Theoretical Loss (Theo): the Number Behind Every Comp
Last reviewed: July 2026
To the comp system, you are not a person who won or lost last Tuesday. You are a rate: a stream of wagers with a known edge running against it. Theoretical loss, theo, is that rate multiplied out over your session, and it is the single number your rating, your mailers, and your host’s budget are all priced from.
The formula
Theo = average bet × decisions per hour × hours played × house edge
Four inputs, and you control three of them:
| Input | Who sets it | Typical values |
|---|---|---|
| Average bet | You | whatever you actually spread |
| Decisions per hour | The game & table pace | blackjack ~70 · roulette ~38 · baccarat ~72 · craps ~30 resolutions · slots/VP ~600 |
| Hours played | You | tracked by the pit or your card |
| House edge | The game & your strategy | blackjack ~0.5% · Banker 1.06% · pass line 1.41% · double-zero roulette 5.26% |
The first three multiply into total wagered (the casino calls it handle or coin-in); the edge converts wagered dollars into expected win. Note what’s absent: your results. Theo is expected value arithmetic: actual wins and losses are variance around it, and the comp system mostly doesn’t care.
Worked examples (same $25, wildly different theo)
- $25 blackjack, basic strategy, 4 hours: 25 × 70 × 4 × 0.005 ≈ $35 theo
- $25 American roulette, 4 hours: 25 × 38 × 4 × 0.0526 ≈ $200 theo
- $1/spin slot at 96% RTP, 4 hours: 1 × 600 × 4 × 0.04 ≈ $96 theo: on just $2,400 of coin-in
Same wallet, same hours: the roulette player is worth nearly six times the blackjack player to the casino, and will be comped accordingly. That is the entire logic of comp offers in one comparison: generous comps track a generous edge.
Why speed is the silent multiplier
Players fixate on bet size, but decisions per hour scales theo just as linearly. Slots at 600 spins/hour generate enormous handle from small bets; a full craps table is slow (a pass-line “decision” spans several rolls), which is one reason the classic advice (slow games, low edges, full tables) is genuinely comp-efficient. Playing heads-up against a dealer doubles your pace, and your theo, without changing anything else.
What theo means for you
- Your comps are pre-priced. A property reinvesting ~30% of a $200 theo day has ~$60 of you-specific budget. Asking for a $40 meal isn’t cheeky: it’s inside your number.
- The cheapest theo per hour of fun is a low-edge game played slowly. That’s also the cheapest gambling, full stop.
- Never generate theo to earn a comp. The comp is a fraction of the theo; the theo is the cost. Betting longer or bigger “for the points” hands the casino 100 cents to claw back 25.
Run your own session through the comp calculator, it uses the exact edges from our verified engines and shows theo, comp value, and the honest bottom line side by side.