International monetary system-enshrined in international agreements, a form of organization of monetary and financial relations, which operate independently or serving the international movement of goods and factors of production[7].

Monetary and financial system is a necessary step to promote international trade in goods, financial instruments and the movement of factors of production. It consists of two elements. Currency components of the system is the national currency, the terms of their mutual convertibility and circulation, exchange rate parity, exchange rates and national and international mechanisms of its regulation.

Financial elements of the system are the international financial markets and trading mechanisms to specific financial instruments – currency, securities, and loans.

Independent element of the international financial system is the international settlements, serving as the movement of goods and factors of production and financial instruments.

International financing mechanisms are key elements of macroeconomic adjustment, which is carried out in the country's open economy.

Currency is divided according to its membership to:

– the national currency – legal tender in the issuing of countries;

– foreign currency – legal tender in other countries, used in that country.

Classifications can be varied for different characters, in order to achieve the objectives of the study relevant is the following: reserve currency – the currency in which the state held its liquid international reserves used to cover the negative balance of payments.

Generally accepted in the world currency, which is accumulated by central banks in foreign exchange reserves. It serves as an investment asset, is a method of determining the exchange parity used as a tool of foreign exchange intervention, if necessary, as well as for the central bank for international settlements.

The most important characteristic is the degree of currency convertibility them – the ability of residents and non-free and unrestricted exchange and use in transactions with real financial assets.

From the standpoint of balance of payments is convertible for current transactions, capital transactions and complete, and in terms of residents – domestic and foreign.

The classification of exchange rate systems based on what is recognized as a reserve asset, that is, with the help of an asset can be settled by the imbalances in international payments. By this criterion standard monetary systems are divided into gold, gold exchange, devising. During different periods of history such assets were gold, the dollar convertible into gold at a fixed rate, any currency accepted for international payments, but above all, freely usable currencies.

The gold standard was based on the formalization of the countries of the gold content per unit of domestic currency liabilities of central banks buy and sell domestic currency in exchange for gold. Gold exchange standard based on the officially established fixed parities of currencies against the U.S. dollar, which in turn was convertible into gold at a fixed rate. The main features of the standard devising lies in the fact that countries can use any system of exchange rates of their choice – a fixed or floating, established unilaterally or through multilateral agreements. The IMF has the authority to oversee the development of exchange rates and arrangements for their establishment. Abolished the official price of gold, and eliminated its role as the official means of payment between the IMF and its members. As an additional reserve asset, special drawing rights (SDRs).