In: Accounting
A lcompany is trying to upgrade its current equipements, which has an initial fee of $30,000. The upgrade is expected to save them $5,000 in year 1 and increase by $500 each year thereafter. At an interest rate of 15% per year, what is the annual worth of the purchase over 7 years?
Calculation of present value of total savings over 7 years:
| 
 Year  | 
 Savings per year  | 
 Discounting factor of 15%  | 
 Present Value  | 
| 
 1  | 
 5000  | 
 0.870  | 
 4350  | 
| 
 2  | 
 5500  | 
 0.756  | 
 4158  | 
| 
 3  | 
 6000  | 
 0.658  | 
 3948  | 
| 
 4  | 
 6500  | 
 0.572  | 
 3718  | 
| 
 5  | 
 7000  | 
 0.497  | 
 3479  | 
| 
 6  | 
 7500  | 
 0.432  | 
 3240  | 
| 
 7  | 
 8000  | 
 0.376  | 
 3008  | 
| 
 Total  | 
 25901  | 
Initial fees for upgrading current equipments = $30000
Total present value of savings from current equipment = 25901
Net worth of purchase over 7 years =
Total present value of savings from current equipment - Initial fees for upgrading current equipments
= 25901 – 30000 = (4099)
Calculation of Annual worth of purchase over 7 years:
Let annual worth of purchase be X.
Net worth of purchase over 7 years = X*Present value annuity factor (15%, 7)
(4099) = X*4.1604
X = (4099)/ 4.1604 = (985.24)
The annual worth of purchase over 7 years is negative.