Button Opening Ranges: How Wide Is Too Wide?

The button is the best seat in poker and the most profitable, and every serious player knows the headline advice: open wide. The trouble is that "wide" is doing an enormous amount of work in that sentence. Too many players translate it as "open almost anything", torch money with unplayable offsuit junk, and then overcorrect into folding hands that print. The solved answer is specific: the button opens a very wide range with a real boundary, and that boundary moves with stack depth and rake. This piece is about where the line actually sits, why it sits there, and the two directions players miss it from.

Why the button opens the widest range

Every opening range in 6-max is an answer to the same question: how likely is this open to end well, given who is left to act and where I will sit for the rest of the hand? The button gets the best answer on every axis at once.

First, only two players remain. Under the gun, five opponents wait behind you, five chances that someone holds a hand that dominates yours. On the button that number is two, and the probability that both blinds miss is high enough that a raise very often just takes the pot immediately. Second, both remaining players have money already committed. The blinds are forced bets; attacking them is attacking dead money, and the open risks a small raise to win it. Third, and most valuable, position is guaranteed. Whatever the blinds do, you act last on every postflop street. Marginal hands that would be miserable to play out of position realize their equity dramatically better with the betting lever always in your hand, which quietly upgrades hundreds of borderline holdings from unplayable to profitable.

There is a fourth edge worth naming: you close the preflop action against a call. When a blind just calls your open, there is no one left to squeeze, no reopening of the betting, and you see a flop in position against a capped range. Every other opening seat carries the risk of the pot being blown up behind them; the button alone gets to shape the hand on its own terms.

For how the button compares seat by seat, 6-max cash RFI ranges by position surveys the whole table. This piece stays where the money is thickest.

Where the solved line sits

All of those advantages make the button range wide; none of them make it unbounded. The solved 6-max button range takes in a large share of the deck, far more than any other seat: essentially every pair, every suited ace, broadways, a deep run of suited connectors and gappers, weak suited kings and queens that no earlier seat would touch, and a band of offsuit hands that would be easy folds anywhere else. What it does not take is the true bottom of the deck. The weakest offsuit hands, the ones with no high card strength, no straight potential worth the name, and no suit, lose money even with every positional advantage in the world, because they make nothing often enough and make second-best hands when they do connect.

The important mental shift is to stop thinking of the button range as "loose" and start thinking of it as exactly calibrated. Every hand inside the line is there because it profits against correct blind defense; every hand outside it fails that test with position and dead money already counted in its favor. The line is not a style choice. It is an output, and as GTO preflop hands by position argues for the table as a whole, the raw ranking of your two cards is the least informative input that produces it.

Where players over-open: the junk that feels free

The first way to miss the line is from above, and it usually comes from a half-understood truth. Players hear that the button prints money, notice that solvers open wide there, and round the lesson up to opening any two cards whenever it folds around. The extra opens are almost all of a type: dead offsuit junk, low and disconnected, with nothing going for it but hope.

The cost is disguised because each incident is small. A junk open that steals the blinds looks identical to a good open that steals the blinds, so the leak never announces itself. It gets collected from you in the other branches: the times a blind defends and you play three streets with nothing, and above all the times you get 3-bet. Aggressive blinds are the natural predator of a too-wide button, because every hopeless open you add is pure raise-and-fold fodder for them. Against a re-stealing big blind, the bottom of an over-wide range does not just underperform, it funds the opponent's whole strategy. The wider you open, the more attractive 3-betting you becomes, and junk hands have no answer to the response they invite.

Where players under-open: folding hands that print

The opposite miss is quieter and probably costs the average solid player more. Tight players look at the genuinely wide solved button range and flinch at the bottom of it: low suited gappers, weak suited kings and queens, offsuit hands they have filed under "trash" since they learned the game. These hands look weak, and from most seats they are. On the button they are profitable opens, and folding them is burning money in a way no session review will ever surface, because a fold generates no data. You never see the pots you declined to win.

What the flinch misses is that these hands are not being opened for their showdown value. They are being opened because the steal succeeds often enough to carry them, and because when they are called, suitedness and connectedness give them flops they can continue on, in position, against a capped defending range. A weak suited hand on the button is a bundle of small edges, fold equity, playability, position, that add up to a profitable open even though the cards themselves look like nothing. Players who fold them are not being disciplined. They are applying an early-position hand filter to the one seat where it does not belong.

Depth moves the line

The button range is not one object; it is a family of ranges indexed by stack depth, and the solve moves both the size and the composition as stacks change. The Simple GTO 6-max cash solves, which run from 40bb to 150bb, open 2.5bb from the button at 80bb and deeper, and trim the open to 2.2bb at 40bb to 60bb.

The sizing logic is straightforward: a steal risks the raise to win the blinds, and the smaller the raise that still does the job, the better the price on every steal. At shallower depths the smaller open also keeps the pot controlled when stacks can be committed quickly. The composition logic is the interesting part. Deep, the speculative bottom of the range earns much of its value from implied odds: suited and connected hands are chasing big pots on the rare flops they smash, and deep stacks mean those pots exist. As stacks shorten, the big pots shrink and the chase stops paying, so the speculative hands lose ground while high-card strength, which wins the small and medium pots that actually occur, holds its value. The line does not simply move in or out as depth changes; the range changes shape, and a player carrying one memorized button range across all depths is wrong at most of them.

Rake squeezes the boundary

The other force on the line is rake, and it points in one direction: tighter. Every marginal open in a solved range is marginal by definition, profitable by a whisker against correct defense. Rake taxes the pots that see a flop, and a tax on thin edges eliminates the thinnest ones outright. The Simple GTO cash ranges are solved on the 500z rake structure precisely so the boundary hands reflect the game as it is actually dealt, not a rake-free abstraction where dozens of extra combos falsely clear the bar. The button pays rake like everyone else, and its stealing-heavy strategy lives disproportionately in exactly the marginal territory rake attacks. The full mechanism, and why it hits calling ranges even harder than opens, is covered in how rake changes preflop ranges.

The practical takeaway: a rake-free chart from an old forum post is loosest exactly where being loose is most expensive. If your reference range was not solved with rake in it, your button boundary is wrong.

The blinds decide how wide is too wide

Everything above describes the equilibrium line, the range that profits against blinds who defend correctly. Real blinds do not, and the button is the seat where their errors are worth the most to you. Against blinds who fold too much, the correct exploitative response is to open wider than the solve, because the steal component of every marginal hand just got a raise. Against a big blind who 3-bets relentlessly, the bottom of even the correct range suffers, and trimming the weakest opens is right.

But both adjustments are measured from the solved baseline, and that is the point that separates players who adjust from players who guess. "Wider than correct" and "tighter than correct" only mean something if you know what correct is. The equilibrium button range is the reference that makes every read actionable: it tells you which hands are near the line and therefore first to add or drop, and how far a given deviation strays. Without it you are not adjusting to the blinds, you are improvising, and improvised button strategy reliably lands on one of the two misses described above.

Getting the exact range

The button is the most frequent big decision in 6-max: every orbit, often folded to you, always with the same question. How wide is too wide has a solved answer at every depth, and it is more precise than any rule of thumb can hold. The cash preflop charts show the full button range as a live, interactive grid, every depth from 40bb to 150bb, with real frequencies at the boundary where the decisions are actually hard. And the Cash Bundle makes the complete 6-max solves yours permanently, open in the Simple Preflop solver, so the seat that earns the most in your game is the one you never have to guess in again.