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What Are Prediction Markets? A Complete Beginner's Guide

Somewhere between a stock exchange and a sportsbook, there’s a market where people put real money on who wins the next election, whether the Fed cuts rates, or if a tech company hits a trillion-dollar valuation. No bookmaker sets the odds. No analyst picks the number. The crowd does and the crowd, it turns out, is often frighteningly accurate.

Prediction markets have existed in various forms for decades, but 2024 and 2025 changed everything. A landmark court ruling, explosive trading volumes, and mainstream platforms pulling in billions of dollars per month pushed them from a niche forecasting tool into a genuine financial phenomenon. If you’ve been hearing the names “Polymarket” or “Kalshi” and wondering what on earth is going on, you’re in exactly the right place.

CasinoDaddy’s guide covers everything: what prediction markets are, how they work under the hood, where to use them, how to build an edge, and the messy legal landscape still being fought out in courtrooms across the United States. No prior experience needed. Bring curiosity and a healthy scepticism of your own gut instincts.

What Are Prediction Markets? A Complete Beginner's Guide

How Does the Whole Thing Work?

Contracts, Outcomes, and What You’re Actually Buying

Every market on a prediction platform is built around a specific, resolvable question. Good questions have clear, verifiable answers. “Will the Federal Reserve cut interest rates at its September 2025 meeting?” is a clean market. “Will the economy improve?” is not — too vague to ever definitively resolve, and the platform organisers would spend more time arguing about it than trading.

When a market opens, it offers contracts for each possible outcome. Most markets are binary: YES or NO. Some offer multiple outcomes, such as which candidate wins an election, with each outcome priced independently.

Each contract is priced between $0.01 and $0.99, representing a 1% to 99% probability. At resolution, the correct outcome’s contracts pay $1 each, and the wrong outcomes pay $0.

If you bought YES contracts at $0.40 and the event resolves YES, you’ve made $0.60 per contract. If it resolves NO, you’ve lost your $0.40. Simple arithmetic, genuinely difficult execution.

Who Sets the Price? (Spoiler: Everyone Does)

This is where prediction markets get genuinely interesting. Prices aren’t set by an algorithm or an expert panel. They emerge from trading activity.

When more people believe YES is likely and buy YES contracts, the price rises. When doubt creeps in and traders sell, it falls. Every trade is a vote weighted by money, and the aggregate result is a real-time probability estimate that incorporates everything the market collectively knows.

This is called the wisdom of crowds effect, and it works surprisingly well. Academic research consistently finds that prediction markets outperform expert forecasts and opinion polls, particularly for political and economic events. The 2024 US presidential election is the most high-profile recent example: prediction markets had Trump as the heavy favourite well before most major media outlets reflected that. They were right.

The mechanism keeping prices honest is arbitrage. If a contract is mispriced relative to what a well-informed trader believes, that trader profits by correcting it. This constant pressure keeps markets sharp, at least when there’s enough liquidity for it to function properly.

How You Make (or Lose) Money

There are two ways to profit in a prediction market:

  • Hold to resolution. Buy contracts you believe are underpriced and hold them until the event resolves. If you bought YES at $0.30 and it resolves YES, you collect $1 per contract, a $0.70 profit per contract.
  • Trade before resolution. Buy contracts when the probability is low, then sell when the market has moved your way. You lock in profit without waiting for the binary outcome. This requires active management but avoids riding a position to zero if you misread the resolution.

You can also short an outcome on platforms that support it, effectively selling YES contracts you don’t own and betting the price will fall. Think of it as telling the market it’s being too optimistic, and backing that opinion with cash.

The downside is equally clear: if you’re wrong, you lose your stake. Unlike sports betting, though, you can often cut losses by selling before resolution rather than watching a bad position go all the way to $0.

What Can You Put Money On?

