On paper, Maurifund Holdings is a Mauritius-registered investment company. It owns ₹4,000 crore worth of shares in three Indian companies. Its registered office is a shared building. Its "directors" sign about 30 board resolutions a year, mostly faxed in from Mumbai for signature. Its bank balance — the operating account — averages about USD 8,000 across the year. Its only Mauritius staff is a part-time secretary at the trustee firm.
In 2014, Maurifund sells its Indian shareholding for ₹7,000 crore. Capital gain: ₹3,000 crore. Indian tax paid: nil.
Why? Because the India–Mauritius tax treaty said so. And because — for two decades — India honoured what the treaty said, even when it was clear the "Mauritius" company was an Indian fund wearing a Mauritius hat.
- India and Mauritius signed a tax treaty in 1983 that gave Mauritius the sole right to tax capital gains on Indian shares held by a Mauritius resident. Mauritius doesn't tax capital gains. Net result: zero tax anywhere.
- For two decades, Indian-origin funds and foreign investors routed their Indian equity investments through paper companies in Mauritius to claim this treaty benefit. The pile-up of capital was massive — Mauritius became India's biggest "source" of FDI for years.
- The cycle ended in 2017 when India re-negotiated the treaty. Mauritius capital gains exemption was withdrawn in phases. A similar amendment followed for the Singapore treaty.
- Three principles now cut through paper structures: GAAR (Apr 2017), Place of Effective Management (POEM, Apr 2017), and limitation-of-benefits clauses in re-negotiated treaties.
- The lesson isn't "treaty shopping was clever". It's that — for 25 years — the gap between residence as defined and residence as it actually was, was so wide a fund could fit a postbox into it.
How the trick worked — the mechanics
India–Mauritius DTAA Article 13(4) said: capital gains on shares of an Indian company are taxable only in the seller's country of residence. If the seller is "resident in Mauritius", India can't tax. Mauritius can — but Mauritius didn't tax capital gains domestically. Net rate: 0%.
A "Tax Residency Certificate" (TRC) from the Mauritius Revenue Authority — and that was it. No substance test. No board-in-Mauritius requirement. Just incorporation + TRC. The Indian Supreme Court (Azadi Bachao Andolan, 2003) said the TRC was sufficient — Indian tax officers couldn't look behind it.
An Indian promoter (or foreign investor wanting Indian exposure) sets up a Mauritius IBC ("International Business Company"). Pays ~USD 5,000 / year in fees to a trustee firm in Port Louis. The IBC opens a Mauritius bank account. Indian investments are made by the IBC, not by the underlying owner.
When the time comes to sell — the IBC sells. Mauritius says "this is a Mauritius resident — go talk to the Mauritius treasury". Mauritius treasury says "we don't tax capital gains". India looks at the treaty and says "we have no taxing right here". Tax paid: ₹0.
Some of the money flowing from "Mauritius" into India was, originally, Indian money. An Indian promoter would send funds offshore (via legitimate or grey channels), park them in a Mauritius IBC, then "invest" them back into India as foreign capital. The same money flowed out tax-free. This is the part that drew political heat.
Cayman has zero tax but doesn't have a tax treaty with India — so its residents are taxed at India's normal foreign-investor rates. Mauritius had a near-zero-tax regime plus the treaty. That combination is what made it irresistible. Singapore added a similar treaty in 2005 and quickly became Mauritius's main competitor.
The numbers — by 2015, this was massive
- Mauritius accounted for roughly 33% of cumulative FDI into India by 2014 — far more than the US, UK, Japan, or Germany.
- Singapore was second at ~16%, after the India-Singapore treaty was amended in 2005 to mirror Mauritius's exemption.
- The Indian tax department estimated ₹1.5 lakh crore of capital gains slipped through the Mauritius route in just one decade.
- By the early 2010s, almost every large foreign institutional investor in Indian equities used a Mauritius or Singapore vehicle. It became the default, not the exception.
How India dismantled it — three reforms, 2015–2017
2016 protocol
Treaty renegotiated
India and Mauritius signed an amending protocol on 10 May 2016. From 1 April 2017, India got source-state taxing rights on capital gains on shares acquired on or after that date. Shares acquired earlier remained grandfathered.
GAAR (Apr 2017)
Sec 95–102
General Anti-Avoidance Rule. An "impermissible avoidance arrangement" with no commercial substance can be re-characterised, ignored, or denied treaty benefits. Tax benefit threshold: ₹3 crore. Commissioner-level approval required to invoke.
POEM (Apr 2017)
Sec 6(3)(ii)
A foreign company is treated as Indian-resident if its "Place of Effective Management" is in India. If the Mumbai-based managers actually run the Mauritius IBC's affairs from Mumbai, the IBC becomes an Indian taxpayer on its global income.
The three reforms reinforce each other
Each reform tackles a different leg of the structure:
- Treaty protocol closes the "Mauritius capital gains free zone" for new shares acquired after 1 April 2017 (with a 2-year transitional concession at 50% rate).
