Rejection of unreliable accounts and profit estimation upheld where books were defective and no adverse undisclosed material was used.

The proviso to section 13 of the Income-tax Act may be invoked where the assessee's accounts are unreliable and true profits cannot properly be deduced from them. Defects such as non-production of vouchers, absence of a quantitative tally, unexplained cheques and purchases, and inadequate books justified rejection of the accounts and estimation of profits on relevant material. Ancillary reference to profit rates in other cases did not, by itself, breach natural justice because no undisclosed adverse material was used as substantive evidence against the assessee. The stated ratio is that unreliable accounts permit estimation, while mere supporting reference to comparable cases does not create denial of opportunity.

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Issues: (i) Whether the proviso to section 13 of the Income-tax Act applied on the facts so as to justify rejection of the assessee's books and estimation of profits; (ii) Whether reliance on comparable profit rates in other cases without separate disclosure to the assessee violated the principles of natural justice.

Issue (i): Whether the proviso to section 13 of the Income-tax Act applied on the facts so as to justify rejection of the assessee's books and estimation of profits.

Analysis: The proviso to section 13 could be invoked where no regular method of accounting was employed or where, although a method was employed, income, profits and gains could not properly be deduced from it. The accounts were rejected for substantive defects, including non-production of vouchers, absence of a quantitative tally, unexplained cheques and purchases, and inadequacy of the books as a reliable basis for determining true profits. In such circumstances, the taxing authorities were entitled to discard the accounts and make an estimate on relevant material.

Conclusion: The proviso to section 13 was rightly applied and the estimate of profits was upheld, against the assessee.

Issue (ii): Whether reliance on comparable profit rates in other cases without separate disclosure to the assessee violated the principles of natural justice.

Analysis: The references to profit rates in other cases were not the foundation of the conclusion but only ancillary support for the estimate already reached on the basis of defects in the assessee's own accounts. No undisclosed material supplied by another person was used as substantive evidence against the assessee, and the circumstances were therefore unlike a case of denial of opportunity to meet adverse material.

Conclusion: There was no violation of natural justice, against the assessee.

Final Conclusion: The rejection of the books and the estimation of profits under section 13 were sustained, and the appeals failed in their entirety.

Ratio Decidendi: Where the accounts are found to be unreliable because the profits cannot properly be deduced from them, the authority may invoke the proviso to section 13 and estimate income on relevant material; mere ancillary reference to profit rates in other cases does not amount to denial of natural justice unless undisclosed adverse material is used as the basis of decision.

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