The range of prediction markets has expanded dramatically. Here’s a breakdown of the main categories:

  • Politics and elections are by far the highest-volume category. Who wins elections, which party controls Congress, whether a leader survives a confidence vote. These markets are enormous during election cycles and relatively quiet in between, which makes the liquidity swing something to watch.
  • Economics and finance cover central bank rate decisions, GDP growth figures, inflation data releases, and stock market levels. These attract financially sophisticated traders who treat prediction markets as a complement to conventional investing.
  • Sports cover match outcomes, tournament winners, and season totals. Sports markets are growing fast and are the most legally contested category. Sports alone accounted for over 60% of open interest on some platforms in late 2025.
  • Cryptocurrency includes Bitcoin price at a specific date, regulatory approvals, and major project launches. Popular with the crypto-native audience that gravitates toward Polymarket.
  • Science and technology markets ask whether a specific AI milestone will be reached, whether a space mission succeeds, or whether a tech company hits a certain valuation. These attract a specific kind of trader: one who follows technical developments closely and has genuine domain knowledge.
  • Entertainment and culture covers awards shows, chart positions, and viral events. Lower liquidity but often high engagement from people who are passionate about the topic area.
  • Geopolitics covers military conflicts, diplomatic agreements, and sanctions. The most ethically complex category and the one that generates the most public debate about whether these markets should exist at all.

The breadth is part of what makes prediction markets compelling. Any event with a clear, verifiable outcome can, in theory, become a market. Which means almost anything can become a market.

Prediction Markets, Sports Betting, and Financial Trading: What’s the Difference?

People often try to squeeze prediction markets into a category they already understand. “It’s basically gambling” and “it’s basically investing” both miss the mark. The table below shows where they actually sit.

Feature Sports Betting Prediction Markets Financial Trading
What you’re trading Fixed-odds bet vs. a bookmaker Event probability contract vs. other traders Shares, assets, derivatives
Who sets the price Bookmaker (with built-in margin) The market (all traders collectively) The market
House edge Yes, always baked into odds No, platform takes a small fee per trade No, broker charges commission
Can you exit early? Rarely (some cash-out features) Yes, sell contracts before resolution Yes
Settlement On event result On event result ($1 or $0) Whenever you sell, or via dividends
Skill vs luck Mixed, heavy luck component Mixed, more skill on information-heavy events Mixed, varies by strategy
Regulation Gambling authorities CFTC (US) or gambling regulators (varies by country) Financial regulators (SEC, FCA, etc.)

The core distinction is that prediction markets are peer-to-peer. You’re competing against other traders, not fighting against a house with an edge baked in. If you’re better informed than the average participant in a specific market, you have a genuine edge. That’s closer to investing than gambling, but the binary settlement and event-based structure keeps prediction markets in their own lane.

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The Platforms Where It All Happens

Two platforms dominate, controlling around 97.5% of global trading volume between them. A few others are worth knowing.

Kalshi: The One That Fought the Government (and Won)

Kalshi is a federally regulated derivatives exchange based in the US, licensed by the Commodity Futures Trading Commission (CFTC) since 2020. It offers event contracts on politics, economics, sports, crypto, weather, and more, and it accepts deposits in US dollars.

What makes Kalshi historically significant is the fight it picked in 2023. The CFTC tried to block it from offering election-based contracts, classifying them as illegal gaming. Kalshi sued. A federal court sided with Kalshi in September 2024, ruling that election contracts didn’t constitute gambling under the Commodity Exchange Act. The CFTC dropped its appeal in May 2025. That ruling cracked the door open for the entire US prediction market industry.

The numbers that followed were staggering. Monthly trading volume grew from $1.2 billion in early 2025 to $20 billion by January 2026. Kalshi remains the most regulated and most institutionally credible platform available to US users.

Best for: US users who want a fully regulated, dollar-denominated platform with broad event coverage.

Polymarket: The Crypto-Native Powerhouse

Polymarket is a decentralised prediction market built on blockchain infrastructure. Users trade using USDC (a dollar-pegged stablecoin), and settlement is handled by a decentralised oracle system, meaning Polymarket never holds or controls user funds directly. For anyone who’s ever worried about a platform disappearing with their money, that architectural choice matters.

Originally inaccessible to US users after a CFTC cease-and-desist in 2022, Polymarket relaunched in the US in late 2025 after acquiring a CFTC-registered exchange. Its international platform remains far larger. In April 2026, Polymarket US saw $1.3 billion in trading volume compared with $9 billion on Polymarket International.

