Prediction markets and sportsbooks both let you put money on NFL games, and this season the two look more alike than ever.
Action Network is clearing all of that up. Below, we break down how prediction markets and sportsbooks compare on legality, availability, pricing and NFL market depth — including a look at the same Detroit Lions–Cincinnati Bengals moneyline priced both ways. Thanks to our analysis, you'll know whether to use a prediction market or a sportsbook (or even both) so that your NFL dollar goes furthest.
Prediction Markets vs. Sportsbooks for NFL Betting: Key Differences
Here are the main differences NFL bettors will run into when comparing a prediction market platform with a traditional sportsbook.
| Prediction Markets | Sportsbooks | |
| Who you trade against | Other traders on an exchange | The sportsbook |
| Who sets the price | Supply and demand | The bookmaker |
| Price format | Contracts priced 1¢-99¢ | American odds |
| True cost | Bid-ask spread + trading fees | Vig built into the odds |
| Can you exit early? | Yes, while the market is open | Only if Cash Out is offered |
| NFL market breadth | Main lines, totals, futures, some props | Deeper props, alt lines, parlays, live |
| Regulator | Federal (CFTC) | State gaming regulators |
| Where it's available | Varies by platform and state | Licensed states only |
| Taxes | Profits taxable; reporting varies | Winnings federally taxable |
How NFL Prediction Markets and Sportsbooks Work
A sports prediction market turns an NFL outcome into an event contract. Take a Lions moneyline: the contract trades between $0.01 and $0.99, then settles at $1 if Detroit wins or $0 if they don't.
As for a sportsbook, the operator posts fixed odds and NFL bettors must wager at that price.
Who You're Trading Against
- Prediction market: You trade with other users through the exchange. Market makers can post buy and sell orders to keep money available on both sides.
- Sportsbook: The book accepts your wager and takes the other side.
That's the biggest structural difference. On an exchange, getting the price you want on an NFL contract depends on another trader being willing to meet it.
Who Sets the Price
- Prediction market: Contract prices move on market demand. A contract trading at 65¢ reads as roughly a 65% market-implied probability that side wins the game.
- Sportsbook: The bookmaker sets the line, and the odds on your ticket lock once the bet is accepted.
In a prediction market, if a contract moves after you buy — say, after a big first quarter — the value of your position moves with it. A sportsbook, on the other hand, can change its line for the next bettor, but it can't change the odds already tied to your ticket.
How Each One Makes Money
Prediction markets make money by charging fees when trades go through. The exchange earns that fee whether your position wins or loses, although a wider bid-ask spread can make a trade more expensive.
Sportsbooks make money through the vig built into their odds. That margin means the book can come out ahead over time even when bettors win individual wagers.
Prediction Market Prices vs. Sportsbook Odds
Prediction markets price NFL outcomes in cents per contract, while sportsbooks use American odds. Both are just different ways of expressing implied probability — here's how to translate between them before comparing prices on the same game.
Positive American odds: Implied probability = 100 / (odds + 100).
Negative American odds: Implied probability = |odds| / (|odds| + 100).
| Contract price | Implied probability | American odds (no vig) | Rough sportsbook equivalent |
| $0.65 | 65% | -186 | -200 |
| $0.50 | 50% | +100 | -110 |
You can also use our Prediction Markets Calculator to convert contract prices into American betting odds and implied probability.
Note that some prediction markets (including DraftKings Predictions and FanDuel Predicts) list their odds in American format. Don't let that fool you — you're still trading event contracts, but the app is appealing to sports betting audiences by speaking their language.
Kalshi vs. DraftKings: What $100 on an NFL Game Actually Costs
So how does this play out with real numbers? To keep the comparison clear, we're putting a prediction market (Kalshi) head-to-head with a sportsbook (DraftKings) on the same market: a Detroit-to-beat-Cincinnati preseason moneyline.
Say the Lions are 28¢ on Kalshi and +220 at DraftKings.
Using those prices, $100 of total cash outlay on Kalshi at 28¢ works out to roughly +240 after the taker fee, before any extra spread or slippage. In that case, Kalshi comes out ahead of DraftKings' +220.
Learn more in our Kalshi review! You can also claim the Kalshi referral code to get started.
The Sportsbook Side: How the Vig Works
At -110/-110, each side carries a 52.38% implied probability. Add them together and you get 104.76%, which works out to about a 4.55% theoretical hold. A winning $100 bet at -110 returns $190.91, including $90.91 in profit.
So, if $100 were wagered on each side, the sportsbook would take in $200 and pay $190.91 to the winner, leaving $9.09.
The Prediction Market Side: Fee + Bid-ask Spread
Exchange costs depend on how your order gets filled. At 50¢, for example, Kalshi's standard taker fee works out to $1.75 per 100 contracts. A resting maker order can cost less when maker pricing applies.
