Tool / 01
Bonus ROI Calculator
Find the best welcome bonus for your style. Transparent math, no hidden bias.
Your Scenario
£50
£30
5×
Total to bet: £400
30
2.0
Higher odds = fewer qualifying bets
Bet Type
Your ROI Estimate
Wagering Req.
£400
Success Prob.
25%
Effective ROI
15.0%
Estimate based on average success rates. Bet only what you can afford to lose.
Best Bonuses for You
Ranked by ROI · accumulators · 30+ days
OperatorBonusReq.ROIAction
DK
DraftKings
200 Bonus Bets
1×
120%
120%
FD
FanDuel
150 Bonus Bets
1×
110%
110%
MG
BetMGM
100 Bonus Bets
1.5×
98%
98%
B3
Bet365
30 Free Bets
1×
95%
95%
WH
William Hill
30 Free Bet
2×
88%
88%
BV
BetVictor
30 Bonus
3×
85%
85%
BF
Betfred
50 Free Bets
5×
72%
72%
BW
Betway
20 Free Bet
8×
45%
45%
Transparency: We earn a small commission per signup. Rankings are based on your ROI, not our commission.