Hurdle rate, the opportunity cost of capital and discounting rate are all same. It is that rate of return which can be earned from next best alternative investment opportunity with similar risk profile. The concept of hurdle rate is used widely used for valuation purposes in the prominent techniques such as net present value, internal rate of return etc.

The term ‘opportunity cost’ is a simple and general term which can be used in any normal day to day situation. For example, if you have two options for your breakfast, sandwich and burger. You can have only one of the two. How do you decide? Normally, you will try choosing the one which gives you more satisfaction. If you choose a sandwich, you will lose the satisfaction which you were about to get in having a burger and vice versa. So, the amount of satisfaction you realize in having a burger is your opportunity cost for having a sandwich and vice versa.

In finance also, the meaning of opportunity cost does not change, only the factors change. Opportunity cost is the benefit of one investment sacrificed for investing in the other one. If the investment option 1 gives 10% as return and option 2 gives 12%. Return of option 1 is the opportunity cost for option 2 and vice versa.

Suppose a company is willing to invest 1 million dollars in a real estate firm. The value of the firm after one year in best, normal and worse scenario will be 1.3, 1.1 and 0.9 million dollars. All the three scenarios have an equal chance of occurrence. Therefore, expected value of the farm is 1.1 [(1.3+1.1+0.9)/3].

For finding out the net present value of the underlying investment opportunity, we need to have the correct opportunity cost of capital. Assume there is a stock in share market which sells at $100 and is forecasted to have a value of 115$ a year later. Also, this stock has the same risk profile. The rate of return on the stock is 15%. [(115-100)/100].

Since the investment in stock and the real estate has the same risk, we will consider 15% rate of return of stock as the opportunity cost of capital for evaluating the investment in the real estate farm.

Net Present Value (NPV) = -1,000,000 + 1,100,000 / 1.15 = – 43,500

As per the NPV, the investment in real estate is not worth choosing because the NPV is negative. Instead of investing in real estate if the company invests in the stock, it will get better returns. This is how the comparison with opportunity cost reveals whether you should enter into certain investment options or not.

*How to decide the discounting rate of return / hurdle rate / opportunity cost of capital for NPV calculation?*

- Find the riskiness of the proposed investment. (Real Estate Farm)
- Search for other opportunities of investment having similar risks. (Stock)
- Find out the rate of return on that opportunity. (15% on Stock)
- Utilize the rate of return as the discounting rate for finding out the NPV.

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