Then there's the bid-ask spread. If a market is 50¢ bid and 51¢ ask, buying at 51¢ means paying half a cent above the 50.5¢ midpoint. Once you add the taker fee, the total cost can end up much closer to standard sportsbook vig than the contract price alone makes it look.
Remember: a maker order can still be cheaper, but in a thin market a wider spread can wipe out that advantage.
The Full Comparison
Using the example prices above, here's how a $100 outlay could compare*:
| Platform | Entry price/odds | Fee paid | Total cost | Net return if right | Effective hold % |
| Kalshi | 28¢ | ~$4.80 | ≥$4.80 in trading costs | ~$240.01 profit | 4.80% fee drag** |
| DraftKings | +220 | No separate fee | Vig in odds | $220 profit | ~6.10% |
| Fanatics | +240 | No separate fee | Vig in odds | $240 profit | ~4.23% |
| bet365 | +240 | No separate fee | Vig in odds | $240 profit | ~4.23% |
| BetMGM | +250 | No separate fee | Vig in odds | $250 profit | ~3.45% |
*These prices are examples to show how fees and vig can change the comparison. Actual contract prices, sportsbook odds and spreads move over time.
**Fee drag shows how much of your $100 goes toward exchange fees. Sportsbook hold is different: it estimates the book's built-in margin by comparing the odds on both sides of the same market.
Where It Flips: Longshots and Futures
The order can change again on a longshot. Say a contract is trading at 15¢. On Kalshi, 100 contracts would cost $15 plus about $0.90 in taker fees. If they settle at $1, that's $84.10 in profit on $15.90 spent, or roughly +529 effective odds.
If a sportsbook offered that same outcome at +550, the sportsbook would be cheaper than the exchange trade before you even account for the bid-ask spread.
How NFL Positions Settle
Once an NFL game ends, sportsbooks and prediction markets handle payouts differently. Here's how the two compare when it's time to settle — or when a game gets postponed, canceled or disputed.
| Prediction Markets | Sportsbooks | |
| Result source | Set by the contract rules, usually using an official league or another named source | Set by the sportsbook's house rules and approved data sources |
| Payout timing | After the contract is officially resolved | After the sportsbook confirms the result |
| Void/postponement | Depends on the individual contract | Depends on the sportsbook's house rules |
| Exit early | You can sell while trading is open and there's a buyer | Cash Out only when the sportsbook offers it |
| Dispute path | Starts with the exchange under the federally regulated market framework | Starts with the sportsbook, then the applicable state regulator |
Always check the rulebook before you put money down. A postponed game, cancellation or disputed result can be handled differently depending on the contract or sportsbook.
Where You Can Trade vs. Where You Can Bet
Availability is where prediction markets and sportsbooks split the most. Because the two operate under different regulators, the map of where you can trade an NFL contract doesn't match the map of where you can place an NFL bet.
| Prediction markets | Sportsbooks | |
| Available in | Depends on the platform and contract; some sports markets are available in states such as California and Texas without statewide online sportsbooks | States and jurisdictions where the sportsbook is licensed |
| Restricted or blocked in | Varies by platform because of court rulings, state enforcement and geofencing | States without legal statewide online betting, or anywhere the operator lacks authorization |
There isn't one nationwide availability map for prediction markets. Age minimums can vary too, so check the rules for the specific platform before opening or funding an account.
Keep reading: Where Is Sports Betting Legal? Updated Projections for All 50 States
Are NFL Prediction Markets Legal?
Prediction-market exchanges operate as designated contract markets regulated by the Commodity Futures Trading Commission (CFTC). They can list event contracts through self-certification or seek prior approval. Sportsbooks follow a different system and are licensed state by state.
Sports contracts are still caught in a fight over who gets the final say: federal commodities regulators or state gambling authorities. In April 2026, the Third Circuit sided with Kalshi in its case against New Jersey, finding that its sports contracts fell under federal commodities law. A few months later, a federal court in Utah reached the opposite practical result and allowed the state to enforce its gambling laws against Kalshi.
So the legal picture is still unsettled. Courts have reached different conclusions about whether states can apply their gambling laws to sports contracts, and the CFTC is also considering changes to Rule 40.11 that could reshape how these contracts are treated at the federal level.
