PokerSolver
PokerSolver/Heads-up · 100bb · SB 0.5bb · 5% rake, cap 3bb/SB vs BB iso raise 2.5bb

SB vs BB iso raise 2.5bb

Heads-up · SB 0.5bb · 5% rake, cap 3bb (blinds 0.5/1bb) · 100bb · SB limps, BB isolates to 2.5bb · Small blind / button to act

Heads-up · 100bb · SB 0.5bb · 5% rake, cap 3bbChange game
Stacks (bb), if they differ
Pot 3.5bbYour cards?
1bb
2.5bb

Tap your two cards.

Small blind / button's range

1,100 of 1,326 combos get here
Fold 30.3%Call 45.8%Raise 5/7.5bb 23.9%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the small blind / button (SB) when SB limps, BB isolates to 2.5bb in Heads-up · SB 0.5bb · 5% rake, cap 3bb at 100bb?

SB limps, BB isolates to 2.5bb in Heads-up · SB 0.5bb · 5% rake, cap 3bb, 100bb: the small blind / button (SB) folds 30.3%, calls 45.8% and raises 5/7.5bb 23.9%. Always call: K5s, K2s, Q2s-Q7s, J6s, J2s-J4s, T5s, T2s-T3s, 95s, 93s, 84s, A6o-A8o, A2o-A4o, K5o-K9o, QJo, Q7o-Q9o, J8o+, T7o+, 98o, 87o, 76o, 65o, 54o. Always raise 5/7.5bb: 77+, 55, AJs-AQs, A6s, A2s, 86s, 76s, 43s, ATo+, KQo. Mixed: K8s, K3s-K4s, J5s, T6s, T4s, 96s, 94s, 92s, 87s, 85s, 73s-74s, 62s-63s, 53s, 42s, 32s, A9o, A5o, KTo-KJo, K4o, QTo, Q5o-Q6o, J7o, 86o, 75o, 64o.

Always fold
72s, K2o-K3o, Q2o-Q4o, J2o-J6o, T3o-T6o, 95o-96o, 84o-85o, 74o, 53o
Always call
K5s, K2s, Q2s-Q7s, J6s, J2s-J4s, T5s, T2s-T3s, 95s, 93s, 84s, A6o-A8o, A2o-A4o, K5o-K9o, QJo, Q7o-Q9o, J8o+, T7o+, 98o, 87o, 76o, 65o, 54o
Always raise 5/7.5bb
77+, 55, AJs-AQs, A6s, A2s, 86s, 76s, 43s, ATo+, KQo
Mixed
K8s, K3s-K4s, J5s, T6s, T4s, 96s, 94s, 92s, 87s, 85s, 73s-74s, 62s-63s, 53s, 42s, 32s, A9o, A5o, KTo-KJo, K4o, QTo, Q5o-Q6o, J7o, 86o, 75o, 64o
Settings: Heads-up · 100bb · SB 0.5bb · 5% rake, cap 3bb (small blind 0.5bb, big blind 1bb, 100bb stacks, 5% rake capped at 3bb; before the flop, rake only after a 3-bet). Solver: HoldemResources Calculator (HRC) (HRC CI 14.45). A jackpot fee on bigger pots is not in this solve, so lines that build big pots may be slightly too loose. Bet sizes are the solved ones; a size that is not here plays like the nearest one.

Fits exactly: no game we have checked.

Close: GGPoker regular cash NL2, NL10 (rake cap 2.5bb there, 3bb here).

Close: GGPoker regular cash NL50 (rake cap 2bb there, 3bb here).

Close: PokerStars cash NL10 (rake cap 5bb there, 3bb here; 4.25% rake there, 5% here; no rake when no flop is dealt there).

Close: PokerStars cash NL50 (rake cap 1.5bb there, 3bb here; no rake when no flop is dealt there).

Close: CoinPoker cash NL2, NL10 (rake cap 2.5bb there, 3bb here; only its tables without antes).

Close: CoinPoker cash NL50 (rake cap 2bb there, 3bb here; only its tables without antes).

Close: WPT Global cash NL10, NL20 (4% rake there, 5% here; no rake when no flop is dealt there; only its tables without antes).

Close: WPT Global cash NL100, NL200 (rake cap 2bb there, 3bb here; 4% rake there, 5% here; no rake when no flop is dealt there; only its tables without antes).

Close: Natural8 regular cash NL2, NL10 (rake cap 2.5bb there, 3bb here).

Close: Natural8 regular cash NL50 (rake cap 2bb there, 3bb here).

Close: ACR Poker cash NL10 (rake cap 5bb there, 3bb here; its page does not say whether pots that end before the flop are raked).

CoinPoker tables with antes: their own chart.

Rake sources: ggpoker.com/poker-games/texas-holdem (fetched 2026-10-31); Rush rake and preflop rake confirmed on our own GG exports (972 of 1,034 pots, 210 of 211); regular tables' preflop rule from natural8.com/en/poker/texas-holdem (same network, fetched 2026-10-31); pokerstars.com/poker/room/rake (fetched 2026-10-31); coinpoker.com/games/texas-holdem/ (caps and the preflop rule) and coinpoker.com/guides/poker-rake/ (5%), fetched 2026-10-31; wptglobal.com/poker/poker-table-rake (fetched 2026-10-31); natural8.com/en/poker/texas-holdem (fetched 2026-10-31; caps by players dealt in, 3-bet pots raked before the flop); acrpoker.eu/real-money/poker-rake-calculation/ (fetched 2026-10-31).

Rake: Wrong rake for GG: this solve caps the rake at 3bb, but GG caps heads-up NL200 at $1.50 (0.75bb). A solve with GG's cap is queued.