Minimum
Roughly half a day of turnover. Tight and more exposed to settlement delays.
Edge mathematics
A small edge can matter through turnover
Adjust the scenario and see the relationship between win rate, odds, volume and expected value.
Break-even53.19%
Theoretical ROI+3.40%
Turnover7,000 USD
Expected value+238 USD
Bets70
Theoretical ROI+3.40%
Turnover7,000 USD
Expected value+238 USD
Odds sensitivity at 55% WR1.80 → -1.00%1.85 → +1.75%1.88 → +3.40%1.90 → +4.50%
Mathematical scenario, not a forecast. Betty's realized ROI comes exclusively from settled stake and return — never from WR × average odds.
Required balance
How much money should be in the account?
You need more than one stake. You need enough liquidity for daily turnover.
Comfort
One day of turnover in the account.
Safety
Two or more days of turnover for a larger buffer.
Clear
What to remember
The calculator stays simple and keeps only the essential explanations.
2% is not small
At higher turnover, a small percentage becomes meaningful money.
Betty looks for the percentage
The goal is to move filtered selections into positive territory.
Discipline matters
One bet can lose. A system is measured across many decisions.
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GuidesLearn break-even, ROI, variance and bankroll.→
PricingCompare durations and the actual daily cost.→