PLO5 vs PLO4: Key Differences and How to Adjust
Last updated June 19, 2026 · ~6 min read
Five-card Pot-Limit Omaha (PLO5) and four-card Omaha (PLO4) share the same rules and hand rankings, but the single extra hole card changes the game more than it looks. Here's what shifts — and how to adjust if you're moving between the two.
1. More cards, far more combinations
Your final hand always uses exactly two hole cards. In PLO4 a four-card hand contains 6 two-card combinations (4 choose 2). In PLO5 a five-card hand contains 10 (5 choose 2) — almost double. That means each PLO5 hand has more ways to connect with the board.
2. Stronger hands, more often
Because every player has more combinations, big hands show up more frequently in PLO5. Sets, two pair, and non-nut straights all go down in relative value. A hand that is a clear winner in PLO4 is often only middling in PLO5.
| PLO4 | PLO5 | |
|---|---|---|
| Two-card combos per hand | 6 | 10 |
| Made-hand frequency | Lower | Higher |
| Value of non-nut hands | Moderate | Lower |
| Variance | High | Higher |
| Premium on nut-quality | Important | Critical |
3. Equities run even closer
Omaha equities are already compressed compared to Hold'em; PLO5 compresses them further. Preflop all-ins are frequently near coin-flips, so edges come from playability and position rather than raw preflop equity. You can see this directly in the equity calculator by comparing the same matchup in 4-card vs 5-card mode.
4. Draws get bigger — and so does the trap of non-nut draws
With more cards, monster wrap and flush draws are common in PLO5. That's good when you hold the nut version, but dangerous when you don't: a second-nut flush draw or a low end of a wrap will be dominated far more often than in PLO4. Drawing to the nuts matters even more.
5. Preflop adjustments
- Demand more nut potential. Ace-suited and connected high cards rise in value; low and middling holdings fall.
- The fifth card must work. "Four good cards plus a brick" is just a four-card hand. Evaluate by your best four, then ask if the fifth adds nut equity.
- Position is worth even more because realizing equity in close spots is harder.
For position-by-position ranges in both formats, browse the PLO5 and PLO4 range tools and read the preflop strategy guide.
Which should you play?
PLO5 is looser, bigger, and higher-variance — popular in modern online pools and great for action. PLO4 is the classic, slightly more controlled game with deeper strategic literature. If you're learning, drilling preflop fundamentals in both formats builds a stronger overall Omaha game, because the same principles — nuttiness, connectivity, position — drive both.