Quick Ratio (Acid Test)

Accounts Receivable Dictionary

What is the quick ratio?

The quick ratio measures whether a business can pay its short-term liabilities using only its most liquid assets, leaving out inventory. It is calculated as quick assets divided by current liabilities. Quick assets are cash, marketable securities and accounts receivable: the things you could turn into cash quickly. A result of 1.0 or higher means the business could clear its current debts without selling a single item of stock.

It is also called the acid-test ratio, and the two names mean exactly the same calculation. The quick ratio is one of the first numbers a lender, supplier or investor looks at, because it answers a blunt question: if the bills all landed at once, could you cover them from liquid assets alone? By excluding inventory, which can be slow or hard to sell at full price, it gives a tougher, more honest read of short-term financial health than the current ratio.

Key takeaways

Liquidity without stock.Quick assets divided by current liabilities. It excludes inventory on purpose.

1.0 is the line.At or above 1.0, liquid assets cover current debts. Below it, you may have to sell stock or borrow.

Receivables drive it.If customers pay slowly, your quick assets are stuck and the ratio flatters real liquidity.

Quick ratio formula and how to calculate it

The quick ratio formula is (cash plus marketable securities plus accounts receivable) divided by current liabilities. A common shortcut is (current assets minus inventory) divided by current liabilities. Both land in the same place: liquid assets over the debts due within a year. Enter your figures below to see the ratio and what it signals.

Your figures

$
$
$
$

Quick assets exclude inventory. General information, not financial advice.

Quick ratio 1.25 $100,000 in quick assets covers $80,000 of current liabilities.

Worked through: a business holds 40,000 in cash, 10,000 in marketable securities and 50,000 in receivables, giving 100,000 of quick assets. Against 80,000 of current liabilities, that is a quick ratio of 1.25, so it has 1.25 of liquid assets for every 1.00 owed in the short term. Inventory never enters the sum, which is the whole point of the measure.

What is a good quick ratio?

A quick ratio of 1.0 or higher is generally considered healthy, meaning a business can meet its short-term obligations from liquid assets alone. Below 1.0 suggests it might need to sell inventory or raise finance to cover what it owes. But context beats the headline number, and the band below is a loose guide rather than a hard rule.

Below 1.0Worth a closer look

Liquid assets do not fully cover current debts, so the business may lean on selling stock or borrowing. Fine for fast-inventory retailers, a warning for most others.

1.0 to 2.0Comfortable for most

Liquid assets cover short-term obligations with room to spare. The zone many analysts treat as healthy across most industries.

Above 2.0Question idle capital

Lots of cash and uncollected receivables sitting unused. Safe, but money may be parked instead of funding growth.

Context shifts where the line sits. Supermarkets and other fast-inventory retailers often run well below 1.0 quite safely, because stock turns into cash daily and suppliers extend generous terms, while a consultancy with no inventory should comfortably clear 1.0. Just as telling is the direction of travel: a ratio sliding quarter on quarter, even from a healthy start, can be an early warning that cash is draining or short-term debt is building faster than liquid assets. Read it alongside other liquidity ratios rather than on its own.

Quick ratio vs current ratio

The difference is inventory: the current ratio includes it among current assets, while the quick ratio excludes it. That single change makes the quick ratio the stricter of the two. The current ratio asks "can we cover short-term debts with all current assets?", while the quick ratio asks the harder question, "can we cover them without relying on selling stock?".

The gap between the two ratios is itself informative. If a company's current ratio looks comfortable but its quick ratio is weak, a large share of its liquidity is locked up in inventory, which is risky if that stock is slow-moving or seasonal. A small gap means the business is not heavily inventory-dependent. The strictest cousin is the cash ratio, which goes one step further and excludes receivables too, leaving only cash and securities. Reading the three together, from current to quick to cash, shows how liquidity holds up as you strip out each less-certain asset.

