Question: Calculating the APR when the add-on method is used Add-on interest rates and APRs are not equivalent. This is because the add-on calculation (using the
Calculating the APR when the add-on method is used
Add-on interest rates and APRs arenotequivalent. This is because the add-on calculation (using the equationI=PRT, whereIis the add-on interest,Pis the amount borrowed,Ris the interest rate, andTis the time of the loan in years) assumes that the original debt is owed for the entire period of the loan. However, in reality the debt goes down as the loan is repaid.
The following equation shows the n-ratio method for estimating the APR for an add-on loan:

APR Y(95P+9)F 12P(P+1)(4D+F)
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Solution To calculate the APR using the addon method you can use the following equation APR 12PP14DF ... View full answer
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