Reinvestment Rate: the One Number That Explains Every Comp Offer You Get
Two players lose the same amount and get wildly different offers. The reason is a single internal number, and understanding it changes how you play.
Two players finish a weekend down $800 each. One gets a mailer with three free nights and $200 in free play. The other gets nothing.
They are not being treated unfairly. They triggered different numbers.
Casinos do not comp you on what you lost. They comp you on your theoretical loss — what the maths says you should lose given your bet size, speed and game — and they return a percentage of it. That percentage is the reinvestment rate. Actual results barely matter, which is why a lucky player and an unlucky one at the same stakes get near-identical offers.
Theoretical, not actual
Your theoretical loss is calculated from tracked play:
A player betting $50 a hand for four hours on a game with a 1% edge against them generates roughly $140 of theoretical loss, whether they walked out up $2,000 or down $2,000.
This is the single most misunderstood thing about comps. Players believe losing more earns more. It does not. Losing more earns exactly the same as winning more, provided the bets and hours were identical.
The reinvestment percentage
Operators return a share of that theoretical figure as comps — rooms, food, free play, events. The share varies by property, by market, by how badly they want your segment, and by how full the hotel is that week.
That last row is the practical one. A casino opening or repositioning wants your play history more than it wants this quarter's margin, and its offers reflect that. The best comp value in any market is frequently at the property with something to prove.
Why slots out-earn tables for comps
Slot play is tracked perfectly — every spin, every wager, to the cent. Table play is estimated by a floor supervisor eyeballing your average bet and noting your time.
That asymmetry matters. Slot players tend to generate more recorded theoretical loss per real dollar risked, because the tracking is complete and the decision rate is high: a slot player might make 500 to 700 wagers an hour against a blackjack player's 70.
Which is why the comp mail of a modest slot player often looks better than that of a table player who risked more money.
Where the standard advice is wrong
"Play more to get better comps" is technically true and practically terrible. Any comp is a fraction of theoretical loss, and the fraction is always less than one. You cannot profit by generating more theoretical loss — you are buying rooms at a discount with money you expected to lose anyway.
The genuinely useful move is the opposite: given a level of play you were going to do regardless, make sure it is all tracked, all on one card, and concentrated at a property whose reinvestment is generous rather than spread thin across four operators where none of it reaches a tier threshold.
Same money risked. Substantially different return.
Topics
- comps
- math
- loyalty