MeasureFormulaWhat it tells you
Quick ratio (acid test)(Cash + securities + receivables) / current liabilitiesCan short-term debts be met without selling inventory. The stricter test.
Current ratioCurrent assets / current liabilitiesCan short-term debts be met from all current assets, inventory included.
Cash ratio(Cash + securities) / current liabilitiesThe strictest test: cover debts from cash alone, excluding receivables too.

Why the quick ratio matters for accounts receivable

Accounts receivable are usually the largest slice of quick assets, so the quick ratio is only as trustworthy as your receivables are collectible. The formula treats every dollar of receivables as good as cash, but that assumes customers actually pay. If a chunk of your receivables is overdue or unlikely to be recovered, the quick ratio will overstate your real liquidity. Two businesses with an identical 1.2 ratio can be in very different shape: one collecting on time, the other sitting on receivables that are months late.

Read the ratio next to receivable quality

Slow collections quietly erode liquidity even when the ratio looks fine on paper. The practical move is to read the quick ratio next to the quality of your receivables: their aging, overdue balances and how fast cash is actually arriving. Tightening collections converts those receivables into genuine cash, which is what the ratio is really trying to measure. Clear accounts receivable reporting shows you that picture, and stronger net working capital usually shows up as a healthier quick ratio. The throughline is the one that runs across all of AR: close the gap between invoice and payment, and the liquidity the ratio measures becomes real rather than theoretical.

The cautious refinement: discount your receivables

Some finance teams add a cautious refinement. They discount receivables before dropping them into the formula, counting only the portion they genuinely expect to collect on time and stripping out balances that are badly overdue or already provided for as doubtful. It is a small adjustment, but it turns the quick ratio from a tidy textbook figure into an honest measure of the cash you could actually lay hands on if every short-term bill arrived at once.

How to improve a low quick ratio

You raise the quick ratio by lifting quick assets or trimming current liabilities, and for most businesses the fastest lever is collecting receivables sooner. Money owed by customers only counts toward liquidity once it actually arrives, so shortening the time to get paid moves cash into the numerator where it does real work.

Levers that lift the ratio

Collect receivables soonerFaster reminders, clearer terms and a tidy follow-up cadence turn aged receivables into bankable cash without raising a single new invoice.

Hold a sensible cash bufferKeep enough liquid cash to be safe, without tipping into hoarding for its own sake.

Convert slow-moving inventoryTurning stock that is not selling into cash shifts value into quick assets.

Renegotiate short-term debtMoving short-term obligations into longer terms trims the denominator.

The mistake is chasing the number for its own sake by hoarding idle cash, which props up the ratio while starving the business of investment. The healthier path is to keep liquid assets genuinely liquid: collect on time, hold enough cash to be safe, and avoid stacking up short-term obligations you cannot comfortably cover.

Frequently asked questions
What is the quick ratio?
The quick ratio measures whether a business can pay its short-term liabilities using only its most liquid assets, leaving out inventory. It is calculated as quick assets, meaning cash, marketable securities and receivables, divided by current liabilities. It is also known as the acid-test ratio.
What is the quick ratio formula?
The quick ratio formula is (cash plus marketable securities plus accounts receivable) divided by current liabilities. A common shortcut is (current assets minus inventory) divided by current liabilities. For example, 100,000 of quick assets against 80,000 of current liabilities gives a ratio of 1.25.
What is a good quick ratio?
A quick ratio of 1.0 or higher is generally considered healthy, meaning liquid assets can cover current liabilities. Below 1.0 may signal reliance on selling inventory. The right level depends on the industry, so compare against peers and watch the trend rather than a single reading.
What is the difference between the quick ratio and the current ratio?
The current ratio includes inventory among current assets, while the quick ratio excludes it. That makes the quick ratio the stricter measure. A comfortable current ratio paired with a weak quick ratio means a lot of liquidity is tied up in inventory.
Is the quick ratio the same as the acid-test ratio?
Yes. The quick ratio and the acid-test ratio are two names for the same calculation: liquid assets excluding inventory, divided by current liabilities. The terms are used interchangeably in finance.
Keep reading

Are you making these
5 invoicing mistakes?

Don't let these critical mistakes hurt your
collections - See how to fix them, today!