Duplicate bill books and documentary comparison can justify a reasonable estimate of suppressed turnover and taxable suppressed sales.

Document comparison and surrounding circumstances showed that the checked bills were issued from duplicate bill books rather than the regular sales records, based on differences in handwriting, issuer details, purchaser particulars, date notation, and tax-paid markings. The Allahabad HC noted that these features supported the finding of suppressed transactions and that attempts to later place those bills into the regular books did not displace that conclusion. It also upheld the estimate of suppressed turnover as reasonable and not arbitrary, so the resulting tax liability on suppressed sales was sustained. The argument drawn from a separate issue involving purchases from unregistered dealers was held irrelevant to this dispute.

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Issues: Whether the Tribunal was justified in holding that the three checked bills had been issued from duplicate bill books and in sustaining the estimate of suppressed turnover and tax liability on the suppressed sales.

Analysis: The seized and checked bills were compared with the carbon copies in the regular bill books, and the differences in handwriting, the person issuing the bills, the manner of recording purchasers' names and places, the language of dates, and the notation of tax paid consistently showed that the checked bills were not part of the regular books. The materials supported the finding that duplicate bill books were being used for suppressed transactions and that, when detected, attempts were made to incorporate those bills in the regular books. The estimate of suppressed sales was also found to be reasonable and not arbitrary. The challenge based on the decision concerning admitted purchases from unregistered dealers did not assist the applicant because the present case concerned suppressed sales and unexplained purchases.

Conclusion: The finding that the sales were suppressed and taxable was upheld, and the revision failed.

Ratio Decidendi: Where documentary comparison and surrounding circumstances clearly establish that bills were issued from duplicate books for unrecorded transactions, the Tribunal may sustain a reasonable estimate of suppressed turnover and treat the resulting sales as taxable suppressed sales.

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