What is a Bounty in Poker? PKO & Mystery Bounty Math
A bounty is a cash prize you win instantly for eliminating a player from a bounty tournament. In the standard progressive knockout (PKO) format, half of each buy-in funds the bounties: knock someone out and you collect half their bounty in cash while the other half is added to your own head. The key number: in a $10 PKO with 10,000-chip starting stacks, a $5 starting bounty is worth 5,000 chips at face value — half a starting stack riding on every elimination.
The three bounty formats
All bounty tournaments pay you for knockouts, but the mechanics differ:
- •Fixed knockout (KO): every player carries the same fixed bounty (say $5 of a $25 buy-in), paid in full to whoever busts them. Simple, but bounties stay small.
- •Progressive knockout (PKO): the dominant format. Bust a player, collect half their bounty in cash; the other half is added to your own bounty. Bounties snowball, and by the final table the big ones can rival pay jumps.
- •Mystery bounty: knockouts (usually after a trigger point like day 2) earn a random pull from an envelope pool — mostly small amounts, a few huge ones. You keep the entire envelope.
What a bounty is worth in chips
To use a bounty in an actual decision, convert it into chips at the tournament's exchange rate: bounty chips = bounty $ / (buy-in / starting stack). Worked example, straight from our PKO calculator's model: a $10 PKO with a 10,000-chip starting stack prices each chip at $0.001. A $5 starting bounty is therefore worth 5,000 chips at face value — and since a PKO pays you only half in cash right away, the claimable part is 2,500 chips. That's a quarter of a starting stack added to any pot where you can eliminate the opponent, before counting a single chip already in the middle.
How bounties change your calls, exactly
The bounty works like extra money in the pot — but only when you cover the all-in player. Standard call: needing to call 4,000 into a 6,000 pot requires 4,000/(6,000+4,000) = 40% equity. Now add a claimable bounty worth 2,500 chips: 4,000/(6,000+4,000+2,500) = 32% — a full 8 percentage points looser. That's the difference between folding and calling with a hand like A-9 offsuit versus a shove. Two conditions: your stack must cover theirs (no cover, no bounty, no adjustment), and late in the tournament ICM pressure pushes the other way, so the bounty adjustment shrinks near big pay jumps.
Mystery bounty math
In a mystery bounty, the number that matters is the average remaining envelope: total remaining bounty money divided by envelopes left. If $100,000 remains across 500 envelopes, each pull is worth $200 on average — that average, not the $10,000 headline envelope, is what you price calls with (the expected value of a random draw is the mean of what's left). Your chance the next pull is the top prize is simply top envelopes remaining / total remaining: 1 in 500 in this example, improving every time someone else pulls a dud. Convert the $200 average to chips with the same formula as above and add it to the pot when you can bust someone.
Related tools
Frequently asked
What is a progressive knockout (PKO) tournament?
A bounty format where half of each elimination's bounty is paid to you in cash and half is added to your own bounty. Everyone's bounty grows over time, so late-game knockouts can be worth many buy-ins. Half of the total buy-in pool funds bounties; the rest is a normal prize pool.
Why do I only count half the bounty in a PKO call?
Because that's the part you collect immediately and certainly. The half added to your own head can only be monetized by someone else busting you — it has some deferred value (it makes others call you wider), but the standard model conservatively counts only the cash half when adjusting pot odds.
Should you call wider in bounty tournaments?
Yes, when you cover the all-in player — the bounty is extra pot equity, and our worked example shows required equity dropping from 40% to 32%. When you don't cover them, no bounty is in play and normal ranges apply. Near the money, ICM pressure partially offsets the bounty incentive.
How does a mystery bounty differ from a PKO?
In a PKO the bounty on each head is known and you collect half. In a mystery bounty every knockout (once active) earns a sealed random envelope, and you keep all of it. Decision math uses the average remaining envelope value, because a random pull's expected value is the mean of the remaining pool.
What bounty split is standard?
50/50 — half the buy-in to the regular prize pool, half to bounties — used by PokerStars Bounty Builders, most GGPoker bounty events, and the majority of live PKOs. Always check the lobby: the exact starting bounty is listed, and some formats weight the bounty pool more heavily.
Do bounty tournaments have more variance?
The prize pool is spread across many small payouts (bounties) instead of concentrating entirely at the final table, which softens one source of variance — but correct PKO strategy means more all-ins and wider calls, which adds another. Net effect: your results depend more on knockout volume and less on one deep run.
Terms used in this article
Keep reading
New to poker? Take the free 15-minute crash course →