How to play Omaha poker: rules, pot limit betting and Omaha Hi/Lo
Omaha is a community card poker game built on the same frame as Texas Hold'em. It uses the same board of five shared cards and the same four betting rounds, but each player gets four private cards instead of two and must use exactly two of them. That single rule changes which hands are strong, how often big hands appear and how the betting works. This guide covers the rules, the pot limit structure most games use, Omaha Hi/Lo, and where Canadians can play it on regulated provincial sites.
The basic rules
The rules below follow Loto-Québec's OK POKER rule pages, which match the standard game.
- Blinds. The two players after the dealer button post the small blind and the big blind before any card is dealt.
- Hole cards. Each player receives four private cards, "quatre cartes individuelles plutôt que deux" in the rule page's words.
- Pre-flop. Betting starts with the player after the big blind. Each player can fold, call or raise.
- Flop. The dealer burns a card and deals three community cards face up. A betting round follows.
- Turn. One more card is burned and a fourth community card is dealt. Betting round.
- River. A fifth community card, then the final betting round.
- Showdown. The last player to bet or raise shows first. If nobody bet on the river, the first active player after the button shows first. Identical hands split the pot.
The two-card rule
Your final hand is always five cards: exactly two from your hand and exactly three from the board. Not one, not three, not four.
This trips up Hold'em players more than anything else:
- Board shows four hearts, you hold one heart. You do not have a flush. You need two hearts from your hand.
- Board shows A A K K 7, you hold Q J 9 8. Your best hand is one pair of aces with king, queen and jack. You can only take three board cards, so the board's two pair is not yours.
- You hold four aces. You can only use two of them, so you have one pair of aces plus whatever three board cards help.
With four hole cards there are 6 two-card combinations in your hand, and at showdown each player has 6 x 10 = 60 possible five-card hands to choose from.
How Omaha differs from Hold'em in numbers
| Measure | Hold'em | Omaha |
|---|---|---|
| Distinct starting hands | 1,326 | 270,725 |
| Chance of a pair or better in your hand | 5.9% | 32.4% |
| Chance of being dealt at least two aces | 0.45% (1 in 221) | 2.6% (1 in 39) |
| Five-card hands to choose from at showdown | 21 | 60 |
We computed these from card combinations. The practical lesson is that hands are much closer in value than in Hold'em. Top pair rarely wins a big pot, the winning hand at showdown is often a straight or better, and drawing hands with many outs can be favourites against made hands on the flop.
Pot limit betting
Most Omaha games are pot limit, often written PLO. OK POKER's limits page describes the three structures it uses for Hold'em and Omaha:
- No limit: you can bet any amount up to your stack.
- Pot limit ("limite cagnotte"): "le montant maximum des mises est égal au montant total de la cagnotte". The most you can bet is the size of the pot.
- Fixed limit: bets and raises come in set sizes, the small limit on the first two rounds and the big limit after that.
The rule that confuses new players is how a pot sized raise is counted: first add the amount you need to call, then raise by the size of the pot after your call.
| Situation at a $1/$2 table | Calculation | Maximum |
|---|---|---|
| First raise pre-flop | Call 2, pot becomes 1 + 2 + 2 = 5, raise 5 | Raise to $7 |
| Re-raise after a raise to $7 | Call 7, pot becomes 1 + 2 + 7 + 7 = 17, raise 17 | Raise to $24 |
Online software calculates this for you with a "pot" button, but knowing the maths helps you plan how fast stacks go in.
Omaha Hi/Lo
Omaha haut/bas, also called Omaha Hi/Lo or Omaha 8, splits each pot between the best high hand and the best low hand. OK POKER's rules:
- Low qualifier: a low hand needs five cards of eight or lower, with the ace counting as 1.
- Ranking lows: the hand whose highest card is lowest wins; ties go to the next card down. "Les couleurs et les séquences ne sont pas prises en compte", so straights and flushes do not hurt a low.
- Same two-card rule: for both the high and the low hand you must use exactly two hole cards and three board cards, and the two can be different pairs from your hand.
- No qualifying low: the high hand takes the whole pot.
A low is only possible when the board has at least three different ranks from ace to eight. By our count that happens on about 60.1% of five-card boards, so roughly two pots in five go entirely to the high hand.
Starting hand basics
There is no single chart that every coach agrees on, but the shared principles are:
- Coordination: the four cards should work together. Connected and suited cards make more straights and flushes. A hand like J T 9 8 with two suits plays well; K 8 4 2 does not.
- Nut potential: with so many combinations in play, second best hands lose a lot. Prefer hands that can make the best possible straight or flush.
- Danglers: a fourth card that fits nothing turns a four-card hand into a weaker three-card one.
- Aces: A A with suited side cards is the strongest start, but at about 1 in 39 hands it does not come often and it is rarely a big favourite after the flop.
- In Hi/Lo: hands with A 2 or A 3 plus a high pair or suited ace can win both halves.
Where to play Omaha in Canada
Each province's lottery corporation runs its own regulated poker site. In Quebec, OK POKER on Espacejeux lists Omaha and Omaha haut/bas among its games, with no limit, pot limit and fixed limit versions. Who may play online, and through which sites, is set by provincial law; our guide to whether online gambling is legal in Canada explains how each province handles it.
Offshore crypto sites rarely offer peer to peer poker. Most of their "poker" is casino style, played against the house, which is a different game with a fixed edge; our page on the highest RTP casino games in Canada covers house games.
Common mistakes from Hold'em players
- Playing a hand because it contains one pair or two big cards.
- Reading a four-card flush or straight on the board as your hand.
- Calling big bets with a non-nut flush draw.
- Forgetting that pot limit raises grow fast: three raises pre-flop can put a full stack in.
- In Hi/Lo, chasing a low with a hand that has no high value, then splitting a small share of the pot.
Sources
Key terms
- House edge
- The casino's built-in average advantage on a bet, expressed as a percentage of the amount wagered.
- Return to player (RTP)
- The percentage of total bets a game is designed to pay back to players over a very large number of rounds.
- Random number generator (RNG)
- Software that produces random outcomes for casino games; most slots and table games use a certified RNG rather than provably fair seeds.