Blog · Strategy
Push or fold: short-stack tournament strategy (10-20 BB)
Below 20 BB, preflop poker reduces to a binary choice: shove your entire stack, or fold the hand. This isn't an oversimplification — it's mathematically the most profitable approach once your stack becomes too short to justify a partial raise followed by post-flop play.
Why push/fold becomes optimal at a short stack
A partial raise loses its meaning below 20 BB
Raising to 2.5x with a 15 BB stack already commits a sixth of your stack. If you plan on calling a 3-bet or continuing on most flops, you're effectively committed anyway — so you might as well shove outright and maximize your fold equity.
Fold equity is your main source of profit
At a short stack, you rarely win by getting called and winning the card race: you mostly win because opponents fold to a shove. A push maximizes that chance of taking down the pot without ever showing your cards.
Bet sizes become binary by construction
Between 10 and 20 BB, the gap between a standard raise and a full shove shrinks so much that game theory naturally converges on a single profitable size: your entire stack.
Choosing your range by position
Your range should widen mechanically as you get closer to the button: fewer players are left to act behind you, meaning more fold equity available. Conversely, from early position, too wide a pushing range means facing strong calling hands from the blinds more often.
This BB stack reference is the natural follow-up to the guide on stack zones: once you've identified that you're in "short stack" territory, the only remaining question is your position and the hand you're holding.
This same reasoning applies, in an amplified form, to the final table, where push/fold ranges also need to account for the ICM pressure of the remaining pay jumps.
Frequently asked questions
At what stack size should I switch to push/fold?
The transition generally happens between 15 and 20 BB. Below that threshold, partial raises lose their point because they commit too large a share of your stack without allowing real post-flop decisions.
Why not just go all-in with any hand?
Because your pushing range still needs to stay profitable once you account for fold equity and the hands opponents can call you with. Pushing every hand indiscriminately loses value against opponents who know when to call you.
How does position affect my pushing range?
The closer you are to the button, the wider your pushing range can go: fewer players are left to act behind you who could call, so you have a better chance of taking the pot immediately thanks to fold equity.
Should you call an opponent's push wider than you'd push yourself?
No, generally the opposite: your calling range should be tighter than your pushing range, because calling exposes you to a coin flip, while pushing also benefits from the times your opponent folds.
Automate your short-stack decisions
The push/fold trainer puts you through dozens of realistic situations by stack depth and position, so you build the right reflexes without heavy mental math at the table.
Try the trainer →Free · No signup required
What FlopIQ does on this topic
The FlopIQ tools and analyses that directly address what you just read.
Push / fold ranges
Nash ranges from 1 to 20 BB, by position, in a 13×13 grid — push and big-blind call.
See push/fold ranges →Range
Thinking in a spread of hands rather than a single hand — the foundation for everything else.
Range glossary entry →