Defensive Interval Ratio Calculator
Enter liquid assets, annual operating expenses and the period to get the defensive interval in days.
Result
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About this calculator
The defensive interval ratio (DIR) divides liquid, "defensive" assets — cash, marketable securities, and receivables — by average daily operating expenses: DIR = Defensive Assets ÷ (Annual Operating Expenses ÷ 365). The result is expressed in days: how long a company could keep paying its bills using only assets that are already cash or close to it, if every other source of incoming cash suddenly stopped.
It's especially useful for evaluating companies with volatile or seasonal revenue, or in distress analysis, because unlike the current ratio it doesn't rely on inventory that may be slow to convert to cash. A DIR of 90 days, for example, tells a lender or investor the company has roughly a quarter's worth of runway before it would need new financing or sales.
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