Pot Limit Omaha Rules and How PLO Differs From Hold'em

Pot limit Omaha (PLO) plays like Texas Hold’em with two changes. Each player gets four hole cards instead of two, and at the showdown must use exactly two of them with exactly three of the five board cards. And no bet or raise may be larger than the pot. Everything else (the button, the blinds, the flop, turn and river, the four betting rounds) works the same way.

Those two changes are enough to make PLO a different game. Hands run closer, draws are bigger, and the most common beginner mistake is misreading a hand that would be a winner in Hold’em.

The deal and the betting rounds

The procedure below follows Pennsylvania’s Omaha regulation, 58 Pa. Code § 637a.12, which licensed rooms in that state must deal by.

1. Up to ten players. Pennsylvania caps an Omaha game at ten. (Its five-card Omaha variant, under § 637a.19, caps the table at eight.)
2. Button and blinds. The button rotates clockwise each hand. The player to the left of the button posts the blind, and the room may require additional blinds; in practice most games use a small blind and a big blind, exactly as in Hold’em.
3. Four hole cards each, dealt face down one at a time, starting left of the button. The button gets the last card.
4. Preflop betting starts with the player to the left of the blinds (or the straddle, if the room allows one).
5. Flop: burn one card, turn three community cards face up. Betting starts with the first active player left of the button.
6. Turn: burn one, one more community card, another betting round.
7. River: burn one, the fifth community card, the final betting round.
8. Showdown: each remaining player makes a five-card hand from exactly two hole cards and exactly three board cards. Pennsylvania’s text requires “two of the four cards dealt to the player” plus three of the five community cards.

Robert’s Rules of Poker states the same requirement and adds a practical rule: at the showdown, the entire four-card hand should be shown to win the pot. It also points out the one Hold’em rule that does not carry over: a player cannot “play the board” in Omaha, because two hole cards must always play.

The two-plus-three rule, with traps

This is where Hold’em players lose pots they thought they had won. Three examples, each with the board and hole cards in full.

Trap 1: four of a suit in hand. A player holds A♠ 7♠ 6♠ 2♠. The board is K♠ 9♦ 5♣ 4♥ 8♦. There is only one spade on the board, and a flush needs three board cards of the suit plus two from the hand, so there is no flush. But there is a hand: 7♠ 6♠ with 9♦ 8♦ 5♣ makes a nine-high straight. Against an opponent holding K♥ Q♦ 3♣ 3♦, whose best hand is a pair of kings, the straight wins. The player who announced “nut flush draw” on the flop got paid for the wrong hand.

Trap 2: the board’s trips. The board is 8♣ 8♦ 8♥ K♠ K♦. In Hold’em, any player holding two small cards plays eights full of kings off the board. In Omaha, a player holding A♣ 4♦ 3♠ 2♥ must use two of them: the best is A-4 with 8-8-8, three eights. Meanwhile an opponent holding Q♠ Q♥ J♣ 10♦ makes Q-Q with 8-8-8: eights full of queens. Nobody gets kings full without a king in hand.

Trap 3: the one-card royal. The board is A♥ K♥ Q♥ J♥ 2♣ and a player holds 10♥ 9♣ 5♦ 3♠. In Hold’em, that 10♥ would make a royal flush. In Omaha it makes nothing of the sort: one heart in hand is not enough for a flush, and the ace-high straight would need the 10 plus four board cards. The best legal hand is 10♥ 9♣ with K♥ Q♥ J♥, a king-high straight. Still good, but nowhere near the hand the player is about to announce.

The rule of thumb: count the board’s three, then the hand’s two. If either side is short, the hand is not what it looks like.

How a pot-sized bet is calculated

“Pot limit” means a bet or raise can be any amount from the minimum up to the size of the pot. The awkward part is the raise. Robert’s Rules settles it: the maximum raise is the amount in the pot after the raiser’s call. Its example: with $100 in the pot and a $50 bet, the next player may call $50 and raise $200, for a total of $250.

The arithmetic, as a formula a dealer can use:

Maximum raise-to = (3 × the last bet) + the pot before that bet

Check with the example: 3 × $50 + $100 = $250.

With no bet in front of the player, the maximum is simply the pot.

Preflop: the blinds count

Before the flop, the blinds are the pot and the big blind is the bet. With $1/$2 blinds, the first player to act can raise to a maximum of 3 × $2 + $1 = $7, or 3.5 big blinds.

Variant rules differ here. Robert’s Rules notes that many structures treat the small blind as if it were the same size as the big blind when computing the pot, so in a $5/$10 game a player may open for up to $40, four times the big blind. Under the strict calculation the same open would be capped at $35. Pennsylvania’s regulation leaves betting limits and raise restrictions to each room’s posted rules, so the house sign decides.

Robert’s Rules also allows rooms to round the pot up to a convenient unit for speed, treats an oversized single chip thrown in without comment as a pot-sized bet, and has the dealer return the surplus when a bet exceeds the pot.

Why PLO plays so differently

Four hole cards give six two-card combinations per player (4 choose 2). That one fact drives most of the strategy differences:

• Hands run closer. In Hold’em, aces against kings is about 81% to 19%. In PLO, A♠ A♥ K♠ Q♥ against J♣ 10♦ 9♣ 8♦ is only 58.6% to 41.4%, and A♠ A♥ 7♣ 2♦ against K♥ K♦ Q♠ J♣ is 65.8% to 34.2% (both computed by running every one of the 1,086,008 possible boards).
• The nuts matter more. With six combinations each, someone often holds the best possible hand on a coordinated board. A second-best flush is a bigger liability than in Hold’em.
• Draws can be favorites. Wrap straight draws with four hole cards can have 13 to 20 outs. With 20 outs on the flop, a draw is 67.5% to get there by the river (see the poker odds chart).
• Pot limit caps the bluff. Nobody can move all in for ten times the pot on the flop, so stacks go in over several streets. The pot odds break-even for a pot-sized bet is 33.3%, and that is the biggest bet a PLO player can face.

Omaha hi-lo (eight or better)

The split-pot version uses the same deal with a second hand. Under Pennsylvania’s rules:

• The best high hand and the best qualifying low hand split the pot.
• A qualifying low may not contain a pair, trips or quads, or any 9, 10, jack, queen or king. In other words, five different cards, eight or lower.
• If no hand qualifies for low, the high hand takes the whole pot.
• An ace counts as both high and low, and a player may use different two-plus-three combinations for the high and the low.
• Odd chips go to the high hand.

The best possible low is 5-4-3-2-A, and because straights and flushes do not count against a low, that hand can sometimes win both halves: the best low, plus a straight for high. Robert’s Rules applies an eight-or-better qualifier to all high-low split games unless the room posts otherwise.

Quick comparison: Hold’em and PLO

Online, real-money PLO in the US is legal only through state-licensed rooms in the states that license them; the state-licensed poker sites note lists them by regulator.

Sources

• 58 Pa. Code § 637a.12, Omaha Poker, Pennsylvania Gaming Control Board regulation via Cornell LII, checked Nov 6, 2026.
• 58 Pa. Code § 637a.8, placement of bets, checked Nov 6, 2026.
• Bob Ciaffone, Robert’s Rules of Poker, private-game edition, sections on Omaha, Omaha high-low and pot-limit, checked Nov 6, 2026.
• Equities: computed for this note by exact enumeration of all boards.

PLO swings hard, so it is a game for adults with money they can afford to lose: 21+, or 18+ where state law allows. Free support is available by call or text at 1-800-MY-RESET; see the responsible gambling page for more.