In: Finance
You will put $1200 down on a car and want a 4 year loan. You could buy a new car for $15,000 (interest rate 6%) or the same model car that is 2 years old for $11,500 (interest rate 6.5%). The new car has a monthly payment of $305.31 and the used car has a monthly payment of $244.26. Explain what you would pick and why.
Buying a new car is a better option, which can be explained as follows:
To determine which option is better, we need to calculate the IRR of both the options. The option with lower IRR is bettwer as you will have to pay a lower cost of capital for financing the loan for car.
| New Car | Old Car | |||
| At the beginning (month 0), you need to take a loan of $15,000 less $1200 down payment, i.e. loan of $13,800 and for the next 4 years, you will make monthly payments of $305.31 i.e. 48 monthly payments | At the beginning (month 0), you need to take a loan of $11,500 less $1200 down payment, i.e. loan of $10,300 and for the next 4 years, you will make monthly payments of $244.26 i.e. 48 monthly payments | |||
| Month | Net cash Flows | Month | Net cash Flows | |
| 0 | 13800 | 0 | 10300 | |
| 1 | -305.31 | 1 | -244.26 | |
| 2 | -305.31 | 2 | -244.26 | |
| 3 | -305.31 | 3 | -244.26 | |
| 4 | -305.31 | 4 | -244.26 | |
| 5 | -305.31 | 5 | -244.26 | |
| 6 | -305.31 | 6 | -244.26 | |
| 7 | -305.31 | 7 | -244.26 | |
| 8 | -305.31 | 8 | -244.26 | |
| 9 | -305.31 | 9 | -244.26 | |
| 10 | -305.31 | 10 | -244.26 | |
| 11 | -305.31 | 11 | -244.26 | |
| 12 | -305.31 | 12 | -244.26 | |
| 13 | -305.31 | 13 | -244.26 | |
| 14 | -305.31 | 14 | -244.26 | |
| 15 | -305.31 | 15 | -244.26 | |
| 16 | -305.31 | 16 | -244.26 | |
| 17 | -305.31 | 17 | -244.26 | |
| 18 | -305.31 | 18 | -244.26 | |
| 19 | -305.31 | 19 | -244.26 | |
| 20 | -305.31 | 20 | -244.26 | |
| 21 | -305.31 | 21 | -244.26 | |
| 22 | -305.31 | 22 | -244.26 | |
| 23 | -305.31 | 23 | -244.26 | |
| 24 | -305.31 | 24 | -244.26 | |
| 25 | -305.31 | 25 | -244.26 | |
| 26 | -305.31 | 26 | -244.26 | |
| 27 | -305.31 | 27 | -244.26 | |
| 28 | -305.31 | 28 | -244.26 | |
| 29 | -305.31 | 29 | -244.26 | |
| 30 | -305.31 | 30 | -244.26 | |
| 31 | -305.31 | 31 | -244.26 | |
| 32 | -305.31 | 32 | -244.26 | |
| 33 | -305.31 | 33 | -244.26 | |
| 34 | -305.31 | 34 | -244.26 | |
| 35 | -305.31 | 35 | -244.26 | |
| 36 | -305.31 | 36 | -244.26 | |
| 37 | -305.31 | 37 | -244.26 | |
| 38 | -305.31 | 38 | -244.26 | |
| 39 | -305.31 | 39 | -244.26 | |
| 40 | -305.31 | 40 | -244.26 | |
| 41 | -305.31 | 41 | -244.26 | |
| 42 | -305.31 | 42 | -244.26 | |
| 43 | -305.31 | 43 | -244.26 | |
| 44 | -305.31 | 44 | -244.26 | |
| 45 | -305.31 | 45 | -244.26 | |
| 46 | -305.31 | 46 | -244.26 | |
| 47 | -305.31 | 47 | -244.26 | |
| 48 | -305.31 | 48 | -244.26 | |
| Monthly IRR | 0.248% | Monthly IRR | 0.542% | |
To calculate the monthly IRR, use a financial calulator.
Calculate yearly IRR, using the formula:
Yearly IRR = [(1+monthly IRR)^12]-1
Thus, if you buy the new car its cost will be much lower at 3.02% per annum as compared to 6.07% per annum for buying the old car. Thus, it is better to purchase a new car.