There is a strong pressure from investors to report accounting items using fair value concept upon economic boom. The financial crisis period may raise an issue of revival of conservative concepts in financial reporting, e.g. historical costs measurement and application of prudence principle. Conceptual solution of valuation issues need not to come out from current economic situation and it is impossible to change this concept every time when economic conditions tend to change. Unsystematically changes of valuation concepts may conduce to instability of economic system. Research comes out from the analysis of benefits and risks of variant measurement bases upon various periods of economic cycle. There will be examined the applicability of these measurement bases upon the period of economic boom as well as upon financial crisis. Measurement bases will be evaluated from the aspect of information needs of investors, owners and managers. Study therefore pays attention to the interaction of financial and managerial accounting in valuation issues.