TL;DR: Working capital is the money a business has available to fund its day-to-day operations, calculated as current assets minus current liabilities. It measures short-term financial health and a company's ability to cover near-term obligations such as payroll, suppliers, and rent.
Working capital is the difference between a company's current assets (cash, receivables, inventory) and its current liabilities (payables, short-term debt, accrued expenses). A positive figure means the business can meet its short-term obligations from short-term resources. A negative figure can signal a liquidity squeeze, even in a company that is growing.
It is a measure of operational liquidity, not long-term value. A profitable company can still run into a working-capital crunch if cash is tied up in receivables or inventory while bills come due.
The two are often confused. Working capital funds the ordinary running of the business: the gap between paying for inputs and collecting from customers. Growth capital funds expansion: hiring ahead of revenue, entering new markets, or building product. Bank operating lines are typically sized for working-capital needs. Venture debt and other forms of growth capital are sized for the second purpose, where the return is measured over a longer horizon than a single operating cycle.
Investors and lenders read working capital as a sign of how tightly a business is run. For a high-growth company, the relevant question is usually whether operations are funded comfortably enough that new capital can go toward growth rather than plugging short-term gaps.
Is more working capital always better? Not necessarily. Very high working capital can mean cash or inventory is sitting idle rather than being deployed. The right level depends on the business model and cash conversion cycle.
Does venture debt cover working capital? Venture debt is generally used for growth initiatives rather than routine working-capital needs, though extending runway can indirectly relieve short-term pressure. Bank operating lines are the more common tool for pure working-capital financing.
Related terms: Cash Runway · Burn Rate · Growth Capital · Capital Stack
