India’s Supreme Court in January 2026 in Tiger Global clarified the critical distinction between legitimate tax planning and impermissible tax avoidance while ruling against a global investment fund using Mauritius-based entities. Although tax planning is legally permitted, the Court held that structures lacking real commercial substance—such as decision-making, management, and economic activity—cannot claim treaty benefits. The case involved investments routed through Mauritius entities to claim exemption under the India-Mauritius DTAA, but the Court found that actual control and key decisions were exercised outside Mauritius, rendering the entities mere shells. Importantly, the Court held that GAAR (General Anti-Avoidance Rules) applies based on when the tax benefit arises, not when the investment was made, rejecting the argument of grandfathering. The ruling reinforces that treaty benefits require genuine substance, not just legal form, and signals increased scrutiny of offshore investment structures lacking economic reality.
The Oldest Question in Tax Law
Every tax system in the world wrestles with the same problem: you write a law to raise revenue, and within months, smart lawyers find ways around it. Is that fraud? Or just good advice?
The British courts answered this long ago in IRC v. Duke of Westminster; a taxpayer has every right to arrange their affairs so as to pay the minimum tax the law allows. India’s Supreme Court said the same thing in the Vodafone case back in 2012. The right to plan your taxes isn’t just tolerated; it’s legally recognised.
But there’s a catch and it’s a big one. “Planning” means working within the law’s framework. The moment you start building structures that exist purely on paper, with no real business activity, no real decision-making, no real presence, you’ve crossed a line. You’re no longer planning around the law. You’re using its form while violating its substance.
That’s exactly what happened here.
How the Mauritius Route Worked and Why Everyone Used It
For nearly four decades, the India-Mauritius tax treaty was the most valuable document in a foreign fund manager’s toolkit. Under the original 1982 agreement, capital gains from Indian shares, if routed through a Mauritius-based entity, were taxable only in Mauritius, which effectively meant they weren’t taxed at all.
The result? An entire industry of holding companies, investment vehicles, and “global business licence” entities sprouted in Port Louis. Thousands of them. Many had office addresses, local directors, and bank accounts. Some had little else.
Foreign investors, private equity funds, venture capital firms, hedge funds; poured money into India through these structures. It was, to be blunt, the standard playbook. The Indian government knew about it. The CBDT even issued circulars facilitating it. For a long time, nobody seriously challenged it.
Then Vodafone happened, and then GAAR happened, and then the treaty itself was amended in 2016 to bring capital gains back into India’s taxing jurisdiction, at least for investments made after April 1, 2017. That date would turn out to matter enormously.
Enter Tiger Global
Tiger Global is, by any measure, a serious fund. Founded by Charles Coleman, it backed some of the biggest names in global tech and in India, it had an extraordinary run. Flipkart, Razorpay, Dream11, Groww, Meesho, its India portfolio was the envy of the investment world.
Between 2011 and 2015, three of Tiger Global’s Mauritius-incorporated vehicles: Tiger Global International II, III, and IV Holdings, acquired shares in Flipkart Singapore, a holding company whose entire value flowed from Indian operations.
In 2018, Walmart bought Flipkart for $16 billion in what became the largest e-commerce acquisition in history. Tiger Global’s share of that windfall was approximately $1.6 billion. The Mauritius entities sought a ruling from India’s Authority for Advance Rulings, essentially asking for official confirmation that the gains were exempt from Indian tax under the DTAA.
The AAR said no. Tiger Global appealed. The Delhi High Court reversed the AAR and ruled in Tiger Global’s favour. The Revenue appealed to the Supreme Court.
In January 2026, the Supreme Court reversed the High Court.
What the Court Actually Found
The core issue was this: were Tiger Global’s Mauritius entities real companies with genuine commercial operations in Mauritius, or were they shell vehicles managed from New York?
The answer, the Court found, was clearly the latter.
Yes, the companies had Category 1 Global Business Licences in Mauritius. Yes, they had Mauritian-resident directors. Yes, they maintained bank accounts and registered offices on the island. But look closer, and the substance evaporated.
