Polymarket Payout Calculator

Winning on Polymarket is simple in concept: every winning share pays exactly $1.00 USDC at resolution, no questions asked.

But the amount that actually lands in your wallet depends on how many shares you bought, what you paid for them, and how much you paid in taker fees at entry.

This guide explains the full payout mechanics and gives you a free calculator to run your exact numbers.

Polymarket Payout Calculator

Use the calculator below to see exactly how much you will receive at resolution, how much profit you made after fees, and what your ROI looks like. The Early Exit tab shows your profit if you sell your position before the market resolves.

How Polymarket Payouts Work

When you deposit USDC into Polymarket, it is converted into outcome tokens by the platform’s Conditional Token Framework (CTF) smart contract. You receive Yes tokens or No tokens depending on your position. These tokens are not money themselves, they are blockchain-based representations of your claim on the outcome.

When the market resolves, the UMA oracle confirms the result on-chain. The CTF contract then sets a payout vector: the winning side is assigned a value of $1.00, the losing side is assigned $0. You can then call the Redeem function (via the Redeem button on the website) to burn your tokens and receive your USDC back from the contract pool.

The Payout Formula

Gross Payout = Winning Shares x $1.00
Net Profit = Gross Payout minus Entry Cost minus Taker Fee Paid at Entry

Because Polymarket’s taker fee is collected when you buy, it is already baked into your cost basis. There is no additional fee charged at redemption.

What You Actually Receive: A Worked Example

Suppose you believe a candidate will win an election. Yes shares are trading at $0.35.

• You buy 1,000 Yes shares at $0.35 each
• Entry cost = $350.00
• Taker fee (Politics category, dynamic rate at $0.35): approximately $0.91 at this price point
• Total cost = $350.91

If you win:

• Gross payout = 1,000 x $1.00 = $1,000.00
• Net profit = $1,000.00 minus $350.91 = $649.09
• ROI = 185.0%

If you lose:

• Payout = $0
• Total loss = $350.91 (entry cost plus fees)

Is the Payout Automatic?

No. This is one of the most common points of confusion for new Polymarket users. Winning shares do not automatically convert back to USDC. After a market resolves, your winning tokens remain in your wallet as outcome tokens until you actively redeem them.

To redeem, navigate to your portfolio on Polymarket, find the resolved position, and click the Redeem button. The platform calls the redeemPositions() function on the CTF contract, which burns your tokens and returns the equivalent USDC to your wallet. You can redeem at any time after resolution with no time limit or expiry penalty.

Gas Fees on Redemption

Polymarket operates on the Polygon (Layer 2) network. Gas fees for the redemption transaction are typically under $0.01 and in many cases are fully subsidized by the platform through meta-transactions, meaning users pay nothing for the on-chain interaction.

Selling Early: How Exits Work Before Resolution

You do not have to wait for a market to resolve. If your position has moved in your favor (or if you want to cut a loss), you can sell your shares at the current market price at any time before resolution.

Early exit payouts follow the same taker fee structure as your entry. You pay a taker fee on the exit leg as well, which is calculated based on the price at the time you sell. The Early Exit tab in the calculator above shows your full P&L accounting for both the entry fee and the exit fee.

When early exit makes sense:

• The market has already moved strongly in your favor and you want to lock in profit before resolution uncertainty
• New information has changed your view and the market has not yet repriced
• You need your capital back before the resolution date arrives

Holding Rewards: Earning While You Wait

Polymarket pays a 4.00% annualized Holding Reward on eligible open positions. The reward is calculated hourly by sampling your total position value (based on current mid-price) and distributed daily in USDC.

This reward is funded by the Polymarket Treasury and applies to most active markets. The rate is variable and can be changed at Polymarket’s discretion. On a $1,000 position held for 30 days, this amounts to approximately $3.29 USDC in passive rewards on top of your trading profit.

Tax Considerations

Polymarket is a non-custodial platform and does not issue tax forms (such as a 1099 in the United States). In most jurisdictions, buying a Polymarket share is treated as purchasing an asset.

Redeeming a winning share at $1.00 after buying at $0.35 creates a capital gain of $0.65 per share. You are responsible for tracking your own transaction history.

Exporting your wallet’s on-chain history via a tool like Etherscan or a dedicated crypto tax platform (Koinly, CoinTracker) is the most reliable approach.

Frequently Asked Questions