The definition that matters
Accountants define working capital as current assets minus current liabilities. For day-to-day management, the useful version is operating working capital: receivables plus inventory minus payables. That is the cash your operations are holding at any moment.
Every extra day customers take to pay, every extra week of stock, and every supplier paid early increases it. Our view: SME owners should track operating working capital monthly, alongside profit, because it explains most of the gap between “we made money” and “where is the cash?”.