The free bet calculator helps you calculate the cash return from a free bet. Enter the free bet amount, decimal odds and type to see how much would be credited to your main account if the bet wins.
What is a free bet and how do you use it?
A free bet is a promotional bet provided by a bookmaker. If it wins, the winnings are credited to your account, but the free bet stake itself is usually excluded from the payout.
Bookmakers may offer free bets for registration, identity verification or participation in a promotion. Eligibility and qualifying requirements vary between offers.
Free bet rules depend on the bookmaker. Common restrictions include minimum decimal odds, an expiry date and a requirement to use the full amount on a single bet.
Registration free bets: how to compare the terms
Consider some illustrative offers. A free bet of 2,000 units might be awarded after registration and verification, with minimum odds of 1.50 and a seven-day expiry. Another offer might provide a 3,000-unit free bet after a first deposit of at least 500 units. A promotion code might offer a free bet of up to 7,000 units. These amounts alone do not show which offer is better: compare the qualifying conditions and restrictions.
If these free bets are stake not returned, only the winnings excluding the bonus stake are credited after a win. Offers can change, so check the specific terms when comparing bookmaker free bets.
Free bet types: stake returned and stake not returned
There are two free bet types, with different rules for the amount paid after a win:
Stake not returned (SNR). The free bet stake is excluded from the payout. A free bet of 1,000 units at decimal odds of 2.00 pays 1,000 units if it wins, rather than 2,000.
Stake returned (SR). The payout includes the free bet stake, subject to the offer's terms. With the same 1,000-unit free bet at odds of 2.00, the payout is 2,000 units.
For the same free bet amount and odds, the SNR cash return is lower than the SR return. Select the correct type to calculate the amount credited after a win. Whether that amount is immediately withdrawable depends on the bonus terms.
Free bet conversion is the cash return after a win expressed as a percentage of the free bet's face value. Here it is calculated as follows:
Free bet conversion: how much cash could you receive?
Conversion depends on the odds and free bet type. For an SNR free bet of 3,000 units, odds of 1.50 give 3,000 × 0.50 = 1,500 units after a win, or 50% conversion. At odds of 2.50, the return is 3,000 × 1.50 = 4,500 units, or 150%. At odds of 5.00, it is 3,000 × 4.00 = 12,000 units, or 400%.
Odds of 2.00–3.50 give SNR conversion of 100–250% if the bet wins. Below 2.00, the cash return is less than the free bet's face value. Above 4.00, the potential conversion is higher, while the odds imply a lower chance of winning. There is no universally optimal odds range: compare the conversion table with your assessment of the selection's probability and the bonus rules.
Ways to use a free bet
You do not pay the free bet stake from your own cash balance. However, qualifying deposits or cash bets can involve your own money, and the way you use the bonus affects the outcome.
Betting at high odds. Higher odds increase the potential conversion of an SNR free bet: 50% at odds of 1.50 versus 400% at 5.00. The higher payout is conditional on winning; higher odds imply a lower win probability.
Betting at intermediate odds (2.00–3.00). This range gives potential SNR conversion of 100–200%. It illustrates the trade-off between the amount paid after a win and the chance of receiving that payment, rather than proving that a particular selection is good value.
Using an accumulator (parlay). Some bookmakers allow a free bet on an accumulator. Its combined odds can increase the potential conversion, but every required selection must win for the accumulator to pay.
Check the bonus rules for minimum odds, expiry dates, eligible sports and any wagering requirements. These conditions are set by the individual bookmaker.
Free bet on an accumulator or a single: how do they compare?
If the offer allows an accumulator, compare a single at odds of 3.00 with two selections at 1.70 × 1.80 = 3.06. Their potential SNR conversion is close: 200% versus 206%. The reciprocal odds imply probabilities of about 33.3% and 32.7%, respectively. The individual accumulator odds imply about 59% and 56%; multiplying the unrounded figures gives 32.7%, assuming independent selections. These are probabilities implied by the quoted odds, not measured win rates, and they include the effect of the bookmaker's margin.
A single requires one selection to win; an accumulator fails if any required leg loses. That does not make every single more likely to win than every accumulator: compare the actual selections and their estimated probabilities. An accumulator can produce combined odds above 4.00, while a single at 2.50–3.50 offers potential SNR conversion of 150–250%. Neither range is automatically the best choice for a free bet.
Wagering requirements: calculating bonus turnover
A wagering requirement is a multiplier that determines how much must be bet before a bonus or its winnings can be withdrawn. If a 5,000-unit bonus has a ×5 requirement applied to the bonus amount, the required turnover is 5,000 × 5 = 25,000 units. You can check the calculation with the wagering requirements calculator. Some offers apply the multiplier to a different base, so check exactly what the terms specify.
Suppose a 10,000-unit bonus has a ×3 wagering requirement and minimum odds of 1.50. The required turnover is 10,000 × 3 = 30,000 units. At 1,000 units per bet, that means 30 qualifying bets, provided each counts fully toward the requirement and your balance can fund them. At odds of 1.80, a realized result of 17 wins and 13 losses gives cumulative payouts of 17 × 1,800 + 13 × 0 = 30,600 units. Subtracting the 30,000 units staked leaves a betting profit of 600 units; the realized win rate is 17 / 30 ≈ 56.7%. If the true win probability were 55%, the expected number of wins would instead be 16.5 and expected cumulative payouts would be 29,700 units, giving an expected betting loss of 300 units. These betting results are separate from the original credited bonus and do not guarantee that the requirement can be completed.
Bonus conditions to compare
Compare the wagering multiplier together with minimum odds, expiry and the amount to which the multiplier applies. The following are illustrative combinations of terms, rather than current offers:
- Registration bonus — ×3–×5 wagering on the bonus amount, minimum odds of 1.50.
- Bonus with a deadline — ×3 wagering, minimum odds of 1.50, 30 days to complete the requirement.
- Welcome bonus — ×5 wagering, minimum odds of 1.50.
- Bonus with lower minimum odds — ×5 wagering, minimum odds of 1.40, a 30-day deadline.
- Bonus with higher minimum odds — ×3 wagering, minimum odds of 1.70.
For comparison, a wagering requirement of ×20–×50 would require much more turnover on the same bonus base than ×3–×5. This calculation alone does not establish which offer is better: eligible bets and the other restrictions also matter.
Some free bets have no further wagering requirement on their winnings, while others do. Cash bonuses, such as deposit bonuses or rewards for a sequence of bets, can also have wagering requirements. Before activating a bonus, check when and how the winnings become withdrawable.
A free bet avoids paying that particular stake with your own money, but it does not remove the bookmaker's margin or the variability of outcomes. Even across 20 or more free bets in a season, the cash actually received depends on how often your selections win. An SNR free bet on a favorite at odds of 1.50 gives 50% conversion after a win; one on an underdog at 4.00 gives 300%, but the odds imply a lower chance of winning and the bonus is used up without a cash return if the bet loses. Track qualifying costs and bonus conditions alongside your bankroll management.
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