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given a certain yearly savings, how much can i spend on a capital improvement? npv of future cash flow
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this investment does not have a payback period as the net present value of your investment is negative. your investment requires an initial cash outlay of $40,000 followed by annual savings of $2060 for the next 20 years. your discount rate is 5% at which the npv is $-14327.85 as calculated below by using this javascript financial functions library tadjs that is based on a popular tadxl add-in for excel 2007, 2010 and 2013.
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