Quick answer: Working capital = current assets (cash, receivables, inventory) minus current liabilities (accounts payable, short-term debt). Working capital management is the ongoing process of ensuring the business has enough liquidity to meet short-term obligations while not holding excessive idle cash. A business can be profitable on paper and still go bankrupt from poor working capital management — cash timing kills more small businesses than lack of profitability.
The Three Levers of Working Capital
Accounts receivable (AR): The faster you collect from customers, the more cash you have. Track days sales outstanding (DSO) — total AR divided by average daily sales. A DSO of 45 days when your terms are Net 30 means customers are paying 15 days late. Strategies to improve: invoice immediately upon delivery, offer 1–2% early payment discounts, implement late fees, and use invoice financing or factoring for large receivable balances. Inventory: Calculate inventory turnover — cost of goods sold divided by average inventory. Excess inventory ties up cash. Accounts payable (AP): Negotiate extended payment terms with suppliers — Net 45 or Net 60 — without damaging relationships. This is essentially interest-free financing.
The Cash Conversion Cycle
The cash conversion cycle (CCC) is the number of days it takes to convert resources into cash flow from sales: CCC = Days Inventory Outstanding + Days Sales Outstanding – Days Payable Outstanding. A lower (or negative) CCC means the business collects cash faster than it pays suppliers. Amazon's CCC is famously negative — they collect before they pay suppliers. For a typical service business with no inventory, CCC simplifies to DSO minus DPO. A contractor with 60-day DSO and 30-day payables has a 30-day CCC — meaning every dollar of revenue takes 30 days to turn into cash. Identifying and reducing the CCC is one of the highest-ROI financial improvements a business can make.
When Working Capital Becomes a Crisis
Businesses hit working capital crises during fast growth (the "growth trap" — you need cash for inventory, payroll, and production before customers pay), seasonal cycles (retail before holiday season), or unexpected receivable slowdowns. Warning signs: using your line of credit to pay payroll, delaying supplier payments, or drawing on personal funds. Solutions include: invoice factoring or AR financing, a business line of credit established before you need it, accelerating collections, and delaying non-critical capital expenditures. The best time to arrange a business line of credit is when your financials are strong — not when you're in a cash crunch. Work with your banker and CPA to build a working capital forecast before problems emerge.
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