India and Mauritius have updated their bilateral tax agreement to incorporate a treaty-level Principal Purpose Test. The official notification for this revised double taxation avoidance agreement occurred on October 13, and the provisions became effective on August 10, 2026. This regulatory update places increased focus on the underlying commercial substance and core objectives of financial transactions when tax administrators review applications for treaty relief.
Under the updated framework, tax authorities can deny lower tax rates provided by the pact if it is reasonable to conclude that securing that benefit served as one of the primary drivers behind a transaction or business arrangement. However, the update does not render every investment routed through Mauritius or every tax advantage automatically abusive. Furthermore, investments established prior to April 1, 2017, remain protected under grandfathering rules and stay outside the reach of this new test.
Key numbers
- Notification date: October 13, 2026
- Effective date: August 10, 2026
- Grandfather date: April 1, 2017
What a board might note
- How do current holding structures and operational setups in Mauritius align with the commercial substance requirements evaluated by tax authorities?
- What documentation currently supports the decision-making processes, governance, and business rationale for existing investments established after the April 2017 cutoff date?
- How might the Principal Purpose Test impact upcoming dividend, interest, and income flows relative to legacy structures?
Source: The Hindu BusinessLine Economy, 14 October 2026. This is a summary of a news report, published as general information. It is not legal, tax or investment advice.
This article is journalism and commentary. It is not a recommendation to buy or sell any security, and it is not professional advice. Read the full disclaimer.
