Multilateral Instrument incorporation requires treaty notification before the Principal Purpose Test can restrict aircraft-leasing treaty relief.
Articles 6 and 7 of the Multilateral Instrument require incorporation into domestic law through a specific notification under section 90(1) before they can modify India-Ireland DTAA benefits. Without such incorporation, the Principal Purpose Test cannot restrict treaty relief. Valid tax residence, commercial substance and cross-border aircraft leasing do not, by themselves, establish a principal purpose contrary to the treaty's object and purpose. Dry-lease rentals for aircraft used in international traffic fall within Article 8(1) where the lessor operates from Ireland and the aircraft is not at its disposal as a fixed place of business; standard lessor protections do not create a permanent establishment. Retained ownership and repossession rights indicate an operating lease, so rentals are not interest income.
Issues: (i) Whether Articles 6 and 7 of the Multilateral Instrument could be invoked to deny India-Ireland DTAA benefits without a specific notification under section 90(1); (ii) Whether the claimed treaty benefit for aircraft leasing was contrary to treaty object and purpose under the Principal Purpose Test; (iii) Whether dry-lease rental income was covered by Article 8(1) and the leased aircraft constituted a permanent establishment in India; and (iv) Whether the aircraft leases were finance leases yielding interest income.
Issue (i): Whether Articles 6 and 7 of the Multilateral Instrument could be invoked to deny India-Ireland DTAA benefits without a specific notification under section 90(1).
Analysis: Treaty modifications under the Multilateral Instrument require incorporation into domestic law through a specific notification under section 90(1). In the absence of a notification incorporating Articles 6 and 7 into the India-Ireland DTAA, the Principal Purpose Test was not enforceable to restrict treaty benefits.
Conclusion: In favour of the assessee: Articles 6 and 7 of the Multilateral Instrument could not be invoked to deny India-Ireland DTAA benefits.
Issue (ii): Whether the claimed treaty benefit for aircraft leasing was contrary to treaty object and purpose under the Principal Purpose Test.
Analysis: The valid tax-residency status, commercial substance, and cross-border aircraft-leasing activity did not establish that securing treaty relief was a principal purpose contrary to the treaty's object and purpose. The treaty's allocation of taxing rights for aircraft-leasing income was intended to confer the claimed relief.
Conclusion: In favour of the assessee: the treaty benefit for aircraft leasing was consistent with the object and purpose of the India-Ireland DTAA and could not be denied under the Principal Purpose Test.
Issue (iii): Whether dry-lease rental income was covered by Article 8(1) and the leased aircraft constituted a permanent establishment in India.
Analysis: The dry-leasing business was undertaken from Ireland, while operational control, deployment, routing, scheduling, and crewing remained with the Indian lessee. Standard lessor rights of inspection, maintenance oversight, repossession, and return did not place the aircraft at the lessor's disposal as a fixed place of business. Aircraft rental used in international traffic fell within Article 8(1), which specifically governs such income.
Conclusion: In favour of the assessee: no permanent establishment arose in India, and the dry-lease rentals were covered by Article 8(1) and taxable only in Ireland.
Issue (iv): Whether the aircraft leases were finance leases yielding interest income.
Analysis: Ownership remained with the lessor, the lessee acquired no ownership rights, the aircraft was returnable at the end of the term, and repossession rights subsisted upon default. These features established an operating lease rather than a transaction transferring ownership risks and rewards; periodic rentals did not alter that character.
Conclusion: In favour of the assessee: the arrangements were dry operating leases, and the rentals were not interest income taxable under section 115A or Article 11.
Final Conclusion: The assessment of the aircraft lease rentals in India could not be sustained under the applicable treaty framework.