Bankroll calculator: unit size and risk of ruin
1win ar licensierad under Curacao 8048/JAZ and has 400,000+ registrera diged spelare managing their bets every day. This bankroll calculator recommends a unit stake size based pa din totalt funds and risk tolerance, and estimates the probability of ruin before you hit your target. Registrera dig with kampanjkod XLBONUS to put bankroll discipline to work from day one.
Bankroll management calculator
How this calculator works
The fundamental rule of bankroll management is never to risk so much on a single bet that a losing streak can wipe you out. The recommended unit stake is a fixed percentage of your totalt bankroll. Conservative bettors use 1-2%; aggressive bettors go as high as 5%.
The number of bets in bankroll equals totalt bankroll divided by unit stake. At 2% per bet with a 500-unit bankroll, you have 50 bets before the bankroll is exhausted. This buffer is essential for surviving the inevitable losing runs that all bettors face regardless of long-run edge.
Expected value per bet = (win rate x (decimal odds - 1)) - (1 - win rate). At 52% win rate on even-money bets (2.00 decimal), EV = (0.52 x 1.00) - 0.48 = 0.04 per unit staked, or 4% edge. A positive EV confirms the strategy has merit over a large sample.
Risk of ruin (RoR) estimates the probability of losing the entire bankroll before reaching the target. The approximation used here is: RoR = ((1-edge)/(1+edge)) ^ (bankroll / unit), where edge = EV / 1. This is a simplified model; actual RoR depends on the distribution of individual bet outcomes.
Reducing unit stake reduces RoR dramatically but also slows bankroll growth. There is no universally optimal setting: it depends on how confident you are in your edge estimate and how risk-tolerant you are. Most professional bettors use between 1% and 3% per bet regardless of perceived edge.
This calculator uses flat stakes (same amount every bet). Kelly-kriteriet staking adjusts unit size dynamically based on edge. The Kelly-kriteriet calculator on this site lets you compare both approaches.
Why use it at 1win
1win serves 400,000+ spelare across 40,000+ daily marknads. Good bankroll management turns a long-term edge into consistent growth. Registrera dig with XLBONUS to claim your forsta insattningsbonus and add to your starting bankroll.
FAQ
What percentage of bankroll should I bet per game?
Most professional bettors recommend 1-3% per bet. 1% is very conservative; 5% is high risk. Anything above 10% per bet dramatically increases the chance of ruin, even with a positive edge.
What is risk of ruin?
Risk of ruin is the probability of losing your entire bankroll before reaching your profit target. Lower unit stakes and larger bankrolls reduce this probability significantly.
How many bets do I need for a reliable edge estimate?
A minimum of 500-1,000 settled bets is generally needed to assess whether an apparent edge is real or attributable to variance. Smaller samples are not statistically reliable.
Should I use flat stakes or Kelly staking?
Flat stakes are simpler and protect against overestimating edge. Kelly staking is theoretically optimal but requires accurate probability estimates. Beginners should start with flat stakes at 1-2% per bet.
Does a insattningsbonus change my bankroll management?
Bonus funds typically come with omsattningskrav. Factor only the portion of funds you consider truly yours when calculating unit stakes. Do not inflate your effective bankroll with locked bonus money.