Financial structure is the way in which a company finances its operations through various sources of funds such as debt, equity and other financial instruments. It is also known as capital structure and can influence the value of a company, as well as its risk and return profile. Financial structure can be determined by a company's shareholders, creditors or both.

Understanding financial structure is an important part of the business cycle, since it affects the company's ability to raise capital, execute on its growth plans, and ultimately meet its financial goals. It is also critical in determining a company's risk-reward profile and capital cost of capital.

A company's debt-to-equity ratio, which reflects the degree to which debt is used to finance its operations, is a key measure of financial structure. A higher debt-equity ratio indicates greater reliance on borrowing to finance its operations. On the other hand, a lower debt-to-equity ratio indicates a greater reliance on equity capital. Generally, companies use more debt capital when they expect faster growth.

Companies also fund their operations through various forms of debt. Some types of debt are secured, which means that the company's assets back the debt. Other types of debt are unsecured, meaning that there are no assets to back the debt. The cost and terms of these types of debt vary. For example, secured debt often carries lower interest rates because it is backed by the company's assets.

Finally, a company's financial structure may include various other financial instruments. These instruments include derivatives, futures, options and swaps. These instruments allow companies to create instruments to hedge their risks, such as interest rate changes or currency fluctuations.

In summary, financial structure plays a critical role in determining the capital cost of capital and the risk reward profile of a company. It is important for companies to understand the various sources of funds and types of debt available and to make sure the right mix of capital is used to finance the company's operations. Investors should also look closely at a company's financial structure in order to understand the company's risk-reward profile.