What is Working Capital?
Working capital measures a company’s short-term liquidity—its ability to meet current obligations (debts due within one year) using current assets (assets convertible to cash within one year). It’s essential for day-to-day operations and financial health.
Working Capital Formula
$$\text{Working Capital} = \text{Current Assets} - \text{Current Liabilities}$$
Example Calculation
| Item | Amount |
|---|---|
| Current Assets | |
| Cash | $50M |
| Accounts Receivable | $80M |
| Inventory | $70M |
| Total Current Assets | $200M |
| Current Liabilities | |
| Accounts Payable | $60M |
| Short-term Debt | $40M |
| Accrued Expenses | $20M |
| Total Current Liabilities | $120M |
| Working Capital | $80M |
Positive vs. Negative Working Capital
| Working Capital | Meaning |
|---|---|
| Positive | Can cover short-term obligations |
| Negative | Current liabilities exceed current assets |
| Zero | Exactly matched |
Current Ratio
Expresses working capital as a ratio:
$$\text{Current Ratio} = \frac{\text{Current Assets}}{\text{Current Liabilities}}$$
| Current Ratio | Interpretation |
|---|---|
| Above 2.0 | Very liquid, potentially inefficient |
| 1.5 - 2.0 | Healthy |
| 1.0 - 1.5 | Adequate |
| Below 1.0 | May face liquidity issues |
Quick Ratio (Acid Test)
More conservative—excludes inventory:
$$\text{Quick Ratio} = \frac{\text{Current Assets} - \text{Inventory}}{\text{Current Liabilities}}$$
Useful when inventory is slow-moving or hard to liquidate.
Components of Working Capital
Current Assets
| Asset | Description |
|---|---|
| Cash & Equivalents | Immediately available funds |
| Accounts Receivable | Money owed by customers |
| Inventory | Goods for sale |
| Prepaid Expenses | Payments for future services |
| Short-term Investments | Liquid securities |
Current Liabilities
| Liability | Description |
|---|---|
| Accounts Payable | Money owed to suppliers |
| Short-term Debt | Loans due within one year |
| Accrued Expenses | Incurred but not yet paid costs |
| Deferred Revenue | Prepaid by customers |
| Current Portion of Long-term Debt | Principal due this year |
Working Capital Cycle
The cash conversion cycle shows how quickly capital flows through the business:
$$\text{Cash Conversion Cycle} = \text{DIO} + \text{DSO} - \text{DPO}$$
Where:
- DIO: Days Inventory Outstanding
- DSO: Days Sales Outstanding
- DPO: Days Payable Outstanding
Example
- Inventory held 45 days
- Receivables collected in 30 days
- Suppliers paid in 35 days
- Cash Cycle = 45 + 30 - 35 = 40 days
Working Capital by Industry
| Industry | Typical Working Capital |
|---|---|
| Retail | High inventory needs |
| Manufacturing | Moderate to high |
| Software/SaaS | Low (subscription model) |
| Services | Low (few inventory needs) |
| Grocery | Often negative (quick inventory turn) |
Negative Working Capital Can Be Good
Some efficient businesses operate with negative working capital:
- Amazon: Collects from customers before paying suppliers
- Costco: Quick inventory turnover
- Subscription businesses: Prepaid revenue
Why Working Capital Matters
1. Liquidity
Can the company pay its bills?
2. Operational Efficiency
How efficiently is capital being used?
3. Growth Capacity
Available capital to fund expansion.
4. Credit Access
Lenders evaluate working capital for loan decisions.
Working Capital Management
Too Little Working Capital
- Difficulty paying suppliers
- Missed opportunities
- Higher borrowing costs
- Potential insolvency
Too Much Working Capital
- Capital sitting idle
- Lower return on assets
- Possibly inefficient operations
Improving Working Capital
Increase Current Assets
- Accelerate receivables collection
- Manage inventory levels
- Build cash reserves
Decrease Current Liabilities
- Negotiate longer payment terms
- Refinance short-term debt to long-term
- Manage accruals
Working Capital in Cash Flow
Changes in working capital affect operating cash flow:
| Change | Cash Flow Impact |
|---|---|
| Inventory increases | Negative (cash used) |
| Receivables increase | Negative (cash tied up) |
| Payables increase | Positive (cash preserved) |
Related Financial Terms
This glossary entry is for educational purposes only and does not constitute investment advice.