Anti-evasion tax valuation power upheld where objective satisfaction, enquiry, and hearing safeguards protect against arbitrary use.

Section 19B of the Kerala General Sales Tax Act authorises estimation of value on prevailing market price where undervaluation is adopted to evade tax, and the provision was held constitutionally valid as an anti-evasion taxing machinery measure. The court accepted that the power to levy tax includes ancillary power to prescribe effective collection methods and curb evasion, provided the assessing authority acts on objective materials, conducts an enquiry, and gives the assessee a reasonable opportunity of being heard. On that basis, the discretion under section 19B was not treated as unguided or arbitrary, and the challenge to the notices issued under the Act failed.

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Issues: Whether section 19B of the Kerala General Sales Tax Act, which enables estimation of value on the basis of prevailing market price in cases of undervaluation with a view to evade tax, is constitutionally valid and whether the notices issued under section 17(3) read with section 19B called for interference.

Analysis: The provision was examined as a taxing machinery measure enacted to prevent evasion of tax. The power to levy tax includes the ancillary power to prescribe effective means of collection and to adopt measures to curb evasion. Section 19B was read as containing safeguards: the assessing authority must be satisfied, on objective materials and after enquiry, that undervaluation was adopted with a view to evade tax, and the assessee must be given a reasonable opportunity of being heard. The discretion conferred was therefore not unguided or arbitrary, and the provision was held to operate within the field of legislative competence under the taxing entry.

Conclusion: Section 19B of the Kerala General Sales Tax Act is valid and intra vires, and the challenge to the notices issued under the Act fails.

Final Conclusion: The writ appeal was dismissed and the assessment machinery under section 19B was upheld as a lawful anti-evasion measure.

Ratio Decidendi: A taxing statute may validly confer on the assessing authority a power to estimate value on the basis of prevailing market price for preventing tax evasion, provided the power is conditioned by objective satisfaction, enquiry, and a reasonable opportunity of hearing.

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