The platform is known for its clean interface, fast onboarding, and massive political and sports markets. It abstracts blockchain complexity through wallet-less signup via fiat on-ramps and social login, which eliminates the friction that killed earlier crypto-based prediction projects.

Best for: Crypto-comfortable users who want the largest and most liquid global prediction markets.

Manifold Markets: The Free-to-Play Playground

Manifold operates on an entirely different model. There’s no real money involved. Users trade using a play-money currency called Mana, and anyone can create a market on virtually any question, from US elections to “will my cat learn to open the door handle?”

That sounds like it wouldn’t produce useful probabilities. Surprisingly, it often does. During the 2024 US Presidential election, Manifold’s market showed Trump at 58% probability, close to Kalshi’s 59% and Polymarket’s 62.5%. Real financial incentives sharpen forecasting, but their absence doesn’t destroy accuracy entirely.

Manifold briefly experimented with real-money betting through a feature called Sweepcash, launched in September 2024, but that was shut down on March 28, 2025. The platform returned to its play-money roots.

Think of Manifold as a forecasting sandbox. No risk of losing real money, no KYC required, and no restrictions on market creation. For anyone who wants to understand how prediction markets work before putting real cash in, it’s an excellent starting point.

Best for: Beginners learning the mechanics, researchers, and forecasting enthusiasts who want breadth without financial risk.

Other Platforms Worth Knowing

The rest of the market is small. Smaller platforms collectively accounted for just $12.5 billion in total trading volume in 2025, compared to hundreds of billions for Kalshi and Polymarket combined. Some names worth knowing:

  • Metaculus is a forecasting community focused on accuracy tracking and scientific or geopolitical questions. No real-money trading, but a serious community of well-calibrated forecasters who take the intellectual side of this seriously.
  • Interactive Brokers (IBKR) is a traditional brokerage that now offers access to CFTC-regulated event contracts. For European users looking for a regulated entry point, it’s currently the most realistic option.
  • Robinhood entered the prediction market space in late 2025 with a US-focused product. Still limited in scope, but worth watching given its enormous retail user base.

How to Place Your First Trade (Without Having a Meltdown)

Getting started is genuinely straightforward. Here's the process from zero to first trade.

How to Trade on Prediction Markets

Choose your platform

For real-money trading, Kalshi (US, regulated, dollar-denominated) and Polymarket (global, crypto-based) are the two realistic options for most users. If you’d rather learn the mechanics risk-free first, start with Manifold. No shame in that at all.

How to Trade on Prediction Markets

Create an account

Both Kalshi and Polymarket require identity verification (KYC) for real-money accounts. Have your ID ready. The process takes a few minutes. Manifold requires no KYC whatsoever.

How to Trade on Prediction Markets

Fund your account

Kalshi accepts bank transfers and card deposits in USD. Polymarket requires USDC, either from a crypto wallet or via their Stripe or MoonPay fiat on-ramp. Start small. This is still the learning phase.

How to Trade on Prediction Markets

Browse markets and find one you actually have a view on

Don’t pick at random. Find an area where you have genuine information or expertise: sports, economics, technology, whatever you follow closely. The more you know relative to the average trader in that market, the better positioned you are.

How to Trade on Prediction Markets

Read the resolution criteria carefully

Every market has specific terms for how it resolves. “Will the Fed cut rates in September?” might resolve solely based on the official FOMC announcement. Make sure you know exactly what constitutes a YES outcome before buying anything. Misreading resolution criteria is one of the most common and most avoidable beginner mistakes.

How to Trade on Prediction Markets

Assess the price

If the market shows a 40% probability and you believe the true probability is 60%, you have a positive expected value trade. Buy YES. If you think the true probability is 20%, buy NO. The gap between the market price and your estimate is your edge. If you have no view, you have no edge.

How to Trade on Prediction Markets

Size your position sensibly

Every contract can go to zero. Spread across multiple markets, size according to your actual conviction, and never risk more than you can afford to lose completely.