Keep reading: How Are Prediction Markets Regulated? The CFTC's Role With Kalshi & Other Operators
Which Is Better for NFL Spreads, Futures, Props and Live?
| NFL market | Prediction markets | Sportsbooks | Better for |
| Spreads & totals | Main lines can be well priced when there's enough depth | More alternate spreads and totals | Prediction markets for liquid main lines; sportsbooks for alt lines |
| Super Bowl futures | You can sell before settlement if buyers are available | Deeper futures menus; Cash Out isn't guaranteed | Prediction markets |
| Player props | Available on major platforms, but menus vary | Far more yardage, touchdown and other player props | Sportsbooks |
| Live / in-game | Available on Polymarket US, Kalshi, Novig and ProphetX; fills depend on the order book | Broader live sides, totals and props | Sportsbooks |
| Parlays / combos | Available on selected platforms, including Kalshi and Novig | Much deeper same-game and multi-game parlay menus | Sportsbooks |
Where to Trade NFL Prediction Markets
| Platform | Fee model | NFL markets | Live | Availability | Minimum | Payout | Age |
| Polymarket US | 0.06 taker formula; maker rebates | Moneylines, spreads, totals, props, futures | Yes | Most states; not AZ, IL, MA, MD, MI, MT, NV, or OH | Market-specific | After settlement | 18+ |
| FanDuel Predicts | 2% transaction fee based on potential payout | Football contracts where eligible | Varies by contract | Nationwide app; sports availability varies by state | Market-specific | After settlement | 18+ |
| Kalshi | 0.07 general taker formula; some markets use different schedules | Games, totals, props, futures, combos | Yes | Restrictions vary by jurisdiction | 1 contract | After determination | 18+ |
| Novig | Live taker fees on eligible markets; maker credits on qualifying live trades | Sides, totals, props, futures, combinations | Yes | Available in most eligible U.S. states; some state restrictions apply | Market-specific | After settlement | 21+ |
| DraftKings Predictions | Both exchange and broker commissions apply. Check DraftKings official fee disclosure for more info. | Moneylines, spreads, totals, player/stat props, futures and awards, plus Combos (up to 6 legs) | Yes | 48 states plus DC and US territories; not in Maine or New Hampshire | Market-specific (1 contract) | After settlement | 18+ |
| ProphetX | 2% of winnings on straight trades | Moneylines, spreads, totals, player markets, futures | Yes | Nationwide except Nevada | Market-specific | After settlement | 18+ |
Before you pick one, check the sign-up offers: the FanDuel Predicts, Novig, DraftKings Predictions, ProphetX, and Polymarket promo codes are all live for new users. Our Novig review and Polymarket review cover those exchanges in more depth.
Where to Bet NFL at a Sportsbook
- Fanatics Sportsbook: Offers NFL sides, totals, props, futures, parlays and live betting. The vig is built into the odds, and availability, minimum bets and age requirements depend on the state.
- BetMGM: Covers the usual NFL menu, including sides, totals, props, futures, parlays and live markets. It operates only in licensed jurisdictions, with state-specific minimums and age rules.
- bet365: Offers NFL sides, totals, props, futures, parlays and live betting. Odds include the sportsbook's margin, while availability and account requirements vary by state.
- DraftKings: Has a broad NFL menu with sides, totals, props, futures, parlays and live betting. Access depends on whether DraftKings is licensed in your state.
- FanDuel: Offers NFL sides, totals, props, futures, parlays and live markets. Like the other sportsbooks here, its odds include vig and its availability depends on state licensing.
Pros and Cons
| 👍 Pros | 👎 Cons | |
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Should You Use a Prediction Market or a Sportsbook?
- Props, parlays and promos: A sportsbook is the better fit. You'll have a much larger NFL menu to choose from.
- High volume or reduced sportsbook limits: Add a prediction market to your options. You're trading with other participants instead of asking a bookmaker to take every wager.
- Long-term futures: Prediction markets have the edge if you want the option to sell before the market ends, as long as someone is willing to buy at your price.
- No legal statewide sportsbook: Check which prediction markets are available where you live. Some federally regulated sports contracts can be traded in states without traditional online sports betting.
For sports bettors who already line shop, using both isn't much of a stretch. Plus, once fees and vig are included, the best number can sit on either side.
Prediction Market vs. Sportsbook FAQs
What is the difference between betting and prediction markets?
Prediction markets let you buy and sell event contracts with other traders as prices move. Sportsbooks take your bet at fixed odds set by the operator.
Are prediction markets legal in the US?
Yes, CFTC-regulated exchanges can list qualifying event contracts under federal law. Sports contracts still face state-level challenges, so access depends on the platform and where you live.
Are prediction markets gambling?
They involve risking money on uncertain sports outcomes, but the legal label is still disputed. Federal courts have treated some sports contracts as swaps, while several states continue to regulate them as gambling.
Are prediction markets more accurate than sportsbooks?
Not necessarily. Prediction-market prices reflect what traders are willing to pay, while sportsbook odds also account for the bookmaker's margin and risk.
Do people actually make money on prediction markets?
Some traders do, but profit is never guaranteed. You still have to overcome bad calls, trading fees and the bid-ask spread.
How are prediction market and sportsbook winnings taxed?
Sports betting winnings are federally taxable. Prediction-market gains can be taxable too, with the exact treatment depending on the contract and your tax situation.
