In: Finance
Karim Soltan is shopping for a new vehicle, and has noticed that many vehicle manufacturers are offering special deals to sell off the current year’s vehicles before the new models arrive. Karim’s local Ford dealership is advertising 3.9% financing for a full 48 months (i.e., 3.9% compounded monthly) or up to $4000 cash back on selected vehicles.
The vehicle that Karim wants to purchase costs $24 600 including taxes, delivery, licence, and dealer preparation. This vehicle qualifies for $1800 cash back if Karim pays cash for the vehicle. Karim has a good credit rating and knows that he could arrange a vehicle loan at his bank for the full price of any vehicle he chooses. His other option is to take the dealer financing offered at 3.9% for 48 months.
Karim wants to know which option requires the lower monthly payment. He knows he can use annuity formulas to calculate the monthly payments.
Questions
a. Suppose Karim buys the vehicle on July 1. What monthly payment
must Karim make if he chooses the dealer’s 3.9% financing option
and pays off the loan over 48 months? (Assume he makes each monthly
payment at the end of the month and his first payment is due on
July 31.)
b. Suppose the bank offers Karim a 48-month loan with the interest
compounded monthly and the payments due at the end of each month.
If Karim accepts the bank loan, he can get $1800 cash back on this
vehicle.
Help Karim work out a method to calculate the bank rate of
interest required to make bank financing the same cost as dealer
financing. First, calculate the monthly rate of interest that would
make the monthly bank payments equal to the monthly dealer
payments. Then calculate the effective rate of interest represented
by the monthly compounded rate. If the financing from the bank is
at a lower rate of interest compounded monthly, choose the bank
financing. The reason is that the monthly payments for the bank’s
financing would be lower than the monthly payments for the dealer’s
3.9% financing.
(i) How much money would Karim have to borrow from the bank to pay
cash for this vehicle?
(ii) Using the method above, calculate the effective annual rate of
interest and the nominal annual rate of interest required to make
the monthly payments for bank financing exactly the same as for
dealer financing.
c. Suppose Karim decides to explore the costs of financing a more
expensive vehicle. The more expensive vehicle costs $34 900 in
total and qualifies for the 3.9% dealer financing for 48 months or
$2500 cash back. What is the highest effective annual rate of
interest at which Karim should borrow from the bank instead of
using the dealer’s 3.9% financing?