Polymarket profit calculator

Estimate your profit, ROI, and fees on any Polymarket trade. Plug in your buy price, your sell or resolution price, and the number of shares. Toggle between manual and copy-trade fee math.

Trade type

Buy price (per share)$

Sell / resolution price$

Number of shares

Total cost$35.00

Revenue$100.00

Mirrored fee (1% buy + 1% sell)-$1.35

Net profit$63.65

ROI+181.9%

Manual trades pay a 1% fee on each leg - buys and sells alike. Redeeming a winning position is also 1% of the winnings; losing redeems are free. No subscription, no signup fee, no per-trade signing fee. Polymarket's relayer covers on-chain gas.

How profit calculation works

On Polymarket, shares trade between $0.01 and $0.99. If your prediction is correct, each share resolves to $1.00. Your profit is the difference between the resolution price and your entry price, multiplied by the number of shares - minus fees.

The math

Total cost = buy price × shares
Revenue = sell or resolution price × shares
Gross profit = revenue − total cost
Net profit = gross profit − Mirrored fee
ROI = net profit ÷ total cost × 100

Example: buying at $0.35 (manual)

You buy 100 YES shares at $0.35 - total cost $35.00. Mirrored takes 1% of that on the buy ($0.35). The market resolves YES, so each share pays $1.00 and your revenue is $100.00. Mirrored takes another 1% of the winnings ($1.00). Gross profit was $65.00; net profit is $63.65 - about +181.9% ROI on your $35 stake.

Same trade, copy-trade fees

If that trade had come from a lineup or a trader you mirror, the buy is free. Only the winning exit is charged: 1% of $100 = $1.00. Net profit is $64.00 - about +182.9% ROI.

Understanding Mirrored fees

Mirrored charges a flat 1% fee. How it's applied depends on whether you're trading manually or copy-trading:

Manual trades - 1% on every buy and every sell. Redeeming a winner is also 1% of the winnings. Redeeming a loss is free.
Copy trades - entry is free. We only take 1% when you cash out a winner. Losing copy trades cost nothing.

No subscription, no signup fee, no per-trade signing fee, no spread markup, and no withdrawal fee. Polymarket's relayer covers on-chain gas, so trades clear without you needing MATIC.

Quick reference

Manual fee	1% on buy + 1% on sell. 1% on winning redeems; free on losing redeems.
Copy-trade fee	1% on winning exits only. `$0` on losing trades.
Per-trade signing fee	None.
Minimum trade size	`$1.10`
Subscription / signup fee	None.

Continue learning

Polymarket beginner guideFrom zero to your first trade - wallet, funding, and how to mirror traders.

How Polymarket worksPrediction markets explained - share prices, probabilities, resolution.

How to copy trade on PolymarketMirror profitable wallets automatically - manually or with Auto Pilot.

Best Polymarket trading strategiesFive repeatable strategies used by profitable Polymarket traders.

Polymarket odds converterConvert between share price, probability, decimal odds, and American odds.

How profit calculation works

The math

Total cost = buy price × shares

Revenue = sell or resolution price × shares

Gross profit = revenue − total cost

Net profit = gross profit − Mirrored fee

ROI = net profit ÷ total cost × 100

Example: buying at $0.35 (manual)

Same trade, copy-trade fees

If that trade had come from a lineup or a trader you mirror, the buy is free. Only the winning exit is charged: 1% of $100 = $1.00. Net profit is $64.00 - about +182.9% ROI.

Understanding Mirrored fees

Mirrored charges a flat 1% fee. How it's applied depends on whether you're trading manually or copy-trading:

Manual trades - 1% on every buy and every sell. Redeeming a winner is also 1% of the winnings. Redeeming a loss is free.

Copy trades - entry is free. We only take 1% when you cash out a winner. Losing copy trades cost nothing.

No subscription, no signup fee, no per-trade signing fee, no spread markup, and no withdrawal fee. Polymarket's relayer covers on-chain gas, so trades clear without you needing MATIC.