Poker Bet Sizing Strategy
If you decide to bet, it is very important to wager the right amount, known as your bet sizing. Using proper bet sizing allows you to achieve your aims in any given situation. Whether that’s value bets on a draw heavy board or bluffing the river.
Poker bet sizing is a complex subject and getting the optimal bet sizing is not always easy. But even as a beginner you can start to get a feel for when a small bet will do the job or when you need to make larger bets.
Your bet sizing strategy will depend on many factors. Things like position, board texture, stack to pot ratio, your hand range and your opponent’s range. You can also use exploitative bet sizing against weaker poker players.
In no limit Hold’em games, you can bet anything from the minimum, which is usually one big blind, up to your entire stack. That’s known as going all in.
Preflop bet sizing is often kept to a standard amount, thought of in terms of big blinds. Postflop bet sizing tends to vary depending on the situation. As a general rule, the following definitions apply when it comes to postflop bet sizing:
- Small bet: anything from around quarter to half the pot.
- Medium sized bet: between half and three quarters of the pot.
- Large bet: up to a pot sized bet or an overbet to the pot.
This applies in cash games or tournaments. In the former, the pot will be real money, while in the latter it will comprise tournament chips. But the general guidelines for poker bet sizing apply in both instances.
Why is bet sizing important in poker?
Bet sizing is very important in poker, but it is often overlooked. Newer players in particular will default to using the same bet sizing every time, no matter what the situation, or to betting in a way that reveals the strength of their hand.
Against proficient players, using the correct bet sizing is important because, combined with balanced hand ranges, doing so makes it near-impossible for opponents to exploit you or to make easy, profitable decisions against you.
When up against weaker players, bet sizing has another purpose. It allows you to make exploitative plays by sizing your bets in a way that provokes a certain response from opponents. For example, you can bet small to induce bluffs or bet big for value against calling stations.
Optimal bet sizing preflop
When raising preflop, generally speaking players will maintain the same bet sizing with any hand and from pretty much any position. This prevents other players from being able to gauge the strength of your hand based on your bet sizing.
The default raise size in tournaments used to be three times the big blind. Nowadays, it’s generally accepted that a smaller bet sizing strategy of around 2-2.5x the big blind accomplishes the same goal.
In a low stakes cash game, players may be looser and you may want to increase your preflop bet sizing to account for this, going for three times the blind or more.
Whether you choose to raise two times or three times the blind, always keep your bet sizing consistent so that it doesn’t indicate hand strength.
Raising preflop from the small blind
The small blind is an exception to the 2-3x guideline for preflop bet sizing. When open-raising from this position, you’ll want to go a little bigger, such as 4x the big blind. Otherwise, the player in the big blind will have great odds to call with any cards.
When the big blind calls, they will have position postflop and will be able to win pots with or without the best hand. Increasing your bet sizing from the small blind means if the big blind calls they must pay more for the privilege. They’ll have to tighten up, allowing you to steal more blinds.
Bet sizing when three-betting
When it comes to three-betting, your bet sizing will change depending on other factors like position. Again, your three-bet sizing should never give away your poker hand. You don’t want to be betting any bigger or smaller with a strong hand.
As a general guideline, your three-bets should be around 3-3.5x your opponent’s initial raise when you’re in position. When out of position, you can opt for larger bets of around 4-5x the initial raise.
Going for a bigger bet size out of position makes sense here. It allows you to take down more pots without having to play postflop with a disadvantage. Doing so will also reduce the stack to pot ratio, simplifying postflop decisions if you’re called.
There’s complicated math going on behind the scenes to arrive at these default raise sizes for open-raising and three-betting. It’s to do with pot odds and hand ranges. For the most part though, if you stick to the poker bet sizing strategy offered here then you can’t go far wrong.
Factors that impact postflop poker bet sizing
Now, we’re going to cover the basics of postflop bet sizing, outlining the factors that impact how much you should bet. First though, one factor that definitely shouldn’t influence your bet sizing:
Bet sizing is not about hand strength
If you change the size of your bets depending on whether you have a strong hand, perceptive opponents will work out the pattern.