The authority to approve transactions above $250,000 was not with the Mauritius board, it sat with Charles Coleman, Tiger Global’s founder, who was based in the United States. Real decisions were made in New York. The Mauritius structure was a wrapper, not a business.
The Court then turned to GAAR. Here’s where things got particularly significant for the broader industry: Tiger Global had argued that since the investments were made before April 2017, they should be “grandfathered”, exempt from GAAR scrutiny under transitional provisions. The Supreme Court disagreed. What matters, it said, is not when you invested, it’s when the tax benefit arises. The Flipkart sale happened in 2018. GAAR applies.
The Distinction, Restated
It’s worth pausing here to state the principle clearly, because it matters.
Tax planning is legitimate. If the law gives you a choice where you structure your business this way and pay less tax, structure it another way and pay more then you’re entitled to choose the former. Nobody is obligated to arrange their affairs for the Revenue’s convenience.
Tax evasion is criminal. It involves lying, concealment, sham documents, or deliberate misrepresentation to escape a tax liability that genuinely exists.
Between these two sits tax avoidance which is technically lawful, but designed to exploit gaps or mismatches in the law in ways Parliament never intended. This is precisely what GAAR targets. It allows tax authorities to look past the form of a transaction, examine its substance and purpose, and tax it according to economic reality rather than legal labelling.
What Tiger Global’s structure represented, in the Court’s view, was impermissible avoidance that crossed the line. The Mauritius companies weren’t there to do business in Mauritius. They were there to avoid tax in India. Once that is established, the treaty protections fall away.
The Ripple Effects
The verdict did not land quietly.
A coalition of some 60 Indian startups promptly wrote to the government asking for clarity specifically, reassurance that the ruling wouldn’t be used to reopen old investment structures across the board. The anxiety was real. A significant chunk of pre-2017 foreign investment into India flowed through Mauritius, Singapore, or similar jurisdictions. If GAAR could reach back into those investments, the implications for fund exits would be enormous.
Beyond Tiger Global itself, the ruling cast a shadow over related disputes most notably Blackstone’s own treaty challenge involving Singapore, which is still working its way through the courts. The practical question for every PE and VC fund with Indian exposure now is whether their offshore holding structures have genuine commercial substance, or whether they too are vulnerable.
The answer, in many cases, is probably uncomfortable.
From Vodafone to Tiger Global: The Arc of the Law
It would be wrong to read the Tiger Global ruling as the Court reversing itself from Vodafone. It isn’t. The legal landscape changed materially between 2012 and 2026.
Vodafone was decided when GAAR didn’t exist in India. The Mauritius treaty still offered blanket protection. The indirect transfer provisions were not yet law. The Court in Vodafone was dealing with a different statutory framework.
By 2026, GAAR had been in force for nearly a decade. The Mauritius treaty had been renegotiated. The direct tax framework had been fundamentally overhauled. The Tiger Global Court was applying a different body of law and its conclusions follow logically from that law.
This is an important point for practitioners: the precedent set by Tiger Global cannot be cleanly dismissed as judicial overreach. It reflects exactly the kind of scrutiny Parliament intended when it enacted GAAR.
The Takeaway
The Tiger Global case is, at its heart, about financial honesty. When a company is incorporated in one country to do business in another country, while being managed from a third country, for the sole purpose of avoiding tax in the second country, no legal fiction makes it a legitimate resident of the first.
Tax planning works when it is built on real economic activity. A genuine holding company with real governance, real staff, real decision-making, and real commercial purpose can legitimately claim treaty benefits. A post-box in Port Louis managed by a partner in Midtown Manhattan cannot.
The Supreme Court has now said so, clearly and finally.
For investors, the message is to get the substance right and not just the paperwork. For tax authorities, the message is to use this power judiciously, not as a backdoor to invalidate decades of legitimate foreign investment. And for everyone in between the advisors, the fund managers, the structuring lawyers, the message is perhaps the oldest one in the book:
If the only reason a structure exists is to avoid tax, don’t be surprised when a court sees through it.
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