Betting calculators
Free betting calculators help you make informed decisions: calculate your real payout after tax (legal bookmakers in Poland pay 12% of the stake), the combined odds of an AKO accumulator coupon, and check whether you have found a so-called surebet. All tools work instantly in your browser — there is nothing to install. Updated: September 2026.
For how much of your bankroll to risk on a single bet, see our bankroll management guide.
12% tax calculator
In Poland, legal bookmakers licensed by the Ministry of Finance are subject to a 12% tax charged on the stake (turnover). Enter the stake and the odds to see your real net winnings.
Kalkulator podatku 12%
Legalni bukmacherzy w Polsce odprowadzają 12% podatku od stawki. Sprawdź, ile realnie wynosi Twoja wygrana netto.
- Podatek (12% stawki)
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- Kwota grana po podatku
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- Wygrana brutto
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- Zysk netto
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Obliczenia orientacyjne. Część operatorów stosuje „bonus bez podatku” / zwrot 12% — sprawdź ofertę u bukmachera. 18+. Graj odpowiedzialnie.
AKO calculator (accumulator coupon)
An AKO (accumulated) coupon multiplies the odds of all events. Add more odds and the calculator will compute the combined odds and the winnings, including tax. As you add legs, the bookmaker’s margin compounds across each one too — see how in our guide to accumulator (AKO) margin.
Kalkulator AKO (kupon wielokrotny)
Dodaj kursy poszczególnych zdarzeń — policzymy łączny kurs i wygranę z uwzględnieniem podatku 12%.
- Łączny kurs
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- Wygrana brutto (po podatku)
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- Zysk netto
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Uwzględnia 12% podatku od stawki. Wpisuj kursy > 1.00. 18+. Graj odpowiedzialnie.
Surebet calculator (arbitrage)
A surebet is a situation in which betting on all outcomes at different bookmakers theoretically limits the risk of a loss across all outcomes. Enter two opposing odds and your budget to see the result of that calculation and how to split your stake. This works only when the combined implied probability of the two odds falls below 100% — see our guide to implied probability in betting for how that calculation works.
Kalkulator surebet (arbitraż)
Wpisz dwa przeciwstawne kursy (np. zwycięstwo / brak zwycięstwa) u różnych bukmacherów i sprawdź wynik takiej kalkulacji oraz jak podzielić stawkę.
- Suma prawdopodobieństw
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- Stawka na wynik 1
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- Stawka na wynik 2
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- Teoretyczna różnica względem budżetu
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Wpisz oba kursy.
Nie uwzględnia podatku ani limitów zakładów — to narzędzie edukacyjne. Surebety między legalnymi operatorami są rzadkie. 18+. Graj odpowiedzialnie.
How to read the calculator results?
Remember that the 12% tax lowers the effective odds — that is why it is worth choosing operators with high odds or a „tax refund” promotion. More in our guides: how to read odds, tax on winnings, and bankroll management.
Do I have to pay tax on winnings at a legal bookmaker?
Not yourself — legal bookmakers pay the 12% tax on the stake on the player’s behalf. Your winnings are paid out without any additional deductions on your side. The calculator shows how this tax affects your real profit.
How are AKO coupon winnings calculated?
The odds of all events are multiplied together, and the result is multiplied by the stake after the tax has been deducted. The more events, the higher the potential odds, but also the greater the risk — a single missed event is enough to lose the entire coupon.
Is a surebet legal in Poland?
Yes, betting with legal bookmakers is fully legal. However, surebets between licensed operators occur rarely, and bookmakers may limit betting stakes. Treat the calculator as an educational tool.
Gambling can be addictive. 18+. Play responsibly. Help: Helpline 116 123.