305. A shareholder of a corporation who receives after 1971 a stock dividend, in respect of a share owned by him of the capital stock of the corporation, is deemed to acquire the share received by him at a cost equal to the aggregate of(a) where the stock dividend is a dividend, the amount by which the amount of the stock dividend exceeds the amount of the dividend that the shareholder may deduct under section 738 in computing the shareholder’s taxable income, except any portion of the dividend that, if paid as a separate dividend, would not be subject to section 308.1 because the capital gain referred to in that section could reasonably be considered not to be attributable to anything other than income earned or realized by a corporation after 31 December 1971 and before the safe-income determination time, in relation to the transaction or event or series of transactions or events as part of which the dividend was received;
(a.1) where the stock dividend is not a dividend, nil, and
(b) the amount included under section 112.1 in computing the shareholder’s income in respect of the stock dividend.