A balance sheet  is a financial report that shows the value of a company's assets, liabilities, and owner's equity at a specific period of time, usually at the end of an accounting period, such as a quarter or a year. An asset is anything that can be sold for value. A liability is an obligation that must eventually be paid, and, hence, it is a claim on assets. The owner's equity in a bank is often referred to as bank capital, which is what is left when all assets have been sold and all liabilities have been paid. The relationship of the assets, liabilities, and owner's equity of a bank is shown by the following equation: