--%>

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 : Problem on slope of demand curve The

    The demand curve for DVD games is a straight line, therefore its slope: (1) Is constant, although price elasticity of demand drops/falls as output increases. (2) Price elasticity are both stable. (3) Is constant, although price elasticity of demand increases as the pr

  • 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 : 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 : Microeconomics is studying economic

    is studying economic worth your time and effort

  • Q : Domestic Investment & Economies

    Question: How will a fall in domestic investment affect the trade surplus and net capital outflows in the domestic economy, the trade deficit and capital inflows in the rest of the world, investment in both economi

  • Q : Why tax considered as revenue receipt

    Why is tax considered as revenue receipt? Answer: Since tax neither makes a liability for government nor decreases assets of the government.

  • Q : Elasticity of brain power When doubling

    When doubling your viewing of soap operas to 16 hrs per week reasons your IQ score to drop/fall from a mastermind level of 140 to a sluggish 70, your TV elasticity of brain power will be: (i) + 1.0. (ii) zero. (iii) – 1.0. (d) +0.5. (e) -0.5.

  • Q : How Bank rates control the credit How

    How Bank rates control the credit? Answer: Bank rate is the rate of interest at which the Central bank lends to Commercial banks. By increasing the bank rate centra

  • Q : Maximum Consumer Surplus Assume that

    Assume that you receive $18 worth of ‘jollies’ (that is, utility, satisfaction or pleasure) from the very first hole of golf played on a particular day, and that your extra jollies from succeeding the holes drops $1 for each and every hole played. You shou

  • Q : Maximizing consumer utility The

    The consumer maximizes the utility whenever spending patterns causes: (i) Total outlays to increase each time prices are altered. (ii) Marginal utilities of each and every good consumed to be equivalent. (iii) Marginal utilities from the last cent spent on each and ev