Business and Personal Finance Dictionary

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• BASIC DEFENSE INTERVAL (BDI)
  
  a measure that if for some reason all of your revenues were to suddenly cease, the Basic Defense Interval (BDI) helps determine the number of days your company can cover its cash expenses without the aid of additional financing. The BDI is calculated: (Cash + Receivables + Marketable Securities) / ((Operating Expenses + Interest + Income Taxes) / 365) = Basic Defense Interval.
  
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