For example, if you go for larger bets with a monster other players can get out of the way. And if you bet small with strong hands to be deceptive, you’ll soon get found out.
Instead, you’ll want to keep your bet sizing consistent between your strong hands, bluffs, and everything between. By keeping your ranges balanced, and your bet sizing consistent, you’ll keep opponents guessing. And you’ll make it more likely they’ll make mistakes.
So, with that said, how exactly should you vary your postflop bet sizing?
Board texture
Board texture is an important factor when it comes to your bet sizing strategy. On a very dry board, one that doesn’t have many possibilities for draws, you can make smaller value bets and bluffs. An example of a dry flop is A♥ 8♣ 3♠ .
On dry boards, opponents won’t have draws, so they either have a made hand that can call or they don’t. By going small, you can extract value from weaker hands like low pairs, while getting enough folds to be able to balance your range with bluffs.
On a draw heavy board, such as J♥ 10♥ 4♠ , you’ll generally want to bet bigger with both your value hands and your bluffs. This prices opponents who have a draw out of the pot, or makes them pay with incorrect odds to continue.
Merged Range
Generally speaking if you have a merged hand range, then you’ll want to bet smaller. A merged range is one consisting of different kinds of poker hands. From strong value hands, to bluffs, draws and everything between.
An example of a merged betting range is a flop c-bet. When you c-bet in position, you’ll usually do so with a huge percentage of your range that includes all sorts of hands.
By betting small with most of your range, you incentivize your opponent to call wider. This keeps weaker hands in the pot even when you have a medium strength hand. Your bluffs will still get through often enough, because opponents will still have to fold when they have trash or completely miss.
Polarized range
A polarized range is one consisting of very strong made hands for value bets, along with some bluffs, with no medium hands between. This occurs most often on the river when there are no more cards to come. Players either have it or they don’t.
Bet sizing with a polarized betting range tends to be on the larger size, as much as the size of the pot or even more. This gives your bluffs maximum equity and forces opponents off their medium strength hands.
At the same time, you get paid the maximum for your value bets when other players call with a strong but inferior hand. Or when they mistake your value bet for a bluff and hero call.
Stack to pot ratio
Another major consideration when it comes to bet sizing is stack to pot ratio. This is the amount left in your stack, or your opponent’s stack, whichever is shortest, compared to the amount in the pot.
You can use stack to pot ratio to size bets in various ways. First, it can help you to avoid committing yourself to the pot by betting or calling off too many chips. This could leave you with a short enough stack that you can’t get away from your hand due to the amount in the pot to win.
Second, if you’re looking to make multiple value bets with the intention of moving all in, you can size your bets in a way that reduces the stack to pot ratio. Enough to allow you to shove on the next street.
For example, let’s say you have A♣ A♥ on a flop of K♥ 5♣ 4♣ . There’s 500 in the pot and you have 1,500 behind. You have the initiative and are first to act.
If you bet small here, say 150, and your opponent calls, you would have 1,350 left and there would be 800 in the pot. It would be difficult to jam the turn without pushing opponents off their pair of kings.
If you go for a larger value bet on the flop here, for say 350, there will be 1,200 in the pot. And you will have 1,150 left to shove with on the turn, which is less than a pot size bet.
Position
As with every decision in poker, position is very important. Being in position during the hand is a huge advantage, allowing you to gain information and act last. You can make smaller bets when in position with both value hands and bluffs. Smaller bets will still put pressure on out of position opponents, while allowing you to bet with a merged range of hands.
From out of position, bet sizing can get a little more complex and situation dependent. Generally, you’ll be betting with a polarized range more often, which favors larger bets. A bigger bet sizing lets you claim the pot more often, somewhat negating positional disadvantage. It also reduces the stack to pot ratio, allowing you to move all in quicker.
