SPM Liquidity Ratios: Current and Acid-Test Ratios in Plain Language

Imagine a business that looks profitable on paper, but when the time comes to pay its suppliers, there is no cash in the bank. This does happen, which is why liquidity ratios matter in SPM Principles of Accounting (SPM code 3756).

Liquidity ratios such as the current ratio and the acid-test ratio help us judge whether a business has enough assets that can easily be turned into cash to pay its short-term debts. This article explains both ratios in plain language, with formulas, worked examples and how to interpret them.

What are liquidity ratios?

Liquidity refers to a business's ability to convert its assets into cash quickly enough to settle its short-term liabilities (debts). Short-term liabilities are debts that must be paid within one year, for example creditors, bank overdrafts, and accrued expenses.

Liquidity ratios focus on current assets (such as cash, debtors, and inventory) compared to current liabilities. They answer one simple but crucial question: can this business pay its day-to-day debts without being forced to sell non-current assets like buildings or vehicles?

The current ratio: formula and meaning

The current ratio is calculated using the formula: Current Ratio = Current Assets ÷ Current Liabilities. The answer is usually written as a ratio, for example 2:1.

Its meaning is easy to grasp. If the current ratio is 2:1, it means that for every RM1 of short-term debt, the business has RM2 of current assets to cover it. Generally, a higher ratio suggests a more comfortable liquidity position, because the business has surplus assets to meet its obligations.

The acid-test ratio: why remove inventory?

The acid-test ratio (also called the quick ratio) is a stricter test. Its formula is: Acid-Test Ratio = (Current Assets − Inventory) ÷ Current Liabilities.

Why is inventory subtracted? Because inventory (stock of goods) is the slowest current asset to convert into cash. Goods must first be sold, sometimes on credit, before they become money. By removing inventory, the acid-test ratio shows the business's ability to pay its debts using only its most liquid assets. Some calculations also subtract prepaid expenses, since these cannot be turned into cash either.

A step-by-step worked example

Suppose a business has the following: Cash RM8,000; Debtors RM12,000; Inventory RM20,000; and Current Liabilities (creditors) RM20,000. Total current assets are RM8,000 + RM12,000 + RM20,000 = RM40,000.

Current ratio = RM40,000 ÷ RM20,000 = 2:1. This looks healthy. Now the acid-test ratio: (RM40,000 − RM20,000) ÷ RM20,000 = RM20,000 ÷ RM20,000 = 1:1.

Notice the difference. Although the current ratio looks strong at 2:1, the acid-test ratio is only 1:1. This tells us that half of this business's current assets are tied up in inventory, which the current ratio alone does not show.

How to interpret the results correctly

Many students wrongly assume that a higher ratio is always better. A current ratio that is too high (say 5:1) may indicate that the business is holding too much idle cash, or piling up unsold inventory, which is inefficient.

On the other hand, a ratio that is too low (below 1:1) signals a liquidity risk, meaning the business may struggle to pay its debts. Good interpretation in the exam requires you to explain what the figure means, not just state whether it is high or low. Compare it with the previous year too, to spot the trend.

Common student mistakes

The first mistake is misclassifying current and non-current assets. Remember, land, buildings, and vehicles are not current assets, so they are excluded from the calculation. The second mistake is forgetting to subtract inventory in the acid-test ratio.

The third mistake is not writing the answer in the correct form or failing to give an interpretation. In questions that ask for comments, marks are awarded for meaningful explanation, not just the number. Always show the formula, substitute the values, and give the answer as a ratio.

How we help

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FAQ

What is the difference between the current ratio and the acid-test ratio? The current ratio counts all current assets, while the acid-test ratio removes inventory because it is the slowest to convert into cash. The acid-test ratio is the stricter liquidity test.

Is a 2:1 ratio always ideal? Not necessarily. It depends on the type of business. What matters is that you understand what the figure means and can interpret it correctly in the context of the question.

Can you help with my coursework? Sorry, we do not help with coursework. Our focus is on building conceptual understanding and answering skills so you can stand on your own in the exam.