What is the main reason between current ratio and acid test ratio?

The main difference between the current ratio and the acid-test ratio lies in the assets they consider. The current ratio includes all current assets, such as inventory, while the acid-test ratio excludes inventory and focuses only on the most liquid assets (cash, marketable securities, and receivables). This makes the acid-test ratio a more stringent measure of a company's short-term liquidity, as it assesses the ability to meet current liabilities without relying on inventory sales. Thus, the acid-test ratio provides a clearer picture of immediate financial health.