Estimates only — not financial, tax, or professional advice.
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What it calculates: Net Profit / Loss, Return, Total Cost, Total Proceeds.
Updated 5 June 2026 · Transparent assumptions
Buying and selling are separate charges, often at different rates
A round trip costs you on entry and again on exit. Many exchanges also price the two differently — a maker order that adds liquidity typically costs less than a taker order that removes it, so the same trade can carry two different rates depending on how each leg was filled.
That is why the buy and sell fees are separate inputs. Applying one rate to both understates the cost of a round trip made with two taker orders, which is how most market orders actually execute.
The price has to rise before you are level, not just to get back
With a 0.5% fee on each side, selling at exactly your purchase price loses about 1% of the position. Break-even is the entry price divided by (1 − sell fee) and multiplied by (1 + buy fee), which sits meaningfully above the number most people watch.
On a small move that gap is the whole trade. For anyone trading frequently rather than holding, the cumulative fee drag is usually a larger force on the result than any single price call.
Which matters for tax as well as for the return
In most systems, acquisition fees add to the cost basis and disposal fees reduce the proceeds, so both reduce the taxable gain. Recording only the coin prices and ignoring the fees means reporting a larger gain than you actually made.
The cost basis calculator handles that side properly if you need the figure for a return. This tool is the trading view of the same arithmetic — what the round trip actually earned.
Spread, slippage, network fees and the tax on the gain
The percentage fee is only part of the cost. The bid-ask spread is paid whether or not it is itemised, large market orders move the price against themselves, and moving coins on-chain costs a network fee that has nothing to do with the exchange.
The profit shown is also pre-tax. Crypto disposals are taxable in most jurisdictions, sometimes at a flat rate with no loss offset, so the figure here is the gross result of the trade rather than what you keep.
Sources & References
Figures on this page are checked against primary, authoritative sources. Links open in a new tab.
Returns are assumptions, not guarantees. Actual results may vary because of market performance, taxes, fees, inflation, and timing. This is an educational projection, not investment advice.
Published the calculator with its formula, worked example, assumptions, limitations and a bespoke guide, and added an automated formula test suite covering it.
Tested cost with the buy fee added and proceeds with the sell fee deducted, against totals recomputed from quantity and price.
Tested that selling at the purchase price always loses money once both fees apply, and that break-even sits above the entry price.
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