In: Accounting
| Sales | 1,000,000 | 
| Less: Variable cost | 350,000 | 
| Less: Fixed cost | 300,000 | 
| less: Depreciation | 100,000 | 
| Profit before tax | 250,000 | 
| Less: Tax @35% | 87,500 | 
| Profit after tax | 162,500 | 
| Add: Depreciation | 100,000 | 
| Cash flows p.a. | 262,500 | 
Calculation of NPV
| Year | Amount | PVF@12% | Discounted value | |
| Initial investment | 0 | 640,000 | 1 | (640,000) | 
| Cash flows p.a. | 1-10 | 262,500 | 5.650 | 1,483,125 | 
| NPV | 843,125 | 
Case 1: Investment varies by 10%
| Year | Amount | PVF@12% | Discounted value | |
| Initial investment | 0 | 704,000 | 1 | (704,000) | 
| Cash flows p.a. | 1-10 | 262,500 | 5.650 | 1,483,125 | 
| NPV | 779,125 | 
Sensitivity = (779,125 - 843,125)/ 843,125
= -7.59% if Investment increases by 10%
and +7.59% if investment decreases by 10%
Case 2: If sales varies
| Sales | 1,100,000 | 
| Less: Variable cost | 350,000 | 
| Less: Fixed cost | 300,000 | 
| less: Depreciation | 100,000 | 
| Profit before tax | 350,000 | 
| Less: Tax @35% | 122,500 | 
| Profit after tax | 227,500 | 
| Add: Depreciation | 100,000 | 
| Cash flows p.a. | 327,500 | 
Calculation of NPV
| Year | Amount | PVF@12% | Discounted value | |
| Initial investment | 0 | 640,000 | 1 | (640,000) | 
| Cash flows p.a. | 1-10 | 327,500 | 5.650 | 1,850,375 | 
| NPV | 1,210,375 | 
Sensitivity = (1,210,375 - 843,125)/ 843,125
= 43.56% if sales increases by 10%, and -43.56% if sales decreases by 10%
Case 3: If Variable cost varies
| Sales | 1,000,000 | 
| Less: Variable cost | 385,000 | 
| Less: Fixed cost | 300,000 | 
| less: Depreciation | 100,000 | 
| Profit before tax | 215,000 | 
| Less: Tax @35% | 75,250 | 
| Profit after tax | 139,750 | 
| Add: Depreciation | 100,000 | 
| Cash flows p.a. | 239,750 | 
Calculation of NPV
| Year | Amount | PVF@12% | Discounted value | |
| Initial investment | 0 | 640,000 | 1 | (640,000) | 
| Cash flows p.a. | 1-10 | 239,750 | 5.650 | 1,354,588 | 
| NPV | 714,588 | 
Sensitivity = (714,588 - 843,125)/ 843,125
= -15.25% if variable cost increases by 10%, and 15.25% if variable cost decreases by 10%
Case 4: If fixed cost varies
| Sales | 1,000,000 | 
| Less: Variable cost | 350,000 | 
| Less: Fixed cost | 330,000 | 
| less: Depreciation | 100,000 | 
| Profit before tax | 220,000 | 
| Less: Tax @35% | 77,000 | 
| Profit after tax | 143,000 | 
| Add: Depreciation | 100,000 | 
| Cash flows p.a. | 243,000 | 
Calculation of NPV
| Year | Amount | PVF@12% | Discounted value | |
| Initial investment | 0 | 640,000 | 1 | (640,000) | 
| Cash flows p.a. | 1-10 | 243,000 | 5.650 | 1,372,950 | 
| NPV | 732,950 | 
Sensitivity = (732,950 - 843,125)/ 843,125
= -13.07% ifi fixed cost increases by 10%, and 13.07% if fixed cost decreases by 10%
Change in the value of Sales has affected the NPV the most