Accumulator (Acca) Calculator
An acca calculator multiplies the decimal odds of every leg: combined odds = odds 1 × odds 2 × odds 3, and the return = stake × combined odds. Every leg must win. Three T20 favourites at 1.80, 2.00 and 1.50 make 5.40, so ₹100 returns ₹540.
If one leg loses, the whole bet loses. The 5.40 price implies an 18.52% chance, with each leg's bookmaker margin inside it: at a 5% edge a leg, this treble pays 85.74% of a fair price.
By CricketPrediction.com ·
Acca odds calculator
Enter decimal odds for 2 to 10 legs and a stake. The results update as you type.
Enter odds (2 legs)
Decimal odds, e.g. 1.85. Tick Void if the bookmaker voids a leg.
Enter decimal odds for every leg and a stake to see the return.
How to Calculate Accumulator Odds
Three steps give the return, and the acca calculator above runs them as you type. Here they are for a treble with ₹100.
- Multiply the odds. 1.80 × 2.00 × 1.50 = 5.40.
- Work out the return. ₹100 × 5.40 = ₹540 if all three legs win.
- Take off the stake. ₹540 − ₹100 = ₹440 profit.
One ÷ the combined odds is the chance the price implies: 1 ÷ 5.40 = 18.52%. That chance includes every leg's bookmaker margin, so it is not a fair estimate of the treble winning.
Worked Example: A T20 Treble
Say you back three T20 favourites on one evening, with ₹100 on the treble.
| Leg | Odds | Combined so far |
|---|---|---|
| Favourite 1 | 1.80 | 1.80 |
| Favourite 2 | 2.00 | 3.60 |
| Favourite 3 | 1.50 | 5.40 |
If all three win, ₹100 returns ₹540. If any one loses, the ₹100 is gone.
Now say the second match is abandoned and the leg is void. If your bookmaker settles a void leg at odds of 1.00, the treble pays as a double: 1.80 × 1.50 = 2.70, or ₹270. Other rules exist, so check before you bet. Tick Void in the acca calculator to see the new figure.
Your own chances change the picture. Put them at 60%, 55% and 70% and the chance all three win is 23.10%. The expected return is 23.10% of ₹540, or ₹124.74: +₹24.74 on ₹100, if those chances are right.
How the Bookmaker's Edge Grows With Each Leg
A bookmaker pays a little less than a fair price on every leg. In an acca those shortfalls multiply. At a 5% edge a leg, which is 1.90 on a 50-50 match instead of 2.00, five legs pay 1.90⁵ = 24.76 instead of 2.00⁵ = 32.00. That is 77.38% of a fair price, an edge of 22.62%.
| Bet | Edge at 5% a leg | Share of a fair price |
|---|---|---|
| Single | 5.00% | 95.00% |
| Double | 9.75% | 90.25% |
| Treble | 14.26% | 85.74% |
| 4-fold | 18.55% | 81.45% |
| 5-fold | 22.62% | 77.38% |
| 6-fold | 26.49% | 73.51% |
| 7-fold | 30.17% | 69.83% |
| 8-fold | 33.66% | 66.34% |
Move the edge slider in the results and the table follows. Per rupee staked, more legs cost more. Five ₹100 singles at a 5% edge expect ₹475 back from ₹500. One ₹100 five-fold expects ₹77.38, a 22.62% cost against 5%. The five-fold still expects to lose fewer rupees here (₹22.62 against ₹25), because only ₹100 is staked.
Void Legs, Same-Match Legs and Rounding
- Void legs. A tied, abandoned or no-result match may be void rather than won or lost. Each bookmaker sets its own rule. Counting the leg at 1.00 is common, but check yours.
- Same-match legs. Multiplying odds treats the legs as unrelated. Picks from one match are linked, so their true joint chance differs from the product. Traditional bookmakers usually refuse such accas or price them together.
- Rounding. This calculator shows money to the paisa. A bookmaker may round a return down.
Linked Legs
Take "Kohli scores 50+" and "India win". If his fifty makes an India win more likely, the chance of both is higher than the two chances multiplied, and an acca price built from the separate odds would be too long. That is why bookmakers usually do not accept linked legs as a normal acca.
System Bets Cover More Combinations
Full-cover bets such as a Trixie, Patent, Yankee or Lucky 15 place every double, treble and bigger combination of your picks, so one loser does not sink everything. A Yankee on four picks is 11 bets: six doubles, four trebles and a four-fold. Each of those bets carries the bookmaker's edge, so covering more combinations costs more stake without removing it.
Frequently Asked Questions
What is an accumulator bet?
An accumulator (acca, parlay, multi or combo bet) links two or more selections into one bet. Every leg must win for it to pay, and if any leg loses, the whole bet loses. The odds multiply, so the return is bigger than any single leg would pay.
How do you calculate acca odds?
Multiply the decimal odds of every leg: 1.80 × 2.00 × 1.50 = 5.40. The return is the stake × 5.40, so ₹100 returns ₹540, a profit of ₹440, if all three legs win.
What happens if one leg of an acca is void?
It depends on the bookmaker's rules. If it settles a void leg at odds of 1.00, as many do, the leg drops out and the acca pays on the rest: void the 2.00 leg of a 1.80, 2.00 and 1.50 treble and ₹100 returns 1.80 × 1.50 × ₹100 = ₹270. Check the rules before you bet.
Why does an accumulator carry a bigger bookmaker edge?
Each leg pays a little less than a fair price, and the shortfalls multiply. If every leg pays 95% of fair (1.90 on a 50-50 match), a five-fold pays 0.95⁵ = 77.38% of fair: an edge of 22.62%, against 5% on a single.
Are singles better than accumulators?
If the prices are fair apart from the bookmaker's edge, an acca loses more per rupee staked than singles, because the edge compounds. If you rate every leg above its price, the acca compounds that too. Either way, every leg has to win for it to pay.
Can I put two picks from the same match in an acca?
Legs from one match can be linked: if a batter's fifty makes his team's win more likely, the chance of both is higher than their odds multiplied suggest. Multiplying treats them as unrelated and misprices the pair, so traditional bookmakers usually do not accept such accas as ordinary multiples.
What is a parlay calculator?
Parlay is another name for an accumulator, so a parlay calculator and an acca calculator do the same sum: multiply the odds of every leg.
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