Money creation is the process by which the money supply of a country, or of an economic or monetary region, is increased. In most modern economies, most of the money supply is in the form of bank deposits. Central banks monitor the amount of money in the economy by measuring the so-called monetary aggregates.governments do not create money; the central bank does. But with the central bank's cooperation, the government can in effect finance itself by money creation. It can issue bonds and ask the central bank to buy them. The central bank then pays the government with money it creates, and the government in turn uses that money to finance the deficit. This process is called debt monetization.the central bank does not have the option to monetize any of the outstanding government debt or newly issued government debt...s long as the central bank has a mandate to maintain a short-term interest rate target, the size of its purchases and sales of government debt are not discretionary. The central bank's lack of control over the quantity of reserves underscores the impossibility of debt monetization. The central bank is unable to monetize the government debt by purchasing government securities at will because to do so would cause the short-term target rate to fall to zero or to any support rate that it might have in place for excess reserves. Money creation is the process by which the money supply of a country, or of an economic or monetary region, is increased. In most modern economies, most of the money supply is in the form of bank deposits. Central banks monitor the amount of money in the economy by measuring the so-called monetary aggregates. The term 'money supply' commonly denotes the total, safe, financial assets that households and businesses can use to make payments or to hold as short-term investment. The money supply is measured using the so-called 'monetary aggregates', defined in accordance to their respective level of liquidity: In the United States, for example, M0 for currency in circulation; M1 for M0 plus transaction deposits at depository institutions, such as drawing accounts at banks; M2 for M1 plus savings deposits, small-denomination time deposits, and retail money-market mutual fund shares. The money supply is understood to increase through activities by government authorities, by the central bank of the nation, and by commercial banks. The money supply is mostly in the form of bank deposits. State spending is part of the state's fiscal policy. Deficit spending involves the state spending into the economy more than it receives (in taxes and other payments) within a certain period of time, typically the budget year. Deficit spending increases the money supply. The extent and the timing of budget deficits is disputed among schools of economic analysis. The mainstream view is that net spending by the public sector is inflationary in so far as it is 'financed' by the banking system, including the central bank, and not by the sale of state debt to the public. The existence itself of budget deficits is generally considered inflationary by mainstream economics, so policies are prescribed for the lowering of the deficit, while heterodox economists such as Post-Keynesians treat deficit spending as 'simply' a fiscal policy option.