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1、, 2007 Thomson South-Western,Saving, Investment, and the Financial System,The financial system consists of the group of institutions in the economy that help to match one persons saving with another persons investment. It moves the economys scarce resources from savers to borrowers.,FINANCIAL INSTIT
2、UTIONS IN THE U.S. ECONOMY,The financial system is made up of financial institutions that coordinate the actions of savers and borrowers. Financial institutions can be grouped into two different categories: Financial markets Financial intermediaries,FINANCIAL INSTITUTIONS IN THE U.S. ECONOMY,Financi
3、al Markets Stock Market Bond Market Financial Intermediaries Banks Mutual Funds,FINANCIAL INSTITUTIONS IN THE U.S. ECONOMY,Financial markets are the institutions through which savers can directly provide funds to borrowers. Financial intermediaries are financial institutions through which savers can
4、 indirectly provide funds to borrowers.,Financial Markets,The Bond Market A bond is a certificate of indebtedness that specifies obligations of the borrower to the holder of the bond. Characteristics of a Bond Term: The length of time until the bond matures. Credit Risk: The probability that the bor
5、rower will fail to pay some of the interest or principal. Tax Treatment: The way in which the tax laws treat the interest on the bond. Municipal bonds are federal tax exempt.,Financial Markets,The Stock Market Stock represents a claim to partial ownership in a firm and is therefore, a claim to the p
6、rofits that the firm makes. The sale of stock to raise money is called equity financing. Compared to bonds, stocks offer both higher risk and potentially higher returns. The most important stock exchanges in the United States are the New York Stock Exchange, the American Stock Exchange, and NASDAQ.,
7、Financial Markets,The Stock Market Most newspaper stock tables provide the following information: Price (of a share) Volume (number of shares sold) Dividend (profits paid to stockholders) Price-earnings ratio,Financial Intermediaries,Financial intermediaries are financial institutions through which
8、savers can indirectly provide funds to borrowers.,Financial Intermediaries,Banks take deposits from people who want to save and use the deposits to make loans to people who want to borrow. pay depositors interest on their deposits and charge borrowers slightly higher interest on their loans.,Financi
9、al Intermediaries,Banks help create a medium of exchange by allowing people to write checks against their deposits. A medium of exchange is an item that people can easily use to engage in transactions. facilitate the purchases of goods and services.,Financial Intermediaries,Mutual Funds A mutual fun
10、d is an institution that sells shares to the public and uses the proceeds to buy a portfolio, of various types of stocks, bonds, or both. Mutual funds allow people with small amounts of money to easily diversify.,Financial Intermediaries,Other Financial Institutions Credit unions Pension funds Insur
11、ance companies Loan sharks,SAVING AND INVESTMENT IN THE NATIONAL INCOME ACCOUNTS,Recall that GDP is both total income in an economy and total expenditure on the economys output of goods and services: Y = C + I + G + NX,Some Important Identities,Assume a closed economy one that does not engage in int
12、ernational trade: Y = C + I + G,Some Important Identities,Now, subtract C and G from both sides of the equation: Y C G = I The left side of the equation is the total income in the economy after paying for consumption and government purchases and is called national saving, or just saving (S).,Some Im
13、portant Identities,Substituting S for Y C G, the equation can be written as: S = I,Some Important Identities,National saving, or saving, is equal to: S = I S = Y C G S = (Y T C) + (T G),The Meaning of Saving and Investment,National Saving National saving is the total income in the economy that remai
14、ns after paying for consumption and government purchases. Private Saving Private saving is the amount of income that households have left after paying their taxes and paying for their consumption. Private saving = (Y T C),The Meaning of Saving and Investment,Public Saving Public saving is the amount
15、 of tax revenue that the government has left after paying for its spending. Public saving = (T G),The Meaning of Saving and Investment,Surplus and Deficit If T G, the government runs a budget surplus because it receives more money than it spends. The surplus of T - G represents public saving. If G T
16、, the government runs a budget deficit because it spends more money than it receives in tax revenue.,The Meaning of Saving and Investment,For the economy as a whole, saving must be equal to investment. S = I,THE MARKET FOR LOANABLE FUNDS,Financial markets coordinate the economys saving and investmen
