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Prediction markets from zero: what they are, how prices work, fees, taxes and the rules.

Prediction markets let you buy Yes or No on real-world questions. Each contract pays $1 if you're right, so the price (1¢ to 99¢) is the crowd's probability. Start with what prediction markets are, then how to read the prices, what fees you pay and whether they're legal where you live. Free tools: odds converter and profit calculator.

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