How to Trade on Prediction Markets

Monitor and decide whether to hold or exit early

If a contract has moved significantly in your favour before resolution, selling to lock in profit is a legitimate strategy. Active position management is what separates prediction market traders from passive bettors.

How to Actually Get Good at This

Trading prediction markets well is a skill. It can be built, and the core of it is thinking clearly and honestly about probability.

Think in Probabilities, Not Certainties

The single biggest improvement most new traders can make is shifting from “I think X will happen” to “I think X has a 70% chance of happening.” These sound similar but require completely different mental machinery. Probability thinking forces you to account for uncertainty rather than defaulting to confident declarations.

A useful exercise: after taking a position, ask yourself what would have to be true for you to be wrong. If you can’t answer that question clearly, you’re not actually thinking probabilistically. You’ve convinced yourself of a conclusion and are now looking for reasons to feel good about it.

Calibration Is Everything

Calibration means your stated probabilities match reality over time. A well-calibrated trader who calls something a 70% probability is right about 70% of the time across many such calls.

Most people are badly miscalibrated. They’re overconfident on uncertain events and sometimes underconfident on near-certainties. The good news is calibration improves with practice and feedback. Platforms like Metaculus and Manifold publish calibration data so you can see exactly how your forecasts have performed over time. Few things are more humbling, or more useful.

Exploit Information Edges

The traders who consistently profit aren’t necessarily smarter than average. They’re better informed in specific domains. A doctor has an edge in healthcare markets. A financial analyst has an edge in economic data releases. A political scientist has an edge in electoral markets.

Focus on areas where you genuinely know more than the typical trader. In markets where you have no information edge, you’re not trading with skill. You’re gambling with extra steps.

Watch for the Bias Traps

Prediction markets are vulnerable to the same cognitive biases as every other form of human judgment. The most common ones:

  • Recency bias: overweighting recent events and assuming the trend continues indefinitely
  • Availability bias: assigning higher probability to events that are easily imagined or heavily covered in the media
  • Wishful thinking: buying contracts on outcomes you want to happen rather than outcomes you actually expect
  • Anchoring: being too influenced by the current market price rather than forming an independent probability estimate

The best traders treat their predictions like scientists treat hypotheses: held provisionally, updated when new evidence arrives, and abandoned without ego when proven wrong. The ego part is harder than it sounds.

Know When to Exit Early

Not every market is worth holding to resolution. If a contract has moved from 30% to 70% in your favour with a month still to go, the risk-reward of holding for the remaining $0.30 upside may not justify the risk of a reversal. Selling at a profit before resolution is a legitimate and often smart strategy. Active management separates serious traders from people who buy and hope.

Are Prediction Markets Legal? (It’s Complicated)

The honest answer is: it depends entirely on where you are and which platform you’re using. The legal status of prediction markets is one of the most actively contested regulatory questions in finance right now, and the landscape is moving fast.

The United States: A Federal-vs-State Battle

The US has the most developed and most contested prediction market legal framework. The story begins with Kalshi.

After obtaining Designated Contract Market status, Kalshi started offering political event contracts, such as whether the Democrats would control the House after the 2024 election. The Democrat-controlled CFTC used its authority to prevent these, classifying them as gaming contrary to public interest. Kalshi challenged the restriction. In a surprising result, the federal district court in Washington DC sided with Kalshi, holding that political event contracts were allowed under the Commodity Exchange Act because the underlying event involved politics, not gaming.

The CFTC initially appealed the ruling but dropped the appeal in May 2025 after the change in administration. The current CFTC has taken a strongly pro-prediction-markets position, asserting exclusive federal jurisdiction over CFTC-registered platforms.

The states disagree, loudly. Nevada, New Jersey, and Maryland sent cease-and-desist letters to Kalshi, claiming it was violating state gaming laws. Kalshi sued back. The most significant judicial development as of early 2026 is the Third Circuit’s April 6, 2026 decision affirming a preliminary injunction barring New Jersey from enforcing its gambling laws against Kalshi’s sports-related contracts. Maryland went the other way in August 2025, denying Kalshi’s injunction request. Massachusetts issued a preliminary injunction against Kalshi in January 2026. On April 2, 2026, the CFTC itself sued Arizona, Connecticut, and Illinois, arguing that the Commodity Exchange Act preempts their gambling laws as applied to event contracts.

