Profit estimation under section 145(1) and industrial deduction eligibility turned on inadequate records and construction activity treated as manufacturing.

Where books are audited but expense vouchers and work-in-progress records are deficient, profit may be estimated under the proviso to section 145(1) of the Income-tax Act; on those facts, a 12.5% net profit rate on contract receipts was upheld before depreciation. The assessee's construction activity was also treated as involving a manufacturing process, so the claimed industrial incentive deductions were allowed under section 80HH for assessment year 1985-86 and under sections 80HH and 80-I for assessment year 1986-87.

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Issues: (i) Whether the net profit rate of 12.5% on contract receipts was correctly applied after invoking the proviso to Section 145(1) of the Income-tax Act, 1961. (ii) Whether the assessee was entitled to deductions under Section 80HH of the Income-tax Act, 1961 and Section 80-I of the Income-tax Act, 1961.

Issue (i): Whether the net profit rate of 12.5% on contract receipts was correctly applied after invoking the proviso to Section 145(1) of the Income-tax Act, 1961.

Analysis: The books of account were maintained and audited, but the expenses were not supported by vouchers and the details of work-in-progress were not maintained. The tax authorities were therefore justified in applying the proviso to Section 145(1). In view of the rate adopted in the preceding year and the assessee's own shown profit for the later year, the adoption of a 12.5% net profit rate before depreciation was found .

Conclusion: The application of the 12.5% net profit rate was upheld and was against the assessee.

Issue (ii): Whether the assessee was entitled to deductions under Section 80HH of the Income-tax Act, 1961 and Section 80-I of the Income-tax Act, 1961.

Analysis: The assessee was engaged in construction of overhead water tanks, involving construction of piles. The construction of piles was treated as a process of manufacture, bringing the activity within the scope of the incentive deductions claimed.

Conclusion: The assessee was held entitled to deductions under Section 80HH for assessment year 1985-86 and under Sections 80HH and 80-I for assessment year 1986-87.

Final Conclusion: The appeal succeeded only in relation to the allowance of statutory deductions, while the adoption of the net profit rate was sustained.

Ratio Decidendi: Where accounts are inadequately supported by vouchers and work-in-progress details, the profit rate may be estimated under the proviso to Section 145(1) of the Income-tax Act, 1961, and construction activity involving a manufacturing process can qualify for the industrial deduction provisions.

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