Bankroll Management
The single difference between bettors who survive and bettors who go bust is bankroll management. Edge matters, but variance is brutal — and without sizing discipline, even a +EV bettor will get wiped out by a normal losing streak.
Define Your Bankroll
Your bankroll is money you have allocated specifically to sports betting and can afford to lose entirely. Not rent money, not emergency fund money, not retirement money. Keep it in a separate bank account or sub-ledger if possible — mixing bankroll with daily money is how discipline dies.
Pick a number, write it down, and don't touch it for non-betting expenses. For most NJ bettors, $1,000-$5,000 is a reasonable starting bankroll. Some go higher; many should start lower.
The Unit System
A "unit" is a fixed percentage of your bankroll — typically 1% to 3%. Every bet is sized in units. Most disciplined bettors run 1-2% per bet for normal plays.
- $2,000 bankroll, 1% unit: $20 per standard bet
- $2,000 bankroll, 2% unit: $40 per standard bet
- $2,000 bankroll, 3% unit (aggressive): $60 per standard bet
The unit math means that a 10-bet losing streak at 2% costs you 20% of your bankroll — recoverable. A 10-bet losing streak at 10% (a common mistake) costs you 100%. Bankroll size dictates how long you survive a cold streak.
Flat Betting vs Variable Staking
Flat betting means every bet is the same unit size. Easy to track, hard to argue with, mathematically optimal when your edge is uncertain.
Variable staking sizes bets according to confidence — 1u on stand plays, 2u on stronger plays, 3u on max plays. This is fine if you've tracked enough data to know your higher-confidence picks actually outperform. For most bettors, they don't, and variable staking just amplifies losses.
Start flat. Only switch to variable after 500+ tracked bets demonstrating your higher-confidence groups actually win at a higher rate.
The Kelly Alternative
The Kelly criterion sizes bets based on edge — bigger edges get bigger stakes. Kelly is mathematically optimal but variance-heavy. Most practical bettors use half-Kelly or quarter-Kelly to reduce drawdown risk.
Recalibrate Your Unit
Recalculate your unit size when your bankroll moves significantly:
- +25% / -25%: Recalculate. Your unit should grow or shrink accordingly.
- Don't ratchet up after wins. Lock in profit by withdrawing back to your starting bankroll periodically. Don't let house money tempt you into +5% units.
- Don't refuse to ratchet down after losses. If you started at $2,000 and you're down to $1,400, your unit is now $14 (1%), not $20. Resize.
Stop-Loss Rules
Pre-commit to drawdown limits. If you hit them, stop betting for the day or week.
- Daily stop-loss: If you're down 5 units in a day, stop. Don't open the app again until tomorrow.
- Weekly stop-loss: If you're down 10 units in a week, take a break. Review your bets — was the edge real or were you guessing?
- Monthly review: If you're down 25% of starting bankroll in a month, pause. Something is wrong with your process.
Multi-Book Bankroll
If you have accounts at multiple NJ books (which you should — see line shopping), your bankroll is the SUM across all accounts. Don't size each book independently.
Example: $3,000 total across FanDuel ($1,500), DraftKings ($1,000), and BetMGM ($500). Your 1% unit is $30 across all three, not $15 / $10 / $5. Use whichever book has the best line for each bet.
This means rebalancing periodically — if FanDuel runs to $2,500 and BetMGM drops to $200, move funds via NJ-native instant transfer methods so your unit math still works.
Tracking
You cannot manage what you don't measure. Track every bet:
- Date, book, sport, market, stake, odds (American), result, net P/L
- Bet type tag (NFL spread, NBA player prop, etc.) so you can see what's working
- Closing line value (CLV) — did you bet at a better number than the market closed at?
A Google Sheet works. Apps like Bankroll Buddy, Action Network, and Pikkit also work. The tool doesn't matter — the discipline of recording does.
The Hardest Rule
Don't chase. After a losing day or week, the urge to "make it back" with a larger bet is almost universal. Acting on it is the single fastest path to going broke. If you find yourself reaching for a 5x unit live bet at 9:30pm Sunday, close the app and walk away.
21+. NJ only. Gambling problem? Call 1-800-GAMBLER.