To calculate net accounts receivable, you need: total accounts receivable, allowance for doubtful accounts, and sales returns and allowances. A company's net receivables are the total amount of money its customers owe minus what the company estimates will likely never be paid.Net Credit Sales is total credit credit sales during a specific period (usually a year) minus any returns and allowances;. This is the first step in calculating the accounts receivable turnover ratio. The balance sheet method uses accounts receivable to calculate the ending allowance for bad debt.