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Vig calculator

Enter both sides of a market to see the book's margin and what the fair, no-vig price would be.

Vig (hold)
4.55%
The book's margin
Total implied
104.76%
100% = no margin
With the vig removed
Side A50.00% (+100)
Side B50.00% (+100)

Vig here is the hold— the book's expected margin on total stakes, which is what the industry quotes. A standard -110 / -110 market holds 4.55%. The vig is removed proportionally, which assumes the book applied its margin evenly across both sides; that is the standard method and it is not always exactly how a book prices a heavy favourite.

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