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Combined Calculator

Combined Calculator

A combined (accumulator) combines several positions into one: every leg must win. This multiplies the decimal returns of each leg, shows your payout and profit, and — crucially — the combined probability you actually need.

5.73
Combined returns
17.5%
Implied probability
$286.50
Total payout
+$236.50
Profit
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HOW IT WORKS

The method.

1

What it does

Combined returns = the product of every leg. Payout = allocation × combined returns. The implied probability (1 ÷ combined returns) shows how unlikely the whole ticket really is.

2

Why the returns balloon

Each leg multiplies the price, so payouts look huge — but so does the risk. Three 1.91 legs already need all three to land at ~14% combined probability.

3

The discipline angle

Combineds carry a bigger broker margin than singles (margins compound too). Tracking their CLV and hit rate honestly is the only way to know if they're worth it.

The formula
D_combined = D₁ × D₂ × … × Dₙ P_needed = 1 / D_combined
Where
  • Dᵢdecimal returns of leg i
  • nnumber of legs
  • P_neededtrue combined probability just to break even

Payout = Stake × D_combined. Every leg must win — one loss kills the whole ticket.

Worked example

Three legs at 1.50, 2.00 and 1.80; stake of 10.

  1. 1.D_combined = 1.50 × 2.00 × 1.80 = 5.40
  2. 2.Payout = 10 × 5.40 = 54.00 (profit 44.00)
  3. 3.P_needed = 1 / 5.40 = 18.5%
Result: You need an 18.5% real chance to break even
Pro pitfalls
  • Every leg carries the broker's margin — combining multiplies the vig against you.
  • Correlated legs are priced as if independent; the broker keeps the difference.
  • Payouts look huge because the true probability is tiny — variance is brutal.

Educational only — not trading advice. Calculators and simulations are illustrative; past results and simulated outcomes don’t guarantee future returns. Position responsibly.

FAQ

Questions, answered.

You multiply the decimal returns of every leg together. Three legs at 1.91, 2.00 and 1.50 give combined returns of 5.73 — but every leg must win, so the combined probability is just 1 ÷ 5.73 ≈ 17%.
Combineds offer big payouts but carry a bigger broker margin than singles, because each leg's margin compounds. They're high-variance; the honest way to know if yours are worth it is to track their CLV and hit rate over time.
None — they're the same position under different names. 'Combined' is the US term and 'accumulator' (or 'acca') is the UK/European term for combining multiple selections into one position where all must win.
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