In a company, tied-up capital costs during performance are an enormous challenge for the sustainable control of the company. The biggest problem for every company analyst, investor or controller is the correct determination of the company-specific cost of capital. This specialist book, written by Felix Huebner, presents a new quantitative method for determining the WACC-Weighted Average Cost of Capital (WACC) and its long-term sustainable optimisation, which can be applied professionally in any company, regardless of sector. Presented clearly and pragmatically, it is a business management work for further training in financial business analysis. The target groups are management consultants, bank analysts, corporate investors, auditors and private equity specialists.