Keywords: General Anti-Avoidance Rule (GAAR), Grandfathering, Cross-Border Taxation

Introduction
On January 15, 2026, the Supreme Court (“SC”) delivered its judgement in Authority for Advance Rulings v. Tiger Global International II Holdings, marking a significant turning point in India’s international tax jurisprudence. The Court invoked the General Anti-Avoidance Rule (“GAAR”) despite Double Taxation Avoidance Agreement (“DTAA”) protection for Mauritius-rooted investments, denying treaty benefits to Tiger Global’s Mauritius entities on their 2018 exit from Flipkart.

The decision raises three critical questions in India’s cross-border tax framework upon which billions of dollars of foreign investment in India rest: the evidentiary value of tax residency certificates (“TRCs”), the scope of grandfathering for pre-2017 investments, and the expansion of anti-avoidance scrutiny at the threshold stage. The judgement introduces uncertainty, deterring long-term investment, especially at a time when India seeks to position itself as a reliable investment destination. This analysis examines the long-term practical implications of the ruling and the way forward in restoring the balance between revenue security and investment certainty.

Tiger Global’s Mauritius Structure and the Procedural Background
Tiger Global, a US-based private equity group, held its investment through Mauritius incorporated entities in Flipkart Pvt. Ltd., a private company incorporated in Singapore which derived substantial value from Indian assets. These investments were made over 2011-2015. In 2018, Tiger Global sold its entire stake as a part of Walmart’s $16 billion acquisition of Flipkart. The assesses claimed exemption from Indian capital gains tax under Article 13(4) of the India-Mauritius DTAA, relying on valid TRCs issued by the Mauritian authorities and CBDT Circular No. 789. The Authority for Advance Rulings (“AAR”) declined the same on the grounds that the transaction prima facie involved tax avoidance and, as a result, failed to meet the threshold under Section 245R(2)(iii) of the Income Tax Act, 1961 (“IT Act”). The Delhi High Court (“HC”) quashed AAR’s order and ruled in favour of Tiger Global, which eventually led to an appeal to the SC.

The Dilution of TRC Based Evidence and the Doctrinal Shift to GAAR Supremacy
One of the most significant consequences of the ruling is the weakening of the evidentiary value of TRCs. The India-Mauritius DTAA (1983), notified under Section 90 of the IT Act, allocates taxing rights over capital gains under Article 13(4) exclusively to the state of residence. The CBDT Circular No. 682 (1994) further clarified that capital gains from the sale of shares in an Indian company by a Mauritius resident are exempted from taxation in India. Importantly, Circular No. 789 mandates furnishing a valid TRC to claim benefits under the treaty.

This circular was upheld in the case Union of India v. Azadi Bachao Andolan, later reaffirmed in the Delhi HC’s judgement in Blackstone Capital. The courts have consistently held the position that a TRC is sufficient proof for claiming tax benefits under the treaty. This means that the burden of proof was on the income tax authorities to establish that the taxpayer is a conduit entity established with the primary purpose of tax evasion.

Later, the Finance Act, 2012 inserted Section 90(4) requiring the “production of TRC” as a necessary condition for claiming benefits under the treaty. The Finance Bill, 2013 initially proposed to include that a TRC may be “necessary but not a sufficient condition,” but the same was abandoned taking into account market concerns.

The judgement in Tiger Global marks a shift from this position by diluting the evidentiary value of TRC. The court endorses a “head and brain” test for ascertaining the place of effective management under Article 4 of the DTAA. This approach examines the place of real decision-making and control of the entity so as to conclusively determine the applicability of TRC. While TRC still remains valid proof of residence, it is no longer considered a conclusive proof of evidence. This permits extensive scrutiny into the entity’s operational substance without necessarily requiring proof of fraud or misrepresentation, leaving investors with no reliable mechanism to determine their tax position in advance.

It is also important to take into account that TRCs are issued by competent authorities of partner countries of the treaty in accordance with their domestic statutes and treaty obligations. The failure to value such TRCs is an indication of mistrust and risks reciprocal challenges to Indian residents claiming treaty benefits abroad.

