Most players want one number, but it depends on where and how you play.
As a practical starting point, many players can think in ranges: live cash games often need a shallower bankroll than online cash. But those are starting points, not personalized answers. Your actual bankroll requirement depends on your win rate, your variance, your stake, and how aggressively you want to take shots.
If you want the exact version instead of the rule-of-thumb version, run your numbers through Poker Shark’s free bankroll calculator.
By Poker Shark
Quick Answer: Recommended Buy-In Ranges
Use these as starting ranges, not hard laws:
| Format | Aggressive | Standard | Conservative |
|---|---|---|---|
| Live cash games | 20 buy-ins | 30 buy-ins | 40 buy-ins |
| Online cash games | 30 buy-ins | 40 buy-ins | 60 buy-ins |
If your edge is small, your sample is noisy, or your games swing hard, lean conservative.
Why There Isn’t One Perfect Number
“Twenty buy-ins” is not useless advice. It is just incomplete.
Two players can sit in the same game with the same bankroll and have very different risk levels. A strong live player in a soft $1/$2 game can survive with a shallower roll than an online player grinding tougher pools for a thin edge.
That is why bankroll management works best in two layers:
- Use live and online buy-in ranges as a safe default.
- Use your own numbers to personalize the answer.
The default gets you in the ballpark. The math gets you closer to the truth.
Live vs Online: Why the Number Changes
Live games are often softer. A solid player can hold a bigger edge there, and at thirty hands an hour a downswing takes longer to play out.
Online games are tougher, so a typical edge is smaller compared with the swings. That is why online bankroll management usually needs more buy-ins. Faster play does not make the swings bigger. It only means they arrive sooner.
What Actually Determines Your Bankroll Requirement
The biggest factors are simple:
Win rate: The more you beat the game, the easier it is to recover from downswings.
Variance: Some formats and player pools are just swingier. A roll that feels safe in one environment can feel thin in another.
Volume: The more hands you play, the more chances variance has to test your bankroll.
Risk tolerance: Some players are comfortable taking aggressive shots. Others would rather grow slower and sleep better.
This is why bankroll management is really about risk of ruin: the chance that your bankroll hits zero before your edge has enough time to show up.
Why “20 Buy-Ins” Is Not Wrong, Just Incomplete
The problem with rules of thumb is not that they are fake. It is that they hide the variables that matter most.
At 100NL, a full buy-in is $100. A 20-buy-in bankroll is $2,000. That might be fine for one player and reckless for another.
If you win at a healthy clip and your swings are modest, $2,000 may be enough. If your edge is small and your results are volatile, the exact same bankroll can be too aggressive.
That is why a fixed number should be your default, not your conclusion.
Examples by Stake
Practical examples make this easier.
$1/$2 Live Cash
Assume a standard 100 big blind buy-in of $200.
- 20 buy-ins = $4,000
- 30 buy-ins = $6,000
- 40 buy-ins = $8,000
If your local game is soft and you have a real edge, the middle of that range can be reasonable. If the game plays deep or your results are inconsistent, go higher. The $1/$2 live bankroll guide runs these buy-in counts through the simulator for a solid winner and a modest one.
$0.25/$0.50 Online Cash
Assume a 100 big blind buy-in of $50.
- 30 buy-ins = $1,500
- 40 buy-ins = $2,000
- 60 buy-ins = $3,000
Online swings tend to come faster, so this is usually a spot to avoid the aggressive end unless you have a strong sample and a stable win rate. The 50NL bankroll guide shows the simulated downswings behind that caution.
When to Move Up and When to Move Down
Moving up is not about feeling ready. It is about having the bankroll and the results to support the jump.
A practical approach looks like this:
- Move up when you have enough buy-ins for the next level and a proven edge at your current one.
- Move down when your bankroll no longer supports your current game.
- Do not let ego turn a temporary shot into a permanent leak.
If you want to see this visually, Poker Shark’s Bankroll Calculator includes a stake ladder that shows when you have enough buy-ins for the next level and how much room you really have. The bankroll management guide covers risk of ruin and stake selection in more depth.
Use a Calculator When You Want the Real Answer
Rules of thumb are great for choosing a safe default. They are not great for answering your actual bankroll question.
If you know your win rate, standard deviation, bankroll, stake, and hand horizon, you can do better than guessing.
Poker Shark’s bankroll calculator lets you plug in your numbers and see:
- your risk of ruin
- 1,000 Monte Carlo bankroll paths
- projected confidence intervals
- a variance chart
- estimated downswing duration in sessions and weeks
- how sensitive your bankroll is if your true win rate is lower than you think
- a stake ladder for moving up
That makes it useful in exactly the spots where generic bankroll advice breaks down: shot-taking, borderline bankroll spots, and uncertain win rates.
What If You Don’t Know Your Win Rate Yet?
That is common, especially for newer players or anyone with a small sample.
If you do not trust your win rate estimate, use the standard or conservative range. Assume reality is a little worse than your best run suggests. That is not pessimism. It is bankroll discipline.
And if you want to improve the win-rate side of the equation instead of just forcing bigger shots, spend more time on poker training, poker practice, and hand review. A better edge reduces bankroll stress more effectively than wishful thinking. The exploitative strategy guide covers the adjustments that raise a win rate, and exploitative poker vs GTO explains when a read is worth acting on.
The Bottom Line
The short answer is not one number. It is a range.
Use live and online buy-in ranges to choose a safe default. Then use your actual numbers to personalize the answer. If you want to know whether your bankroll is solid, fragile, or too aggressive for the games you play, stop guessing and run your bankroll through the calculator.