Final answer:
To determine the return on a $2,500 refinancing cost, compare the total savings of the new adjustable-rate mortgage (ARM) against the initial cost. If the savings exceed the cost, refinancing may be beneficial. However, if interest rates rise faster than expected, higher costs could negate the benefits of refinancing.
Step-by-step explanation:
Calculating the return on refinancing costs involves comparing the total savings from the new loan with the initial refinancing costs. To find the return on your $2,500 refinancing cost, you would need to calculate the total payment amount of both the principal and interest over the next 5 years with the new adjustable-rate mortgage (ARM) and compare it to what you would have paid with your original loan. If the total savings exceed $2,500, refinancing may be beneficial.
However, if interest rates rise faster than expected, this will affect your ARM by increasing your monthly payments and the total amount paid over the life of the loan. This could potentially make the refinancing option less attractive, as the higher than expected interest rates could diminish your savings or even make the new loan more costly than if you had stuck with the original loan.
In summary, to determine if refinancing is a good decision, one must analyze the forecasted interest rates, the current rates available, and the length of time you intend to stay in the home post-refinance. If there is uncertainty or if rates are anticipated to rise, the risks associated with an ARM could outweigh the initial savings on interest payments.