Sales

• Why are Sales Days sometimes more than the number of days in a month minus Sundays & holidays?
  If the last day of the calendar month falls on a weekend day, the first non-holiday weekday of the new calendar month will be the last true sell day of the previous month. (Exception for January 1st: The day after New Year's Day is the last sell day of December unless it is a GM recognized holiday, then it will be the following day.)
• How is the Daily Average calculated?
  Monthly sales divided by the number of selling days in the month. 
• How is Day's Supply calculated?
  The Days’ Supply is calculated by taking the prior monthly Daily Selling Rate and dividing the units in inventory by that number. 

  
  

  Example: 

  April 2020 Selling Days = 26 (selling days do not include Sundays and Holidays) 

  April 2020 Unit Sales for BMW = 8,255 

  April 2020 Selling rate for BMW = (8,255 / 26) = 318 per day 

  Reported BMW unit inventory at the end of April = 54,551 

  BMW Days’ Supply = (54,551 / 318) = 172 Day