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How we rate a bonus
Every promotion on this site carries a number out of ten. It is nobody’s opinion of the operator and it is not paid for. It is arithmetic over the terms the operator publishes, and this page is the whole of it — weights included, so you can redo the sum yourself.
The rule in one sentence
A bonus starts at 5.0 and moves up or down according to the conditions attached to it: how much you must wager, how much you must pay in, how big the reward is, how long you have to use it and what caps the operator puts on winnings.
What moves the number
| Condition | Strongest effect | How it is counted |
|---|---|---|
| Wagering requirement | +2.4 | none +2.4 · 1× or less +1.9 · up to 10× +1.1 · up to 25× +0.2 · above 25× −0.9 |
| What it costs to enter | +2.0 | no deposit +2.0 · £5 or less +1.5 · up to £10 +1.1 · up to £20 +0.6 · above £20 0 |
| Size of the reward, in money | +2.2 | the reward’s value in pounds, on a sliding scale: every doubling adds about +0.4, from £5 up to the cap at +2.2. Where the operator does not price it — free spins with no stated spin value — we fall back to counting them: 100+ spins +1.2, 50+ +0.9, 20+ +0.5 |
| Value for money | +0.5 | reward worth 10× the deposit +0.5 · 5× +0.35 · 2× +0.2 · smaller than the deposit −0.3 |
| Deposit match of 100% or more | +0.5 | stated match percentage |
| Time to use it | +0.5 | 30 days or more +0.5 · 14 days +0.3 · 7 days +0.1 · 3–6 days −0.3 · 2 days −0.5 · within a day −0.7 |
| Cap on winnings | +0.4 | stated as uncapped +0.4 · cap below the reward’s own value −0.9 · cap under 3× the reward −0.5 · cap of £50 or less −0.4 |
| Friction | −0.3 | promo code needed −0.2 · opt-in needed −0.1 |
| Excluded deposit methods | −0.3 | any method the terms rule out |
The result is clamped to the 1–10 range and rounded to one decimal place.
How the parts become a number
The parts above are added up. The total is then stretched onto the ten-point scale between the worst and the best set of conditions an offer could state — -2.6 at one end, 7.6 at the other. Nothing is trimmed at the top, which matters: the earlier version capped the total at ten, so every offer with no wagering and a £10 entry scored exactly 10.0 and first place meant nothing. Now the size of the reward, the cap on winnings and the time you get to use it decide between them.
Two things the scale deliberately refuses. A prize draw or a wheel is not scored on its top prize: £25,000 is what one person might win, not what the offer gives you, so those types get no reward-size points at all. And where an operator does not state a figure, the part is worth zero — silence is neither rewarded nor punished, or we would be rating the completeness of someone else’s page rather than the offer.
What does not move it
- Commission. Whether an operator pays us has no place in the sum. The weights above are the only inputs, and they come from the operator’s own page.
- Silence. Where the terms do not state a value, that line scores zero — neither reward nor penalty. Otherwise we would be rating how talkative an operator is, not the offer.
- Brand. A large operator gets nothing for being large.
- Anyone’s taste. Numbers are never adjusted by hand. If a rating looks wrong, the terms behind it are shown on the promotion’s own page — check them and tell us.
A worked example
Right now the highest-rated promotion on the site is WELCOME OFFER CLAIM YOUR £60 BINGO BONUS at Betfair, on 8.3 out of ten. It gets there like this:
| Line | Points | Because |
|---|---|---|
| Starting point | 5.0 | every offer starts here |
| Wagering | +1.9 | wagering is only 1× |
| Entry cost | +1.1 | minimum deposit £10 |
| Reward size | +2.0 | the reward is worth £60 by the operator’s own figures |
| Value for money | +0.3 | the reward is 6.0× the deposit |
| Time to use | +0.5 | 30 days to use the reward |
| Friction | -0.2 | a promo code is required: BINW50 |
| Total | 8.3 | rounded to one decimal place |
Check it yourself: the terms behind every line are quoted on the promotion’s own page.
Why a number at all
Because 1385 promotions cannot be read end to end. The number is a way to sort them, not a verdict: two offers a point apart are close, and the terms decide. Where a comparison makes sense we show it — the same kind of offer, the same section, other operators, side by side.
Who decides this
The formula above, and nothing else. It is published by the UK Bonus editorial desk, it has been the same since the site opened, and any change to it is a change to this page — which is the point of printing the weights rather than describing them. Last data check: 30 September 2026.
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