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.