Omaha 8 (Limit Omaha Hi⁠-⁠Lo) rules

• PLO8 with Fixed limit betting.
• The pot is split between the high and an 8-or-better low; with no low, the high takes it all.

Base: PLO8

A summary you can read without PLO8:

• Your hand uses exactly two of your four hole cards and exactly three of the five board cards
• The pot is split between the high and an 8-or-better low. With no low, the high takes it all
• Fixed limit betting

Differences from PLO8:

• Bets and raises move one unit at a time. Small bet preflop and on the flop, big bet on the turn and river
• The SB is half the small bet, the BB equals the small bet
• Each round caps at 4 bets

Four hole cards, two + three, and the high/low split are the same as PLO8.

Example. At 10/20 the flop pot is 60 and the opponent bets 10. In PLO8 you add the pot after your call, 80, so the largest raise is to 90 in total. In O8 you can raise only to 20.

Sources

• Poker TDA Rules (2024 version: Rules 47 and 48; short all-in raises and the number of raises)
• Robert Ciaffone, “Robert’s Rules of Poker” (the half-bet rule in limit)
• PokerNews and Wikipedia rules pages for each game