This dissertation documents the quality of financial accounting information in a transition economy, the Czech Republic. High quality accounting information decreases the risks for investors, promotes investment activities and increases the ability of companies to raise funds at a reasonable cost of capital. Countries with high quality accounting information have a comparative advantage in attracting financial capital. Transition economies - i.e. countries switching from centrally planned to market economies - are typically in need of capital. Therefore a new accounting regulation had to be developed that would satisfy the needs of new private investors. The quality of financial accounting information depends on accounting quality (an outcome of applied accounting principles) and disclosure quality (an outcome of the amount and characteristics of information provided in the financial statements). Accounting quality is measured as the value relevance of accounting numbers and certain attributes of earnings which promote the value relevance. Disclosure quality is measured in terms of mandatory disclosure requirements, actual disclosures of companies (i.e. the level of compliance with legislation) and additional information provided voluntarily by the companies. Sweden is used as a benchmark for well-developed market economy and the quality of financial accounting information in the Czech Republic is systematically compared to the quality of Swedish financial accounting information throughout the dissertation. The results show that both accounting and disclosure quality in the Czech Republic were inferior in the beginning of the transition period. Over time, the value relevance of accounting numbers has however improved. The change in the value relevance may be attributed in particular to improvements in disclosure quality. The key factors behind the development were improved accounting legislation and control mechanisms, accompanied by changes in the business climate including higher sophistication of both the producers and users of the financial information. / Diss. Stockholm : Handelshögskolan, 2009