Betting Strategy & Bankroll Management
How you size your bets won’t change the math of the game — but it decides how long your bankroll lasts, how big your swings get, and whether a good run actually leaves money in your pocket. This is the sensible end of the spectrum: the unit system, flat staking, the Kelly Criterion for genuine edges, and a positive progression for pressing a hot streak. No loss-chasing.
The one rule every method shares
Before any system: no staking plan beats a negative-expectation game. A house edge is a percentage skimmed off every dollar you wager, so the more total money you put through the game, the more you expect to lose — full stop. Progressions, Kelly, flat betting — none of them flip that sign. What good money management does do is control variance: it keeps you from going broke on a bad night, stops you from over-betting on a good one, and makes your bankroll survive long enough to enjoy the game. Treat the methods below as risk-control tools, not edges.
Start here: the unit system
A “unit” is one standard bet expressed as a fixed slice of your bankroll rather than a dollar figure. Most disciplined players set one unit at 1–2% of their total bankroll. On a $1,000 bankroll, that’s a $10–$20 unit. Sizing in units instead of dollars does two things: it scales your bets to what you can actually afford to lose, and it keeps a losing stretch from being a bankroll-ending event. Every method on this page is built on units, so settle this number first.
Flat staking: the boring baseline that wins
Flat staking means betting the same one unit every time, regardless of whether you’re up or down. It sounds unglamorous, and that’s the point. Because your bet size never balloons, your bankroll’s swings stay proportional to your edge (or your luck), and you can’t talk yourself into a reckless bet after a couple of drinks and a cold shoe. For anyone who isn’t certain they hold a real, measurable edge, flat staking is the correct default — it’s the lowest-variance way to give yourself maximum playing time on a fixed budget.
The Kelly Criterion: sizing to a real edge
Kelly is the one method on this page that’s actually built around having an edge, which is why it belongs to sports betting and advantage play rather than house games. It answers a single question: given my edge and the odds, what fraction of my bankroll maximizes long-term growth without risking ruin? The formula is f = (p × d − 1) / (d − 1), where p is your true win probability and d is the decimal odds. If your probability doesn’t beat the break-even line baked into the odds, Kelly returns zero or negative — its honest answer is “don’t bet.”
The catch is that Kelly assumes your probability estimate is correct, and almost nobody’s is. Overestimate your edge and full Kelly will badly overbet, producing stomach-churning drawdowns. That’s why most serious bettors use fractional Kelly — typically half — which sacrifices a little growth for a large reduction in volatility. Run your numbers below.
Positive progressions: pressing a hot streak
A positive progression raises your bet after wins instead of after losses. Here's the version I use on an even-money game like blackjack: play your base unit, and once you've stacked two wins in a row, bump the next bet up by half a unit. Win again, add another half of that new bet on top — and keep compounding, each press riding half of the bet you just placed. The instant you lose, you drop straight back to the base unit. I cap the climb at four or five presses, though if a table's running hot I'll occasionally ride it until the streak breaks.
The reason this is sane and Martingale isn't comes down to whose money is at risk. You only ever press after banking wins, so every raised bet is funded by the house's money, not your stake. That means a single loss — even at the very top of the ladder — still leaves you net ahead on the run. You're using a streak to widen a win, never digging out of a hole. The builder below lets you set your base, your press fraction, and a cap; since most casinos won't take half-chip bets, you can also round each step to real $1, $5, or $25 increments.
Why negative progressions (Martingale) are a trap
The Martingale tells you to double your bet after every loss so that one win recovers everything plus a unit. On paper it looks unbeatable. In reality it's the most reliable way to lose a large amount fast. A losing streak is not rare — eight losses in a row happens more often than people think — and each one doubles your exposure: a $10 base becomes $10, $20, $40, $80, $160, $320, $640, $1,280. You're now risking $1,280 to win back $10, and you'll hit the table maximum or run out of bankroll long before the math "saves" you. The system quietly trades many small wins for the occasional catastrophic loss, and the house edge guarantees the trade is a losing one. Any plan that grows your bet while you're losing belongs in the same bin.
Keep the edge in view
Staking plans manage your money; they never touch the game's edge. That number is set by the rules and your decisions at the table, and it's where your real results come from. A few honest baselines, assuming optimal play:
| Game (best play) | Typical house edge |
|---|---|
| Blackjack (basic strategy) | ~0.5% |
| Craps (pass / don't pass) | ~1.4% |
| Baccarat (banker) | ~1.06% |
| Video poker (9/6 Jacks or Better) | ~0.46% |
| Roulette (single zero) | ~2.7% |
| Slots | ~2%–10%+ |
| Sports betting (-110 both sides) | ~4.5% hold |
The takeaway: pick the lowest-edge games, learn their optimal strategy, size your bets in units you can afford, and use a progression only to shape a session you're already winning — never to chase one you're losing.
Take it to the table
Bankroll discipline is only half the job — the other half is playing each game correctly. Pair this with the optimal-play tools for whatever you're sitting down to:
- Blackjack — basic strategy chart (S17/H17 + surrender), where a press progression fits best.
- Sports Betting — odds & vig calculator and CLV, the natural home for Kelly staking.
- Craps — house-edge-by-bet table for finding the low-edge lines.
- Video Poker — pay-table reader to spot full-pay machines.
- Texas Hold'em — starting-hand range chart by position.