7702. Definitions. 7703. Corporations. 7704. Articles of incorporation. 7705. Capital stock. 7706.Section 155.28 - Capital stock value methods-fixed formula (a)Prior methods inapplicable. Capital stock is the number of common and preferred shares that a company is authorized to issue, and is recorded in shareholders' equity. This method uses the current earnings, the 5 year average earnings and stockholder equity to determine the capital stock value. Overview. The bank and trust company shares tax is imposed on every bank and trust company having capital stock and doing business in Pennsylvania.