Acid-Test Ratio: What It Means for Australian Businesses in 2026

The acid-test ratio is a liquidity metric that shows whether a business has enough liquid assets to cover its current liabilities. It focuses on assets that can be quickly converted to cash, such as cash itself, marketable securities, and accounts receivable. Unlike the current ratio, it deliberately excludes inventory and prepaid expenses, as these may not be easily or quickly turned into cash.

The formula is:

Acid-Test Ratio = (Cash + Marketable Securities + Accounts Receivable) / Current Liabilities

A ratio of 1.0 or higher typically suggests that a business can meet its short-term obligations without needing to sell inventory. However, what counts as a 'good' ratio can vary by industry and business model.

Australian businesses are navigating a landscape marked by higher interest rates, tighter credit conditions, and ongoing supply chain challenges. These factors have put pressure on cash flows and made liquidity a top priority for many organisations.

Lenders and investors are paying closer attention to liquidity measures like the acid-test ratio when assessing business health. A strong ratio can support applications for loans or credit lines, while a weak ratio may prompt closer scrutiny or less favourable terms.

Recent disruptions in supply chains have also highlighted the risks of relying too heavily on inventory as a source of liquidity. The acid-test ratio, by focusing on the most liquid assets, provides a clearer picture of a business’s ability to respond to sudden financial pressures.

To calculate your business’s acid-test ratio, gather the following figures from your balance sheet:

• Cash: Money in business accounts and on hand.
• Marketable Securities: Short-term investments that can be quickly sold for cash.
• Accounts Receivable: Money owed to your business by customers.
• Current Liabilities: Debts and obligations due within the next 12 months.

Plug these numbers into the formula above. For example, if your business has $100,000 in cash, $20,000 in marketable securities, $80,000 in accounts receivable, and $150,000 in current liabilities, your acid-test ratio would be:

($100,000 + $20,000 + $80,000) / $150,000 = 1.33

This means your business has $1.33 in liquid assets for every $1 of current liabilities.

• Ratio above 1.0: Indicates that the business can cover its short-term debts with its most liquid assets. This is generally seen as a sign of financial strength.
• Ratio below 1.0: Suggests that the business may need to sell inventory or find other sources of cash to meet its obligations. This could be a warning sign, especially if the ratio remains low over time.

It’s important to consider industry norms when evaluating your ratio. Some sectors, such as retail or manufacturing, may operate with lower ratios due to the nature of their business, while service-based companies might maintain higher ratios.

Service-Based Businesses

Service businesses often have fewer inventory holdings and may maintain higher acid-test ratios. This can make them more resilient to short-term cash flow disruptions.

Product-Based Businesses

Businesses that rely heavily on inventory, such as retailers or manufacturers, may have lower acid-test ratios. If supply chain issues arise or sales slow down, these businesses may find it harder to meet immediate obligations without selling stock.

Startups and Growing Companies

Startups may experience fluctuations in their acid-test ratio as they invest in growth. Maintaining a healthy ratio can help attract investors and secure funding, as it demonstrates prudent financial management.

If your acid-test ratio is lower than you’d like, there are practical steps you can take to strengthen your position:

1. Accelerate Receivables

• Review your invoicing process and follow up promptly on overdue accounts.
• Consider offering incentives for early payment.
• Use digital tools to streamline billing and collections.

2. Manage Payables Carefully

• Negotiate longer payment terms with suppliers where possible.
• Prioritise payments to critical suppliers to maintain good relationships.

3. Build a Cash Buffer

• Set aside a portion of profits in a business savings account.
• Review your cash flow forecasts regularly to anticipate shortfalls.

4. Review Expenses

• Audit regular expenses and subscriptions to identify savings.
• Delay or scale back non-essential spending during periods of uncertainty.

5. Reassess Inventory Management

• Consider reducing inventory levels if possible, especially if supply chain disruptions are a risk.
• Explore just-in-time inventory strategies to free up cash.

Monitoring your acid-test ratio can help you make informed decisions about borrowing, investing, and managing day-to-day operations. It can also alert you to potential cash flow issues before they become serious problems.

For business owners, regularly reviewing this ratio alongside other financial metrics provides a more complete picture of financial health. It’s a useful tool for discussions with lenders, investors, and other stakeholders.

While the acid-test ratio is a valuable indicator, it’s not the only measure of business health. It does not account for the timing of cash inflows and outflows, nor does it consider the quality of accounts receivable (some debts may be harder to collect than others). It should be used in conjunction with other financial metrics and a thorough understanding of your business’s unique circumstances.

In 2026, the acid-test ratio remains a practical and relevant tool for Australian businesses seeking to navigate a changing economic environment. By understanding what the ratio means, how to calculate it, and how to improve it, business owners can strengthen their financial position and respond more effectively to challenges as they arise.