17、t in the market for loanable funds. The market for loanable funds is the market in which those who want to save supply funds and those who want to borrow to invest demand funds.,Supply and Demand for Loanable Funds,Loanable funds refers to all income that people have chosen to save and lend out, rat
18、her than use for their own consumption. The supply of loanable funds comes from people who have extra income they want to save and lend out. The demand for loanable funds comes from households and firms that wish to borrow to make investments.,Supply and Demand for Loanable Funds,Interest rate the p
19、rice of the loan the amount that borrowers pay for loans and the amount that lenders receive on their saving in the market for loanable funds, the real interest rate.,Supply and Demand for Loanable Funds,Financial markets work much like other markets in the economy. The equilibrium of the supply and
20、 demand for loanable funds determines the real interest rate.,Figure 1 The Market for Loanable Funds,Loanable Funds,(in billions of dollars),0,Interest,Rate,Supply and Demand for Loanable Funds,Government Policies That Affect Saving and Investment Taxes and saving Taxes and investment Government bud
21、get deficits and surpluses,Policy 1: Saving Incentives,Taxes on interest income substantially reduce the future payoff from current saving and, as a result, reduce the incentive to save. A tax decrease increases the incentive for households to save at any given interest rate. The supply of loanable
22、funds curve shifts right. The equilibrium interest rate decreases. The quantity demanded for loanable funds increases.,Figure 2 An Increase in the Supply of Loanable Funds,Loanable Funds,(in billions of dollars),0,Interest,Rate,Policy 1: Saving Incentives,If a change in tax law encourages greater sa
23、ving, the result will be lower interest rates and greater investment.,Policy 2: Investment Incentives,An investment tax credit increases the incentive to borrow. Increases the demand for loanable funds. Shifts the demand curve to the right. Results in a higher interest rate and a greater quantity sa
24、ved.,Policy 2: Investment Incentives,If a change in tax laws encourages greater investment, the result will be higher interest rates and greater saving.,Figure 3 Investment Incentives Increase the Demand for Loanable Funds,Loanable Funds,(in billions of dollars),0,Interest,Rate,Policy 3: Government
25、Budget Deficits and Surpluses,When the government spends more than it receives in tax revenues, the short fall is called the budget deficit. The accumulation of past budget deficits is called the government debt.,Policy 3: Government Budget Deficits and Surpluses,Government borrowing to finance its
26、budget deficit reduces the supply of loanable funds available to finance investment by households and firms. This fall in investment is referred to as crowding out. The deficit borrowing crowds out private borrowers who are trying to finance investments.,Policy 3: Government Budget Deficits and Surp
27、luses,A budget deficit decreases the supply of loanable funds. Shifts the supply curve to the left. Increases the equilibrium interest rate. Reduces the equilibrium quantity of loanable funds.,Figure 4: The Effect of a Government Budget Deficit,Loanable Funds,(in billions of dollars),0,Interest,Rate
28、,Policy 3: Government Budget Deficits and Surpluses,When government reduces national saving by running a deficit, the interest rate rises and investment falls. A budget surplus increases the supply of loanable funds, reduces the interest rate, and stimulates investment.,Figure 5 The U.S. Government
29、Debt,Percent,of GDP,1790,1810,1830,1850,1870,1890,1910,1930,1950,1970,1990,2010,0,20,40,60,80,100,120,The U.S. financial system is made up of financial institutions such as the bond market, the stock market, banks, and mutual funds. All these institutions act to direct the resources of households wh
30、o want to save some of their income into the hands of households and firms who want to borrow.,National income accounting identities reveal some important relationships among macroeconomic variables. In particular, in a closed economy, national saving must equal investment. Financial institutions at
31、tempt to match one persons saving with another persons investment.,The interest rate is determined by the supply and demand for loanable funds. The supply of loanable funds comes from households who want to save some of their income. The demand for loanable funds comes from households and firms who
32、want to borrow for investment.,National saving equals private saving plus public saving. A government budget deficit represents negative public saving and, therefore, reduces national saving and the supply of loanable funds. When a government budget deficit crowds out investment, it reduces the growth of productivity and GDP.,