Weekly cashback offers usually pay a flat share of everything you staked. 1xBet's 1xTennis Challenge works on a stricter basis than the headline "up to 18%" figure suggests — the percentage tier is set by how many qualifying tennis bets you place in a week, but the amount actually paid out is calculated from your net loss for that week, not your total turnover. Understanding that distinction, along with the specific tournaments and bet types that count, makes the difference between expecting a cashback figure and actually receiving one.
Which Bets and Tournaments Qualify
The offer covers a wide slice of professional and lower-tier tennis: ATP, WTA, Davis Cup, Billie Jean King Cup, United Cup, Laver Cup, Challenger, ITF, and UTR matches all count equally — a Challenger or ITF-level match earns exactly the same eligibility as a marquee ATP fixture, which is a meaningfully broader net than tennis promotions that restrict themselves to the main tours only.
Two bet structures qualify, each with its own odds floor:
- Single bets of at least 3 USD at odds of 1.5 or higher on a qualifying tennis match.
- Express (accumulator) bets of at least 3 USD with 2 or more selections, each at odds of 1.4 or higher, where at least one selection is on a qualifying tennis match.
Only real-money bets settled as winning or losing count. Handicap and total bets are excluded entirely, along with bets placed using a bonus account or promo code, canceled or sold bets, Advancebets, and refunded bets — a customer building express bets heavily around tennis totals markets would find none of that action counts toward the offer, even at qualifying stakes and odds.
How Many Bets You Need Each Week
The cashback percentage is set by the total number of qualifying bets placed during the Monday-to-Sunday week, across three tiers:
| Qualifying Bets Placed | Cashback Tier |
|---|---|
| 10 – 15 | 8% |
| 16 – 25 | 10% |
| 26 or more | 18% |
Fewer than 10 qualifying bets in a week earns no cashback tier at all, regardless of how large those bets were — this is a volume threshold, not a stake threshold, so a single 500 USD bet does nothing for eligibility if it's the only bet placed that week.
How the Cashback Is Actually Calculated
This is the detail that changes the real value of the offer. Rather than applying the tier percentage to total stakes, the terms define the cashback amount as the difference between total stakes and total payouts across all settled bets for the week — in other words, your net loss — multiplied by 8%, 10%, or 18% depending on which volume tier you reached. That means two customers who bet the same total amount and reach the same tier can receive very different cashback figures, or none at all, depending on how their bets actually settled.
Worked example, Tier 1 (8%). A customer places 12 qualifying tennis bets in a week totaling 180 USD in stakes, with 140 USD returned across the winning and losing bets combined. The net loss is 40 USD (180 − 140), and the cashback is 8% of that: 3.20 USD.
Worked example, Tier 2 (10%). A customer places 20 qualifying bets totaling 400 USD in stakes, with 300 USD in payouts. The net loss is 100 USD, and the cashback is 10% of that: 10 USD.
Worked example, Tier 3 (18%). A customer places 30 qualifying bets totaling 900 USD in stakes, with 700 USD in payouts. The net loss is 200 USD, and the cashback is 18% of that: 36 USD — a meaningful amount, but far below the 162 USD a naive "18% of total stake" reading of the promotional headline would suggest.
The scenario the headline doesn't mention. A customer who places 26 qualifying bets — enough for the top 18% tier — but ends the week with 950 USD in payouts against 900 USD in stakes has a net loss of zero or less. Because the cashback formula is based entirely on net loss, that customer receives no cashback whatsoever for the week, despite clearing the highest bet-count tier. Reaching the 18% tier guarantees the rate that would apply to a loss, not a guaranteed payout on its own.
The offer does cap and floor the result: the maximum free bet is 100 USD regardless of how large the calculated figure is, and if the calculated amount comes out below 1 USD, no bonus is awarded at all. Working backward from the cap, a net loss of about 555.56 USD at the 18% tier already produces the full 100 USD maximum — any additional net loss beyond that point stops increasing the payout.
The Weekly Cycle and Credit Timing
The qualifying week runs Monday 00:00 +3 UTC through Sunday 23:59 +3 UTC, and participants who bet within that window in line with the offer's terms are guaranteed a cashback calculation for it — though, as shown above, "guaranteed a calculation" doesn't mean "guaranteed a payable amount" if the net-loss base comes out at zero. The resulting free bet is credited the following Tuesday, sometime between 00:00 and 23:59 +3 UTC. The promotion itself runs from 28 January 2026 (11:00 +3 UTC) through 30 November 2026 (23:59 +3 UTC), so it covers roughly ten months of Monday-to-Sunday cycles.
Wagering the Free Bet
Once credited, the free bet has to be wagered within 7 days, on a pre-match or live accumulator with at least 3 selections, each at odds of 1.50 or higher — a looser structure than the 3-of-4-minimum-odds nuance seen in some other 1xBet promotions, since here every selection in the accumulator needs to individually clear 1.50, with no exceptions for a lower-odds leg. A 36 USD free bet (from the Tier 3 example above) staked across three selections at 1.55, 1.60, and 1.65 carries combined odds of roughly 4.10, returning close to 147.60 USD if all three legs win within the 7-day window.
Eligibility and Fair-Use Rules
Participants need a complete profile — full name, an activated mobile number, email address, and country of residence — and must opt in to bonus offers in Account Settings before pressing "Take part" on the offer page. The offer allows only one bonus per account, family, IP address, household, and PC. 1xBet reserves the right to review transaction records for patterns it considers abusive and reclaim the bonus if it finds them, to request KYC documents or photographic/video identity verification at any time, and to amend, suspend, or cancel the offer at any time without prior notice.