What Is a Casino Welcome Bonus?
A welcome bonus is a promotional offer given to new players when they register and make their first deposit at an online casino. These offers typically match a percentage of your deposit in bonus funds or award a set number of free spins — sometimes both. They're designed to give new players extra playtime to explore the casino.
While these bonuses can be genuinely valuable, they come with conditions that are critical to understand before you deposit.
Common Types of Welcome Bonuses
- Deposit match bonus — the casino matches your deposit by a percentage (e.g., 100% up to £100 means a £100 deposit gives you £100 bonus, so £200 to play with)
- Free spins — a fixed number of spins on specified slots with winnings credited as bonus funds
- No-deposit bonus — small bonus awarded just for registering, without requiring a deposit
- Cashback offer — a percentage of losses returned as bonus funds
Wagering Requirements: The Most Important Term
A wagering requirement (also called playthrough requirement) specifies how many times you must bet the bonus amount before any winnings can be withdrawn as real cash.
For example:
- You receive a £100 bonus with a 30x wagering requirement
- You must wager £100 × 30 = £3,000 in total bets before you can withdraw
- Some casinos apply the requirement to bonus + deposit combined, making it even higher
Wagering requirements typically range from 20x to 50x. Anything above 40x should be approached with significant caution.
Game Contribution Rates
Not all games contribute equally towards clearing a wagering requirement. Typical contribution rates:
| Game Type | Typical Contribution |
|---|---|
| Slots | 100% |
| Live Casino | 10–20% |
| Blackjack / Roulette | 10% or excluded |
| Video Poker | 10–20% |
| Scratch Cards | Varies (often 0%) |
Slots almost always contribute 100%, which is one reason welcome bonuses are heavily tied to slot play.
Other Terms to Watch For
- Maximum bet rule — most bonuses restrict bets to a maximum (often £5 per spin) while wagering. Exceeding this can void your bonus and winnings.
- Time limit — bonuses typically expire within 7–30 days if not wagered through
- Max withdrawal cap — free spins bonuses often cap winnings at a fixed amount (e.g., £50 max withdrawal)
- Eligible games — not all slots may count; always check which games qualify
How to Evaluate Whether a Bonus Is Worth Taking
- Calculate total wagering required (bonus amount × wagering requirement)
- Check if that amount is realistic given the bonus size and expiry window
- Confirm maximum bet restrictions won't disrupt your normal play style
- Look for any maximum withdrawal caps on free spins winnings
- Check game contribution rates for your preferred slots
A Note on Free Spins Offers
Free spins can be great value — but always check the spin value. A "200 free spins" offer where each spin is worth £0.01 is worth only £2 in total. Compare the actual cash value, not just the headline number.
The best bonuses are those with low wagering requirements (under 30x), reasonable time limits, and no punishing bet restrictions. Read the full terms — every time.