The Tiger Global Judgment and the Reassertion of Source-State Fiscal Sovereignty

[Vedansh is a student at Rajiv Gandhi National University of Law.]

On 15 January, 2026, a landmark judgement was delivered by the Supreme Court (SC), which will reshape private equity and venture capital funding structures in emerging markets. In Tiger Global International Holdings v. Authority for Advance Rulings (Tiger Global/judgment), the SC overturned USD 1.6 billion in tax-treaty benefits and affirmed the imposition of more than USD 1.5 billion in combined tax and penalties. This indicates a fundamental shift, where developing countries may no longer regard international tax treaties as safe harbors for multi-layered holding company structures. The SC applied the substance-over-form approach (based on economic reality) and asserted a strong vision of source state fiscal authority. This development has significant implications for international investment law and treaty-based tax planning.

This blog first examines how the SC’s ruling unsettles the long-standing assumption that a Tax Residency Certificate provides a safe harbour for treaty benefits. It then analyses how the court applied a substance-over-form approach to scrutinize intermediary holding structures and reassert source-state taxing rights. The discussion subsequently explores the broader implications for private equity investment models, the emerging policy tension between fairness and certainty, and the risks of fragmentation in international tax enforcement. The blog concludes by reflecting on whether unilateral anti-abuse measures can sustainably coexist with the existing treaty framework.

The End of the TRC Safe Harbour

For decades, treaty shopping rested on a relatively stable assumption. It includes a valid Tax Residency Certificate (TRC), issued by the jurisdiction partner of the treaty, which is regarded as sufficient proof of claiming treaty benefits. The recent SC decision unsettles this assumption; it held that even in the case of investors with genuine TRC, Indian treaty benefits could be defeated by the Indian General Anti-Avoidance Rules. The SC stated that this examination might be applied to the investments made before 1 April 2017, that were considered safeguarded by the grandfathering rules. In addition, the ruling shifted the burden of proving decision-making autonomy and economic significance in intermediary holding institutions onto investors instead of formal adherence. This is a move towards de-formalising tax administration towards being more exuberant about fiscal sovereignty.

This shift will have substantial implications for global private capital. Private equity and venture capital funds invest trillions of dollars through holding company structures in jurisdictions such as Mauritius, Singapore, Cyprus, and Luxembourg. The most common model involved the United States-based fund investing in India through a Mauritius holding company to avail itself of capital gains exemptions under the India-Mauritius Double Taxation Avoidance Agreement. The intermediate entity usually had no commercial role other than to gain treaty benefits. For decades, this structure operated with a high degree of predictability. The holders of a valid Mauritian TRC generally sufficed to secure tax-neutral exits.

Substance Over Form: What the Court Actually Did

In Tiger Global, the SC rejected this model and examined whether the Mauritian entities exercised real decision-making authority. The SC held that in Tiger Global, strategic and commercial decisions were taken by the fund manager in New York, while the Mauritian boards functioned largely on paper. In the absence of genuine substance, treaty benefits were denied. Professional advisors have indicated that a significant number of similar cases are currently under audit in India, including transactions completed before the judgment. If this substance-based approach is adopted more broadly by other emerging markets, the dominant private equity and venture capital fund structure of the past decades could be significantly constrained. 

The decision by the Indian SC to apply anti-abuse principles on a unilateral basis reflects a broader recalibration of the developing countries. In the past, source states generally ignored aggressive tax planning as it attracted foreign capital. The SC reasoning implies a rejection of such a bargain. It affirms that even in cases where there is no bilateral renegotiation or multilateral coordination, the source state would still be in a position to evaluate whether the benefits of the treaties are being misused. In comparison, tax authorities in Brazil began scrutinizing holding structures on a substance-based basis. Mexico issued guidelines to interpret treaties with economic substance. Indonesia has also signaled similar intentions. The contrasting factor in India’s approach is that it acts through domestic anti-abuse rules rather than relying on mutual agreement procedures or OECD-led reforms. 

The asymmetry of the power structure partially accounts for this unilateralism. Developing countries usually possess limited leverage in renegotiating tax treaties with capital-exporting countries. Thus, domestic anti-avoidance measures provide a mechanism for developing countries to reclaim tax revenue without prolonged diplomatic negotiations. If emerging markets adopt similar strategies, it may result in collective reaffirmation of the source country's fiscal authority under international investment law.

Fairness versus Certainty: The Emerging Policy Dilemma

Simultaneously, the judgment creates a problematic policy dilemma. It advances distributive fairness by addressing scenarios of double non-taxation where income is not taxed under either source or residence jurisdiction. However, it creates legal uncertainty by compromising the predictability associated with traditional tax treaties. Significant trade-offs in private equity and venture capital funds will now face a range of strategic responses. 

An alternative is to implement the inclusion of genuine economic substance into intermediate holding structures. This will involve setting up actual offices, personnel, and decision-making capability at the treaty jurisdiction. Though treaty benefits may be saved, it can prove very expensive to operate. The second alternative is to adopt direct country-of-source taxation by simplifying structures and investing directly into the operating companies. This alternative may reduce the internal return by exposing investors to higher capital gains tax rates. The third alternative involves repositioning existing assets based on public listings rather than trade sales, since some jurisdictions provide favorable treatment to capital gains for listed securities. A fourth possibility is a strategic repositioning of capital away from emerging markets towards jurisdictions which have comparatively predictable and stable tax regimes. Industry commentary indicates that global funds are already reevaluating their emerging markets exposures following the judgment. 

Risks of Fragmentation and the Rise of Double Taxation

The effects of Tiger Global are unlikely to remain confined to India. If international tax authorities (across jurisdictions) adopt substitute-based treaty interpretation without coordination, it would lead to fragmentation. A scenario where an investor establishes a holding entity in Singapore that meets Singaporean substance requirements and invests in Brazil. Now, Brazilian authorities conclude that the entity is not substantial relative to Brazil's source economy and enforce domestic anti-avoidance rules. If Singapore still considers the entity to be a legitimate resident, both jurisdictions can tax the same gain. Mutual agreement procedures are ill-suited to address issues in which states fundamentally disagree on substance assessment. This leads to the possibility of double taxation rising and double non-taxation decreasing. 

The SC recognized this contradiction but pointed out that tax treaties are entered into to avoid double taxation, not to facilitate tax evasion. In the Tiger Global structure, India did not charge tax on economic activity within its territory, Mauritius did not charge taxes under the treaty, and the United States taxed gains only upon repatriation. This structure, altogether, results in the absence of taxation.  The judgment represents a legitimate attempt to reinterpret treaties with economic implications in such scenarios. 

Conclusion: The Future of Source-State Fiscal Sovereignty

Ultimately, Tiger Global will bring radical accountability to international investment law. The biggest question is whether unilateral source-country anti-abuse measures can be adopted within the existing treaty framework or whether renewed multilateral coordination is necessary. The OECD’s Base Erosion and Profit Shifting initiative aimed at harmonizing the anti-abuse norms, but fell short of fully empowering source states to apply substance-over-form doctrines independently. India has taken a decisive step in the same direction. In the years to come, cross-border investments across jurisdictions will be shaped by the approach developing countries follow, the ability of a coordinated mechanism (in response), and a new equilibrium around substance-based taxation. What appears evident is that formalistic treaty shopping is losing its normative and legal basis.