Financing is the activity of obtaining, using and renewing the required capital for the start-up and continuous operation of the enterprise. In order for the company to acquire the necessary capital, it uses various sources and ways of financing. In the process of business and transformation of assets, capital also appears as a right (right of ownership of patents and licenses, right to receivables for unpaid sold products). Capital, whether it's own or acquired from others, is the potential that an enterprise can use to obtain resources in the required forms, types and quantities. A company may also acquire more assets, or assets of greater value, if it has or can dispose of more capital. The company's capital is used to invest in fixed assets and working capital in the amount that it can achieve optimal business results. The aim of the paper is to process financing types: short-term, mid-term and long-term financing, and the importance of funding from the aspect of their sources. In the example of two companies, the paper presents the method of financing and indices of indebtedness and own financing, ie shows how much the funds of the company are financed from others and from their own sources.