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LiquidityQuick Ratio

What is the Quick Ratio (Acid Test)?

The Quick Ratio measures a company's ability to meet short-term obligations using only its most liquid assets -- excluding inventory (which can take time to sell). Also called the 'acid test ratio.' A Quick Ratio above 1.0 means the company can cover all current liabilities without selling inventory.

Formula

Quick Ratio = (Cash + Short-Term Investments + Accounts Receivable) / Current Liabilities (or: (Current Assets - Inventory) / Current Liabilities)

Why Exclude Inventory from Liquidity Analysis?

Inventory is included in current assets on the balance sheet, but it is the least liquid of those assets. A retailer facing financial stress cannot instantaneously convert its warehouse inventory to cash at full value -- a distressed sale requires markdowns, logistics, and time. In a genuine liquidity crunch, relying on inventory to meet payroll or debt obligations is dangerous. The quick ratio removes this uncertainty by focusing only on assets that can be converted to cash in days rather than weeks.

Accounts receivable quality is the other variable that matters. A quick ratio built on receivables from creditworthy customers with short payment terms is more reliable than one built on receivables from financially stressed buyers or with long collection cycles. In practice, analysts pair the quick ratio with Days Sales Outstanding (DSO) to confirm that receivables are genuinely liquid rather than a collection problem in disguise.

Analyze Working Capital

The quick ratio is one component of working capital analysis. Explore our glossary for related liquidity and efficiency metrics.

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Frequently Asked Questions

What is the quick ratio and how does it differ from the current ratio?+
Both ratios measure short-term liquidity by comparing liquid assets to current liabilities. The current ratio includes all current assets -- cash, receivables, inventory, and prepaid expenses. The quick ratio is stricter: it excludes inventory and prepaid expenses, keeping only cash, short-term investments, and accounts receivable. Because inventory may take weeks or months to convert to cash (and may need to be sold at a discount), the quick ratio gives a more conservative, realistic picture of immediate solvency.
What is a good quick ratio?+
The standard benchmark is above 1.0 -- meaning liquid assets can fully cover current liabilities without touching inventory. A quick ratio below 0.5 is a warning sign of potential near-term liquidity stress. A ratio above 2.0 is generally comfortable but may suggest underdeployed cash that could be returned to shareholders or invested for growth. As with all ratios, industry context matters: high-velocity businesses with reliable receivables can operate safely at lower quick ratios than slower-moving industries.
In which industries does the quick ratio matter most?+
Retailers and manufacturers carry large inventory balances, so their quick ratios look materially worse than their current ratios. A retailer with current ratio of 2.0 might have a quick ratio of only 0.8 once inventory is removed -- revealing that its apparent liquidity depends heavily on selling that inventory. Service businesses (software, professional services, financial companies) typically have quick ratios close to their current ratios because they carry little or no inventory. For capital-light tech companies, liquidity analysis focuses more on cash burn rate and runway than traditional ratios.
What is the difference between the quick ratio, cash ratio, and current ratio?+
These three ratios form a spectrum of liquidity conservatism. The current ratio (Current Assets / Current Liabilities) is the most permissive -- it includes inventory and prepaid expenses. The quick ratio excludes inventory and prepaid, keeping only cash and near-cash receivables. The cash ratio (Cash + Short-Term Investments / Current Liabilities) is the most conservative: it only counts cash and cash equivalents, excluding receivables that could theoretically become uncollectible. Banks and credit analysts often start with the cash ratio for the most stress-tested view of immediate liquidity.

Related Terms

Current Ratio

All current assets vs current liabilities

Working Capital

Current assets minus current liabilities

Days Sales Outstanding

Average collection period for receivables

Cash Conversion Cycle

Days to convert operations to cash

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