Parlay Betting Guide: Everything You Need to Know
Parlay betting combines multiple bets into one wager for a bigger payout. They're exciting, potentially lucrative, and one of the most popular bet types. But they're also risky.
This guide covers everything you need to know about parlay betting.
What is a Parlay?
A parlay (also called an accumulator or multi-bet) combines two or more individual bets into a single wager. For the parlay to win, every single selection must win. If one leg loses, the entire parlay loses.
Example 3-Leg Parlay:
- Chiefs -3.5 ✅
- Lakers ML ✅
- Over 8.5 runs (Yankees) ❌
Result: Parlay loses. All three legs must hit.
How Parlay Payouts Work
Parlay payouts are calculated by multiplying the odds of each leg together. More legs = bigger payout.
Standard Parlay Payouts (at -110 odds per leg)
| Legs | Approximate Payout | $100 Bet Wins |
|------|--------------------|--------------|
| 2 | +264 | $264 |
| 3 | +596 | $596 |
| 4 | +1,228 | $1,228 |
| 5 | +2,435 | $2,435 |
| 6 | +4,741 | $4,741 |
| 7 | +9,145 | $9,145 |
| 8 | +17,557 | $17,557 |
| 10 | +64,273 | $64,273 |
Use our Parlay Calculator to calculate exact payouts for any combination of odds.
How the Math Works
Each leg's decimal odds multiply together:
Example:
- Leg 1: -110 = 1.909 decimal
- Leg 2: -110 = 1.909 decimal
- Leg 3: +150 = 2.50 decimal
Combined odds: 1.909 × 1.909 × 2.50 = 9.11
Payout on $100: $911
Types of Parlays
Standard Parlays
The classic parlay: pick multiple outcomes, all must win.
Same Game Parlays (SGPs)
Combine multiple bets from the same game:
- Chiefs ML + Mahomes Over 275 yards + Kelce TD
SGPs are correlated, so payouts are adjusted. They've become extremely popular for single-game entertainment.
Teasers
A special type of parlay where you adjust the spread in your favor, but at reduced odds.
Example NFL Teaser (6 points):
- Chiefs -7 becomes Chiefs -1
- Bills +3 becomes Bills +9
Easier to win, but lower payout.
Round Robins
Create multiple smaller parlays from a group of selections.
Example: 4 picks → 6 different 2-leg parlays, 4 different 3-leg parlays, 1 4-leg parlay
Use our Round Robin Calculator to explore combinations.
Progressive Parlays
Some sportsbooks offer progressive parlays where you can lose one leg and still get a reduced payout.
The Math Against Parlays
Here's the uncomfortable truth: parlays have a higher house edge than straight bets.
Why Parlays Favor the House
True odds vs. paid odds:
A 2-leg parlay at -110 each:
- True odds: +300 (each leg has ~47.6% win rate → 22.6% combined)
- Paid odds: +264
You're paid less than the true probability suggests. The more legs, the bigger the gap.
Break-Even Win Rates
| Legs | True Win Rate | Needed Win Rate |
|------|---------------|-----------------|
| 2 | 22.7% | 27.5% |
| 3 | 10.9% | 14.4% |
| 4 | 5.2% | 7.5% |
| 5 | 2.5% | 3.9% |
You need to hit parlays MORE often than probability suggests just to break even.
When Parlays Make Sense
Despite the math, parlays aren't always bad. Here's when they can work:
1. Correlated Parlays
When outcomes are linked, parlays can offer value.
Example:
- Team A to win + Under total
If Team A plays great defense and wins low-scoring games, these outcomes correlate. Some books don't adjust odds enough for correlation.
Note: Most sportsbooks now restrict heavily correlated parlays.
2. Positive Expected Value (+EV) Legs
If you find +EV bets individually, combining them can compound value.
Example:
- Bet 1: True odds +150, Book offers +160 → +EV
- Bet 2: True odds -130, Book offers -120 → +EV
- Parlay: Still +EV if both legs are independently +EV
Use our Expected Value Calculator to find +EV opportunities.
3. Small Stakes, Big Dreams
Parlays let you risk small amounts for potentially life-changing payouts. A $10 bet CAN return $1,000+.
For entertainment value and bankroll size, small parlay bets can make sense—just don't expect to profit long-term.
