Direct Answer
The quick ratio (acid-test ratio) is (current assets minus inventory) divided by current liabilities, or sometimes (cash + short-term investments + accounts receivable) divided by current liabilities. It's a stricter liquidity measure than the current ratio because it excludes inventory, which may not be quickly convertible to cash at full value.
Key Takeaways
- The quick ratio measures whether a company's most liquid current assets can cover its current liabilities.
- It excludes inventory from the numerator, unlike the current ratio, which includes it.
- Two common formulas exist: current assets minus inventory, or the sum of cash, short-term investments, and accounts receivable -- both divided by current liabilities.
- What counts as a healthy quick ratio commonly varies by industry and business model, so there's no single universal threshold.
- The ratio is a single-date snapshot and depends on the quality of the receivables included, so it's typically used alongside other liquidity measures.
What Is the Quick Ratio?
The quick ratio, also known as the acid-test ratio, is a liquidity metric drawn from a company's balance sheet. It asks a narrow, practical question: if current liabilities came due right away, could the company cover them using only the assets it could convert to cash quickly -- without having to sell inventory first?
This makes the quick ratio a companion to the current ratio rather than a replacement for it. The current ratio divides all current assets by current liabilities, treating cash, receivables, and inventory as roughly equivalent in their ability to satisfy short-term obligations. The quick ratio disagrees with that assumption on one specific point: inventory. Because inventory generally has to be sold to a customer before it becomes cash, and because that sale can take time or require a price concession, the quick ratio removes it from the calculation entirely, leaving a narrower and more conservative liquidity picture.
Quick Ratio Formula
The quick ratio can be calculated two ways, and both are commonly used in practice:
| Approach | Formula |
|---|---|
| Subtraction method | (Current Assets − Inventory) ÷ Current Liabilities |
| Build-up method | (Cash + Short-Term Investments + Accounts Receivable) ÷ Current Liabilities |
Both formulas are attempting to isolate the same set of assets: cash on hand, short-term investments that can be liquidated quickly, and accounts receivable expected to be collected in the near term. When a company's current assets consist only of these items plus inventory -- with nothing else like prepaid expenses in the mix -- the two formulas produce the same result. When other current-asset line items are present, the two methods can diverge slightly, which is why it's worth noting which version a given source used.
Worked Example
Hypothetical example -- for education only.
Suppose a company reports the following on its balance sheet:
| Line item | Amount |
|---|---|
| Cash | $200,000 |
| Short-term investments | $100,000 |
| Accounts receivable | $250,000 |
| Inventory | $300,000 |
| Total current assets | $850,000 |
| Current liabilities | $400,000 |
Subtraction method: ($850,000 − $300,000) ÷ $400,000 = $550,000 ÷ $400,000 = 1.375.
Build-up method: ($200,000 + $100,000 + $250,000) ÷ $400,000 = $550,000 ÷ $400,000 = 1.375.
In this hypothetical case, both formulas agree because the company's only current assets are cash, short-term investments, accounts receivable, and inventory. The resulting quick ratio of 1.375 (often rounded to 1.38) means the company holds about $1.38 of quick assets for every $1.00 of current liabilities.
Interpreting the Quick Ratio
A quick ratio above 1.0 commonly indicates that a company's cash, short-term investments, and receivables together exceed its current liabilities -- suggesting it could meet near-term obligations without relying on selling inventory or raising new financing. A ratio below 1.0 can indicate the opposite: that quick assets alone wouldn't cover current liabilities, meaning the company would need to either sell inventory, collect receivables faster, or find another source of cash.
What counts as a strong or weak quick ratio varies by industry. A retailer that turns inventory over quickly and finances much of it with supplier credit can operate comfortably with a lower quick ratio, since inventory converts to cash relatively fast in that business. A capital-intensive or slower-turnover business may look for a higher cushion. Because of this variation, the quick ratio is most useful when compared against a company's own historical trend and against close industry peers, rather than judged against one fixed number.
Limitations & Common Mistakes
- Single-date snapshot: The quick ratio reflects balance sheet figures as of one reporting date and can shift meaningfully around seasonal peaks, large receivable collections, or one-time payments.
