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Capital Markets. Savings, Investment, and Interest Rates. Some Useful Terminology. Savings: Current income which is deferred for future consumption (i.e., not spent). Some Useful Terminology. Savings: Current income which is deferred for future consumption (i.e., not spent)
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Capital Markets Savings, Investment, and Interest Rates
Some Useful Terminology • Savings: Current income which is deferred for future consumption (i.e., not spent)
Some Useful Terminology • Savings: Current income which is deferred for future consumption (i.e., not spent) National Income: $8,512.3 B + Dividend Payments, Interest, Gov’t Transfers, etc.: $582.5B • Taxes: $1,077.2 B = Personal Disposable Income: $8,017.6 B - Personal Consumption Expenditures: $7,727.2 B = Personal Savings: $290.4B (3.5% of Personal Income)
Some Useful Terminology • Savings: Current income which is deferred for future consumption (i.e., not spent) National Income: $8,512.3 B + Dividend Payments, Interest, Gov’t Transfers, etc.: $582.5B • Taxes: $1,077.2 B = Personal Disposable Income: $8,017.6 B - Personal Consumption Expenditures: $7,727.2 B = Personal Savings: $290.4B (3.5% of Personal Income) • Note that there are many ways to save (savings account, bonds, stocks, etc.)
Some Useful Terminology • Investment: The purchase of new capital goods.
Some Useful Terminology • Investment: The purchase of new capital goods. • Gross Investment: Total purchases of new capital goods
Some Useful Terminology • Investment: The purchase of new capital goods. • Gross Investment: Total purchases of new capital goods • Gross Private Investment: $1,611.2 B • Gross Public Investment: $355 B
Some Useful Terminology • Investment: The purchase of new capital goods. • Gross Investment: Total purchases of new capital goods • Gross Private Investment: $1,611.2 B • Gross Public Investment: $355 B • Net Investment: Gross investment less depreciation of existing capital (capital consumption) • Net Private Investment:$500 B • Net Public Investment: $250 B
NIPA Accounts • Recall, the accounting identity in the NIPA accounts: GDP = C + I + G + NX
NIPA Accounts • Recall, the accounting identity in the NIPA accounts: GDP = C + I + G + NX • GDP = Gross Private Savings + Taxes + C
NIPA Accounts • Recall, the accounting identity in the NIPA accounts: GDP = C + I + G + NX • GDP = Gross Private Savings + Taxes + C Gross Private Savings = I + (G-T) + NX I (Public + Private) : $1,966 B + (G-T): $106B + NX: - $559B Gross Private Savings: $1,513B (16% of GDP)
NIPA Accounts • Recall, the accounting identity in the NIPA accounts: GDP = C + I + G + NX • GDP = Gross Savings + Taxes + C I + (G-T) + NX = Gross Private Savings I (Public + Private) : $1,966 B + (G-T): $123B + NX: - $487B Gross Private Savings: $1,513B Personal Savings ($290B) = Gross Private Saving ($1,513B) - Depreciation
Interest Rates • What is an interest rate?
Interest Rates • What is an interest rate? • The interest rate is the relative price of current spending in terms of foregone future income.
Interest Rates • What is an interest rate? • The interest rate is the relative price of current spending in terms of foregone future income. • Example: if the interest rate is 5% (Annual), you must give up $1.05 worth of next year’s income in order to increase this year’s spending by $1.
Yield Curves • What determines the shape of the yield curve? • Segmented Markets Hypothesis • Expectations Hypothesis • Preferred Habitat Hypothesis
Interest Rates • Treasury Securities (1 - 5%) • Agency Securities (1 - 5%) • Municipal Bonds (3 – 5%) • Corporate Bonds (6 – 11%) • Preferred Stock (5 – 15%) • Asset Backed Securities (4 – 5%)
Interest Rates • Treasury Securities (1 - 5%) • Agency Securities (1 - 5%) • Municipal Bonds (3 – 5%) • Corporate Bonds (6 – 11%) • Preferred Stock (5 – 15%) • Asset Backed Securities (4 – 5%) • “Risky” Rate = Risk Free Rate + Risk Premium
Real vs. Nominal Interest Rates • As with any other variable, the nominal interest rate is in terms of dollars. (the cost of a current dollar in terms of forgone future dollars). To calculate the real interest rate, we need to correct for the purchasing power of those dollars.
