Liquidity Ratios: Formulas, Examples, and How to Interpret Them

Liquidity ratios measure whether a company can pay its current liabilities, the obligations due within one year or the operating cycle, if longer. The three core measures are the current ratio (current assets ÷ current liabilities), the quick ratio (cash + short-term investments + net receivables, divided by current liabilities), and current cash debt coverage (operating cash flow ÷ average current liabilities).

These measures matter because sales and reported profit do not guarantee cash will arrive before bills are due.

Why these three? This lesson follows the ratio framework in Wiley’s Intermediate Accounting (Appendix 4B), which groups the current ratio, quick ratio, and current cash debt coverage as liquidity ratios. Many finance guides list the cash ratio as the third measure instead, so we cover it too, along with how the CPA and CMA exams test these ratios.

Video lesson with Professor Farhat

Professor Farhat explains the current ratio, the quick ratio, and current cash debt coverage, then shows how lenders use them in loan agreements. Jump to the current ratio at 1:46, the quick ratio at 7:23, current cash debt coverage at 10:13, standards for comparison at 15:00, and debt covenants at 16:22.

Watch the complete Farhat Lectures video on YouTube.

Liquidity ratios: the 3 formulas

A ratio divides one amount by another. The numerator is the amount above the division line; the denominator is the amount below it. Identify both before reaching for a calculator.

Current assets and current liabilities come from the classified balance sheet. Operating cash flow comes from the statement of cash flows. In these simplified formulas, cash includes cash equivalents when reported together, and short-term investments are readily marketable. Avoid double-counting the same cash equivalent in both categories.

Current ratio vs. quick ratio

The current ratio includes inventory and prepaid expenses when they are classified as current assets. The quick ratio excludes them: inventory generally must be sold and collected, while prepaid insurance ordinarily provides future services rather than cash for creditors.

Use net accounts receivable, after the credit-loss allowance. Including the gross amount would count balances the company does not expect to collect. Also inspect restrictions: cash unavailable for general payments may make a reported balance less useful for assessing liquidity.

Because quick assets are a subset of current assets, the quick ratio can never be larger than the current ratio when both use the same current liabilities. A wide gap signals that inventory, prepayments, or other excluded current assets make up much of the current-asset total. The gap alone does not prove financial distress.

What Is the Cash Ratio?

The cash ratio is the strictest liquidity measure. It counts only cash and readily marketable short-term investments, leaving out receivables as well as inventory and prepaid expenses.

Cash ratio = (Cash and cash equivalents + Short-term investments) ÷ Current liabilities

Using the Cedar Supply numbers from the worked example below: ($18,000 + $12,000) ÷ $60,000 = 0.50. Cedar has 50 cents of cash and near-cash for every $1 of current liabilities. That is lower than its quick ratio of 1.00 because the $30,000 of receivables still has to be collected.

The cash ratio is not part of the Wiley framework this lesson follows, but the CMA exam tests it, and many analysts use it as a worst-case check.

Worked example: compare all three measures

Hypothetical example. Cedar Supply reports year-end cash of $18,000, readily marketable short-term investments of $12,000, net receivables of $30,000, inventory of $48,000, and prepaid expenses of $12,000. Current liabilities are $60,000 at year-end and $40,000 at the beginning of the year. Annual operating cash flow is $25,000.

The current ratio of 2.00 can also be written as 2:1 or 200%. These are equivalent expressions. Current cash debt coverage of 0.50 is 50%; it does not mean liabilities were actually repaid by 50% during the year.

How Do Transactions Change the Current Ratio?

Exam questions often ask what happens to a ratio after a single transaction. Change the numerator and denominator, then recalculate.

Start with Cedar Supply: current assets of $120,000 and current liabilities of $60,000, a current ratio of 2.00.

• Pay $20,000 of accounts payable with cash. Both sides fall by $20,000: $100,000 ÷ $40,000 = 2.50. The ratio rises.
• Buy $10,000 of inventory on account instead. Both sides rise by $10,000: $130,000 ÷ $70,000 = 1.86. The ratio falls. The quick ratio falls too, from 1.00 to $60,000 ÷ $70,000 = 0.86, because inventory is not a quick asset.
• Collect $5,000 of receivables. Cash goes up and receivables go down by the same amount, so neither the current ratio nor the quick ratio changes.

Now take a company with a current ratio below 1: current assets of $50,000 and current liabilities of $100,000, a ratio of 0.50. Paying $20,000 of payables with cash gives $30,000 ÷ $80,000 = 0.375, about 0.38. This time the ratio falls.

The pattern: equal decreases on both sides push the ratio away from 1, and equal increases pull it toward 1. A ratio of exactly 1 does not change.

Why does cash debt coverage use an average?

The current and quick ratios compare two balances at the same date. Current cash debt coverage combines a full year of cash generation with liabilities that existed throughout that year. An average better aligns the balance with the period.

Average current liabilities = (Beginning current liabilities + Ending current liabilities) ÷ 2. This simple average is a practical approximation. If seasonal changes are large and more detailed balances are supplied, use the averaging method requested by the problem.

Do not substitute net income for operating cash flow. A credit sale can increase profit while leaving cash unchanged. To see how net income is adjusted to operating cash flow, review the indirect method. See profitability ratios for the earnings perspective. For the similar formula using average total liabilities, see coverage ratios.

How to interpret liquidity ratios responsibly

Compare the same company over time and businesses with similar operating patterns. A grocery retailer collecting cash immediately may operate differently from a manufacturer holding inventory for months. The SEC’s financial-statement guide explains why desirable ratios differ by industry.

