In: Finance
Annual Payment = [Loan Amount * r] / [1 - (1 + r)-n]
= [$50,000 * 0.085] / [1 - (1 + 0.085)-5]
= $4,250 / 0.3350 = $12,688.29
Interest Portion of First Payment = Outstanding loan at start of year * Interest Rate
= $50,000 * 0.085 = $4,250
Principal repayment portion of first payment = Annual Payment - Interest Portion of First Payment
= $12,668.29 - $4,250 = $8,438.29
So, you will reduce the loan amount by $8,438.29 in the first year.