CALCULATOR ARBITRAGE ↑EDGE
Arbitrage Calculator
Two books disagree far enough that backing both sides leaves a margin. This sizes the stakes and shows what you keep.
SHARP READ
Both sides backed at these prices leave a margin — before limits, voids and account risk take their cut.
3.60 — MARGIN ON THE PAIR
SUCKER READ
Free money. Place them whenever, at whatever size you like.
The prices
How it prices
Implied probability A40.00%
Implied probability B56.52%
Combined 96.52%
Under 100% is a gap. At or over, the books' margin swallows it.
What to stake
Side A$100.00
Side B$141.30
Total at risk$241.30
What comes back
If A wins$250.00
If B wins$250.00
Kept, if both legs fill $8.70
The margin is locked only once both legs fill at the prices you calculated. Lines move while you place the second bet, books cap or refuse stakes on arbs, and a voided or restricted leg leaves you one-sided on a bet you never intended to hold.