For US users: federally regulated platforms like Kalshi and Polymarket US operate legally at the federal level. Whether they’re legal in your specific state is actively being litigated and may vary.

Europe: Fragmented and Mostly Restrictive

The EU has no unified prediction market framework, which means each country applies its own gambling or financial rules. As of early 2026, France, Belgium, Poland, Portugal, Hungary, Romania, and Ukraine had banned or restricted Polymarket, while Germany, Spain, Denmark, and Greece remained accessible.

The EU’s approach stands in sharp contrast to the US direction. The European Commission has shown no interest in creating a tailored regime for prediction markets, which means European users face a patchwork of national frameworks with no clear resolution in sight.

The UK classifies prediction markets on politics, sports, and entertainment as gambling, regulated by the Gambling Commission.

The Rest of the World

Outside the US and EU, no jurisdiction has created a dedicated prediction market regime. Singapore banned Polymarket in 2025. Australia prohibits access. Taiwan investigated users for political betting. Polymarket operates without restriction in approximately 180 countries, but that number is shrinking as regulators catch up.

Check your local laws before depositing real money. The regulatory picture changes regularly, and what’s accessible today may not be tomorrow.

The Risks You Should Know Before You Put Money In

Prediction markets are exciting to trade, and that excitement can cloud judgment faster than you’d expect. Here are the real risks, stated plainly.

  • Binary outcomes mean no partial credit. Every contract settles to $1 or $0. A contract you paid $0.70 for can still go to zero if you got the direction right but the timing wrong, or if a late-breaking development flips the outcome. There’s no holding on and hoping for a recovery the way you might with a stock.
  • Liquidity risk is real on smaller markets. On popular markets for major events, liquidity is fine. On niche markets, there may not be enough trading activity to exit at a fair price before resolution. You can end up holding a contract you want to sell with no buyers at a reasonable price. Always check trading volume before entering a position.
  • Low-liquidity markets can be manipulated. A single large trader can move the price significantly on a thinly traded market, creating misleading probability signals. Stick to high-volume markets, especially while learning.
  • Resolution disputes happen. Not every event resolves cleanly. When resolution criteria are ambiguous, disputes arise about whether the YES outcome was actually triggered. Read the terms before you trade, every time.
  • The psychological traps are the same as gambling. Chasing losses, raising stakes after a bad run, emotional attachment to positions, difficulty stepping away. The fact that prediction markets reward skill more than pure luck doesn’t make them immune to compulsive behaviour. The National Council on Problem Gambling has issued guidance specifically covering prediction markets, noting that the mechanics share meaningful overlap with traditional betting and carry similar risks.

If you need support, the National Problem Gambling Helpline (1-800-522-4700) in the US and GamCare (0808 8020 133) in the UK are available. Treat any sign of problem behaviour with the same seriousness you’d bring to any other gambling concern.

Where Are Prediction Markets Headed?

Prediction markets are not a passing trend. The infrastructure is maturing, the volumes are real, and institutional money is paying attention.

Mainstream Financial Integration

The clearest signal of where this is going is who’s entering the space. CME Group and FanDuel announced a partnership to develop an event contracts platform, two of the most established names in financial derivatives and sports betting, joining forces on a prediction market product. That’s not a speculative startup play. That’s institutional validation.

Interactive Brokers now offers access to CFTC-regulated event contracts through its standard brokerage interface. The wall between prediction markets and mainstream finance is getting thinner every quarter.

The Regulatory Endgame

The US federal-vs-state battle will resolve eventually, most likely through Supreme Court precedent or Congressional legislation. Proposed legislation like the Public Integrity in Financial Prediction Markets Act has been introduced, but nothing has passed as of mid-2026. The direction at the federal level is clearly permissive. Whether that survives state-level resistance is the open question.

In Europe, the picture is harder to read. With no indication the European Commission intends to create a tailored framework, European users will likely continue navigating a patchwork of national rules for the foreseeable future.

