Futures Fee Calculator
Two small tools: check whether a win rate still covers taker fees at your leverage, and size a position from your stop. Both run in your browser, with no account, no network call and nothing stored.
Background on the first one: Why a 60% Win Rate Can Still Lose Money.
Does your win rate cover the fees?
Averages are price moves, before leverage. Enter the average loss as a positive number.
Pre-filled from the standard Binance USDT-M taker rate published in our data. Check your own tier.
- Gross expectancy per trade (price move)
- +0.320 %
- Round-trip fees (fee × 2 × leverage, % of margin)
- -0.500 %
- Gross expectancy per trade (% of margin)
- +1.600 %
- Net expectancy per trade (% of margin)
- +1.100 %
- Break-even win rate at these numbers
- 50.00 %
At these inputs the win rate is above the 50.00 % break-even. An illustration of arithmetic, not a forecast: your averages will move.
Position size from your stop
Size = the amount you accept to lose at the stop, divided by the distance to the stop. Leverage changes the margin you lock, not the risk. Same formula as the /size command of our Telegram bot.
- Direction implied by the stop
- LONG
- Stop distance
- 5.00 %
- Position notional
- 200.00
- Quantity (units)
- 2
- Margin used at 5x
- 40.00 (4.0 % of account)
- Round-trip fees on the notional
- 0.20
- Loss if the stop is hit, fees included
- 10.20 (1.02 % of account)
Worked examples
Hypothetical profiles, computed by the same function as the calculator above at a 0.05% taker fee per side. They are illustrations of arithmetic, not results from any account.
| Profile | Win rate / avg win / avg loss | Leverage | Gross per trade (price) | Fees (% of margin) | Net (% of margin) | Break-even win rate |
|---|---|---|---|---|---|---|
| Fat winners, thin losers | 60% / 1.2% / 1% | 5x | +0.32 % | -0.50 % | +1.10 % | 50.0 % |
| Small winners, small losers | 60% / 0.3% / 0.3% | 5x | +0.06 % | -0.50 % | -0.20 % | 66.7 % |
| Low win rate, wide targets | 40% / 3% / 1% | 5x | +0.60 % | -0.50 % | +2.50 % | 27.5 % |
| Coin flip, same size | 50% / 0.5% / 0.5% | 10x | 0.00 % | -1.00 % | -1.00 % | 60.0 % |
Frequently asked questions
Why do fees matter more with leverage?
A taker fee is charged on the position's notional value, on entry and again on exit. Leverage makes the notional larger than the margin you put up, so the same fee is a bigger share of your margin: round-trip fee as % of margin = fee per side × 2 × leverage. The price-move expectancy shrinks by the same fee, but your result as a % of margin is multiplied by leverage, for gains and losses alike.
How is the break-even win rate calculated?
It is the win rate at which the expected result per trade, after the round-trip fee, is exactly zero: (average loss + round-trip fee) ÷ (average win + average loss), with everything in price-move percent. Above it the expectancy at those averages is positive, below it negative. It assumes your averages stay constant, which real trading rarely does.
Does the calculator include funding and slippage?
No. It only counts taker fees. Funding payments on positions held across a funding interval, slippage on fast fills and any maker rebate are extra terms that can move the real result in either direction, so treat the output as a best-case arithmetic floor on costs.
Does leverage change how much I risk per trade?
Not in the position-size calculator: the risk is set by the position size and the distance to the stop. Leverage only changes how much margin is locked. It does change how close the liquidation price sits, which is why the tool warns when the leverage you enter is above the level at which an approximate liquidation would come before the stop.
Where does the default fee come from, and is it my fee?
The pre-filled taker rate is the standard Binance USDT-M futures rate that Darwin Lab publishes in its own data. Your rate may differ with VIP tier, BNB discount or another exchange, so replace it with the figure from your exchange's fee schedule. The calculators run entirely in your browser: nothing is sent or stored.
Educational only, not financial advice. These calculators are arithmetic on the numbers you type: they place no order, ask for no key and say nothing about any trade. Trading futures involves substantial risk of loss, including the loss of your entire margin. Past performance is not indicative of future results. Full disclaimer →