Investment environment needs deep investigation as it is the important influence factor on the state economy. Only with the help of real investment it is possible to provide structure reconstruction of the national economic complex of the state, to enhance economic level. That is why investment inflows into economy are necessary, and joint investment institutions became an alternative to the individual investment. The state that has proper conditions to the joint investment institutions gets effective mechanism of stock market development, which stimulated capital distribution within economic branches.
Interbank market which plays an important role providing normal operating of money-market conditions is analysed. It reflects the mechanism of state authorities influence on commercial banks activity, the influence on money, credit, currency and the whole economic systems state.