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Defensive Interval Ratio Calculator.

Estimate operating days covered by liquid assets and daily operating expenses.

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Defensive interval: 25 days

Defensive interval

0.0days
Liquid assets: $50,000.00 $

Liquid assets

$0.00$

FAQs

How is Defensive Interval Ratio calculated?

The result is a planning metric and not a liquidity guarantee.

Use Cases

Assess short-term financial resilience

Use the calculator to see how many days your business can survive on liquid assets alone, helping you evaluate cash reserves and plan for unexpected disruptions.

Example: A startup with $50,000 in liquid assets and $2,000 daily expenses has a DIR of 25 days.

Compare liquidity across periods or companies

Calculate DIR for different quarters or competitors to gauge relative financial strength and make informed strategic decisions.

Example: Compare your DIR of 40 days to a competitor's 20 days to assess relative stability.

Frequently Asked Questions

What is the Defensive Interval Ratio (DIR)?
The Defensive Interval Ratio (DIR) measures how many days a company can continue operating using only its liquid assets, without relying on additional revenue or financing. It's calculated by dividing liquid assets by daily operating expenses.
How is the Defensive Interval Ratio calculated?
To calculate DIR, divide total liquid assets (cash, marketable securities, and accounts receivable) by daily operating expenses (annual operating expenses divided by 365). The result is the number of days the business can cover expenses with its liquid assets.
What is a good Defensive Interval Ratio?
A higher DIR indicates greater liquidity and financial resilience. Generally, a ratio of 30 days or more is considered healthy, but the ideal value varies by industry and business model. This calculator helps you estimate your company's defensive interval.

Tips & Common Mistakes

Tips

  • Ensure you include all liquid assets: cash, marketable securities, and accounts receivable.
  • Use annual operating expenses for accuracy; divide by 365 to get daily expenses.
  • Regularly recalculate DIR as your assets and expenses change to stay informed.
  • Compare your DIR with industry benchmarks to better interpret your result.

Common Mistakes to Avoid

  • Including non-liquid assets like inventory or fixed assets in the calculation.
  • Using monthly expenses instead of daily, leading to an inflated DIR.
  • Forgetting to subtract non-cash expenses like depreciation from operating expenses.

Last updated: August 13, 2026