Big Blind Ante (BBA) (BBA)

Also known as: Big Blind Ante, BB ante, big-blind ante

A format where the big blind alone posts the entire table's ante in one chunk, speeding up play.

Instead of every player posting a small ante each hand, the Big Blind Ante has the player in the big blind post the whole table's ante at once — typically equal to one big blind. The total dead money in the pot is the same as a traditional ante structure; only the mechanics change, which dramatically speeds up dealing and removes ante-collection errors.

Strategically the BBA is identical to a standard ante in its effect on ranges: the extra dead money lowers the price to attack the blinds, so opening ranges widen, steal frequencies rise, and defense from the blinds gets cheaper. The big blind is investing more per orbit (their blind plus the ante), which justifies defending wider against late-position opens.

For stack math, fold the ante into your M-ratio and stack-to-blind ratio exactly as you would any ante — the pot you are stealing is bigger than the blinds alone suggest.