--%>

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 : Relationship between interest rate and

    What is the relationship among interest rate and bond prices? Is there any difference among T-Bills versus Corporate bonds in reaching your assessment? Whenever the stock market falls, where do you assume that most investor place their money and why?<

  • Q : Problem on Imperfect information

    Imperfect information at times causes consumer’s attempts to maximize their contentment to fail since: (i) Prospects are imperfectly realized, and trial-and-error prototypes can lead to mistakes. (ii) Sellers might exploit asymmetric information

  • Q : From where Washington bureaucrats

    Can someone please help me in finding out the accurate answer from the following question. Typical Washington bureaucrats derive the maximum consumer surplus from: (1) Publicity in the Senate hearings. (2) Consuming the water. (3) Writing complex regulation. (4) Eatin

  • Q : Substitution Effect explanation Can

    Can someone help me in finding out the right answer from the given options. The substitution effect is fully explained when: (i) Brandon just eat tofu since he is on a diet. (ii) A rise in the price of corn chips drives up demand for the salsa. (iii)

  • Q : Zero primary deficits What points out

    What points out zero primary deficits? Answer: Zero primary deficits signify that the government has to resort to borrowings simply to make interest payments.

  • Q : Competitive market What do you mean by

    What do you mean by the term Competitive market?

  • Q : Export business prefer rising or

    Would export businesses choose a rising or declining dollar? Would it be similar for a European tourist on a budget and visiting the Grand Canyon? Explain your answer.

  • Q : Relevance of matter-SWOT analysis

    Relevance of matter: Relevance of matter is very much important while choosing any goals. Are the goals relevant to the vision of the company? A goal of having maximum number of customers seems fantabulous, however at the same time bank needs to make

  • Q : Define law of supply Law of supply : It

    Law of supply: It is the claim which, other things equivalent, the quantity supplied of a good increases whenever the price of the good increases.

  • Q : Define the term Supply curve Define the

    Define the term Supply curve.