corporate services, hospitality for visiting international clients, and real estate is estimated to multiply direct employment by a factor of 2–3 (TBD-VERIFY).

Financial and insurance activities contributed approximately 10–12% of Mauritius GDP in the years 2015–2020 (TBD-VERIFY, Statistics Mauritius National Accounts), with the global business sector constituting a substantial sub-component. Government revenue from the sector is harder to isolate: the nominal corporate tax rate for GBC1s under the deemed foreign tax credit mechanism produced an effective rate of approximately 3%, generating modest direct corporate tax revenue. The larger fiscal contributions came through licensing fees to the FSC, employer and employee contributions to the National Pension Fund from sector employment, personal income tax from sector salaries, and VAT on sector professional services consumed locally.

The Bank of Mauritius has monitored the contribution of global business to the balance of payments. Fee income, management fees, and other financial service exports generated by the sector represent a positive current account contribution that partially offsets Mauritius's trade deficit in goods. The precise magnitude varies with sector activity levels and is captured imperfectly in BOP statistics due to the offshore nature of many transactions.

The post-FATF reform period (2021–2023) coincided with a broader post-COVID recovery in the Mauritius economy. Disentangling the FATF impact on sector activity from COVID disruptions to international business travel, fund-raising activity, and cross-border investment generally is methodologically difficult. The FSC's post-2023 annual report data will be the first clean read on sector dynamics in the post-grey-list environment.

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8. The BEPS Challenge and the Future of the IBC Model

The Organisation for Economic Co-operation and Development's Base Erosion and Profit Shifting project, launched in 2013 and producing its final Action Plans in 2015, represented a systemic assault on the architecture of treaty-shopping jurisdictions of which Mauritius was a paradigm case. BEPS Action 6 (preventing treaty benefit abuse) directly targeted the mechanisms that made GBC1 structures valuable: residence-based CGT exemptions obtained through tax treaties by entities with minimal genuine economic substance in the treaty partner jurisdiction. Action 13 (country-by-country reporting) required multinational groups to disclose their profit allocation, tax payments, and economic activity across jurisdictions to their home tax authority, enabling revenue authorities to identify mismatches between where value was created and where profits were booked.

The October 2021 OECD/G20 Inclusive Framework agreement on a Two-Pillar Solution extended BEPS into new territory. Pillar 2 — the Global Anti-Base Erosion (GloBE) rules — established a 15% global minimum effective tax rate for multinational enterprises with annual revenue exceeding €750 million. Under the Income Inclusion Rule (IIR) and the Undertaxed Profits Rule (UTPR), parent-country jurisdictions of qualifying multinationals can impose a "top-up tax" when a subsidiary is taxed below the 15% floor in any jurisdiction. For Mauritius, this has direct implications: a GBC1 earning income at an effective rate below 15% — which the deemed foreign tax credit mechanism had historically enabled — would trigger a top-up tax obligation in the parent company's home jurisdiction, eliminating the net tax advantage of the Mauritius structure.

Mauritius joined the Inclusive Framework in 2019 and has committed to implementing the Pillar 2 rules, though with transition provisions and carve-outs that complicate the timeline. The Substance-Based Income Exclusion (SBIE) under GloBE carves out income attributable to genuine substance — payroll costs and tangible assets — from the minimum tax calculation. For genuine financial service businesses with real Mauritius employees managing real Mauritius operations, the SBIE provides partial protection. For nominee-director GBC1 structures with minimal real employment, it does not.

The FSC and Mauritius Economic Development Board (EDB) have articulated a strategic response: transition the value proposition from tax efficiency to genuine financial service capability. This means deepening expertise in fund administration, family office services, structured finance documentation, and cross-border legal services — areas where Mauritius's professional class, court system, and regulatory infrastructure provide genuine comparative advantage independent of treaty benefits. The Mauritius IFC (International Financial Centre) branding — explicitly avoiding the "offshore" terminology — has been in use since the mid-2010s and is being reinforced in post-BEPS positioning.

The practical challenge is that the professional services value proposition requires a depth of human capital and institutional capability that takes decades to build and competes against Luxembourg, Dublin, Singapore, and the Channel Islands — jurisdictions with longer track records, larger professional communities, and, in the European cases, passporting rights into the EU single market that Mauritius can never access. The post-2024 Alliance du Changement government inherited this strategic transition as an unresolved governance challenge.

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9. Contested Record

The Mauritius offshore financial sector sits at the intersection of two analytically irreconcilable narratives, each supported by substantial empirical evidence.

