Rank Points (RPs) are used to determine your rank in Elite Benefits. You will earn RPs by playing in raked ring games, and by paying tournament fees. For every Rank Point you earn, you will also earn Combat Points. The number of Combat Points you can earn for every Rank Point depends on your rank in Elite Benefits.
Note that while you earn Combat Points for every Rank Point earned, you do not earn Rank Points for every Combat Point earned. This means if you earn extra Combat Points through a promotion, or through a rank bonus, you will not receive extra Rank Points. You can earn extra Combat Points without earning Rank Points, but the only way to earn Rank Points is to play real-money poker.