Calculation is based on

Basic Calculation for less than 5,000 participating members - Chapters x members x $10 x 12 months x .25

Basic Calculation for 5,000 - 50,000 participating members - Chapters x members x $10 x 12 months x .33

Basic Calculation for 50,000 - 100,000 participating members - Chapters x members x $10 x 12 months x .45

Basic Calculation for 100,000 or more participating members - Chapters x members x $10 x 12 months x .5