- GAAR lets the tax officer ignore any structure whose main purpose is tax benefit and which has no commercial substance — Mauritius mailbox or not.
- POEM attacks the residence question itself. If the IBC's board takes its real decisions in Mumbai, it isn't actually a Mauritius resident; it's an Indian resident for tax.
Together, they made the old Mauritius mailbox structurally unworkable. The funds didn't disappear — they restructured. Many moved to GIFT City IFSC (Gujarat), which gets a domestic tax holiday and is fully Indian-supervised.
The funny historical wrinkle — Azadi Bachao Andolan
In 2003, the Supreme Court of India ruled in Union of India v. Azadi Bachao Andolan that the Indian tax department couldn't go behind a Mauritius Tax Residency Certificate. If Mauritius said the company was a tax resident, India had to honour it. The court said: treaty shopping is not illegal; if Parliament doesn't like it, Parliament should renegotiate the treaty.
Parliament eventually did. But it took 13 more years. In the meantime, billions of dollars flowed through Mauritius shell companies into Indian equity markets, and back out tax-free.
The 2003 ruling wasn't wrong — it was a faithful reading of the treaty. The real lesson is how slowly tax-treaty diplomacy moves, and how much capital can move in the gap.
What still works (and what doesn't) — 2026
Doesn't work anymore ✗
Closed routes
Pure Mauritius / Singapore shell for capital gains on Indian shares acquired after 31 Mar 2017. No-substance offshore structures with main purpose being tax. Round-tripping via paper IBCs — POEM + GAAR + KYC norms have closed this almost completely.
Still works ✓
Real-substance routes
Investments via foreign vehicles with genuine commercial substance — real local management, real expenses, real decision-making. Bona fide DTAA benefits where there's no treaty-shopping intent. GIFT City IFSC units get a domestic 80LA holiday. Foreign Portfolio Investors (FPIs) are taxed normally but predictably.
The principle the cycle teaches everyone — not just funds
For an Indian taxpayer thinking about offshore structures (and many founders do, sooner or later), the lesson is:
- Substance is now non-negotiable. Whatever you set up offshore — Singapore, Dubai, the UK — has to actually live there. Real office. Real decision-makers in country. Real books kept locally. The "mailbox + trustee" model is dead.
- Tax-haven gains aren't gains-without-tax anymore. India taxes its tax residents on global income. RBI's LRS rules cap how much you can send abroad. Schedule FA disclosure is mandatory. The exit door is glass.
- Domestic tax-holiday regimes are now the realistic alternative. GIFT City's 80LA gives a 10-of-15-years 100% tax holiday for IFSC units. SEZ Sec 10AA gave similar benefits (now sunsetted). 115BAB gives new manufacturers a flat 15% rate. The government wants the activity onshore — and pays you to put it there.
Tax treaties are written for two things: avoiding double tax, and enabling cross-border commerce. They were not written for postbox companies. India waited 25 years to say so. Now it has.
Quick answers
No — but it's no longer a magic exemption. Real Mauritius funds with substance still operate, and the protocol grandfathered shares acquired before 1 Apr 2017. What's dead is the empty-shell model.
Same story — India-Singapore DTAA was amended in 2017 with phasing similar to Mauritius. Singapore still has commercial benefits (real banking, real fund administration), but no special tax exemption for shares acquired post-2017.
Yes, and many do — but for commercial reasons (cap table, investor familiarity, exit jurisdiction) not tax reasons. Tax-wise, GAAR + POEM + Schedule FA disclosure mean the Singapore holdco has to be a real operating company, not a paper shell. See our advisory section for the practical setup.
For shares acquired by Mauritius-resident sellers on or after 1 Apr 2017: India taxes at its domestic rate — for listed equity 20% STCG / 12.5% LTCG (post 23-Jul-24). Mauritius typically doesn't add a separate domestic capital gains tax, so there's no double-taxation issue.
Gujarat International Finance Tec-City, an Indian regulated financial services special zone in Gandhinagar. IFSC units get a 100% income tax deduction under Sec 80LA for 10 of 15 years, full GST exemption, and a separate light-touch regulator (IFSCA). It's India's "domestic Singapore". Many funds have re-domiciled here since 2020.
When you might want help
Two situations: (1) Founders considering a Singapore / GIFT City / Mauritius holdco — we'll map the substance test, POEM, GAAR exposure, and the FEMA/ODI compliance trail. (2) Indian residents who already hold offshore vehicles — Schedule FA disclosure, ITR-2 foreign asset schedule, repatriation planning.
Considering an offshore structure?
We help founders evaluate whether the structure has real commercial substance, what India-side tax exposure remains, and what the disclosure tail looks like. Fixed scope, fixed fee.
"Maurifund Holdings" and the transactions described are composite illustrations drawn from publicly known features of the India–Mauritius treaty era and CBDT analytical reports. No specific person, fund or company is intended.