Accounting using Installment Sales Method to determine the realized gross profit on installment sales based on the rate of gross profit (%), (installment sales cost of sales = gross profit), rate of gross profit = (gross profit/installment sales), gross profit realized = (cash sales receipts x rate of gross profit (%)), deferred gross profit = (installment sales cost of sales), deferred gross profit is realized as gross profit (cash sales receipts x gross profit rate %), detailed accounting by Allen Mursau