(1)What is the impact of an increase in taxes on the interest rate, income, consumption, and investment? Use the IS-LM model to answer this question.
(2)What is the impact of a decrease in the money supply on the interest rate, income, consumption, and investment? Use the IS-LM model to answer this question.
SOLUTION:-
In both IS-LM graphs, IS0 & LM0 are initial IS & LM curves intersecting at point A with initial interest rate r0 and output Y0.
(1)
An increase in tax decreases Consumption and Investment. Hence, IS curve will shift leftward, decreasing both interest rate and output. A decrease in output decreases income
In following graph, IS0 shifts lefts to IS1, intersecting LM0 at point B with lower interest rater r1 and lower output Y1.
(2)
A decrease in money supply shifts LM curve leftward, increasing interest rate and decreasing output. A decrease in output decreases income, consumption and investment.
In following graph, LM0 shifts left to LM1, intersecting IS0 at point B with higher interest rate r1 and lower output Y1.
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