Corporations must pay an annual Illinois franchise tax based on the amount of paid-in capital as of the 3rd month before the corporation's anniversary month. Paid-in capital is the cash that a company has received in exchange for its stock shares.Learn how paid-in capital impacts a company's balance sheet. Economic capital is a measure of risk in terms of capital. More specifically, it's the amount of capital that a company (usually in financial services) needs An introductory course intended to help students explore the various fields of economics. Presents brief introductions to various faculty members.