Working capital and liquidity ratios
Working capital = current assets − current liabilities
Working capital is the dollar amount of liquid resources your business controls after covering all short-term obligations. A positive number means you have a buffer; a negative number (working capital deficit) means current liabilities exceed liquid assets.
Current ratio
Current ratio = current assets ÷ current liabilities
The current ratio expresses the same idea as a multiple. A 1.5 current ratio means you have $1.50 in current assets for every $1.00 of current liabilities. Lenders prefer ratios above 1.0; a ratio below 1.0 signals that the business cannot cover short-term obligations with available liquid assets.
Quick ratio (acid-test)
Quick ratio = (current assets − inventory) ÷ current liabilities
The quick ratio strips out inventory because inventory may take weeks or months to convert to cash. It answers the stricter question: can the business cover its short-term obligations without selling any inventory? Businesses that carry large amounts of inventory — retailers, manufacturers, distributors — should watch this ratio closely.
Lender thresholds
| Current ratio | Interpretation | Lender view |
|---|---|---|
| Below 1.0 | Working capital deficit | Concern; may require personal guarantee or additional collateral |
| 1.0–1.5 | Positive but thin | Acceptable for some lenders; borderline for SBA and banks |
| 1.5–2.0 | Standard liquidity | Meets most lender requirements for term loans and lines of credit |
| Above 2.0 | Strong liquidity | Preferred; may support larger credit facilities |
Worked examples
Example 1 — healthy retail business: A hardware store has $180,000 in current assets (cash $40,000, receivables $20,000, inventory $100,000, prepaid $20,000) and $100,000 in current liabilities (accounts payable $70,000, short-term loan $30,000).
| Metric | Calculation | Result |
|---|---|---|
| Working capital | $180,000 − $100,000 | $80,000 |
| Current ratio | $180,000 ÷ $100,000 | 1.80 |
| Quick ratio | ($180,000 − $100,000) ÷ $100,000 | 0.80 |
The current ratio of 1.80 looks healthy. But the quick ratio of 0.80 reveals that the business depends on converting inventory to cash to cover its short-term obligations. This is normal for retail, but it means a slow sales period could create a liquidity squeeze.
Example 2 — working capital deficit: A restaurant has $60,000 in current assets (mostly prepaid supplies and small cash balance) and $90,000 in current liabilities (unpaid vendors, line of credit balance, upcoming payroll).
| Metric | Calculation | Result |
|---|---|---|
| Working capital | $60,000 − $90,000 | −$30,000 |
| Current ratio | $60,000 ÷ $90,000 | 0.67 |
| Assets needed for 1.5× | $90,000 × 1.5 | $135,000 |
| Shortfall | $135,000 − $60,000 | $75,000 |
A current ratio of 0.67 would typically concern any lender. The restaurant would need to either increase liquid assets by $75,000, reduce current liabilities to $40,000 (which would put the current ratio at 1.5×), or some combination of both.
Assumptions and limitations
- Current assets must be truly current. Include only assets expected to convert to cash within 12 months. Long-term receivables, equipment, and real estate are not current assets. Overstating current assets inflates the ratio misleadingly.
- Inventory quality varies. The quick ratio assumes inventory is hard to liquidate quickly. In reality, some inventory is very liquid (a car dealership) while some is nearly worthless (obsolete parts). The ratio is an approximation, not a guarantee of convertibility.
- Industry norms differ widely. Utilities and subscription businesses collect cash before delivering service, so they can operate with current ratios below 1.0 without distress. Manufacturers and distributors often need higher ratios. Compare your ratio to industry benchmarks, not just the generic thresholds shown here.
- Point-in-time snapshot. Working capital fluctuates with seasonal patterns, invoice timing, and inventory cycles. A single ratio from a balance sheet date may not reflect normal operating conditions. Lenders often review an average over several periods.
Frequently asked questions
- What is a good current ratio for a small business?
- Most lenders and accountants consider 1.5 to 2.0 healthy for a small business. Below 1.0 is a warning sign. Above 3.0 may suggest that excess cash is sitting idle instead of being invested in growth. The right number depends on your industry — service businesses can sustain lower ratios than manufacturers.
- How does working capital affect loan eligibility?
- Lenders use working capital alongside the debt service coverage ratio (DSCR) to assess short-term and long-term repayment capacity. DSCR answers "can the business generate enough income to make loan payments?"; working capital answers "does the business have enough liquid assets to survive a rough quarter?". Both matter. A strong DSCR with a weak current ratio suggests an income-generating business that is poorly managed for cash flow.
- What's the difference between the current ratio and the quick ratio?
- Both are liquidity ratios. The current ratio includes all current assets, including inventory. The quick ratio (also called the acid-test ratio) excludes inventory on the theory that inventory takes time to sell and may not convert to cash at book value. The quick ratio is a more conservative measure. For service businesses with little inventory, the two ratios will be nearly identical.
- How can I improve my working capital?
- Six levers: (1) accelerate collections — invoice faster, offer early-payment discounts; (2) extend payables — negotiate longer terms with suppliers; (3) reduce inventory — lean purchasing, just-in-time ordering; (4) inject equity — owner capital contributions or investor funding; (5) convert short-term debt to long-term — refinancing moves an obligation out of current liabilities; (6) price a bridge draw with the business line of credit calculator so the weekly payments fit before you apply.
Sources
- Investopedia — "Working Capital: Formula, Components, and Limitations" (accessed 2026-10-04)
- Corporate Finance Institute — "Current Ratio" (accessed 2026-10-04)