How we rate

Trust is our product. Every rating on Gamblerfy is based on evidence, follows a consistent method, and shows the date it was last checked. Here's exactly how it works — and you can run the numbers yourself with our free tools.

The Bonus Value Score (0–100)

A headline like "100% up to $500" says almost nothing about what a bonus is really worth. Our score estimates the real expected value of an offer from its terms. Each factor below links to a plain-English guide, and you can compute the score for any offer in the Bonus Value Calculator:

• Wagering (rollover) and whether it applies to bonus only or deposit + bonus.
• Game contribution and the effective house edge you must play through.
• Maximum cashout on winnings from the bonus.
• Minimum odds / eligible games and any excluded games — plus whether the bonus is sticky or cashable.
• Expiry — whether the required play is realistic in the time given.

The full formula and its assumptions are published so anyone can check our math. Every number is verified before it goes live. For the warning signs that drag a score down, see our bonus red flags checklist.

Tools that use this method

• Bonus Value Calculator — score any bonus 0–100 (deposit match, no-deposit, cashback or sticky).
• Odds Converter — decimal ⇄ fractional ⇄ American, plus implied probability.
• Margin & Fair Odds Calculator — the bookmaker's margin (vig) and the no-vig fair odds.

Operator ratings

Casinos and sportsbooks are scored across weighted dimensions — licensing & safety, bonus fairness, payout speed and limits, odds/game quality, platform, support, reputation and responsible-gambling tools. Each dimension has defined criteria and supporting evidence. Operator reviews go live as each one's terms and licence are verified — we never publish a rating we haven't checked.

Independence & how we're funded

Gamblerfy may earn a commission when you sign up with some operators. This never affects a score or a ranking — the rating is decided by the method above, not by who pays. Any affiliate relationship is disclosed. See our editorial policy for the full picture.

Freshness & corrections

Bonuses and terms change often. We re-check offers on a schedule and whenever an operator changes its terms, and we date every page. Spot something wrong? Tell us and we'll fix it fast.

Safety first

We only cover operators licensed in your country, and we state harmful terms plainly. Gambling should be entertainment, never a way to make money. Play responsibly. For the legal backdrop, see our reference on gambling advertising rules by country.