- Receivable quality isn't visible in the ratio: The formula treats all accounts receivable as equally collectible, but a portion may be past due or ultimately uncollectible, which the ratio alone doesn't reveal.
- Ignoring which formula was used: The subtraction method and the build-up method can produce different results when a company holds current assets beyond cash, short-term investments, receivables, and inventory -- comparing figures calculated with different formulas can be misleading.
- Treating one number as a verdict: A quick ratio in isolation doesn't capture the full liquidity picture. It's commonly used alongside the current ratio, the cash conversion cycle, and other working-capital measures rather than as a standalone conclusion.
- Assuming one threshold fits every industry: Because typical quick ratios vary by sector and business model, comparing a company only to a generic benchmark instead of its peers can lead to the wrong conclusion.
FAQ
What is the quick ratio?
The quick ratio, also called the acid-test ratio, is a liquidity measure calculated as (current assets minus inventory) divided by current liabilities, or sometimes as (cash + short-term investments + accounts receivable) divided by current liabilities. It is a stricter liquidity measure than the current ratio because it excludes inventory, which may not be quickly convertible to cash at full value.
How do you calculate the quick ratio?
Take total current assets from the balance sheet, subtract inventory, then divide by total current liabilities. An alternative version adds cash, short-term investments, and accounts receivable together and divides that sum by current liabilities. Both versions are meant to isolate assets a company could realistically convert to cash quickly.
What is considered a good quick ratio?
There is no single universal threshold for a good quick ratio -- what counts as healthy commonly varies by industry, business model, and how a company manages its receivables and payables. Analysts typically compare a company's quick ratio against its own historical trend and against direct industry peers rather than against a fixed number.
What's the difference between the quick ratio and the current ratio?
The current ratio divides all current assets by current liabilities, including inventory. The quick ratio removes inventory from the numerator because inventory can indicate a slower or less certain path to cash than assets like cash, short-term investments, or receivables, making the quick ratio a stricter test of near-term liquidity.
Why does the quick ratio exclude inventory?
Inventory is excluded because it may not be quickly convertible to cash at full value -- it typically has to be sold to a customer first, which can take time and may require a markdown from book value. Cash, short-term investments, and accounts receivable are generally viewed as closer to cash.
Can the quick ratio be misleading?
Yes. The quick ratio is a snapshot from a single balance sheet date and depends on the quality of the receivables and short-term investments included, so it can look strong even if some receivables are unlikely to be collected in full. It is commonly used alongside other liquidity and working capital measures rather than in isolation.
Which current assets are excluded from this ratio and why?
Inventory is excluded because converting it to cash requires selling it, which takes time and may require discounting, and prepaid expenses are typically excluded because they cannot be converted to cash at all. What remains is cash, short-term investments, and receivables. The exclusion is what distinguishes this measure from the broader current ratio.
How reliable are receivables as a liquid asset in this ratio?
The ratio treats receivables as near-cash, which assumes customers pay on schedule, and that assumption fails precisely when a company is under stress and its customers may be too. A company with a comfortable ratio built largely on receivables from a concentrated or troubled customer base has less liquidity than the figure suggests. Examining the ageing and concentration is what qualifies the ratio.
Does this ratio account for available credit facilities?
No. Undrawn facility capacity is a genuine liquidity resource that the ratio ignores entirely, since it appears nowhere on the balance sheet. A company with a modest ratio and a large undrawn facility can be more liquid than one with a strong ratio and no facility. Adding facility capacity to the assessment is necessary for a complete picture.
References
- SEC EDGAR -- full-text search and access to public company financial statement filings.
- SEC, "How to Read a 10-K" -- guidance on locating and interpreting balance sheet line items such as current assets and current liabilities within a company's annual report.
- FASB Accounting Standards Codification -- the authoritative source for U.S. GAAP classification of current assets and current liabilities used in balance sheet presentation.
- CFA Institute Research and Policy Center -- reference on liquidity ratio analysis and interpretation within broader financial statement analysis.