Records, not advice
Polymarket Tax: Export Your Trade History
Many traders need a clean record of Polymarket activity at tax time. Export your public wallet history to CSV for free, keep a durable archive, and share it with your accountant. Not tax advice.
Not tax advice. This page explains how to obtain and organize Polymarket trade records. Tax treatment of prediction-market activity depends on your country, entity type, and facts. Confirm everything with a qualified professional before you file.
Why Polymarket tax records are hard
Traders searching “polymarket tax” usually hit the same wall: they need a complete activity history, and they are not sure whether the platform will send a broker-style form. In practice, many people rebuild their year from on-chain fills, redemptions, and cash flow, then hand that package to an accountant.
Polycopy does not file taxes for you. It gives you a free way to export Polymarket trades to CSV so you are not stuck scraping the UI at deadline time.
What to gather before you talk to a professional
On-chain history is exportable
Polymarket fills settle publicly on Polygon. That means you can reconstruct a wallet’s activity into CSV without needing a private API key.
CSV beats screenshots
Accountants and tax software work from structured history: timestamps, markets, sides, sizes, and cash movement. An export is easier to audit than UI screenshots.
Keep your own archive
Platform UIs change. A year-end ZIP of activity and summaries is a durable personal record you control.
P&L is best-effort, not a return
Polycopy’s export includes a FIFO realized-P&L summary for convenience. It is not a tax computation or filing form.
How to export Polymarket history for your records
Four practical steps. Preview is free; downloading the full CSV needs a free Polycopy account.
- 1
Export your Polymarket wallet history
Paste your public Polymarket wallet into the free Polycopy export tool to preview activity and download a CSV/ZIP of fills plus by-year and by-market summaries.
- 2
Keep a year-end archive
Save the export outside Polymarket (drive, accountant folder, spreadsheet) so you have a durable record even if UI history changes.
- 3
Reconcile cash movement
Use signed cash-flow columns and summaries to see money in and out across buys, sells, and redemptions. Realized P&L on the export is a best-effort FIFO estimate from public fills.
- 4
Hand records to a professional
Share the CSV with a qualified tax professional or import into software they recommend. Polycopy does not prepare returns or give tax advice.
What the export includes
- Per-fill activity CSV with timestamps, market, side, size, price, and signed cash flow.
- By-year and by-market summaries so you can slice a tax year or reconcile a cluster of markets.
- Best-effort realized P&L from FIFO matching on public fills, labeled as an estimate for record-keeping.
Full column list and ZIP layout live on the export Polymarket trades page. This tax page is the intent hub; the tool is where you actually download.
Frequently asked questions
Does Polymarket send a 1099?
Many traders report that Polymarket does not issue a standard 1099 the way a US broker might. That can leave you responsible for reconstructing your own activity from on-chain history. Always confirm current reporting practices with Polymarket and a qualified professional for your jurisdiction.
How do I get my Polymarket trade history for taxes?
Because Polymarket activity settles publicly on Polygon, you can export any public wallet’s fills and summaries. Polycopy’s free export tool turns that into CSV files you can keep, share with an accountant, or load into a spreadsheet.
Is Polycopy’s realized P&L a tax calculation?
No. Realized P&L on the export is a best-effort estimate using FIFO cost-basis matching on public fills. It is for convenience and record-keeping. It is not tax advice, not a tax form, and not a filing-ready computation.
What cost basis method does the export use?
The summary uses first-in-first-out (FIFO) matching on buy, sell, and redeem fills from the public activity feed. Different jurisdictions and software may use other methods. Confirm with a professional what you should use.
Can I export someone else’s wallet for tax research?
You can export any public wallet because the data is on-chain. For your own taxes you should export the wallet(s) you actually traded with. Exporting other wallets is useful for research, not for filing their returns.
Is this tax advice?
No. This page and the export tool are educational and operational resources only. Tax treatment of prediction-market activity varies by country and situation. Consult a qualified tax professional before filing.
Get your Polymarket history as CSV
Paste your wallet, preview for free, then download the ZIP for your records or your accountant. Educational tool only. Not tax advice.
Export Polymarket tradesRelated: How Polymarket works · FAQ · Payout calculator
Disclaimer: Polycopy is an independent third-party tool and is not affiliated with or endorsed by Polymarket. Nothing on this page constitutes financial, investment, or trading advice. Past performance does not guarantee future results. All trading involves risk of loss — only trade with funds you can afford to lose. Trading fees apply to all trades executed through Polycopy (1% taker / 0.5% maker). Full terms.