US Reporting Basics for Prediction Markets

Prediction market tax treatment can get complicated quickly, especially if you trade often or use multiple platforms.

This page is not tax advice. It is a practical guide to the reporting basics that most U.S. users should keep in mind.

What matters most

• Keep records of deposits, withdrawals, trades, wins, and losses
• Do not assume the platform will solve your bookkeeping for you
• Understand that different products or platforms may produce different documents
• If your activity is significant, talk to a qualified tax professional

Why record-keeping matters

Even small traders can create a messy tax trail if they enter and exit a lot of contracts.

Good records help you answer basic questions later:

• When did you enter and exit the trade?
• How much did you pay?
• How much did you receive at exit or settlement?
• Were there fees?
• Was the contract held on one platform or multiple platforms?

A practical record checklist

Keep:

• account statements
• export files from the platform
• deposit and withdrawal records
• screenshots or trade confirmations for unusual cases
• notes for any disputed or corrected settlements

Common mistakes

• waiting until tax season to reconstruct activity
• assuming one summary document is complete
• ignoring small trades because they seem immaterial
• mixing personal notes and actual source documents

A practical rule

If a trade would be hard to explain six months from now, document it today.

That includes unusual settlements, partial exits, account transfers, or any trade that depends on an unusual rule interpretation.

FAQ

Does every platform issue the same tax forms?

No. Reporting can differ by platform, product type, and jurisdiction.

Do I still need records if the platform gives me a summary?

Yes. Platform summaries help, but your own records are still important if there is a mismatch or missing activity.

What should I read next?

Start with Taxes and IRS Reporting, then read KYC, VPNs, and Access Risk if your account setup also has jurisdiction issues.