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Many assets provide a series of cash inflows over time; and many obligations require a series of payments. When the payments are equal and are
Many assets provide a series of cash inflows over time; and many obligations require a series of payments. When the payments are equal and are made at fixed intervals, the series is an annuity. There are three types of annuities: Ordinary deferred annuity, Annuity due, and Growing annuity. One can find an annuity's future and present values, the interest rate built into annuity contracts, and the length of time it takes to reach a financial goal using an annuity. Growing annuities are often used in the area of financial planning. Their analysis is more complex and often easier solved using a financial spreadsheet, so we will limit our discussion here to the first two types of annuities.
The future value of an ordinary annuity, FVAN, is the total amount one would have at the end of the annuity period if each payment PMT were invested at a given interest rate and held to the end of the annuity period. The equation is:
Each payment of an annuity due is compounded for one
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period, so the future value of an annuity due is equal to the future value of an ordinary annuity compounded for one
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period. The equation is:
The present value of an ordinary annuity, PVAN, is the value today that would be equivalent to the annuity payments PMT received at fixed intervals over the annuity period. The equation is:
Each payment of an annuity due is discounted for one
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period, so the present value of an annuity due is equal to the present value of an ordinary annuity multiplied by I The equation is:
One can solve for payments PMT periods N and interest rates I for annuities. The easiest way to solve for these variables is with a financial calculator or a spreadsheet.
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What amount will be in your account at the end of years? Do not round intermediate calculations. Round your answer to the nearest cent.
$
Assume that your deposits will begin today. What amount will be in your account after years? Do not round intermediate calculations. Round your answer to the nearest cent.
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What amount do you need in your retirement account the day you retire? Do not round intermediate calculations. Round your answer to the nearest cent.
$
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$
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