¶ … Value of the Future Stream of Cash Flows Equals Value of the Discounted Amounts of These Cash Flows
If the bank is paying 4% annual interest rate on the banking account, the present value of the future $1,250 in one years is worth today
PV = FV/(1 + r)
And thus future value of $1,250 with the discount rate of 4% is approximately $1,202.
Account A is earning 6% interest yearly and will be worth $3,000 in one year, employing the mentioned above formula, the present worth of this account is $2,830. Account B. is earning the same 6% yearly interest rate and will be worth $4,000 in two years. Present value of this future payment can be calculated employing the following formula:
PV = FV/(1 + r)^
Future value is discounted by the 6% interest rate foregone by two years and that is why it is necessary to use square root of the discount rate. So, the present value of the Account B. payment of $4,000 in two years is worth today $3,560.
Assuming that I have inherited an oil well which is expected to have life of three years untill it dries out and thus is expected to generate three more cash flows.
Year 1: $260,000
Year 2: $310,000
Year 3: $420,000
The discount rate for this stream of income is 7% and the present value of this steram of cash flows is calculated using the following formula:
PV = CF1/(1 + r) + CF2/(1 + r)^2 + CF3/(1 + r)^3
Thus, the present value of this stream of cash flows equals sum of present values of these cash flows. As cash flow two occurs in the second year from now, it must be discounted by (1 + r)^2 as this is the worth of this cash flow in todays money. The value I would agree to pay now to receive this stream of cash flows is $856,600.
Discount rate used in computing the present worth of the cash flows to be received from any investment opportunity is the interest forgone if having invested in this plan rather than in other plan. For example, if you can earn 7% annual interest on an investment opportunity, but you do not choose to do so and invest in something else, the actual true present value of the cash flows to be received from the second opportunity is worth 7% less each year to you due to opportunity foregone by having chosen the second opportunity.
Investment decision is used depending on the risks associated with investment initiatives and how the investor perceives the investment plan to be risky. If the investor perceives the plan to have low risk and he believes cash flows have big opportunity of occuring, the discount rate used to compute the present value of these cash flows will be lower than the discount rate used for other investment opportunities. Discount rate is the opportunity foregone and can be also viewed as required rate of return for the investor. Simple logic suggests that no investor will be willing to give up his funds for an initiative yielding 5% annual interest if he has access to investment opportunity with the same risk level but yielding 7% annual interest.
Investor would need to be motivated by higher possible rates of return for the riskir investments as majority of the investors are risk-averse with their different risk aversion rates. Plan that has some chance of not brinning any positive income for the investor would need to be given higher rates of risk in order to arrive at Net Present Value etimate for this initiative, which is the fair investment attractiveness measure. For example, one plan is very promising but has many risks associated with achieving it, the other initiative is not that promising and income is not expected to be as high, while the risks are much lower. Thus, the Net Present Value of the second initiative can be higher than for the first one and will be more acceptable for the investor.
Discount rate accumulates risk free rate of return, or the interest that could be generated with no risk at all, and is usually the interest rate on the government bonds with appropriate date to maturity. Then, the risk premium for the economy development (in case of international investments), risk premium for the region economic development in case the project is competing only within the region, risk premium for the city for innercity projects, risk premium for the industry development within which the project is likely to find competitors as industries are prone to be performing based on specific...
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