1. Introduction: Thinking Like an Economist CHAPTER 12 The peculiar essence of our banking system is an unprecedented trust between man and man; and when that trust is much weakened by hidden causes, a small accident may greatly hurt it, and a great accident for a moment may almost destroy it. — Walter Bagehot The Financial Sector and the Economy Copyright © 2013 by The McGraw-Hill Companies, Inc. All rights reserved. McGraw-Hill/Irwin

2. 112 The Financial Sector and the Economy 12-2 The Financial Sector and the Economy  The financial sector is central to almost all macroeconomic debates  The real sector (aka “Main St.”) is the market for the production and exchange of goods and services  The financial sector (aka “Wall St.”)is the market for the creation and exchange of financial assets Financial assets include money, stocks, and bonds Plays a central role in organizing and coordinating our economy

3. 112 The Financial Sector and the Economy 12-3

4. 112 The Financial Sector and the Economy 12-4 Why is the Financial Sector Important to Macro?  For every real transaction, there is a financial transaction that mirrors it  The financial sector channels savings back into spending  For every financial asset, there is a corresponding financial liability  Financial assets are assets such as stocks or bonds, whose benefit to the owner depends on the issuer of the asset meeting certain obligations  Financial liabilities are obligations by the issuer of the financial asset

5. 112 The Financial Sector and the Economy 12-5 The Financial Sector as a Conduit for Savings Financial institutions channel savings back into the spending stream as loans  Saving is outflows from the spending stream from government, households, and corporations Savings deposits, bonds, stocks, life insurance  Loans are made to government, households, and corporations Business loans, venture capital loans, construction loans, investment loans

6. 112 The Financial Sector and the Economy 12-6 The Financial Sector as a Conduit for Savings FINANCIAL SECTOR OutflowSavingsLoansInflow GOVERNMENT HOUSEHOLDS BUSINESS GOVERNMENT HOUSEHOLDS BUSINESS Financial institutions channel saving (outflows from the spending stream) back into the spending stream as loans 13-6

7. 112 The Financial Sector and the Economy 12-7 The U.S. Central Bank: The Fed  The Federal Reserve Bank (the Fed) is the U.S. central bank Federal Reserve notes are liabilities of the Fed that serve as cash in the U.S.  A bank is a financial institution whose primary function is accepting deposits for, and lending money to, individuals and firms  Individuals’ deposits in savings and checking accounts serve the same purpose as does currency and are also considered money

8. 112 The Financial Sector and the Economy 12-8 The Definition and Functions of Money  Money is a highly liquid financial asset that serves as a: Medium of exchange Unit of account Store of wealth  Liquid means to be easily changeable into another asset or good  Money is a financial asset that makes the real economy function smoothly

9. 112 The Financial Sector and the Economy 12-9 Alternative Measures of Money  Economists have developed different measures of money  Two are M 1 and M 2 M 1 is a measure of the money supply; it consists of currency in the hands of the public plus checking accounts and traveler’s checks M 2 is a measure of the money supply; it consists of M 1 plus other relatively liquid assets (savings accounts, money market accounts, short term Certificates of Deposits, or CDs)

10. 112 The Financial Sector and the Economy 12-10 The Process of Money Creation  Reserves are currency and deposits a bank keeps on hand or at the Fed or central bank, to manage the normal cash inflows and outflows  The reserve ratio is the ratio of reserves to deposits a bank keeps as a reserve against cash withdrawals  Banks can keep more reserves: excess reserve ratio  Reserve ratio = required reserve ratio + excess reserve ratio

11. 112 The Financial Sector and the Economy 12-11 Banks and the Creation of Money The first step in the creation of money  The Fed creates money by simply printing currency Currency is a financial asset to the bearer and a liability to the Fed  The bearer deposits the currency in a checking account at the bank The form of money has changed from currency to a bank deposit

12. 112 The Financial Sector and the Economy 12-12 Banks and the Creation of Money The second step in the creation of money  The bank lends a fraction of the deposit  The amount of money has expanded: Initial deposit + new loan  The amount of money is multiplied

13. 112 The Financial Sector and the Economy 12-13 Calculating the Money Multiplier We will call the ratio 1/r the simple money multiplier The simple money multiplier is the measure of the amount of money ultimately created per dollar deposited in the banking system, when people hold no currency It tells us how much money will ultimately be created by the banking system from an initial inflow of money The higher the reserve ratio, the smaller the money multiplier, and the less money will be created 13-13

14. 112 The Financial Sector and the Economy 12-14 Determining How Many Demand Deposits Will Be Created To find the total amount of deposits that will be created, multiply the original deposit by 1/r, where r is the reserve ratio If the original deposit is $100 and the reserve ratio is 10 percent (0.1), the amount of money ultimately created is: New money created = $1000 – $100 = $900 $100 x 1/0.1 = $1000 13-14

15. 112 The Financial Sector and the Economy 12-15 Calculating the Money Multiplier when People Hold Currency The simple money multiplier reflects the assumption that only banks hold currency When firms and individuals hold currency, the money multiplier in the economy is: Where r is the percentage of deposits banks hold in reserve and c is the ratio of money people hold in currency to the money they hold as deposits (1 + c) (r + c) 13-15

16. 112 The Financial Sector and the Economy 12-16 3 Motives for Holding Money (as formulated by Keynes) The transactions motive is the need to hold money for spending The precautionary motive is holding money for unexpected expenses and impulse buying The speculative motive is holding cash to avoid holding financial assets whose prices are falling

17. 112 The Financial Sector and the Economy 12-17 The Role of Interest Rates in the Financial Sector  The interest rate is the price paid for use of a financial asset  The long-term interest rate is the price paid for financial assets with long maturities The market for long-term financial assets is called the loanable funds market  The short-term interest rate is the price paid for financial assets with short maturities Short-term financial assets are called money

18. 112 The Financial Sector and the Economy 12-18 Equilibrium in the Money Market The demand for money is downward-sloping: as the interest rate falls the cost of holding money falls When interest rates rise, bonds and other financial assets become more attractive, so you hold more financial assets and less money Interest Rate Q of Money S i0i0 D 13-18

19. 112 The Financial Sector and the Economy 12-19 Market for Loanable Funds The long-term interest rate is determined in the market for loanable funds At equilibrium, the quantity of loanable funds supplied (savings) is equal to the quantity of loanable funds demanded (investment) Interest Rate Q of Loanable Funds Q S 4% = Savings D = Investment 13-19

20. 112 The Financial Sector and the Economy 12-20 The Many Interest Rates in the Economy  The economy doesn’t have just a single interest rate; it has many  Each financial asset will have an implicit interest rate associated with it  In a multiple-asset market, the potential for the interest rate in the loanable funds market to differ from the interest rate in the market for a particular asset is large The result can be a financial asset market bubble

21. 112 The Financial Sector and the Economy 12-21 US Mortgage Delinquencies & Foreclosures