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πŸ“Š Stock Profit/Loss Calculator

Enter buy/sell price, quantity, fee rates and transaction tax to calculate realized profit/loss, return rate, and break-even sell price.

β€» Transaction tax rates vary by country, market, and year. The 0.18% default is an example only β€” check your broker/exchange's current published rate before trading.
Realized Profit/Loss
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Return β€”
Total Buy Cost (incl. fee)
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Total Sell Proceeds (after fee/tax)
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Break-even Sell Price
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Related calculators Averaging Down Calculator Loss Recovery Calculator Stock Value Calculator
GUIDE

Learn more

01

How realized profit/loss is calculated

Realized profit/loss = total sell proceeds (after fees/tax) βˆ’ total buy cost (including fee). Buying adds brokerage fees to your outlay, while selling deducts fees and transaction tax from your proceeds. Buying 100 shares at 50,000 and selling at 55,000 looks like a plain 500,000 gain, but after fees and tax the real realized profit is smaller.
02

Why fees and tax matter

Korean stock trades incur a transaction tax on sale in addition to brokerage commission, and the exact rate has been repeatedly revised by market segment and year. This calculator's default is illustrative only β€” always confirm the current rate with your broker or exchange before trading. Ignoring fees/tax overstates your actual return.
03

What is the break-even sell price?

The break-even sell price is the price at which, after fees and tax, you exactly recover your total buy cost: break-even = total buy cost Γ· [quantity Γ— (1 βˆ’ sell fee rate βˆ’ tax rate)]. If your actual sell price is below this, you can still realize a loss even when selling above your nominal buy price.

Frequently asked questions

Is 0.18% the exact transaction tax rate?
No, it's an illustrative default. Rates vary by country, market (KOSPI/KOSDAQ), and year, and can be revised β€” always confirm the current rate with your broker/exchange and edit this field yourself.
How do I find my fee rate?
Fee rates differ by broker and trading channel (app/web/branch) β€” check your broker's published schedule.
Why is the break-even price above the buy price?
Because fees and tax are also deducted on the sell side β€” selling at exactly your buy price results in a net loss. The break-even price is the minimum sell price that offsets all costs.
Can I use this after buying in multiple batches?
This calculator assumes a single buy price. If you bought in multiple tranches, first compute your average cost with the Averaging Down Calculator, then use that as the buy price here.