WagerLabel

Methodology & formulas

Every figure and traffic-light colour on WagerLabel is computed by deterministic formulas from published bonus terms and slot RTP. Operators cannot pay to change a tile colour.

1. Deposit match bonuses

For a deposit D, bonus amount B, wagering multiplier W, and slot return to player RTP(default 96%, giving a house edge of 4%):

  • Bonus-only wagering: required bets = W × B.
  • Deposit + bonus (D+B) wagering: required bets = W × (D + B). Effective multiple = required bets ÷ B.
  • Average playthrough cost: expected cost = required bets × (1 − RTP).
  • Expected value (EV): max(B − expected cost, −D). Because a player cannot lose more than the cash they deposited, average loss is capped at −D.

2. Free spins & qualifying stakes

For N spins at face value S per spin, with wagering W on spin winnings and an upfront qualifying cash stake Q:

  • Average spin winnings: B = N × S × RTP.
  • Total bets required: Q + (W × B).
  • Average cost: total bets × (1 − RTP).
  • Expected net value: max(B − average cost, −Q). Even when W = 0 (“no-wagering spins”), staking £10 or £20 first carries a statistical house-edge cost of £0.40 or £0.80 at 96% RTP.

3. The four traffic-light tiles

  • Wagering: Green (Fair) up to 15× the bonus alone (retains ≥ 40% of bonus EV at 96% RTP); Amber (Watch) 16× to 31×; Red (Harsh) above 31×. D+B multipliers are converted to bonus-only equivalents first.
  • Your own money: Green when your deposit is untouched by wagering or no stake is needed; Amber when cash must be staked once to unlock the reward; Red when your deposit is multiplied into D+B wagering.
  • Win cap: Green for uncapped cash winnings; Amber when a maximum win/cashout applies; Red when the cap is smaller than the bonus itself; Grey when unstated.
  • Time limit: Green for 30+ days; Amber for 7–29 days; Red under 7 days; Grey when unstated.

4. Great Britain regulatory baseline (19 January 2026)

Under UK Gambling Commission Licence Conditions and Codes of Practice (LCCP Social Responsibility Code 5.1.1, effective 19 January 2026), Great Britain licensees may not apply bonus-fund wagering requirements above 10 times, and may not bundle mixed-product incentives (such as sports betting + slots). WagerLabel checks operator licence status directly against the official UKGC Public Register.

5. Model limitations & JSON API

RTP is a long-run average across millions of spins; individual short sessions experience high variance and can lose the full deposit regardless of a positive EV rating. Game weighting below 100%, maximum stake rules (commonly £5/spin), and excluded payment methods must always be checked on the operator’s terms page.

Developers and AI assistants can query the exact calculation engine via GET /api/calc (see /llms.txt for parameters).