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The payment calculator is for demonstration purposes only. Any changes in interest rate, refinance of the subject loan, or additional payments will have a significant affect on the savings & payment schedules. Some of the figures are ESTIMATES and do not include the enrollment fee or banking service fee. The effective interest rate calculation includes the accelerated payments. For further detail regarding the calculations, please refer to the Dealer Information page. *Using a biweekly payment schedule, one can greatly reduce the duration in which one would normally pay a loan by only adding two extra half payments per year. The new loan will therefore be paid off in a new lower number of months, which we will call M, instead of the original number of months explicitly stated on the original loan statement. We can now define an effective interest rate, which we will define as the interest rate at which the original loan amount would be paid off using the original monthly payment over the new reduced time period of M months. Using the standard loan payment calculation this new effective rate can be easily calculated:
We calculate this by using this
formula and a simple loop which
converges to the solution for "Effective Rate" that matches for any
given Loan Amount, Payment and reduced payoff time, M. Note, that M has
a minimum value of Loan Amount/Payment at which point the Effective Rate
is zero (i.e. no interest paid, since at that point, Loan Amount =
Payment x M ) |
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