Extending GAAR to Grandfathered Investments
The SC’s application of GAAR to exits on investments made prior to April 1, 2017, weakens the certainty of India’s grandfathering framework and the protection granted under Article 13(3A) of the India-Mauritius DTAA. Article 13(3A), introduced in 2016, exempts capital gains from the transfer of shares acquired before the cutoff date from taxation in India. The SC, in Kalyani Packaging Industry v. UOI, highlighted that grandfathering is a device to protect existing rights and arrangements from the effect of new legislation or regulation, so as to prevent prejudice to those who acted in good faith and maintain investor confidence. Further, the legislative intent was to protect investors who structured holdings under the previous framework from retrospective taxation. The Shome Committee Report (2012) cautioned against invoking GAAR provisions against investments existing as on the date of commencement of GAAR. The report recommended such investments to be grandfathered, including the exit on or after this date. The Finance Minister in the Budget Speech of 2015 clarified that GAAR will apply prospectively to investments made on or after 01.04.2017. This highlights the legislative intent which seeks to protect both the investment and its natural lifecycle, including exit. In K.P. Varghese v. ITO, it was emphasised that when a statute confers protection to existing rights, it should be interpreted so as to give full effect to the legislative intent behind such protections.

The SC analysed Rule 10U of Income Tax Rules, 1962, which delineates GAAR’s applicability. Contrary to the legislative intent of GAAR, the Court made a distinction between “arrangements” and “investments,” holding that only the latter is grandfathered. While the shares were acquired prior to April 1, 2017, the transfer of the same in May-June 2018 was an independent “arrangement” attracting GAAR scrutiny, notwithstanding the grandfathering provision.

As a result, the judgement implies that the investments made before April 1, 2017, do not automatically receive protection under the treaty if the exit or transfer occurs thereafter. Such an approach is difficult to reconcile with Section 90 of the Income Tax Act, which allows the DTAA to override domestic laws if they are more beneficial to the assesses. The ruling also disregards the commercial realities on the ground that no investor acquires shares to hold them perpetually. Every investment is made with an intent to secure an exit in the future. Therefore, exits are an inherent part of the investment, and to consider it a distinct arrangement is tantamount to nullifying grandfathering.

The Court’s approach also marks a shift in anti-avoidance analysis. The judgement dwindles the certainty of the tax framework for foreign investment in the country. If an exit from a pre-2017 arrangement is made after 2017, then it can be considered as a distinct “arrangement” subject to GAAR. Consequently, any investment can now be potentially characterised as a fresh “arrangement.” Even internal restructurings, inter se transfers within a corporate group, or changes in holding structures undertaken for regulatory or commercial reasons may be considered as separate “arrangements,” being subjected to GAAR scrutiny. Such an interpretation dilutes the assurance of grandfathering and risks exposing legitimate investments to retrospective anti-avoidance review.

Departure from Established Anti-Avoidance Jurisprudence
In Vodafone International Holdings BV v. Union of India, the SC rejected retrospective characterisation of legitimate structures and acknowledged that treaty-based planning does not by itself amount to tax avoidance. Further, it held that tax avoidance scrutiny requires examining multiple factors such as the duration of time during which the holding structure exists, the period of business operations in India, the generation of taxable revenues in India, the timing of the exit, and the continuity of business on such exit.

Even in Azadi Bachao, the Court emphasised that taxing authorities cannot investigate the underlying motive of the assesses for choosing a particular country once the conditions under the DTAA are fulfilled. The Delhi ITAT in 2023 affirmed the same and held that there should be substantial evidence to invoke GAAR. So unless the transaction as a whole was a sham, the entity would be allowed to avail treaty benefits.

The present ruling, however, shifts to an approach involving inquiry into the broad form substance as undertaken in McDowell & Co. Ltd. v. CTO. However, it is imperative to mention that McDowell is confined to colourable drives rather than mere tax planning. The ruling upheld the AAR’s extensive inquiry under Section 245R(2)(iii) of the IT Act, which arguably exceeds the “prima facie” examination. This allows tax authorities to exercise wide powers contrary to what was statutorily granted.

In the present case, the corporate entity operated for a period of seven years from 2011 to 2018, holding valid Global Business Licences, maintaining offices and staff in Mauritius, and generating taxable revenue. Such a long-standing structure should not be dismissed as tax avoidant “prima facie” and would constitute a valid investment under the factors enumerated under the Vodafone judgment.

Way Forward
While there is a need to ensure that the tax base is not compromised through treaty shopping, the aim should be achieved in a way that does not make the investors lose confidence and maintains certainty in the tax structures. Diluting statutory instruments such as TRCs on cross-border investments has detrimental effects on cross-border investments. It is important to develop clear standards to rebut TRCs rather than granting discretionary power to revenue officials to subjectively assess investments.

The judgement narrows down the grandfathering protection afforded to investment; however, such a change should have been brought into effect through clear legislative amendment to ensure clarity in India’s tax treaty framework. Hence, rules explicitly delineating the scope of grandfathering would serve a wider purpose rather than case-by-case judicial analysis.

In conclusion, Tiger Global will undoubtedly significantly impact future tax treaty as well as GAAR litigation.