P/L Calculator
Profit-and-Loss Display Basis and Investment Risk
Reference date and last reviewed: July 11, 2026
Calculation Basis
Calculates total profit or loss and return from purchase and sale amounts or units and prices, subtracting any cost fields included in the input.
Reference Limits
It cannot fully determine actual execution fees, taxes, currency effects, dividends, leverage or short-sale costs, liquidity, or price movement. The result is arithmetic reference information for the entered values.
When to Confirm Officially
Before making an investment decision, review the trade confirmation and the product's risk, cost, and tax terms. Past returns and calculator results do not guarantee future returns.
Usage Tips
Check real profit and loss including buy and sell fees
Even if the price of a stock or crypto asset rises, your real return can change after transaction fees and other costs. Enter the buy price, sell price, quantity, and fee rate to calculate net profit, ROI, and the breakeven sell price together.
What is P/L Calculator?
The Profit and ROI Calculator estimates net profit, loss, and return rate for trades with a buy price and sell price, including stocks, crypto, ETFs, foreign shares, resale items, and secondhand transactions. It goes beyond the simple price difference by factoring in quantity, buy fees, sell fees, taxes, spot or margin mode, long or short direction, and leverage. The result shows gross buy amount, gross sell amount, total trading costs, net P/L, ROI, and break-even sell price so you can review trade outcomes or plan target exits more clearly.
How to Use
- 1Choose the transaction type. Standard spot trades use buy price, sell price, and quantity, while futures or margin trades also require long or short direction and leverage details.
- 2Enter buy price, sell price, and quantity. Use shares for stocks, coin units for crypto, or item count for resale and marketplace transactions.
- 3Add buy fees, sell fees, transaction tax, platform fees, or other costs. Costs can turn a small apparent gain into a smaller gain or even a net loss.
- 4For leveraged trades, review margin, position size, and risk separately. Leverage can amplify the displayed return rate, but it also increases the speed and size of losses.
- 5Compare your target profit, target ROI, and break-even sell price before placing or reviewing an order.
- 6Copy total buy amount, total sell amount, net profit, ROI, and break-even price into a trading journal, settlement sheet, or portfolio record.
Net profit starts after fees and taxes
Last reviewed: July 11, 2026Spot profit and ROI formula
net profit = sell value β buy value β buy fee β sell fee β tax
The calculator first computes the gross price difference, then subtracts costs. ROI uses the margin or invested amount as its denominator, so the same net profit can produce a different percentage under leverage.
A spot trade with 10 units and standard Korean stock fees
- β’ Buy at KRW 10,000, sell at KRW 12,000, quantity 10
- β’ Buy and sell fees 0.015% each, transaction tax 0.18%
- β’ Spot mode with no leverage
- 1. Buy value KRW 100,000, sell value KRW 120,000
- 2. Fees and tax = 15 + 18 + 216 = KRW 249
- 3. Net profit = 120,000 β 100,000 β 249 = KRW 19,751
Net profit is KRW 19,751, ROI is about 19.75%, and the break-even sell price is about KRW 10,021.
How to read the result
- A higher sell price does not guarantee net profit because trading costs raise the break-even price.
- Leverage can enlarge ROI on margin while also enlarging position losses and liquidation risk.
Conditions that change the result
- Fee and tax presets vary by product and country, so use the actual execution statement first.
- Tax filing can require transaction history, FX, holding periods, and jurisdiction rules beyond this estimate.
Common input mistakes
- Subtracting only buy value from sell value overstates profit when fees and tax are omitted.
- Selecting long instead of short reverses the profit direction for a price move.
Reference Knowledge
- βNet profit = total sell amount - total buy amount - buy fees - sell fees - taxes - other costs. Real profit is the amount left after every trading cost is deducted.
- βROI = net profit Γ· actual capital used Γ 100. The same profit amount produces a higher ROI with lower capital and a lower ROI with higher capital.
- βBreak-even sell price is the sell price where net profit becomes zero after fees and taxes. A sale must be above break-even to create an actual gain.
- βShort positions profit when price falls and lose when price rises. Because the profit direction is reversed from a normal buy-and-sell trade, position direction must be selected carefully.
- βTaxes and fee rules vary by country, exchange, asset class, holding period, and investor status. This calculator is for quick estimation and does not replace tax, legal, or brokerage statements.
FAQ
Q.What is the difference between profit and ROI?
Profit is the amount of money gained or lost. ROI measures that result as a percentage of the capital used. This calculator shows both, making it easier to compare trades with different sizes.
Q.Do I need to enter fees?
For accurate net profit, yes. Even small commissions, exchange fees, platform fees, taxes, and FX costs can materially change the final return, especially for frequent trades or low-margin resale transactions.
Q.Can I use it for crypto, foreign stocks, and resale items?
Yes. As long as buy price, sell price, quantity, and costs are entered using the same currency basis, it can estimate crypto P/L, stock returns, ETF returns, marketplace margin, and resale profit.
Q.Why does leveraged ROI look much larger?
Leveraged trades control a larger position with a smaller margin amount, so return on margin can look much larger than spot ROI. Losses are magnified in the same way, so risk should be reviewed alongside the result.
Q.Can I use this result for tax filing?
No. Tax filing may require official transaction history, FX rates, fee statements, holding period rules, and jurisdiction-specific tax treatment. Use this calculator as a planning and review tool, not as final tax documentation.
