Quick Ratio or Acid Test Ratio

Written by True Tamplin, BSc, CEPF®

Reviewed by Subject Matter Experts

Updated on January 31, 2024

Quick Ratio: Definition

The quick ratio or acid test ratio is the ratio of quick assets to all current liabilities in a business.

Quick assets for this purpose include cash, marketable securities, and good debtors only. In other words, prepaid expenses and inventories are not included in quick assets because there may be doubts about the quick liquidity of inventory.

Quick Ratio: Explanation

The quick ratio is a rigorous test of a firm's ability to pay its obligations.

It considers the fact that some accounts classified as current assets are less liquid than others. As a case in point, current assets often include slow-moving inventory items and other items which are not very liquid.

For example, inventories may take several months to sell; also, prepaid expenses only serve to offset otherwise necessary expenditures as time elapses.

These are subtracted from current assets to arrive at quick assets, which are divided by current liabilities to get the acid-test ratio. Thus, the quick ratio attempts to measure the firm's immediate debt-paying ability.

The quick ratio is a conservative measure because it relates to the "pool" of cash and the connection between immediate cash inflows to immediate cash outflows. The old rule of thumb here was that a quick ratio of at least 1:1 would keep creditors happy.

A low ratio may indicate that the company will have trouble paying its bills.

Financial ratios are based on a given income statement and balance sheet. And in a dynamic world, we have to supplement the financial statement given at a point in time with a trend analysis of changes that have occurred over time.

Formula For Quick Ratio

To calculate the quick ratio, use the following formula:

Quick ratio (or acid test ratio) = Quick assets / Current liabilities


The data below was obtained from Fine Trading Company's balance sheet.

Current assets:

  • Cash: $90,000
  • Marketable securities: $65,000
  • Prepaid expenses: $15,000
  • Inventory: $350,000

Current liabilities:

Required: Using this information, calculate the company's quick ratio.


Quick ratio = Quick assets / Current liabilities

= *$355,000/$330,000**

= 1.08 or 1.08 : 1

*$90,000 + $65,000 + $200,000

**$95,000 + $10,000 + $25,000 + $200,000


Fine Trading Company's quick ratio is 1.08. This is usually comfortable for a trading company.

The quick ratio provides a more strict test of liquidity compared to the current ratio. A quick ratio of 1:1 or higher is considered satisfactory for most companies.

Quick Ratio or Acid Test Ratio FAQs

About the Author

True Tamplin, BSc, CEPF®

True Tamplin is a published author, public speaker, CEO of UpDigital, and founder of Finance Strategists.

True is a Certified Educator in Personal Finance (CEPF®), author of The Handy Financial Ratios Guide, a member of the Society for Advancing Business Editing and Writing, contributes to his financial education site, Finance Strategists, and has spoken to various financial communities such as the CFA Institute, as well as university students like his Alma mater, Biola University, where he received a bachelor of science in business and data analytics.

To learn more about True, visit his personal website or view his author profiles on Amazon, Nasdaq and Forbes.