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To calculate Bitcoin profit, subtract your cost from the Bitcoin’s value or sale proceeds. To calculate percentage return, divide that gain or loss by the cost you are comparing against and multiply by 100. For a realistic break-even estimate, include purchase and sale fees: positive costs generally mean the sale price must rise above your entry price before you break even.
Calculate dollar profit or loss
For one Bitcoin purchase, let C be the amount you spent and V be the Bitcoin’s value at the point you are checking. The basic calculation is:
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- Dollar gain or loss = V − C
If you still hold the Bitcoin, V is its current market value, so the result is an estimate of your unrealized change in value. If you sold, use the net proceeds you actually received instead. State what costs are included in C and V; otherwise, a profit figure can be misleading.
Example before fees
Suppose you spend $1,000 on Bitcoin and its value later reaches $1,250. Before costs, the dollar gain is $1,250 − $1,000 = $250. This is an arithmetic example, not a statement about Bitcoin’s current or typical performance.
Calculate percentage return
Percentage return expresses the gain or loss relative to a named starting amount:
- Percentage return = ((V − C) ÷ C) × 100
Using the example above, ($250 ÷ $1,000) × 100 = 25% before fees. The denominator is the original $1,000 spent. “Percentage gain” can mean different things if one calculation uses the purchase price before fees and another uses total cost including fees, so identify the denominator and whether the result is before or after costs.
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Include fees and calculate break-even
When buying q BTC at a price of P per BTC and selling at S, a simple fee-aware model can account for proportional fees on both transactions. Let fb be the purchase-fee rate and fs the sale-fee rate:
- Cost including purchase fee = q × P × (1 + fb)
- Proceeds after sale fee = q × S × (1 − fs)
- Net profit = proceeds after sale fee − cost including purchase fee
- Break-even sale price = P × (1 + fb) ÷ (1 − fs)
For example, if proportional fees are 1% on the purchase and 1% on the sale, the break-even price is approximately 1.0202 × the entry price, or about 2.02% above it. This example assumes both fees are percentages of the specified transaction amounts. It excludes taxes and other charges. Fixed fees, spread, withdrawal charges, or on-chain transaction fees should be added to the relevant cash flows; the SEC’s Investor.gov guide to understanding fees also prompts investors to ask how much an investment must rise to break even.
Unrealized return is not the same as taxable gain
A current-price calculation describes an unrealized change in value. Tax gain or loss generally concerns a sale or other taxable disposition and may use different figures. For U.S. federal tax purposes, the IRS says gain or loss is the difference between adjusted basis and amount realized; its digital-asset FAQ describes amount realized as cash received plus the fair market value of services received in the transaction, reduced by allocable transaction costs. See the IRS digital-asset transaction FAQs.
For U.S. reporting, records can matter when you made multiple purchases or sold only part of your holdings. IRS Publication 550 identifies information such as the asset, transaction date and time, units, fair market value in U.S. dollars, and basis as relevant to calculating gain or loss. The IRS Publication 550 (2025) is a starting point for that recordkeeping context. Do not assume that one average entry price necessarily establishes the basis for the units disposed of; applicable identification rules and tax treatment depend on the circumstances and jurisdiction. These calculations are not a complete tax calculation or tax advice.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Keep records that support the calculation
For your own performance estimate, retain the amount paid, quantity acquired, fees, and the price or proceeds used for comparison. For a possible U.S. tax calculation, also preserve transaction dates and times, units involved, dollar fair market values, and basis information. A displayed unrealized-return figure is not automatically a tax result: Coinbase, for example, describes its own performance display in its investment performance help page, but one platform’s methodology should not be treated as a universal definition or tax method.
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