4. Arbitrage/Hedge Situations
You can use parlays as part of hedging or arbitrage strategies:
- Parlay hits 4 of 5 legs
- Hedge the final leg to guarantee profit
Parlay Strategies
1. Keep Legs Low
The more legs, the worse the odds get. 2-4 leg parlays are more realistic than 8-leg moonshots.
Recommended:
- 2-leg parlays: ~23% win rate
- 3-leg parlays: ~11% win rate
- 4-leg parlays: ~5% win rate
Beyond 4 legs, you're playing the lottery.
2. Mix Bet Types
Combining spreads, moneylines, and totals from different games reduces correlation and diversifies risk.
Example:
- NFL spread + NBA moneyline + MLB total
3. Avoid Correlated Losers
Don't parlay outcomes that fail together:
- Team to win + Team's star player props
If the team loses big, the player likely underperforms too. You're doubling your risk.
4. Shop Parlay Odds
Different sportsbooks offer different parlay payouts. Some have reduced juice parlays or better odds multipliers.
Compare your parlay across books before placing.
5. Use Parlays for Hedging
Scenario: You bet Chiefs to win the Super Bowl at +1000 before the season. They make it.
Hedge with a parlay: Bet the opponent + spread + other outcomes to guarantee profit regardless of the Super Bowl result.
6. Same Game Parlay Strategy
For SGPs, look for:
- Outcomes that correlate positively
- Props that align with game flow predictions
- Reasonable combinations (not all long shots)
Parlay Mistakes to Avoid
1. Too Many Legs
Every leg you add cuts your win probability roughly in half. That 10-leg parlay has a ~0.1% chance of hitting.
2. Parlaying Heavy Favorites
Trap:
- Parlay 5 heavy favorites at -300 each
- Feel "safe" because they're all favorites
- One upset kills everything
Heavy favorites don't offer enough payout to justify parlay risk.
3. Chasing Losses with Big Parlays
Lost money? Don't try to win it back with a 10-leg Hail Mary. Stick to your strategy.
4. Not Understanding Correlated Restrictions
Many books won't let you parlay:
- Spread + total from same game
- Heavily correlated outcomes
If a book DOES allow it, odds are adjusted to remove the edge.
5. Ignoring Bankroll Management
Parlays should be a small percentage of your betting portfolio. Most of your action should be straight bets.
Recommendation: No more than 5-10% of bankroll on parlays.
Parlay Rules and Situations
What Happens if a Leg Pushes?
If one leg pushes (ties), it's removed from the parlay. A 4-leg parlay becomes a 3-leg parlay at adjusted odds.
Example:
- 4-leg parlay: 3 win, 1 push
- Result: Paid as a 3-leg parlay
What Happens if a Game is Cancelled?
Cancelled/postponed games are typically removed from the parlay. Same as a push.
What Happens if a Player Doesn't Play?
For player props:
- If the player doesn't play, the leg is voided
- Parlay continues without that leg
Live Parlay Betting
Build parlays during games with live betting:
Strategies:
- Add legs as games develop
- Cash out partial parlays when available
- Hedge final legs with live bets
Risks:
- Odds change rapidly
- Harder to find value in-game
Cash Out Options
Most sportsbooks offer early cash out on parlays:
When to cash out:
- You've hit most legs and want guaranteed profit
- A key player gets injured before the final leg
- Your analysis has changed
When NOT to cash out:
- Cash out value is significantly below expected value
- You have strong conviction on remaining legs
- You're just being emotional
Parlay Tools
| Tool | How It Helps |
|------|--------------|
| Parlay Calculator | Calculate exact payouts for any parlay |
| Round Robin Calculator | Build round robin combinations |
| Expected Value Calculator | Find +EV legs for your parlay |
| Fantasy Optimizer | Compare parlay odds across sportsbooks |
| MonsterGPT | Get AI analysis on potential parlay picks |
Key Takeaways
- Parlays require ALL legs to win—one loss kills the bet
- Payouts are exciting but house edge is higher than straight bets
- Keep parlays to 2-4 legs for realistic win rates
- Parlays work best with +EV individual legs
- Don't parlay heavy favorites—one upset ruins everything
- Use parlays for entertainment, not as your primary strategy
- Shop for the best parlay odds across sportsbooks
Ready to build smarter parlays? Use our Parlay Calculator to calculate payouts, and check Fantasy Optimizer to find the best lines for each leg.