PokerSolver
PokerSolver/6-max · 20bb · SB 0.5bb · 5% rake, cap 3bb/BB vs SB 3-bet 5bb

BB vs SB 3-bet 5bb

6-max · SB 0.5bb · 5% rake, cap 3bb (blinds 0.5/1bb) · 20bb · SB limps, BB isolates to 2.5bb, SB 3-bets to 5bb · Big blind to act

6-max · 20bb · SB 0.5bb · 5% rake, cap 3bbChange game
Stacks (bb), if they differ
Pot 7.5bbYour cards?
2.5bb
5bb

Tap your two cards.

Big blind's range

1,216 of 1,326 combos get here
Fold 63%Call 20.1%All-in 20bb 16.9%
Tap a hand, or type one above, to see its exact mix.

What is the GTO play for the big blind (BB) when SB limps, BB isolates to 2.5bb, SB 3-bets to 5bb in 6-max · SB 0.5bb · 5% rake, cap 3bb at 20bb?

SB limps, BB isolates to 2.5bb, SB 3-bets to 5bb in 6-max · SB 0.5bb · 5% rake, cap 3bb, 20bb: the big blind (BB) folds 63%, calls 20.1% and goes all-in 20bb 16.9%. Always call: AA, QJs, Q6s-Q7s, KJo, K9o. Always all-in 20bb: QQ, 77-TT, 55, AQs+, A8s, AQo+, ATo. Mixed: KK, JJ, 66, 33-44, A9s-AJs, A6s-A7s, A2s-A4s, K2s+, Q8s-QTs, Q4s-Q5s, J3s+, T6s-T8s, 96s+, 92s, 86s+, 83s, 76s, 74s, 64s, 53s+, 42s, AJo, A2o-A9o, KQo, KTo, K2o-K3o, Q9o+, Q7o, J9o+, T9o, 98o.

Always fold
Q2s-Q3s, T9s, T4s-T5s, T2s, 95s, 93s, 84s, 82s, 75s, 72s-73s, 65s, 62s-63s, 52s, 43s, 32s, K4o-K6o, Q8o, Q4o-Q6o, J2o-J8o, T3o-T8o, 95o-97o, 92o-93o, 84o+, 82o, 74o+, 65o, 62o, 52o+, 43o, 32o
Always call
AA, QJs, Q6s-Q7s, KJo, K9o
Always all-in 20bb
QQ, 77-TT, 55, AQs+, A8s, AQo+, ATo
Mixed
KK, JJ, 66, 33-44, A9s-AJs, A6s-A7s, A2s-A4s, K2s+, Q8s-QTs, Q4s-Q5s, J3s+, T6s-T8s, 96s+, 92s, 86s+, 83s, 76s, 74s, 64s, 53s+, 42s, AJo, A2o-A9o, KQo, KTo, K2o-K3o, Q9o+, Q7o, J9o+, T9o, 98o
Settings: 6-max · 20bb · SB 0.5bb · 5% rake, cap 3bb (small blind 0.5bb, big blind 1bb, 20bb stacks, 5% rake capped at 3bb; before the flop, rake only after a 3-bet). Solver: HoldemResources Calculator (HRC) (HRC CI 24.03). 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: GGPoker Rush & Cash NL2, NL10, NL50, NL100, NL200; GGPoker regular cash NL200; Natural8 Rush & Cash NL2, NL10, NL50, NL100, NL200; Natural8 regular cash NL200.

Close: GGPoker regular cash NL2, NL10 (rake cap 10bb there, 3bb here).

Close: GGPoker regular cash NL50 (rake cap 8bb there, 3bb here).

Close: GGPoker regular cash NL100 (rake cap 5bb there, 3bb here).

Close: PokerStars Zoom NL10 (rake cap 15bb there, 3bb here; 4.5% rake there, 5% here; no rake when no flop is dealt there).

Close: PokerStars Zoom NL50 (rake cap 4bb there, 3bb here; no rake when no flop is dealt there).

Close: PokerStars Zoom NL100 (rake cap 2.5bb there, 3bb here; no rake when no flop is dealt there).

Close: PokerStars cash NL10 (rake cap 15bb there, 3bb here; 4.25% rake there, 5% here; no rake when no flop is dealt there).

Close: PokerStars cash NL50 (rake cap 4bb there, 3bb here; no rake when no flop is dealt there).

Close: PokerStars cash NL100 (rake cap 2.5bb there, 3bb here; no rake when no flop is dealt there).

Close: CoinPoker cash NL2, NL10 (rake cap 10bb there, 3bb here; only its tables without antes).

Close: CoinPoker cash NL50 (rake cap 8bb there, 3bb here; only its tables without antes).

Close: CoinPoker cash NL100 (rake cap 5bb there, 3bb here; only its tables without antes).

Close: CoinPoker cash NL200 (only its tables without antes).

Close: WPT Global cash NL10, NL20 (rake cap 6bb there, 3bb here; 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 4bb there, 3bb here; 4% rake there, 5% here; no rake when no flop is dealt there; only its tables without antes).

Close: WPT Global cash NL400, NL600, NL1000 (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 10bb there, 3bb here).

Close: Natural8 regular cash NL50 (rake cap 8bb there, 3bb here).

Close: Natural8 regular cash NL100 (rake cap 5bb there, 3bb here).

Close: ACR Poker cash NL2 (rake cap 150bb there, 3bb here; its page does not say whether pots that end before the flop are raked).

Close: ACR Poker cash NL10 (rake cap 30bb there, 3bb here; its page does not say whether pots that end before the flop are raked).

Close: ACR Poker cash NL50 (rake cap 6bb there, 3bb here; its page does not say whether pots that end before the flop are raked).

Close: ACR Poker cash NL100 (its page does not say whether pots that end before the flop are raked).

Close: ACR Poker cash NL200 (rake cap 1.5bb 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); natural8.com/en/poker/rush-and-cash (fetched 2026-10-31; caps $0.06 to $6, 3bb at every stake); the same GGNetwork pools as GGPoker, whose preflop rake we confirmed on GG exports; natural8.com/en/poker/texas-holdem (fetched 2026-10-31; caps by players dealt in, 3-bet pots raked before the flop); 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); acrpoker.eu/real-money/poker-rake-calculation/ (fetched 2026-10-31).