At the conclusion of the BMW Championship, the top 30 players in the FedExCup Points standings will be eligible for TOUR Championship by Coca-Cola and will be reseeded based on their position.
The reseeded points and the points awarded at TOUR Championship by Coca-Cola are shown in the table below.

Following TOUR Championship by Coca-Cola, the total points each player earns based on his finish at TOUR Championship will be added to his reseeded points, and the player with the highest point total will be named winner of the FedExCup.

In the event of a tie in FedExCup points following TOUR Championship by Coca-Cola, the winner will be decided in a sudden-death playoff immediately following completion of competition. The sudden-death playoff will follow the same format that would be used in the event of a tie for first place at TOUR Championship by Coca-Cola.

Based on the chart below we are to assume that the player finishing in first place on Fed Ex Cup points after the BMW Championship will start the Tour Championship with 2000 points, you can do the maths to see what permutations are required for someone lower in the list ot win the Fed Ex Cup.
The first five or six defintely have an advantage over the rest of the field and so they should for their performances over the previous tournaments.

Points at East Lake are at a rate similar to the other Playoffs events (see table below). Following TOUR Championship by Coca-Cola, the total points each player earns based on his finish at TOUR Championship will be added to his reseeded points, and the player with the highest point total will be named winner of the FedExCup.