Determine the total commission amount for the sale. Multiply the dollar amount of the sale eligible for commission by the percent rate of commission according to company compensation policy. For example, if employees earn 15 percent commission on each sale and the sale on the report lists $100,000, then the total commission amount is $15,000.
Assign shares to each representative that contributed to the sale. Divide 100 shares equally among the representatives if the sales staff made the sale as a team unit. Weight the shares according to company policy; for example if one person was the lead representative and others made differing levels of contribution.
Divide the number of shares each person has in the sale by 100 to calculate the percent of shares. For example, if Salesman A was the lead salesman and Salesman B assisted significantly then the shares might be distributed 60 shares to Salesman A and 40 shares to Salesman B. Dividing by 100 provides .6 or 60 percent for Salesman A and .4 or 40 percent for Salesman B.
Multiply the total commission amount by the percent of shares a representative has in the sale. For example, the total commission amount is $15,000 and Salesman A has 60 percent of the shares in that sale, his split of the commission is $9,000.
Repeat with each additional sales representative. Add all the split amounts of commission together. Check that the sum equals the total commission amount.