NFL Game Moneylines Explained
Understand NFL game moneylines, two-way versus three-way outcomes, tie and overtime rules, payout math and how to match the same game across venues.
Educational guide. Reviewed by the TurbineFi editorial team on October 27, 2026. All numerical examples are hypothetical.
An NFL game moneyline prices a winner rather than a winning margin. Comparing two quotes requires more than spotting the same team names: you need the same game and a complete description of how every possible result pays. This guide works through one invented game, with no live fixture or quoted market.
First identify one game and one settlement window
For a hypothetical Harbor versus Valley game, record the event date, teams and home/away designation, then the period being priced. A first-half Harbor win, a regulation Harbor win and a final Harbor win including overtime are separate questions. A season matchup between the same teams on another date is a different event.
Match postponement, cancellation and official-result terms as well as the headline outcome. Kalshi’s settlement guidance distinguishes the displayed close time from determination and directs readers to the market’s official source. Do not use the exchange’s trading deadline as a substitute for the game period.
Two-way and three-way moneylines cover different result sets
A regulation three-way market explicitly includes Harbor win, Valley win and a tie. Backing only the two team wins leaves the tie uncovered. An NFL regular-season game can also finish tied after overtime, so “full game” alone does not prove there are only two payable outcomes.
A two-way sportsbook market may return stakes for a tie under its terms; a yes/no Harbor-win contract might instead settle no. In that case Harbor-no includes both Valley wins and ties. Harbor-no and Valley-yes are not exact substitutes. Map each possible result to each position’s payout before calculating an apparent edge.
Calculate profit and total return separately
At +120, a $50 winning stake earns $60 profit and returns $110 total. At −120, a $60 winning stake earns $50 profit and returns $110. These prices imply break-even probabilities of about 45.45% and 54.55%, respectively, before costs. The stake changes dollar exposure, not the implied probability.
When a $1-settling contract costs 45¢, 100 contracts cost $45 and return $100 on a winning settlement, leaving $55 profit. That conversion assumes the stated $1-or-$0 payout. A fair-price, refund or other exceptional settlement requires its own payout scenario rather than the binary shortcut.
Match outcomes before looking for arbitrage
Build a small outcome table for Harbor win, Valley win and tie. For each venue position, write the settlement payment in every row, including what happens if the game is voided. Only then compare the cost of a portfolio with its lowest possible payout under those shared terms.
The multi-outcome arbitrage calculator accepts prices for an exhaustive set of mutually exclusive outcomes. It does not validate your event match or model every push and refund rule. Fees, order depth, limits and a failed second fill can remove an apparent advantage. If the settlement table is incomplete, a balanced two-team stake calculation is insufficient.
Illustrative example: Three hypothetical regulation outcomes, one budget
Illustrative example: assume decimal prices of 2.20 for Harbor, 2.20 for Valley and 15.00 for a regulation tie, all under matching rules. Reciprocal prices sum to about 0.97576. A $100 budget allocates approximately $46.58 to each team and $6.83 to the tie, producing about $102.48 gross return whichever outcome wins, before fees and rounding.
Leaving out the tie would make the two-team math look more attractive while exposing both stakes to a tied regulation score. These numbers are invented and do not represent available NFL prices. Start with the NFL league guide for contract vocabulary, then use the arbitrage and odds tools with your own compatible inputs.
Work through your own numbers
These free calculators use the inputs you supply. Results describe the model and its assumptions; they do not verify a market or place a trade.
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Sources and review notes
League rules describe play; the specific venue contract controls settlement. Check the current contract before comparing positions. All numerical scenarios on this page are hypothetical. Team and league names identify the subject of this independent guide.
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