The net annual savings would be the amount of the discounts taken, less the interest on the bank loan.
Discounts taken = (0.01)($25,000)(2 times per month)(12 months) = $6,000
Interest on the bank loan = ($25,000)(1 - 0.01)(4,750)(0.10)(30/360)(24 loans) = $4,950, since each
loan would have to cover the 30 days between the 15 day discount period and the 45th day due date.
Net savings = $6,000 – $4,950 = $1,050