Casumo Review: What Its Prices Cost You Per £100 Staked
This is a price measurement, not a product review. Casumo was measured on the same basket as every other book in the August 2026 study — 58 of its match-result markets priced in the capture window — and came out 6th of 18 in the ranking — 7.90% margin, £7.33 per £100 staked. Nothing about its app, its offers or its service is measured here.
Commercial relationship. Casumo is a commercial partner and the link below is a paid one. Its place in the ranking is set by the measurement and was not adjusted for that.
What Casumo charged in the August 2026 sample
- Margin
- 7.90%
- Cost per £100
- £7.33
- Rank
- 6 of 18
- Markets sampled
- 58
The margin is the overround: add up the implied probability of every outcome in a market and a fair book totals 100%. Casumo totalled 107.90% on average, and that surplus is the charge. Expressed against your stake rather than against the fair book it comes to £7.33 per £100 — the two figures measure the same thing from different ends, which is why both are printed rather than one.
In this window the keenest book measured £5.67 per £100 and the dearest £10.58. Casumo sat £1.66 above the keenest end and £3.25 below the dearest. Its immediate neighbours were Unibet just keener, and Grosvenor, level on price.
Casumo odds by competition
The same operator, the same window, 5 different answers — 5.80 points between Casumo’s own best and worst. A margin is not one number an operator sets; it is set market by market.
| Competition | Margin | Cost per £100 | Against its own average |
|---|---|---|---|
| Premier League | 5.10% | £4.85 | -2.80 |
| ATP Canadian Open | 5.49% | £5.20 | -2.41 |
| Championship | 7.14% | £6.66 | -0.76 |
| League Two | 10.89% | £9.82 | +2.99 |
| League One | 10.90% | £9.83 | +3.00 |
Every figure in that table is also Grosvenor’s, to the penny: the two published the same prices in all 58 markets, so one per-competition table serves both brands. Read across it and the span inside Casumo is 5.80 points, from 5.10% on Premier League to 10.90% on League One — and holding an account at both brands does nothing to narrow it.
It also produced the single keenest competition figure anywhere in this window: 5.10% on Premier League. No other book priced any competition as keenly, which sits oddly beside its overall placing and is exactly why the per-competition table is published.
What a 7.90% margin costs over a year
Casumo charges 7.90% on turnover, not on deposits. Stake the same pound twice and it is charged twice, which is what turns a small percentage into a yearly figure.
| Staked in a year | Cost at 7.90% | At the keenest measured | Difference |
|---|---|---|---|
| £1,000 | £73 | £57 | £16 |
| £5,000 | £367 | £284 | £83 |
| £20,000 | £1,466 | £1,134 | £332 |
These are arithmetic on the measured margin, not a prediction about anyone’s results. What happens to individual bets is a separate matter entirely; the margin is the part that is known in advance and charged whatever happens.
The third column is the same turnover at the keenest margin in this window, Betfred. At £5,000 staked the gap is £83 a year — worth setting against whatever the sign-up offer is worth, because one is charged every year and the other arrives once.
Casumo and Grosvenor published identical prices
Across the 58 markets both brands priced in this window, Casumo and Grosvenor published the same set of prices 58 times. Not a similar average — the same numbers, market after market.
That only means something next to what ordinary pairs do. Of the 153 pairs of books compared in this sample, the median pair agreed on 1.8% of the markets they both priced. The closest pair that did not match everywhere was William Hill and 888sport, at 44 of 57. Two books running separate trading desks disagree constantly, even when their averages land within a hundredth of each other.
The reading is a shared pricing platform. That is an inference drawn from the prices, not something the Gambling Commission’s register records, and it is set out here as such. The two are separate licence holders on the register, so whatever they share is not the licence.
For a bettor the practical consequence is short: holding accounts at both brands adds no choice of price in these markets. It is the same book twice.
Who holds the Casumo licence
| Licensed entity | Recro Limited |
|---|---|
| Account number | 61549 |
| Licence number | 061549-R-336718-002 |
| Held since | April 2023 |
| Domain registration | casumo.com · Active |
Casumo is a brand, not a licensee. The Commission licenses Recro Limited under account 61549 for remote betting on real events, and every price measured on this page was published under that licence. The account has held it since April 2023.
Nothing else is registered against that account: casumo.com is the only active domain on the licence. In a market where one licensee often carries a dozen brands, that is worth noting rather than assuming.
Casumo on the Gambling Commission’s register
The Commission’s register of regulatory actions currently lists nothing against Recro Limited. That is what the register shows on the date we checked it, 7 August 2026, and not a judgement about the operator: matters age off the register over time, and an absence today is not a guarantee about the past.
Where an operator in this study does carry an action, it is printed on its own page with the date and the published outcome, whether or not we earn from it.
Where Casumo sits in the study
6 of 18 puts Casumo in the keenest third of the table. That is one capture window, one market type and 5 competitions, so it is a finding about this sample rather than a verdict on the operator. A different basket would produce a different order, and saying so is not a hedge — it is what the method page commits us to.
The full table, exchanges included, is on the register; how the figure is calculated is on the method page.
Visit Casumo (opens in a new tab) 18+ · commercial link · terms apply at the operator
Questions about Casumo
What margin did Casumo charge?
7.90% across the 58 match-result markets we sampled on 7 August 2026, which works out at £7.33 per £100 staked. That is one capture window on one market type and is not a statement about its prices today.
Is Casumo cheap or expensive compared to other bookmakers?
It ranked 6 of 18 bookmakers in this sample, keenest first. The keenest measured £5.67 per £100 and the dearest £10.58, so Casumo sat £1.66 above the keenest end and £3.25 below the dearest.
Is Casumo licensed in Great Britain?
Yes. The Gambling Commission licenses Recro Limited under account 61549, licence 061549-R-336718-002, held since April 2023 and active when we checked the public register. Casumo is a brand operated under that licence, not a licensee in its own right.
Who actually operates Casumo?
Recro Limited. The Commission lists no other active domain against that account, none of them measured in this study.
Does Casumo have a regulatory record?
Nothing is currently listed against Recro Limited on the Commission’s register of regulatory actions. That is a statement about what the register shows today, not a clean bill of health for all time — matters age off the register over time.
Does the margin apply to every market at Casumo?
No. These are match-result markets across 5 competitions. Within that sample its keenest competition was Premier League at 5.10% and its dearest was League One at 10.90%, a span of 5.80 points. Other market types are not measured here at all.
What does a 7.90% margin cost over a year?
At £5,000 staked across a year, roughly £367. The margin is charged on turnover, not on deposits, so it recurs on every bet rather than once — which is why it can outweigh a welcome offer several times over.
Do you earn money if I use Casumo?
Yes. Casumo is a commercial partner and the link on this page is a paid one. Its position in the ranking is set by the measurement and is not adjusted for that, which is why partners appear across the table rather than at the top of it.
Why are Casumo and Grosvenor prices the same?
Across the 58 markets both priced in this window, the two published an identical set of prices 58 times. Two books running separate trading operations do not do that: the typical pair in this sample agreed on 1.8% of markets. The obvious reading is a shared pricing platform, which is an inference from the prices rather than something the Commission’s register records.
Can I check these figures myself?
Yes, and that is the intention. The formula, the basket, the exclusion rules and the test vectors are published on the method page, and the odds calculator runs the same arithmetic on any prices you enter. The figures here are ours and can be wrong; where a check shows they are, they change.