Enter the total margin ($) and the exposure margin ($) into the SPAN Margin Calculator. The calculator will evaluate and display the SPAN Margin. 

SPAN Margin Formula

The following formula is used to calculate the SPAN Margin. 

SPM = TM – EM

  • Where SPM is the SPAN Margin ($)
  • TM is the total margin ($) 
  • EM is the exposure margin ($) 

How to Calculate SPAN Margin?

The following example problems outline how to calculate SPAN Margin.

Example Problem #1:

  1. First, determine the total margin ($). 
    • The total margin ($) is given as: 167.
  2. Next, determine the exposure margin ($). 
    • The exposure margin ($) is provided as: 40.
  3. Finally, calculate the SPAN Margin using the equation above: 

SPM = TM – EM

The values given above are inserted into the equation below and the solution is calculated:

SPM = 167 – 40 = 127.00 ($)


Example Problem #2: 

For this problem, the variables required are provided below:

total margin ($) = 780

exposure margin ($) = 200

Test your knowledge using the equation and check your answer with the calculator above.

SPM = TM – EM = ?