How to 4 Bet in Poker: A Complete Guide for 2026

What Is a 4 Bet in Poker?

A 4 bet is a re-raise after an initial raise and a 3-bet. In no-limit hold’em, the first raise is the open, the second raise is the 3-bet, and the third raise is the 4 bet. This aggressive move is typically used in deep-stacked cash games or tournaments to either get value from strong hands or to bluff opponents off their equity. Understanding the 4 bet is crucial for any serious poker player in 2026.

Many beginners shy away from the 4 bet because it involves risking a large portion of their stack. However, mastering this move can significantly improve your win rate. In this guide, we’ll break down the 4 bet into simple steps, covering when to use it, how to size it, and common mistakes to avoid.

Step 1: Understand the Pre-Flop Betting Sequence

Before you can execute a 4 bet, you need to know the betting order. Here’s the typical sequence:

• Open raise – The first player to raise (e.g., 2.5 big blinds).
• 3-bet – A re-raise from another player (e.g., 8 big blinds).
• 4 bet – A re-raise of the 3-bet (e.g., 20 big blinds).
• 5-bet – A re-raise of the 4 bet (rare, usually all-in).

The 4 bet is the third raise in the sequence. It signals extreme strength or a well-timed bluff. In 2026, online games are tighter, so a 4 bet often gets respect.

Step 2: Identify the Right Hands to 4 Bet

Not every hand is suitable for a 4 bet. You should split your 4 bet range into two categories: value and bluffs.

Value 4 Bet Hands

These are premium hands that want to build a big pot. Examples include AA, KK, QQ, and AK. With these hands, your 4 bet forces opponents to call with weaker holdings or fold, giving you immediate profit. In 2026, many players still overvalue JJ and AQ, so you can 4 bet those against loose 3-bettors.

Bluff 4 Bet Hands

Bluff 4 bets use hands that have blockers to strong holdings. For example, A5s blocks AA and AK, making it a great 4 bet bluff. Other candidates include KQo, AJo, and suited connectors like 76s. The key is to choose hands that can flop well if called. A well-timed 4 bet bluff can steal the pot pre-flop.

Step 3: Choose the Correct Sizing for Your 4 Bet

Your 4 bet size depends on stack depth and position. Here are standard guidelines:

• In position (IP): 2.2x to 2.5x the 3-bet size. For example, if the 3-bet is 8 BB, a 4 bet to 18–20 BB works.
• Out of position (OOP): 2.5x to 3x the 3-bet size. OOP you want to discourage calls, so make it 22–24 BB.
• Short stacks (under 40 BB): Shove all-in instead of a small 4 bet. A small 4 bet with a short stack is a mistake.

A common error is making your 4 bet too small, which invites calls and makes post-flop play difficult. In 2026, players are more aware of sizing tells, so keep your 4 bet consistent regardless of hand strength.

Step 4: Analyze Your Opponent’s 3-Bet Tendencies

You should only 4 bet if your opponent 3-bets frequently. Look for these player types:

• Loose 3-bettor (8%+ 3-bet): 4 bet them with a wider range, including bluffs.
• Tight 3-bettor (3% or less): Only 4 bet with AA, KK, and sometimes AK. They likely have a strong hand.
• Unknown opponent: Default to a balanced 4 bet range of about 4–5% of hands.

Use tracking software or notes to gauge their 3-bet percentage. In live games, watch for patterns like 3-betting from the blinds often. A well-timed 4 bet exploits these tendencies.

Step 5: Execute the 4 Bet with Confidence

Once you’ve decided to 4 bet, act smoothly. Don’t hesitate or show nervousness. In online poker, use the betting slider quickly. In live games, maintain a consistent rhythm. Your 4 bet should look the same whether you have aces or a bluff. In 2026, many players use auto-top-up features, so your stack size matters less, but your timing still sends signals.

After your 4 bet, be prepared for two outcomes: your opponent folds (win now) or they call (play post-flop). If they 5-bet all-in, you must decide based on your hand. With AA or KK, snap-call. With bluffs, fold unless you have great pot odds.

Step 6: Play Post-Flop After a Called 4 Bet

When your 4 bet gets called, the pot is large, and stacks are shallow. Your strategy changes:

• Flop aggression: With value hands, continuation bet 60–75% of the pot. With bluffs, check-fold unless you hit a draw.
• Board texture: Dry boards (K-7-2) favor the 4 bettor. Wet boards (9-8-7) favor the caller. Adjust accordingly.
• Stack-to-pot ratio (SPR): With a low SPR (under 3), commit with top pair or better. With a high SPR, play cautiously.

Remember, a 4 bet reduces the effective stack, so you’ll often be all-in by the turn. Plan your hand before you make the 4 bet.

Common 4 Bet Mistakes to Avoid

• 4 betting too often: If you 4 bet more than 6% of hands, observant opponents will exploit you.
• Using the same size for value and bluffs: Always use the same 4 bet size to avoid giving information.
• 4 betting from the blinds without strong hands: Out of position, your 4 bet needs to be tighter.
• Ignoring stack sizes: With 30 BB or less, just shove instead of making a small 4 bet.

In 2026, online poker rooms have advanced HUDs that track your 4 bet frequency. Keep it balanced to stay unpredictable.

When to 4 Bet Bluff vs. When to Fold

Deciding between a 4 bet bluff and a fold depends on your opponent’s fold-to-4-bet percentage. If they fold to 4 bets more than 60% of the time, bluff more. If they call or 5-bet often, only 4 bet for value. Use this table as a rough guide:

• Opponent folds to 4 bet > 60%: 4 bet bluff with A5s, KQo, 76s.
• Opponent folds 40–60%: 4 bet only with strong value hands.
• Opponent folds < 40%: Never 4 bet bluff; only 4 bet with AA/KK.

In live games, you can’t see exact stats, so rely on reads. If a player 3-bet you twice already, they likely have a wide range, so a 4 bet bluff is profitable.

Advanced 4 Bet Strategies for 2026

Modern poker theory suggests using a polarized 4 bet range: very strong hands and weak bluffs, but no medium-strength hands. This makes your 4 bet harder to play against. For example, 4 bet with AA and A5s, but call with JJ and AQ. This strategy is effective in 2026 because opponents struggle to adjust.

Another advanced move is the 4 bet light from the button against aggressive blinds. If the small blind 3-bets your open, a 4 bet to 22 BB with a hand like 87s can win the pot immediately. But use this sparingly—once per session is enough.

Finally, consider the 4 bet fold line: you 4 bet, then fold to a 5-bet. This is standard with bluff hands. Don’t feel obligated to call a 5-bet just because you already put money in. Sunk cost fallacy is a common leak.

Conclusion: Master the 4 Bet for Better Results

The 4 bet is a powerful tool that can boost your win rate when used correctly. By following these six steps—understanding the sequence, choosing hands, sizing properly, reading opponents, executing confidently, and playing post-flop well—you’ll become a more dangerous player. In 2026, the meta favors aggression, so don’t be afraid to 4 bet. Practice in low-stakes games first, then incorporate it into your regular strategy. Remember, a well-timed 4 bet can turn a losing session into a winning one.

Always gamble responsibly. This game is for players 18+ or 21+ depending on your jurisdiction.