MelBet pairs its 2026 Major League Baseball coverage with a weekly bonus built on a genuinely different mechanic from most of its other sports promotions — instead of a flat percentage of stake, the bonus is calculated per bet from a formula involving both the stake and the odds, which means two bettors risking the same amount of money can end up with very different bonus totals depending purely on the odds they chose.
The Formula: Bonus = Stake − (Stake ÷ Odds)
Every qualifying bet generates its own individual bonus amount, calculated as the stake minus the stake divided by the odds. MelBet's own published example shows a 10 USD bet at odds of 1.5 generating a bonus of 3.4 USD (10 minus 10 divided by 1.5), and a second bet of 5 USD at odds of 2 generating 2.5 USD (5 minus 5 divided by 2) — the two figures then simply add together for that week's total.
What makes this notable is that nothing in the formula depends on whether the bet actually won or lost. The calculation only uses the stake placed and the odds taken, which means — based on how MelBet describes and calculates it — the bonus applies the same way to a settled losing bet as to a settled winning one, unlike most of MelBet's other cashback-style offers that only pay out on losses or scale with total winnings.
Why Longer Odds Pay a Proportionally Bigger Bonus
The stake-divided-by-odds portion of the formula shrinks as odds rise, which means the bonus — the leftover portion of the stake — grows as a share of that stake the higher the odds go. At odds of 1.5, the formula returns roughly a third of the stake as bonus. At odds of 3.0, a 20 USD bet generates a bonus of about 13.33 USD (20 minus 20 divided by 3) — around two-thirds of the stake, double the proportional bonus of the 1.5-odds example despite an identical mechanic. Push the odds higher still, to something like 5.0, and an equivalent 20 USD bet returns roughly 16 USD in bonus — 80% of the stake back as bonus value.
This structure quietly rewards bettors willing to back less heavily favored outcomes over safer, shorter-priced ones, since the same money staked at longer odds produces a materially larger weekly bonus contribution, independent of whether that longer-odds bet actually comes in.
Building Up a Full Week's Total
The weekly bonus is simply the sum of every individual qualifying bet's calculated amount, added together across all bets settled that week. Extending MelBet's own two-bet example with a third bet illustrates how quickly this compounds: alongside the 3.4 USD (from the 10 USD bet at 1.5) and 2.5 USD (from the 5 USD bet at 2) already totalling 5.9 USD, a third bet of 15 USD at odds of 2.5 would add a further 6 USD (15 minus 15 divided by 2.5) to the running total, bringing the week's combined bonus to 11.9 USD from three bets alone.
Which Bets Qualify, and the Weekly Window
A qualifying bet needs a stake of at least 2 USD and has to involve a 2026 MLB match. Single bets need odds of 1.5 or higher; accumulators need 3 or more selections at 1.4 or higher each, with at least one selection tied to an MLB 2026 match — the remaining legs can come from other sports or events. The promotional week runs Monday 00:00 to Sunday 23:59 (UTC+3), and bets settled at odds below 1.00 don't qualify, along with cancelled, sold, and refunded bets, Advancebets, bets from a bonus account, and bets placed using a promo code.
The Floor, the Cap, and When It Lands
A week's combined bonus needs to reach at least 1 USD to be credited at all — smaller totals aren't paid out. On the upper end, the weekly bonus is capped at 300 USD regardless of how much larger the calculated total works out to, a considerably higher ceiling than most of MelBet's other weekly cashback offers, reflecting both the wider potential range of the odds-based formula and MLB's long, near-daily 2026 schedule. Bonuses are credited automatically every Tuesday, based on the previous week's settled bets.
Wagering the Bonus
Clearing the bonus requires wagering it 5 times over through accumulator bets, each containing 4 or more selections, with at least 4 of those selections priced at 1.4 or higher — the same structure MelBet uses on several of its other weekly sports cashback offers. The bonus and any resulting winnings have to be wagered within 72 hours of being issued, after which anything unused expires. Any bonus balance left over once wagering is complete rolls into the main balance up to the original bonus amount, while a remainder smaller than the minimum stake is written off as lost.
Restrictions Worth Knowing
Beyond the usual profile-completion, opt-in, and "Take part" requirements, this offer carries one restriction that's easy to overlook: if a customer already has another MelBet bonus sitting in their bonus account and still being wagered when this week's MLB bonus would otherwise be credited, the MLB bonus simply isn't awarded that week — it doesn't queue up or get delayed until the earlier bonus clears, it's skipped entirely for that cycle. The offer also can't be combined with any other active promotion more generally, and is limited to one bonus per account, family, IP address, household, and device across the full 26 March – 28 September 2026 validity period.