How We Rate Online Casinos

Last updated: 5 May 2026

Every full operator review on this site ends with a single rating between 1.0 and 10.0. The number is the product of an eight-criterion framework with fixed weights, applied identically to every operator. This page documents the framework: what each criterion measures, what weight it carries, how the formula works, what the resulting numbers mean, and what triggers an automatic downgrade regardless of how the rest of the review reads.

The framework is connected directly to the testing process described on the How We Test page. Each stage of testing produces specific observations that feed specific criteria here. The headline rating sits on the published review; the per-criterion breakdown sits next to it, so a reader can see whether an 8.4 is built from a balanced score across the eight criteria or carried by a few standouts that mask a weakness elsewhere.

1. Why a numerical rating

A number is more disciplined than a star, a colour bar or a thumb. A number forces an explicit comparison: an 8.4 has to mean something different from an 8.6 or an 8.2, and the reasoning has to be visible. A number also resists the “everything is great” pressure that creeps into review systems where the only options are gold-silver-bronze or where every operator above some line gets a green tick. The ten-point scale on this site uses every part of the range, including the lower half; not every operator is good, and the rating system has to be capable of saying so.

The trade-off is precision risk: a rating expressed to one decimal place implies more precision than the underlying observations support. The remedy is twofold. First, ratings are quantised to 0.1 (no 8.43s), and the published number is treated as the centre of a small band rather than an exact figure. Second, the per-criterion breakdown is published alongside the headline, so readers can see exactly how a number was produced and weigh the criteria according to their own priorities.

2. The eight criteria and their weights

The eight criteria below cover the full surface area of an online casino as it matters to a player. Each is scored on a 1 to 10 scale from the testing log; each has a fixed weight; the weighted sum is the headline rating.

3. The formula, with an example

The headline rating is the weighted sum of the eight criterion scores. Each criterion produces a number between 1 and 10 from the testing log; the formula is:

Rating = (S×0.20) + (B×0.15) + (G×0.15) + (P×0.12) + (W×0.13) + (C×0.10) + (M×0.08) + (R×0.07)

where S = safety/licensing, B = bonuses, G = games, P = deposit/payments, W = withdrawal, C = customer support, M = mobile, R = responsible gambling. Result is rounded to 0.1.

A worked example. Suppose an operator scores: safety 9, bonuses 7, games 8, deposits 8, withdrawal 9, support 7, mobile 8, responsible gambling 8. The arithmetic:

9×0.20 = 1.80
7×0.15 = 1.05
8×0.15 = 1.20
8×0.12 = 0.96
9×0.13 = 1.17
7×0.10 = 0.70
8×0.08 = 0.64
8×0.07 = 0.56
—————————
Sum: 8.08  →  Rating: 8.1

The published review shows both the headline 8.1 and the eight component scores. A reader for whom withdrawal speed matters more than bonus value can see the 9 on withdrawal and the 7 on bonuses, and weight accordingly. The published rating represents the framework’s judgement; readers are free to disagree with the weights and to read the breakdown directly.

4. The rating scale

The scale below assigns a verdict to each band on the rating. The verdicts are useful as shorthand; the per-criterion detail in the published review is more useful for any operator a reader is seriously considering.

RatingVerdictWhat it means in practice
9.0 – 10.0ExcellentStrong on every criterion; clearly above the average for its segment. Safety, withdrawals and responsible-gambling layers all in the top band. The operators that earn this range tend to have several years of clean track record across independent watchdog platforms.
8.0 – 8.9StrongSolid on every layer that matters, with one or two areas where the operator performs at industry average rather than above it. A reasonable choice for a reader matched to the specific strengths.
7.0 – 7.9GoodFunctional and trustworthy with concrete weaknesses that are documented in the review. Often where most established offshore operators sit. A reader should read the per-criterion breakdown before signing up.
6.0 – 6.9OK with caveatsWorkable for the right player but with at least one structural concern — slow withdrawals, restrictive bonus terms, weak responsible-gambling layer — large enough to flag as a reason for hesitation. Read the cons list before depositing.
5.0 – 5.9Below averageMultiple weaknesses or one serious one. Stronger options exist in the same segment. Recommend only with explicit reservations and only where the reader has read the full review.
1.0 – 4.9AvoidEither a serious structural problem (failed licence verification, withheld withdrawals, predatory bonus terms, ignoring self-exclusion) or a pattern of complaints that points to a high probability of bad outcomes for new players. Operators in this band are listed in the “avoid” section of comparative pages.

5. Red flags — automatic low scores

Some failures are structural. They cannot be offset by good performance elsewhere because they go to the question of whether the operator should be on the comparative pages of this site at all. The list below sets out the issues that produce automatic low scores regardless of how the rest of the review would otherwise read.

An operator can clear all the red flags above and still score moderately if its testing log is mediocre on the eight ordinary criteria. That is the right outcome: the absence of structural failures is a floor, not a ceiling.

6. When ratings change

Ratings are not static. The mechanism for updates is set out on the Editorial Policy page; in summary, ratings change when the underlying facts change, and the change is reflected in the “last updated” date on the published review. Triggers for an interim update include: a material change to bonus terms; a change of ownership or licence; a wave of credible complaints on independent platforms; the addition or removal of a payment method that materially changes the deposit or withdrawal score; the launch or removal of a responsible-gambling feature. Where a re-test produces a different rating, the new number replaces the old; the previous text is preserved in working notes and is available on request through the channels on the Contact page.

For the underlying testing process that produces the inputs into this rating framework, see the How We Test page. For the editorial framework that wraps the rating mechanics, including independence and error-correction commitments, see the Editorial Policy. For the commercial framework that applies to every page on this site, see the Affiliate Disclosure.