Opponent’s range and tendencies
As the hand progresses, you should always be thinking about other poker player’s ranges. Your bet sizing should take this into account, so you can target their hands in the best way possible.
For example, if you believe your opponent has missed the flop completely most of the time after defending the big blind, a small bet may do the job. If you think they are very strong but still behind, increase your bet sizing to gain value from a hand they can’t fold.
This also relates to understanding your opponent’s tendencies. This allows you to adjust your bet sizing to exploit the ways in which other players make mistakes. For example, if one of your opponents calls any size bet whenever they hit a pair, you can make huge value bets against them.
But you might face an opponent who is very tight. One who won’t call even a small bet without top pair or better. In this case you can make very small stabs at the pot to bluff against them. Start with the fundamentals like hand ranges and board texture, then change them to fit your purpose against other players.
When to Make Small Bets
The size you want to bet will always depend on the specific situation. But players might want to make small bets on a dry board when there are fewer connecting or suited cards.
When the board is dry, there is no need to make people pay too much for their draw or to protect your hand against flushes and straights. Your bet sizing can be on the smaller side compared to a draw-heavy board.
A small bet also works well when playing with a merged range consisting of strong hands, medium strength hands and bluffs. An example of this is a continuation bet on the flop, because it’s likely you’ll be betting with the majority of your range.
Going with a small bet sizing here keeps opponent’s weaker hands in the mix, rather than scaring away hands you are ahead of. At the same time, you’ll get some bluffs through for cheap when opponents have completely missed.
Big Bets
In certain situations, big bets can be a very strong weapon. They’ll put a lot of pressure on your opponents and force them into decisions that cost a lot of their chips. Big bets can be useful to bluff people off decent hands, gain huge value with strong hands, or to protect against strong draws.
Usually, you’ll make bigger bets in certain situations. If the board is very draw heavy. If you are looking to reduce the stack to pot ratio to move all in. And/or if your range is polarized between very strong value hands and bluffs.
Here are typical situations when to make a big bet:
You make your bet sizing bigger when there are many ways in which your hand can be outdrawn. Suppose you are holding 10♠ 5♥ in the big blind. Several players call and nobody raises, so you see a flop for free. It comes 10♣ 8♣ 5♦ and you have two pair. Your hand is strong at this stage, but a lot of cards are dangerous. Your opponents could make a flush, a straight or a better two pair on the turn or river. You should make a big bet here, even the size of the pot or bigger.
Bet Sizing Examples
- Raising over limpers preflop. You are J♠ J♥ holding in the cutoff seat. Two players in front of you call. It is important to make a decent raise here by taking your default raise size and adding one blind per limper. You raise to five big blinds. You are pretty confident and want to isolate at least one limper to play for value to make them pay postflop.
- Protecting your hand on the flop. In the same scenario as above, both limpers call after you raise to five big blinds. The flop is 10♠ 6♥ 3♦ . The board is pretty dry but your hand is vulnerable to over-cards, and you could be outdrawn if an ace, king or queen comes on the turn or river. You should definitely protect your hand by betting. A small to medium sized bet will do the job. It will keep pairs of tens and other weaker hands in the pot while preventing players with overcards from catching up on the turn.
- A monster on the river. You are holding K♠ 10♦ and the board is Q♠ J♠ 4♥ 6♦ A♣ . You have the nuts. You have one opponent, who checked to you. It is OK to bet big here. You are never beat and your opponent can still call if they caught an ace on the river or have two pair. They may also think you’re bluffing some of the time here, such as with a missed draw. Your range is polarized, so you bet big.
- A terrible hand on the river. Yet again the same board with your lone opponent. Unfortunately you are holding 9♠ 8♠ . You had a nice draw but it missed (a “busted” draw) and now you have nothing more than nine high. If you check to showdown you will nearly always lose. This is a good spot for a bluff. Against decent opponents, you’ll need to bet quite big in the same way you would if making a value bet so your bet represents the straight.