Treaty classification of receipts controls taxability; SDR variation and interest fail, while supervision fee is business profit with deduction.

Where a tax treaty applies, the character of a receipt must be determined under the treaty first, and an SDR variation linked to delayed instalment payment for design and engineering charges does not become separately taxable as fees for technical services if the underlying receipt is outside that charge. The Tribunal also treated interest under section 234B as consequential and held it not leviable once the primary addition failed. Supervision fee for erection and commissioning work was, however, treated as business profits because the non-resident rendered the activity in India and had a permanent establishment there, and related expenditure was allowed as deductible.

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Issues: (i) Whether SDR variation received on delayed instalment payment for design and engineering charges was taxable as fees for technical services under section 9(1)(vii) of the Income-tax Act, 1961, or was excluded by the applicable double taxation avoidance agreement. (ii) Whether interest under section 234B of the Income-tax Act, 1961 was leviable on the assessee. (iii) Whether supervision fee received for erection and commissioning work was assessable as fees for technical services or as business profits, and whether related expenditure was allowable.

Issue (i): Whether SDR variation received on delayed instalment payment for design and engineering charges was taxable as fees for technical services under section 9(1)(vii) of the Income-tax Act, 1961, or was excluded by the applicable double taxation avoidance agreement.

Analysis: The receipt was held to arise from the import of drawings, designs and technical documents, which were treated as partaking the character of plant and machinery and not as consideration for technical services. The Tribunal also held that the SDR variation followed the character of the underlying receipt and, once the principal receipt was outside the charge to tax as fees for technical services, the variation could not be separately brought to tax on that footing. The agreement for avoidance of double taxation was applied as overriding the domestic charging provision where the two were in conflict.

Conclusion: The issue was decided in favour of the assessee; the SDR variation was held not taxable.

Issue (ii): Whether interest under section 234B of the Income-tax Act, 1961 was leviable on the assessee.

Analysis: The Tribunal treated the issue as consequential to its finding that the underlying income was not taxable in the manner adopted by the Revenue. In that view, the levy of interest could not survive.

Conclusion: The issue was decided in favour of the assessee; interest under section 234B was not leviable.

Issue (iii): Whether supervision fee received for erection and commissioning work was assessable as fees for technical services or as business profits, and whether related expenditure was allowable.

Analysis: The Tribunal held that the supervision activity was rendered in India and that the non-resident had a permanent establishment in India. On that basis, the receipt was treated as business income under the applicable treaty framework, and deduction for expenditure incurred in earning the income was allowed. The view taken by the lower authorities that the entire receipt was taxable as fees for technical services without allowance of expenditure was rejected.

Conclusion: The issue was decided in favour of the assessee; the supervision receipt was held taxable as business profits with deduction of expenditure.

Final Conclusion: The assessee succeeded on the substantive taxability issues, while the Revenue's challenges, including those relating to interest, failed.

Ratio Decidendi: Where a treaty applies, the character of a receipt must be determined under the treaty first, and if the underlying payment is not chargeable as fees for technical services, an ancillary SDR variation following that payment does not become taxable on a different basis; consequential interest cannot survive when the primary addition fails.

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