--%>

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 : Positional Goods problem Can someone

    Can someone help me in finding out the right answer from the given options. In accord with the theories of Thorstein Veblen, the positional goods from which the owner or user of the good derives the jollies mainly since of the power, class and status signaled by the p

  • Q : Implication of Fiscal deficit

    Implication of Fiscal deficit A) It raise the supply of money in the economyB) It rises financial burden for future generation.C) It is the cause of inflation.

  • Q : Law of equal marginal advantage The law

    The law of equivalent marginal advantage is violated when people: (1) think about paying a higher price that ensures better quality. (2) elect a general as president while war clouds threaten. (3) fail to allocate similar resources within equally valu

  • Q : Receipts from taxes Why are receipts

    Why are receipts from taxes classified as revenue receipts? Answer: Receipts from taxes are classified as revenue receipts since they do not build liabilities nor r

  • Q : What are various economic growth

    Economic growth is generally defined as a sustained increase in per capital national output over a long period of time. It implies that for economic growth of a nation, the rate of increase in its total output must be greater than the rate of population growth. It ma

  • Q : Base of categorizing receipts into

    What is the base of categorizing receipts into revenue and capital receipts?

  • Q : Custodian of nations foreign exchange

    Name the institution that acts as a custodian of nation’s foreign exchange reserves? Answer: The Central Bank is an institution that acts as custodian of natio

  • Q : Borrowings and recovery of loans

    Categorize the borrowings and recovery of loans into capital and revenue receipts of government budget. Give reason too.

  • Q : Backward shifting of incidence tax When

    When firms bear the legal incidence of a tax, this is backward shifted while: (1) firms burden consumers by raising their prices. (2) the tax burden is borne by workers in the form of lower wages. (3) resource suppliers seek higher factor payments to

  • Q : Paradox of Value problem I have a

    I have a problem in economics on Paradox of Value problem. Please help me in the following question. The Diamond Water Paradox occurs from the difficulties in differentiating between: (i) Consumer surplus and the total utility. (ii) Total utility and