Capital stock is the amount of common and preferred shares that a company is authorized to issue, according to its corporate charter. Contributed capital is the amount of money that shareholders invest in a corporation in exchange for newly issued shares of stock.Additional paid-in capital is a component of shareholders' equity that reflects the price investors are willing to pay above the par value of issued stock. Unlike working capital, it uses different accounts in its calculation and reports the relationship as a percentage rather than a dollar amount. Common stock is a component of paid-in capital, which is the total amount received from investors for stock. APIC in the Real World. Sometimes a corporation decides to purchase its own stock in the market. These shares are referred to as treasury stock. That is not a category. Accountant's Assistant chat img.