GTD stands for guaranteed. The number printed next to it is the minimum prize pool the site promises to pay out, no matter how many players actually enter. A tournament listed as $100K GTD will pay out at least $100,000 in prizes even if the buy-ins collected add up to less than that. If turnout is short, the site makes up the difference from its own pocket.
That single rule is the reason the letters GTD matter to anyone thinking about value. This guide explains how a guarantee is funded, the two things that can happen to it, why the shortfall case is where free money appears, and how to read a lobby to spot it before registration closes.
You will see GTD attached to the prize pool figure in a tournament's name or details. A few examples you will recognise from any online schedule:
$100K GTD means a guaranteed prize pool of $100,000.Sunday Million $1M GTD means at least one million dollars in prizes.$5K GTD means a small daily event guaranteed to pay out at least $5,000.The guarantee is a floor, not a ceiling. If more players enter than the guarantee needs, the prize pool climbs past the guaranteed figure. The GTD number never falls; it only tells you the least you can expect the pool to be.
Every entry pays a buy-in split into two parts: the amount that goes into the prize pool, and the fee the site keeps (the rake). A $109 entry, for example, is usually written as $100 + $9, where $100 goes to the players and $9 is the site's fee.
The prize pool grows by that $100 for each entry. Whether the guarantee is met comes down to one comparison: total prize-pool contributions versus the guaranteed figure. That comparison has exactly two outcomes.
When enough players enter, the prize pool passes the guaranteed number and keeps growing with every new entry. The guarantee becomes irrelevant; the pool is simply the sum of all contributions. Popular events like a Sunday major almost always blow past their guarantee, so the GTD figure is just a marketing floor that turnout easily clears.
When the buy-ins collected do not reach the guarantee, the site is contractually bound to pay the guaranteed amount anyway. It tops up the shortfall from its own funds. That injected money is called an overlay, and it is added prize money that no player paid for. It gets distributed through the normal payout structure to whoever finishes in the money.
An overlay is the single most player-friendly thing that can happen in a tournament, because it raises the expected value of every seat at once. For a full breakdown of the mechanics, see our explainer on what a poker tournament overlay is.
Take a $100,000 guaranteed event with a $100 + $9 buy-in, so $100 of each entry goes to the prize pool.
| Scenario | Entries | Buy-ins to pool | Result |
|---|---|---|---|
| Guarantee met exactly | 1,000 | $100,000 | No overlay, pool = $100,000 |
| Turnout strong | 1,400 | $140,000 | No overlay, pool = $140,000 |
| Turnout short | 850 | $85,000 | $15,000 overlay added by the site, pool = $100,000 |
In the short-turnout row, the site adds $15,000 that came from nobody's buy-in. Spread across 850 entrants, that overlay is worth roughly $17.65 of extra equity per entry on a $100 buy-in, before any skill edge. You do not need to win it directly; it lifts the value of the whole prize pool you are already competing for. This is why GTD events with soft turnout are worth seeking out, and why an untouched guarantee near the registration deadline is a signal, not noise.
Guarantees are a marketing tool. A big GTD number attracts entries, because players want to compete for a large, dependable prize pool rather than a small uncertain one. Most of the time the guarantee is comfortably beaten and it costs the site nothing. The overlay is the site's occasional cost of running that promise, usually on off-peak events, new schedules, or overly ambitious guarantees. From the player's side, that occasional cost is your occasional bonus.
You can estimate whether a guarantee is at risk with two numbers the lobby shows you: the guarantee and the current registered entries. The method:
The catch is doing this by hand across every event, on every site, while you are already playing. There are hundreds of guaranteed tournaments running at any moment across the major networks, and the overlay is only knowable in the final minutes before registration closes. That timing pressure is exactly why most overlays go unclaimed by the people who would benefit most.
Because a guarantee's outcome is only clear late, GTD events tie directly into registration strategy. In standard multi-table tournaments, entering late is already efficient: GTO Wizard's ICM research on late registration found a late-entered seat is worth about 10.9% more than the buy-in in ICM equity, and about 29.76% more in a satellite. Progressive knockouts are the exception, where a late starting stack loses about 14% of its value, so those are worth entering on time. When you combine correct timing with an event that is heading for an overlay, you capture two edges in the same registration. Our guide on whether late registration is worth it covers the format-by-format math.
The guarantee works the same way in every format, but how you should treat late entry differs:
| Format | How the guarantee behaves | Timing note |
|---|---|---|
| Standard MTT | Overlay tops up a short pool | Late reg is efficient |
| Satellite | Guarantees a number of seats; short turnout can mean extra seats or added value | Late reg seat equity is highest here |
| Mystery Bounty | Guarantee applies to the prize and bounty pools | Late reg is strong, bounties often unlock on Day 2 |
| Progressive KO | Overlay tops up a short pool | Enter on time, a late stack loses bounty value |
For the satellite case specifically, see satellite strategy tips; for the knockout formats, see mystery bounty vs progressive knockout.
Knowing what GTD means is the easy part. Acting on it in real time is the hard part, because an overlay is only visible in the last minutes before registration closes, across hundreds of simultaneous events on different sites.
Profitmaxxer scans 12 poker networks every 30 seconds, compares each guaranteed prize pool against the buy-ins collected, and sends a Telegram alert the moment an overlay appears or a profitable late-registration window opens. You set your filters once (buy-in range, format, minimum guarantee) and only hear about the spots that fit your game. Live totals are on the public stats page.
Max Late Reg watches guaranteed prize pools across 12 networks and alerts you when an overlay opens or the math says it is time to register. Set it once, get pinged when it matters.
Try Max Late Reg on TelegramGTD means guaranteed, and the number beside it is the minimum prize pool the site promises regardless of turnout. If entries clear that figure, the pool simply grows. If they fall short, the site adds the difference as an overlay, which is free equity spread across everyone in the money. The guarantee is a marketing floor for the site and an occasional bonus for you. The skill is spotting a shortfall before registration closes, then combining it with correct entry timing to stack two edges in one buy-in.
Late registration figures referenced from GTO Wizard's ICM late registration research. Overlay example figures are illustrative.