Form 1099 is a family of United States information returns a payer may send to report certain income to you and to the Internal Revenue Service, so a copy of the figure reaches the tax authority as well as you.
Last reviewed 6 December 2025 · Tax position as of 23 June 2026 · General information, not tax advice
Form 1099 is not a single document but a family of United States information returns. A payer, such as a bank, a broker, or a platform, uses the right kind of 1099 to report certain payments or income to the person who received them and, at the same time, to the Internal Revenue Service. The key idea is that a 1099 is informational. It tells the tax authority that a payment was made, so the income is already on the IRS radar before you file your own return.
There are several variants for different kinds of income, each with its own number after the 1099. Common examples include the 1099-INT for interest income, the 1099-MISC for miscellaneous income, the 1099-NEC for payments to independent contractors, the 1099-B used by brokers for proceeds from certain sales, and the 1099-K for some payment card and third party network transactions. Which form you might receive depends on the type and amount of income, and reporting thresholds determine when a payer is required to send one.
The most important point for anyone trading on a platform is this. Whether or not you receive a 1099, you are generally still responsible for reporting your taxable income. The obligation to report does not depend on a form arriving in the post. The IRS expects income to be reported regardless, so the absence of a 1099 does not mean income is tax free, and it does not erase your duty to report. This is why your own record keeping matters so much, because a form may not arrive, may arrive late, or may not capture the full picture of your activity.
For prediction markets specifically, the tax treatment of gains from event contracts is an area where the position is not settled. As of 23 June 2026, there is no specific public IRS guidance that resolves how event contract gains should be classified, and commentators describe more than one possible approach. Because of that uncertainty, and because the answer can depend on the contract, your records, and your own circumstances, this page does not state a single correct treatment. What it can say plainly is that a 1099, if you receive one, is a piece of the picture, not the whole of it. For how any of this applies to you, consult a qualified tax professional. Related ideas include a taxable event, the moment a transaction can create a tax consequence, and cost basis, what you paid, which is used to work out a gain or loss.
Suppose a platform pays you a small amount of interest on your cash balance and sends you a 1099-INT, but it does not send any form summarising your event contract trading for the year. The interest is reported to the IRS through that 1099. Your trading activity, with no form, is not reported for you, yet you may still have income to report from it. Keeping your own transaction records lets you report accurately rather than relying on a form that may not cover everything.
Illustrative only. This is a general example, not tax advice. Whether a form is issued depends on the payer, the income type, and the rules in force.
Tax rules are complex, change over time, and depend on your own circumstances, so treat this only as general information and confirm your position with a qualified tax professional. Prediction markets can lose you money. Stake only what you can afford to lose, never to chase a loss, and never on borrowed money. If it stops feeling like a free choice, step back. In the United States you can call or text the helpline on 1-800-GAMBLER or visit ncpgambling.org.
Form 1099 is a family of IRS information returns that a payer uses to report certain income to a recipient and to the tax authority. There are several variants for different income types, such as 1099-INT for interest and 1099-MISC for miscellaneous income. Receiving one means a copy of that information has gone to the IRS as well as to you.
Generally yes. The duty to report taxable income does not depend on receiving a form. The IRS expects you to report income whether or not a payer sent a 1099, so the absence of a form does not remove a reporting obligation. Keep your own records so you can report accurately. This is general information, not tax advice.
As of 23 June 2026, the tax treatment of event contract gains is not settled by specific public IRS guidance, and commentators describe more than one possible approach. Because the position is unclear and depends on your facts, this page does not state a single answer. Consult a qualified tax professional about your situation.
Check that the figures match your own records, keep the form with your tax documents, and use it when you prepare your return. If something looks wrong, raise it with the payer. Because a 1099 may not capture everything, your own record keeping still matters. For how to apply it, speak to a tax professional.
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