(1.) This revision is directed against the order of the Tribunal upholding the penalty of Rs. 7, 030 imposed on the assessee under section 12(5) of the Tamil Nadu General Sales Tax Act, 1959. According to the learned counsel for the assessee, section 12(5) has no application to the facts of this case, as the assessing authority in this case has not accepted the turnover returned by the assessee, which is a necessary ingredient for the application of sub-sections (4) and (5) of section 12. What happened in this case was this. The assessee submitted a return showing a taxable turnover of Rs. 95, 741.50. The assessing authority, however, after a check of his accounts, determined the taxable turnover at Rs. 7, 83, 250. The assessing authority, after a check of the books of account of the assessee, found that the assessee had failed to disclose a huge turnover in the A-2 returns, though it found its place in the accounts, with a view to postpone payment of tax legitimately due to the Government. The assessing authority therefore levied a penalty of Rs. 21, 242 under section 12(5) of the Act for the non-disclosure of certain turnover in the A-2 returns, though it was disclosed in the accounts. The matter was taken up in appeal to the Appellate Assistant Commissioner. Before the Appellate Assistant Commissioner the propriety of the levy of penalty under section 12(5)(iii), as also the quantum of penalty was challenged by the assessee. The Appellate Assistant Commissioner however held, that on the facts, the provisions of section 12(5)(iii) stood attracted, but felt that the matter should go back to the assessing authority for determining the quantum of the turnover suppressed for the period from 3rd December, 1979, to 31st March, 1980, having regard to the fact that section 12(5) as amended came into force only on 3rd December, 1979.Aggrieved by the order of the Appellate Assistant Commissioner, the assessee filed an appeal before the Sales Tax Appellate Tribunal. The Tribunal also agreed with the view of the Appellate Assistant Commissioner, that section 12(5) of the Act stood attracted, and that it had rightly been invoked by the assessing authority. The Tribunal, however, chose to fix the penalty at Rs. 7, 030 as against the penalty of Rs. 21, 242 levied by the assessing authority. In this revision, the learned counsel for the assessee contends that section 12(5) cannot be invoked, as that provision will apply only when the turnover returned by the assessee is accepted as correct, and not when the returns are found to be incorrect and assessment is made on the basis of best judgment. It is seen that the assessment was completed on the basis of the turnover figures found in the accounts after rejecting the returns. The assessing authority found that there was discrepancy in the turnover between the book figures and the figures as returned by the assessee. Thus the assessing authority found the return filed by the assessee to be incorrect and accepted the accounts to be correct and proceeded to make a best judgment assessment on the basis of the turnover figures found in the accounts. In view of the circumstances that the assessment was based on the turnover figures found in the accounts, sub-section (4) of section 12 comes into operation. Sub-section (4) of section 12 reads as follows :