Stolen from PocketFives.com's Basic Bankroll Management:
| || || |
|Limit Hold'em||550 Big Bets||400 Big Bets||200 Big Bets|
|NL Holdem||45 Buy Ins||25 Buy Ins||15 Buy Ins|
|SNG||65 Entries||45 Entries||20 Entries|
|MTT||200 Entries||100 Entries||40 Entries|
The numbers in the "Pro" column are for players who derive the majority of their income playing, and would be devastated financially if they lost their bankroll to a bad run of cards. Using these figures will yield a less than 1% chance of going broke over the course of a lifetime of play assuming that you are a solid winning player.
The numbers in the "Protected" column are for a bankroll that you are going to attempt to make a serious income from. If your bankroll will be tough to replace if you lose most of it then you should use these numbers as a starting point.
The "Unprotected" column is for people who are willing to play a little looser in an attempt to build a bankroll, and for those of you who could easily replace your bankroll if you were to lose it. Keep in mind that using these figures does yield a significant possibility of going broke or having to drop down levels if you get off to a rough start. An average winning player (if there is such a thing) would have a less than 10% chance of going broke if they use the unprotected number and don't remove any money from their bankroll until it is built up to a safer level. If you use the unprotected column as a long term guide, and pull money out any time you get significantly above that number, you will almost certainly go broke at some point.