The development finance gateway narrative: Mauritius provides an irreplaceable intermediation service for investors seeking exposure to emerging markets that have inadequate domestic legal infrastructure, unreliable contract enforcement, and insufficient financial market depth to attract direct foreign capital. A private equity fund investing in a Kenyan agribusiness or a Mozambican infrastructure project needs a holding vehicle in a jurisdiction where shareholders' agreements are enforceable, arbitral awards are recognised and executable, and the regulatory framework is comprehensible to both Asian and European investors. Mauritius provides this. The treaty network reduces withholding tax leakage that would otherwise make the risk-adjusted return on African investments unattractive relative to alternatives. DFI and development finance flows through Mauritius generate real employment, real infrastructure, and real economic development in African source countries. The counterfactual — no Mauritius structure — is not necessarily "investment through domestic structures" but may be "no investment at all."

The tax-drain narrative: Mauritius functions as a conduit that systematically strips withholding tax revenue from developing countries — India, and across Africa — that have greater fiscal need than Mauritius and that receive de minimis genuine economic activity from the Mauritius corporate entities nominally "investing" in their economies. The GBC1 model was designed to exploit information asymmetries (beneficial ownership opacity), treaty arbitrage (the 1983 India DTAA was never intended for its actual use), and regulatory capacity gaps (African states that lacked the technical ability to model treaty revenue impacts). Round-tripping through Mauritius enabled wealthy Indian and African investors to avoid domestic capital gains taxation and, in some cases, to conceal the beneficial ownership of assets — objectives that are precisely what AML/CFT frameworks exist to prevent. The sector's economic contribution to Mauritius — employment and GDP — is real but largely at the expense of Indian and African revenue authorities who receive nothing for the treaty concessions they extend.

Both narratives are partially correct. The empirical resolution lies in disaggregating the sector by type of use: genuine foreign capital seeking emerging-market exposure through a legally efficient route is economically beneficial; domestic capital round-tripping for CGT avoidance is economically harmful in aggregate; corporate profit-shifting through royalty or interest payments to low-substance Mauritius subsidiaries (the BEPS target) damages source-country public finances. The Mauritius sector contains all three in proportions that cannot be precisely established because beneficial ownership opacity — the feature most valuable to users — prevents measurement.

The BEPS and FATF reform programmes are progressively eliminating the features that enabled the second and third use-cases. Beneficial ownership transparency, substance requirements, minimum tax floors, and treaty anti-abuse clauses all narrow the space for opacity and rate arbitrage. What survives should be closer to the first use-case — genuine international financial intermediation. Whether the residual legitimate business is large enough to sustain the sector at its historical scale, and whether Mauritius's professional infrastructure is deep enough to compete on service quality alone, are questions whose answers will be determined over the next decade.

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10. Conclusion

The Mauritius offshore financial centre is one of the most studied and contested governance experiments in small-island economic development. From the Offshore Business Activities Act of 1992 through the DTAA network construction, the India routing boom, the 2016 DTAA revision, the African pivot, the FATF crisis, and the post-grey-list reform, the sector has completed three distinct lifecycle phases in thirty years.

The first phase (1992–2016) was defined by the India-Mauritius DTAA exploitation. This phase generated the sector's economic foundations — the management company industry, the professional class, the FSC regulatory capacity, the court jurisprudence — but also embedded the dependency on a single bilateral treaty arrangement that India ultimately renegotiated when the fiscal and round-tripping costs became politically unsustainable.

The second phase (2016–2021) was the African pivot and its accompanying legitimacy crisis. The pivot was commercially viable but generated a structural replication of the India problem: the sector's value proposition again rested on treaty arbitrage and beneficial ownership opacity applied now in an African context where the political economy of critique was if anything more acute, given the acute fiscal constraints of sub-Saharan African governments.

The third phase (2021–present) is defined by the FATF grey-listing, concentrated reform, and the post-grey-list repositioning in a BEPS Pillar 2 environment. This phase has eliminated the most egregious features of the original architecture — GBC2 is abolished, beneficial ownership registers are genuinely accessible to law enforcement, DNFBP supervision is functional — but faces the deepest structural challenge in the sector's history: the elimination, through global minimum tax rules, of the rate differential that was always the foundation of the proposition.

The governance lesson is broader than Mauritius. Small states seeking to build offshore financial centres face a fundamental dynamic: the features that make such centres attractive (low rates, opacity, treaty access) are precisely the features that international normative regimes progressively target. The window of opportunity is a function of how long it takes the OECD, FATF, and EU to close the space. Mauritius was faster to build and more resilient in defending its sector than most analysts expected; it is now faster to reform than most expected. Whether the reformed sector is economically viable at scale remains the open question.

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