India Amends Mauritius Tax Treaty with Principal Purpose Test to Combat Treaty Shopping

What Happened

The Government of India has amended the India-Mauritius bilateral income tax treaty by inserting a Principal Purpose Test (PPT) mechanism, a significant anti-avoidance measure designed to restrict the misuse of treaty provisions. This development follows India's broader commitment to the OECD's Base Erosion and Profit Shifting (BEPS) Action 6 initiative, which mandates that countries incorporate anti-treaty shopping provisions into their tax treaties.

The PPT clause operates as a gatekeeping mechanism: treaty benefits will be denied to arrangements or transactions where obtaining those benefits constitutes one of the principal purposes of the arrangement or transaction. The test applies to all treaty provisions unless explicitly exempted, making it a comprehensive safeguard against artificial structuring.

This amendment reflects India's proactive stance in updating its tax treaty network. The Mauritius treaty is particularly significant as Mauritius has historically been a preferred jurisdiction for investment into India, given the treaty's concessional withholding tax rates and other favorable provisions. By introducing the PPT, India seeks to ensure that legitimate cross-border business activity continues to benefit from treaty protection, while artificial arrangements designed purely for tax reduction are curtailed.

Why It Matters

The introduction of the PPT addresses a longstanding concern in international taxation: treaty shopping and treaty abuse. Under the previous regime, sophisticated taxpayers could establish structures in low-tax treaty jurisdictions (such as Mauritius) to channel investments into India or route profits out, claiming treaty benefits not intended for such arrangements. The PPT creates a principled, objective standard that distinguishes between legitimate business activities and tax-driven constructs.

For Indian tax administration, this measure significantly strengthens the Central Board of Direct Taxes' (CBDT) enforcement capability. Previously, challenging treaty benefit claims required demonstrating abuse of law or sham transactions under general anti-avoidance rules (GAAR) under Section 96 of the Income Tax Act, which involved higher evidentiary burdens. The PPT provides a more direct mechanism to deny benefits without necessarily proving fraudulent intent.

The amendment also signals India's alignment with the global minimum tax standards and multilateral treaty initiatives. As India continues attracting foreign investment and expanding its treaty network, embedding anti-avoidance safeguards demonstrates fiscal responsibility and reduces international pressure for unilateral anti-avoidance measures, such as expanded withholding taxes or exit taxes.

For Mauritius-based entities and funds, the change requires reassessment of investment structures. Mauritius has long been a conduit for Africa-India trade and investment, partly due to favorable treaty terms. The PPT does not eliminate these benefits but demands genuine business substance.

Practical Impact

MNEs and investment funds with Mauritius-based holding structures should conduct urgent tax risk reviews. Structures that cannot articulate a commercially rational purpose beyond tax reduction now face heightened audit risk. Finance teams must document and contemporaneously support the genuine business rationale for transactions: economic substance, regulatory compliance needs, market access, operational efficiencies, and non-tax benefits.

For CFOs of India-focused multinational groups, the practical implications include:

**Compliance burden:** Enhanced documentation requirements similar to Transfer Pricing documentation under Rule 10A(2) of the Income Tax Rules. Taxpayers should prepare "principal purpose" memoranda detailing non-tax rationales for structuring choices.

**Advance planning:** Structures established before the treaty amendment may face inquiries if they cannot withstand PPT scrutiny. Time-sensitive entities should consider restructuring or seeking Advance Pricing Agreements (APAs) with enhanced documentation.

**Withholding risk:** Indian payers making treaty-claim-eligible payments (dividends, interest, royalties, fees) should seek additional certifications from Mauritius payers confirming PPT compliance. Withholding errors could trigger demands on both parties.

**Sector exposure:** PE funds, portfolio investors, and real estate groups investing through Mauritius are most directly affected. Conversely, manufacturing, R&D, or service entities with genuine operational substance in Mauritius will experience minimal impact.

The CBDT is likely to issue guidance clarifying PPT application and safe harbors in coming months. Tax advisors should monitor updates from the Ministry of Finance and brace for increased scrutiny during treaty benefit audits.

Key Takeaways

• →Principal Purpose Test in the India-Mauritius treaty denies benefits to arrangements where tax reduction is a principal purpose; affected taxpayers must document non-tax business rationale and contemporaneous economic substance
• →Finance teams should immediately audit Mauritius-based structures and consider filing additional certifications with Indian payers to mitigate withholding tax and assessment risk
• →The amendment strengthens CBDT's enforcement without requiring proof of sham or fraudulent intent; audit defense now requires affirmative demonstration of genuine business purpose, not merely absence of illegality
• →Private equity funds, investment vehicles, and multinational holding structures face highest compliance impact; genuine operational businesses in Mauritius are largely unaffected
• →Expect detailed CBDT guidance and increased treaty benefit audit activity within 12–18 months; entities should engage tax counsel now to document PPT compliance and consider Advance Pricing Agreements

Disclaimer: This update is for general information only and does not constitute legal, tax or professional advice. Regulatory positions may change. Please consult APRA & Associates LLP for advice specific to your business. Contact us.