Real vs. Nominal Interest Rates • As with any other variable, the nominal interest rate is in terms of dollars. (the cost of a current dollar in terms of forgone future dollars). To calculate the real interest rate, we need to correct for the purchasing power of those dollars. • Exact: (1+i ) = (1+ r )*(1 + inflation rate)
Real vs. Nominal Interest Rates • As with any other variable, the nominal interest rate is in terms of dollars. (the cost of a current dollar in terms of forgone future dollars). To calculate the real interest rate, we need to correct for the purchasing power of those dollars. • Exact: (1+i ) = (1+ r )*(1 + inflation rate) • Approximation: i = r + inflation rate
Real vs. Nominal Interest Rates • As with any other variable, the nominal interest rate is in terms of dollars. (the cost of a current dollar in terms of forgone future dollars). To calculate the real interest rate, we need to correct for the purchasing power of those dollars. • Exact: (1+i ) = (1+ r )*(1 + inflation rate) • Approximation: i = r + inflation rate • How can real interest rates be negative?
Real vs. Nominal Interest Rates • As with any other variable, the nominal interest rate is in terms of dollars. (the cost of a current dollar in terms of forgone future dollars). To calculate the real interest rate, we need to correct for the purchasing power of those dollars. • Exact: (1+i ) = (1+ r )*(1 + inflation rate) • Approximation: i = r + inflation rate • How can real interest rates be negative? • Ex ante vs. ex post
Present Value • With a positive interest rate, income received in the future is less valuable that income received immediately.
Present Value • With a positive interest rate, income received in the future is less valuable that income received immediately. • At a 5% annual interest rate, $1.05 to be received in one year is equivalent to $1 to be received today (because $1 today could be worth $1.05) $1(1.05) = $1.05
Present Value • With a positive interest rate, income received in the future is less valuable that income received immediately. • At a 5% annual interest rate, $1.05 to be received in one year is equivalent to $1 to be received today (because $1 today could be worth $1.05) $1(1.05) = $1.05 • Therefore, the present value of $1.05 to be paid in one year (if the annual interest rate is 5%) is $1.
Present Value • With a positive interest rate, income received in the future is less valuable that income received immediately. • At a 5% annual interest rate, $1.05 to be received in one year is equivalent to $1 to be received today (because $1 today could be worth $1.05) $1(1.05) = $1.05 • Therefore, the present value of $1.05 to be paid in one year (if the annual interest rate is 5%) is $1. • In general, the PV of $X to be paid in N years is equal to PV = $X/(1+i)^N
Income vs. Wealth • Your wealth is defined and the present value of your lifetime income.
Income vs. Wealth • Your wealth is defined and the present value of your lifetime income. • For example, suppose you expect your annual income to be $50,000 per year for the rest of your life. If the annual interest rate is 3%: Wealth = $50,000 + $50,000/(1.03) + $50,000/(1.03)^2 + …… = $50,000/(.03) = $1,666,666 (Approx)
Household Savings • Without an active capital markets, household consumption is restricted to equal current income (that is, C=Y)
Household Savings • Without an active capital markets, household consumption is restricted to equal current income (that is, C=Y) • With capital markets, the present value of lifetime consumption must equal the present value of lifetime income (assuming all debts are eventually repaid)
A two period example • Suppose that your current income is equal to $50,000 and you anticipate next year’s income to be $60,000. The current interest rate is 5%.
A two period example • Suppose that your current income is equal to $50,000 and you anticipate next year’s income to be $60,000. The current interest rate is 5%. • In the absence of capital markets, your consumption stream would be $50,000 this year and $60,000 next year.
Borrowing to increase current consumption • To increase your current consumption, you could take out a loan. Your current consumption would now be C = $50,000 + Loan
Borrowing to increase current consumption • To increase your current consumption, you could take out a loan. Your current consumption would now be C = $50,000 + Loan • However, you must repay your loan next year. This implies that C’= $60,000 – (1.05)Loan
Borrowing to increase current consumption • To increase your current consumption, you could take out a loan. Your current consumption would now be C = $50,000 + Loan • However, you repay your loan next year. This implies that C’= $60,000 – (1.05)Loan • For example, if you take out a $10,000 loan, your current consumption would be $60,000, while your future income would be $60,000 - $10,000(1.05) = $49,500
Borrowing Limits • Note that you need to be able to repay your loan next year. Therefore, $60,000 > (1.05)Loan
Borrowing Limits • Note that you need to be able to repay your loan next year. Therefore, $60,000 = (1.05)Loan • Your maximum allowable loan is $60,000/1.05 = $57,143 (this is associated with zero future consumption)
Borrowing Limits • Note that you need to be able to repay your loan next year. Therefore, $60,000 = (1.05)Loan • Your maximum allowable loan is $60,000/1.05 = $57,143 (this is associated with zero future consumption) • Therefore, your maximum current consumption is $107,143
Saving to increase future consumption • You could increase future consumption by saving some of your income (i.e. a negative loan). Suppose you put $20,000 in the bank, your current consumption is now $30,000.
Saving to increase future consumption • You could increase future consumption by saving some of your income (i.e. a negative loan). Suppose you put $20,000 in the bank, your current consumption is now $30,000. • Next year, your bank account will be worth $20,000(1.05) = $21,000. Therefore, your future consumption will be $81,000