Recognizing successes, achieved on the way to European national financial markets integration, modern researchers are trying to develop evalution methods of the financial integration level and its depth. Criteria determination of the financial integration presence and measurement methods of its level is an important task not only for the countries of the European Union (especially new ones), but also for the countries aiming to join the European Union, such as, in particular, the Republic of Moldova. These criteria introduction is necessary to assist in developing further integration policy as well as carrying out theoretical and scientific research.