What Working Capital Is and Why Profitable Businesses Still Run Out of Cash
Sam's List Editorial | 2026-07-14
What Working Capital Is and Why Profitable Businesses Still Run Out of Cash Working capital is the money your business has available to cover its day-to-day obligations, calculated as current assets minus current liabilities. In plain terms, it's what's left when you subtract what you owe soon from what you can turn into cash soon. It's the reason a profitable business can still miss payroll. That last part surprises a lot of owners. Profit and cash are not the same thing, and the gap between them is where healthy-looking businesses get into trouble. This is a plain-English guide to what working capital is, why it matters more than your profit line on any given week, and how to keep it from strangling a growing business. The Formula, and What Goes In It Working capital is current assets minus current liabilities. Current assets are things that will become cash within about a year: the cash you already have, accounts receivable (money customers owe you), and inventory. Current liabilities are what you owe within about a year: accounts payable (money you owe vendors), short-term debt, and other near-term obligations. Subtract the second from the first, and a positive number means you can cover your near-term obligations with your near-term resources. A negative number means you can't, at least not without new cash coming in. Some owners also watch the current ratio, which is current assets divided by current liabilities. A ratio above 1 means positive working capital. The exact healthy level varies by industry, so your trend matters more than any universal target. Why Profit and Cash Drift Apart Here's the part that trips people up. Your profit and loss statement can show a great month while your bank account tells a scary story. Both can be true at once. The reason is timing. Your income statement records a sale when you make it, not when you get paid. So you can book $50,000 in revenue, owe tax and payroll on the work behind it, and still be waiting 60 days for the customer to actually pay. On paper you're profitable. In the bank, you're short. Profit is an accounting concept. Cash is a fact, and working capital is the bridge between them. The Cash Conversion Cycle The clearest way to see working capital in action is the cash conversion cycle: how long your money is tied up before it comes back as cash. It runs through three stages. You pay for inventory or labor (cash goes out). You hold inventory or do the work (cash is tied up). You bill the customer and wait to get paid (cash finally comes back). The longer that cycle, the more cash your business...
