“100 free spins” tells you almost nothing. Six other numbers decide whether the offer is worth taking, and they are all in the terms rather than the headline.
1. Spin value
The stake each spin is worth. 100 spins at 10p is £10 of play; 100 at 50p is £50. This is the single biggest variable and it is almost never in the headline. Offers advertising a large spin count with an unstated value are usually 10p spins.
2. Wagering requirement on the winnings
Most free spins produce bonus funds, not cash. If you win £20 from spins with a 40x requirement, you must stake £800 before withdrawing anything. Genuine no-wagering free spins — where winnings are paid as cash — are far more valuable than a larger number of wagered spins, and worth actively looking for.
3. Maximum win or conversion cap
Many offers cap what free spin winnings can convert to — commonly £50 or £100 regardless of what you actually win. A £500 win on capped spins becomes £100. Always find this number.
4. Game restriction
Spins are usually locked to one title chosen by the operator, and it is chosen for a reason. Check the RTP of that specific game in its info panel; a low-RTP game reduces the offer’s real value before you start. See RTP explained.
5. Expiry
Two separate clocks, and people miss the second one: the spins themselves expire (often 24 hours to 7 days), and any winnings then have their own wagering deadline. Missing either forfeits the balance.
6. Maximum bet while wagering
Usually £5 or less. Exceed it once — even accidentally — and most operators void the bonus and the winnings entirely. This is the most common way people lose an otherwise cleared bonus.
Working out what an offer is actually worth
A rough method: spins × spin value × game RTP gives you the expected return in bonus funds. Then apply the wagering requirement, which erodes most of it, then the conversion cap, which limits the upside.
Worked example: 50 spins at 20p on a 96% game returns about £9.60 in bonus funds on average. At 35x wagering that is £336 of turnover required, during which the house edge applies again. The realistic cash value is a small fraction of the headline — which is the point of the structure.
The offers actually worth taking
- No-wagering spins. Winnings are cash. Rarer, smaller, genuinely worth more.
- Low wagering — 10x or under on winnings only.
- No conversion cap, or a high one.
- Spins on a high-RTP game rather than an operator’s own low-RTP title.
The ones to skip
- Requirements above 40x on winnings.
- A conversion cap under £50 paired with a large spin count.
- 24-hour expiry on both spins and wagering.
- Any offer whose full terms you cannot find before opting in.
If the terms are hard to find, that is itself the answer. A good offer is stated plainly because it survives being read.
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18+ only. Gambling can be addictive — please play responsibly. Free, confidential support is available from BeGambleAware and GamCare on 0808 8020 133. UK players can self-exclude from all licensed online operators through GAMSTOP. This article is editorial information, not advice, and nothing here improves your odds.
