Quick Ratio (Acid-Test Ratio)
Key Takeaways
- Quick Ratio = (Cash + Marketable Securities + Accounts Receivable) / Current Liabilities
- Excludes inventory and prepaid expenses for a stricter liquidity measure
- Also called the acid-test ratio
- A ratio of 1.0 or higher is generally considered adequate
Definition
The quick ratio, also known as the acid-test ratio, measures a company's ability to meet its short-term obligations using only its most liquid assets — cash, marketable securities, and accounts receivable. By excluding inventory and prepaid expenses (which are included in the current ratio), the quick ratio provides a more conservative assessment of liquidity.
The term "acid test" comes from the historical practice of testing metals with acid to determine if they were genuine gold. Similarly, the quick ratio is a stringent test of whether a company can survive a short-term liquidity crunch without selling inventory or relying on future sales.
The quick ratio is particularly important for companies in industries where inventory may be slow to sell or difficult to liquidate at full value — such as manufacturing, real estate, or fashion retail.
How It Works
Quick Ratio = (Cash + Marketable Securities + Accounts Receivable) / Current Liabilities. Alternatively: Quick Ratio = (Current Assets - Inventory - Prepaid Expenses) / Current Liabilities.
Interpretation: Below 0.5 — potentially serious liquidity risk. 0.5-1.0 — moderate, may be acceptable depending on industry. 1.0-1.5 — healthy, can cover short-term obligations with liquid assets. Above 1.5 — very strong liquidity position.
The quick ratio is most useful for companies with significant inventory. For service companies with minimal inventory, the quick ratio and current ratio may be nearly identical. For manufacturing or retail companies, the difference between the two ratios reveals how much liquidity is tied up in inventory.
Example
Compare two companies: Alphabet (GOOGL), a service company, has current assets of $164B (including $25B cash, $85B short-term investments, $40B receivables, minimal inventory) and current liabilities of $81B. Its current ratio is 2.03 and quick ratio is 1.95 — nearly identical because Alphabet has virtually no inventory. Now consider Ford (F) with $113B current assets (including $26B cash, $43B receivables, $16B inventory) and $107B current liabilities. Ford's current ratio is 1.06 but its quick ratio is only 0.83, revealing that a significant portion of its liquidity is tied up in inventory.
Why It Matters
The quick ratio reveals the true liquidity position when inventory might not be easily convertible to cash. During economic downturns, inventory values can decline (requiring write-downs), sales can slow (inventory sits longer), and suppliers may demand faster payment. Companies with strong quick ratios can survive these pressures; those relying on inventory to cover obligations may face trouble.
Credit analysts and lenders often prefer the quick ratio to the current ratio because it provides a worst-case liquidity assessment. If a company can cover its current liabilities without selling inventory, it has genuine liquidity strength.
Advantages
- More conservative and realistic liquidity measure than current ratio
- Focuses on truly liquid assets that can be converted to cash quickly
- Especially valuable for inventory-heavy businesses
- Widely used in credit analysis and lending decisions
Limitations
- May be overly conservative for businesses with highly liquid inventory
- Accounts receivable collectibility is assumed but not guaranteed
- Industry differences limit cross-sector comparison
- Does not account for timing of cash flows within the period
Frequently Asked Questions
Related Terms
Browse more definitions in the financial terms glossary.