Single trade vs a round trip
Single-side fee = trade size × fee rate. A full round trip (buy then sell) pays it twice, so about double the single-side amount.
Multiplying the round-trip cost by daily trade count and days gives the cumulative fee over a period.
Formulas
trade size × fee ratesingle-side fee × 2round trip × trades per day × daysWorked example (recompute it yourself)
At 1,000 USDT per trade and a 0.1% rate: single-side fee 1.00 USDT, one round trip 2.00 USDT.
At 10 round trips a day for 365 days: cumulative fees = 2.00 × 10 × 365 = 7,300 USDT — equal to 730% of the 1,000 USDT per-trade size.
High-frequency trading therefore carries a fee load an order of magnitude larger than most people assume. Any short-term or grid strategy should subtract it before judging viability.
Notes
Actual rates vary by venue, VIP tier and whether platform tokens are used for discounts. Use your own account rate.
Slippage and funding costs also erode returns; this tool covers trading fees only.
FAQ
Why count the fee twice?
Because buying and selling are two separate fills, each charged on its notional. Counting one side only badly understates the true cost.
Is 0.1% high?
That is not for us to judge. Enter your own rate and the calculator shows its absolute cost at any trading frequency.