Working capital is the difference between a company's current assets, such as cash, receivables and inventory, and its current liabilities, such as supplier invoices, short-term debt and taxes due within a year. It measures how much short-term money the business has to run its day-to-day operations after covering the bills that will soon fall due.
Working capital appears on the balance sheet rather than the income statement, so it describes a position at a point in time, not performance over a period. Analysts read it alongside the cash conversion cycle, which measures how long cash is tied up in operations, and treasurers manage it day to day through cash management. Efforts to free cash from it are often called working capital optimization.
Working capital in plain terms
Imagine a market stall. Each morning the owner needs money for stock and change in the till, and some customers on account still owe for last week. Against that, the wholesaler is owed for yesterday's delivery. What is left after setting aside what the stall owes in the next few weeks is its working capital: the cushion that lets it buy tomorrow's stock without borrowing.
If customers pay faster, or the wholesaler gives longer to pay, the stall needs less of its own money tied up. If stock sits unsold for weeks, more money is locked away. Large companies face the same balance, only with warehouses, invoices and credit terms instead of a till.
Formula and example
The basic calculation is:
Current assets are those expected to be turned into cash or used within the normal operating cycle or twelve months; current liabilities are those due for settlement within the same period. Under IFRS these definitions are set in IAS 1, which IFRS 18 replaces for reporting periods beginning on or after 1 January 2027; US GAAP uses a similar operating-cycle test.
A worked example with round numbers:
| Current assets | Amount ($) | Current liabilities | Amount ($) |
|---|---|---|---|
| Cash and cash equivalents | 100,000 | Accounts payable | 180,000 |
| Accounts receivable | 250,000 | Short-term borrowings | 80,000 |
| Inventory | 150,000 | Accrued expenses and taxes | 40,000 |
| Total | 500,000 | Total | 300,000 |
Working capital is . The related current ratio is : the company holds $1.67 of current assets for every dollar of current liabilities. The quick ratio leaves out inventory, which is slower to turn into cash: .
Variants of the measure
Different users define working capital slightly differently:
- Net working capital. The full calculation above, used in credit analysis and loan covenants.
- Operating (trade) working capital. Receivables plus inventory minus payables, leaving out cash and debt. It isolates the money tied up in trading and is the version most often used in valuation and treasury targets.
- Negative working capital. Some businesses, such as large grocers or subscription services, collect cash from customers before paying suppliers, or hold deferred revenue as a liability. Their current liabilities exceed current assets, which can be a sign of strength rather than distress.
Managing working capital
Three levers drive operating working capital, and each sits with a different team:
- Receivables. Credit checks, clear invoices, prompt cash application and follow-up of overdue accounts shorten collection time. Some firms sell invoices through factoring or other forms of trade finance.
- Inventory. Better demand planning, fewer slow-moving items and supplier-held stock reduce the cash locked in warehouses.
- Payables. Negotiating supplier payment terms and paying on the due date rather than early keep cash longer. Supplier finance programmes, in which a bank pays the supplier early and the buyer pays the bank later, extend this further; since 2024 IFRS reporters must disclose such arrangements under amendments to IAS 7 and IFRS 7, and US GAAP has similar disclosure rules.
Pushing any lever too far has costs. Stretching suppliers can harm smaller firms that depend on prompt payment, and laws such as the UK's late payment legislation and the EU Late Payment Directive limit how long payment can be delayed. Cutting inventory too far risks running out of stock.
Why lenders and analysts watch it
Working capital links profit to cash. A growing company often needs more working capital because receivables and inventory rise with sales, so it can show rising net income while its cash flow falls. The statement of cash flows shows this as changes in working capital within operating cash flow.
Lenders use working capital to judge liquidity and often set minimum levels or ratios in loan covenants. Persistent shortfalls point to liquidity risk, while very high working capital may mean idle cash or slow collections. In acquisitions, the buyer and seller usually agree a target level of working capital and adjust the price if the actual level at completion differs.