A higher current ratio can reflect more cash, but it can also reflect slow-moving inventory or overdue receivables. Pair the balance-sheet measures with activity ratios that examine inventory and receivables. Read due dates, restrictions, and cash-flow patterns before concluding that obligations can be paid on time.

A ratio below 1 is a reason to investigate, not a stand-alone bankruptcy prediction. A ratio above 1 also provides no guarantee: timing and asset quality still matter.

What Is a Good Liquidity Ratio?

There is no single number that is good for every company. Many textbooks and review courses mention traditional rules of thumb, such as a current ratio around 2:1 or a quick ratio around 1:1, but the SEC’s guide notes that desirable ratios vary by industry. Compare a company with its own trend and with businesses that operate the same way.

Higher is not always better. A very high current ratio can mean cash sitting idle or too much inventory, money that could be earning a return elsewhere.

Common calculation mistakes

Do not subtract only inventory from current assets if prepayments or other nonquick assets are present. Add the qualifying quick assets directly. Do not use ending liabilities in the cash-flow ratio when the required average is available. Finally, keep the denominator current: total liabilities belong in a different coverage measure.

Exam tip: Some questions give total current assets and ask for the quick ratio. You can work backward: quick assets = current assets − inventory − prepaid expenses − any other nonquick current assets. With Cedar Supply, $120,000 − $48,000 − $12,000 = $60,000, the same quick assets you get by adding cash, investments, and receivables directly.

How Are Liquidity Ratios Tested on the CPA and CMA Exams?

CPA exam: Under the AICPA’s 2026 CPA Exam Blueprints, the Financial Accounting and Reporting (FAR) core section tests the calculation of liquidity ratios, including the current and quick ratios. The Business Analysis and Reporting (BAR) discipline section tests the interpretation of liquidity, profitability, and solvency ratios. BAR Area I, Business Analysis, carries 40 to 50% of that section; this weighting applies to the entire area, not to ratio analysis alone.

CMA exam: The Institute of Management Accountants (IMA) tests liquidity in CMA Part 2. Candidates calculate and interpret the current ratio, quick (acid-test) ratio, cash ratio, cash flow ratio, and net working capital ratio, and explain how changes in current assets, current liabilities, or sales affect them.

Watch the denominator. The CMA cash flow ratio is commonly computed as operating cash flow ÷ current liabilities at year-end, while current cash debt coverage in this lesson uses average current liabilities. Always use the denominator the question gives you.

Practice questions with explanations

1. Which assets belong in the quick ratio?

A company has cash $9,000, short-term investments $6,000, net receivables $15,000, inventory $20,000, and current liabilities $25,000.

Answer: Quick assets are $30,000, so the quick ratio is $30,000 ÷ $25,000 = 1.20. Inventory is excluded.

2. Calculate current cash debt coverage.

Annual operating cash flow is $36,000. Current liabilities begin at $50,000 and end at $70,000.

Answer: The average is $60,000, so coverage is $36,000 ÷ $60,000 = 0.60, or 60%.

3. Is a current ratio of 2.4 always stronger than 1.8?

Answer: No. The 2.4 ratio may include obsolete inventory or slow collections. Compare asset composition, due dates, operating cash flows, and industry conditions before reaching a conclusion.

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Key Takeaways

• Liquidity ratios measure whether a company can pay obligations due within about a year.
• Current ratio = Current assets ÷ Current liabilities. It is the broadest measure.
• Quick ratio = (Cash + Short-term investments + Net receivables) ÷ Current liabilities. It excludes inventory and prepaid expenses.
• Cash ratio = (Cash and cash equivalents + Short-term investments) ÷ Current liabilities. It is the strictest measure.
• Current cash debt coverage = Net cash provided by operating activities ÷ Average current liabilities. It uses a full year of cash generation.
• There is no universal “good” ratio. Compare the company with its own trend and with similar businesses.

Frequently asked questions

Is the acid-test ratio the same as the quick ratio?

Answer: Yes. Both names describe the narrower liquidity measure using cash, short-term investments, and net receivables in this lesson.

Is working capital a ratio?

Answer: No. Working capital is current assets minus current liabilities, expressed in dollars. The current ratio divides the two balances.

Are liquidity and profitability the same?

Answer: No. Liquidity is about paying bills on time; profitability is about earnings. A company can report a profit while still waiting for customers to pay.

What Is the Difference Between Liquidity and Solvency?

Answer: Liquidity is about paying obligations due within about a year. Solvency is about meeting all obligations, including long-term debt. Solvency measures such as debt to assets appear in the coverage ratios lesson.

Can a Current Ratio Be Too High?

Answer: Yes. A very high current ratio can signal idle cash, excess inventory, or slow collections. Assets tied up there are not earning a return.

What Is the Difference Between the Quick Ratio and the Cash Ratio?

Answer: The quick ratio includes net receivables; the cash ratio leaves them out and counts only cash and short-term investments. For Cedar Supply, the quick ratio is 1.00 and the cash ratio is 0.50.

Does Paying Accounts Payable Change the Current Ratio?

Answer: Usually, yes. Paying a current liability with cash raises a current ratio that is above 1, lowers one that is below 1, and leaves a ratio of exactly 1 unchanged.

Sources and learning context

Lesson scope: Wiley Intermediate Accounting, Appendix 4B: Ratio Analysis—A Reference. For primary-source background on financial statements and selected ratios, see the U.S. Securities and Exchange Commission’s student-friendly guide.

About the Author

Mansour Farhat, CPA, CIA, DBA, creates and teaches the accounting and exam review courses at Farhat Lectures, including Intermediate Accounting and CPA, CMA, and EA preparation. This lesson was last reviewed in November 2026.