--%>

Explain Tax rate increase.

A change in tax rate changes the IS equation, LM equation remaining the same. Let same, let us suppose that the government raises the tax rate from 20 percent to 25 percent. The rise in tax rate from t = 0.20 to t = 0.25 would change the IS equation by changing the consumption function with increase in tax rate, the consumption function changes form C = 100 + 100 + 0.60 Y, given in Eq. to 

C= 100 + 0.75 [Y - (40 + 0.25Y + 40)]

= 100 + 0.5625Y


With change in the consumption function, the new IS schedule (say, IS2) can be obtained as follows. 

IS2 schedule: 

Y = C + I + G + ?G

= 100 + 0.5625Y + 250 - 4i +200

= 1257.14 - 9.14i


Given the new IS function (IS2) in Eq. the new equilibrium interest rate can be worked out as follows.

Is2 = LM

1257.14 - 9.14i = 800 + 80i

89.14i = 457.14

I = 5.13 (percent)

Once interest rate is known equilibrium income with tax effect can be computed by substituting the interest rate (5.13%) into the IS2 or LM equation. By using IS2 function, we get

Y = 1257.14 - 9.14i = 1257.14 - 9.14 (5.13)

The negative effect of increase in tax rate on the equilibrium income equals income before tax - rise less income after tax-rise that is

Tax effect = $1311.10 bn - $1210.25 bn

$100.85 billion

This calculation shows that increasing tax rate form t = 0.20 to I = 0.25 decreases equilibrium income by $100.85 billion

   Related Questions in Macroeconomics

  • Q : FX rates In June 2005, a Big Mac sold

    In June 2005, a Big Mac sold for 6,000 pesos in Colombia and $3.00 in the United States. The exchange rate in June 2005 was 2,300 pesos per dollar. So, on Big Mac purchasing power parity grounds the Colombian peso was

  • Q : Explain Shut Down Price Explain the

    Explain the term Shut Down Price? Illustrate it.

  • Q : Purchasing and consumption of

    The usual household maximizes the utility by spending all its money to purchase and consume a combination of goods which yields: (1) Fundamental physiological requirements and customary wants. (2) Maximum status and the social prestige. (3) Complete satisfaction of al

  • Q : Discount rate-Prime rate and the

    What is the difference among the discount rate, prime rate and the subprime rates of interest? Which interest rate in particular build the 2008 recession? Explain how that happened.

  • Q : Shifting of demand curve due to new

    Assume that the launch of Microsoft Xbox 360 moved the demand curve for Sony PlayStation 2 games from D0 to D1 throughout similar period if new game designers enter into this market and hence supplies of PlayStation 2 games shifted S0 to S1. The market equilibrium: (1

  • Q : In which of these two statements

    "In corn market, demand often exceeds supply and supply sometimes exceeds demand." "The price of corn rises and falls in response to changes in supply and demand."

  • Q : Principles of macroeconomics what are

    what are the four factor of economic growth

  • Q : Supply law and it's factors State the

    State the Law of supply and explain the factors that affecting supply of commodity

  • Q : Type of market when people cannot buy

    Whenever people can’t purchase all of a good they are willing and capable to pay for at present market price, there is surely a market: (1) Price ceiling. (2) Price floor. (3) Shortage. (4) Anomaly.  (5) Surplus. Please

  • Q : Net revenue when price increases Net

    Net revenue for Macho Man fake mustaches increases after the price raised from $5 to $7, pointing that demand faced by Macho Man was: (i) Relatively elastic. (ii) Relatively inelastic. (iii) Unitarily elastic. (iv) Perfectly inelastic. (v) Perfectly e