Bankroll management is what separates bettors who are still around in five years from those who are not. You can find real edges and still go broke by betting too much, too unevenly or at the wrong moments. Here is a complete, practical system.
Step 1: Define your bankroll
Your bankroll is money set aside only for betting, that you can afford to lose entirely without affecting bills, savings or your life. It is not your checking account. It does not get topped up after a bad week.
If you hold accounts at several books, your bankroll is the total across all of them. (How many sportsbooks?.)
Step 2: Choose a unit size
A unit is your standard bet. Most disciplined bettors use 1% to 2% of bankroll per unit.
| Bankroll | 1% unit | 2% unit |
|---|---|---|
| $500 | $5 | $10 |
| $2,000 | $20 | $40 |
| $10,000 | $100 | $200 |
Why so small? Because even a real edge produces long losing streaks. At 1% per bet, a 30-unit downswing (normal over a few thousand bets) costs 30% of your bankroll. At 5% per bet, it ends you. (Variance and downswings · What is a unit? · Unit size calculator.)
Step 3: Pick a staking method
Flat staking
Every bet is 1 unit. Simple, emotion-proof, ideal while you are learning. (Flat vs percentage betting.)
Percentage staking
Every bet is a fixed percentage of your current bankroll. Stakes grow as you win and shrink as you lose, which protects you in downswings.
Kelly staking
Bet size depends on edge and odds. Bigger edges get bigger bets. Full Kelly is too aggressive for real-world uncertainty; most use quarter Kelly with a cap (for example, never more than 2% of bankroll). (Kelly criterion · Fractional Kelly.)
Step 4: Adjust for odds
A 1-unit bet on a +400 underdog is far more volatile than 1 unit at −110. Some bettors size by risk to win for favorites and risk for underdogs, or simply scale down on long odds. Kelly does this automatically.
Step 5: Cap your exposure
- Per game: no more than 3–5% of bankroll across all bets on one game, especially correlated props.
- Per day: decide a maximum total risk.
- Parlays and longshots: a small fixed slice, if any.
Step 6: Rebalance on a schedule
Recalculate your unit monthly (or every 100 bets), not after every result. If your bankroll grew 20%, your unit grows 20%. If it shrank, your unit shrinks. Never raise stakes to "win it back". (Tilt and chasing losses.)
Step 7: Track every bet
You cannot manage what you do not measure: stake, odds, result, CLV and running bankroll. Automatic bet sync removes the chore and the temptation to skip losing bets. (How to track sports bets.)
Example plan
- Bankroll: $3,000
- Unit: 1% = $30
- Method: quarter Kelly, capped at 2 units ($60)
- Max per game: $150
- Rebalance: first day of each month
- Stop rule: if bankroll drops 25%, pause, review CLV and process before continuing
Frequently asked questions
How much of my bankroll should I bet per game?
Most disciplined bettors risk 1–2% of their bankroll per bet, and less on long odds.
What is a good starting bankroll for sports betting?
Any amount you can afford to lose completely. The size matters less than staking it consistently in small units.
Should I increase my bet size after winning?
Only on a schedule, in proportion to your bankroll growth, never because of a hot streak.