AI and Automated Trading

Prediction markets are becoming increasingly attractive to algorithmic traders and AI-powered forecasting systems. When a market can be updated in real time based on news feeds, polling data, or economic releases, there’s a natural fit with automated systems that process information faster than humans. This will likely increase overall market accuracy over time, and make obvious mispricings harder to find.

Prediction Markets as Information Infrastructure

Perhaps the most interesting long-term shift is how prediction market prices are being used as data, not just as trading vehicles. Newsrooms, hedge funds, policy analysts, and research institutions now cite Polymarket and Kalshi probabilities the way they once cited polling averages. When a major political event breaks, journalists check the prediction market price first.

That shift, from niche forecasting tool to genuine information infrastructure, suggests prediction markets are here to stay regardless of how the regulatory battles resolve. The market for knowing what’s likely to happen next is, as it turns out, enormous.

You Have the Basics – Get Ready to Trade

Prediction markets sit in a genuinely fascinating place: part exchange, part forecasting competition, part intellectual sport. They reward people who think carefully about uncertainty, update their views honestly, and resist the emotional traps that catch most traders out. The mechanics are approachable, the range of markets is enormous, and getting started has never been easier.

The legal situation is messy and evolving, particularly in the US and Europe. But the core activity — putting money behind a well-reasoned probability estimate and trading against the collective wisdom of the crowd — is going nowhere. If anything, it’s just getting warmed up.

Prediction markets are exciting, but they’re not the only game in town. If you fancy something with a bit less data analysis involved, online casinos offer a different kind of fun with a much gentler learning curve.

Your Questons About Prediction Markets Answered

Do I need to know about crypto to use prediction markets?

Not at all. Kalshi is fully dollar-based and works like any standard regulated platform. Polymarket’s US version also supports fiat deposits via Stripe and MoonPay. Crypto knowledge only becomes relevant if you want to use Polymarket’s larger international platform directly.

Can prediction market contracts expire worthless?

Yes. If you hold a YES contract and the event resolves NO, the contract settles at $0 and you lose your stake. There is no residual value and no partial payout. This is why position sizing and exit management matter far more than in most other markets.

Are prediction markets rigged or manipulated?

On large, liquid markets, manipulation is genuinely difficult. Moving the price requires enormous capital, and any artificial move quickly attracts arbitrage traders who correct it. On small, niche markets with low trading volume, the risk is higher. Stick to high-liquidity markets, especially while learning.

What happens to my money if a platform shuts down?

On Kalshi (CFTC-regulated), user funds are held separately from company funds, which provides structural protection. On Polymarket, the blockchain architecture means your USDC is controlled by your own wallet, not the platform directly. On unregulated platforms, protections are weaker and less defined. Regulation exists for a reason.

Is there a tax obligation on prediction market winnings?

In the US, winnings from CFTC-regulated prediction markets are treated as section 1256 contract gains, with a favourable 60/40 split between long-term and short-term capital gains rates. Outside the US, tax treatment varies by jurisdiction. Keep records of all trades and consult a tax professional in your country. This is genuinely not the place to wing it.

Can you make a living trading prediction markets?

A small number of traders do. The top performers on platforms like Polymarket demonstrate consistent returns across thousands of trades, but they operate with systematic, disciplined strategies and significant starting capital. For most people, prediction markets are best approached as a high-skill activity that can be profitable with the right edge and the right discipline, not as a primary income replacement.

Nadia Content Expert

The Author

Nadia Content Expert

The Author

Nadia Winchester

Content Expert

Nadia is a passionate iGaming writer and casino enthusiast at CasinoDaddy.com. With a keen eye for detail and a deep understanding of online casinos, slot mechanics, and player behavior, she brings fresh perspectives and insightful reviews to our audience. Nadia specializes in crafting unique, SEO-optimized content that helps players make informed decisions. Whether she’s breaking down the latest bonus features or analyzing game providers, her goal is to deliver trusted, high-quality information with every article. Count on Nadia to keep you updated on the best casinos, new releases, and everything trending in the world of online gaming.