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    Annuities and Sinking Funds - Calculating Lump Sum Needed

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    Carolyn Ellis is setting up an annuity for her retirement. She can set aside $2,000 at the end of each year for the next 20 years and it will earn 6% annual interest. What lump sum will she need to set aside today at 6% annual interest to have the same retirement fund available 20 years from now? How much more will Carolyn need to invest in periodic payments than she will if she makes a lump sum payment if she intends to accumulate the same retirement balance?

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    https://brainmass.com/math/basic-algebra/annuities-sinking-funds-calculating-lump-sum-needed-263728

    Solution Preview

    Solution:

    First let us compute the future value of annuity of 2,000 at 6% for 20 years

    Here R = $2000, i = 0.06, n = 20

    FV = R((1+i)^n-1)/i

    FV ...

    Solution Summary

    A step by step solution is provided through calculations with small worded explanation. The expert calculates the lump sum for sinking funds.

    $2.19