What are Determinants of Investment?
It refers to factors which affect the amount of investment in a project
According to Keynes, there are 2 main determinants of investment
Marginal Efficiency of Investment
Rate of interest
Lets understand them with the help of an example
Example 1
Suppose I plan to purchase a machine for Rs 100000
With this machine, I would make goods at a cost of Rs 500000
These goods I will sell for Rs 530000
To purchase this machine, I will take a loan from bank who will charge 10000 interest
Should I make the investment?
Rate of Interest on loan = 10000/100000 = 10%
Profit earned from Machine = 530000 - 500000 = 30000
Marginal Efficiency of Investment (Return earned on Machine) = 30000/ 100000 = 30%
Since Marginal Efficiency of Investment is more than Rate of Interest on loan
We should make the investment
What is Marginal Efficiency of Investment? (MEI)
It is the expected rate of return on additional investment
Formula
Marginal Efficiency of Investment = Yield or Profit on Investment/ Supply Price
What is Rate of interest (ROI)?
It refers to cost of borrowing money for financing the investment
How does MEI and ROI Affect Investment?
MEI is directly proportional to investment made
More MEI, More the investment made
ROI is inversely proportional to investment made
Higher the ROI, Lower the investment made and vice versa
NCERT Questions
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Question 1
What are the determinants of Investment?
Explain them.
View AnswerDeterminants of Investment refers to factors which affect the amount of
investment in a project.
According to Keynes, there are 2 main determinants of investment
- Marginal Efficiency of Investment
- Rate of interest