Fill in the four fields below to see what fees actually take and how far the price has to move before you break even. Both the fee rate and the withdrawal fee are yours to enter — this page does not quote rates for any exchange, so use what your own fee page and withdrawal page show.

Stake (quote currency, e.g. USDT)

One-way trading fee (%)

Round trips (buy + sell counts as one)

Withdrawal fee (converted; 0 if not withdrawing)

0.20%

the price has to move this much for you to break even

Cumulative trading fees0.20
Withdrawal fee0.00
Total cost0.20
Total cost as share of stake0.20%

Fill the fields in and this line will say which variable to change.

This tool charges a complete round trip — one buy and one sell. If you buy and then withdraw the coin without selling, only the buy is charged, so your real share comes out a little lower than the figure here.

Everything is computed in your browser; the numbers you type never leave this device.

How to use this and how to read the result

What problem it solves

A common misconception is that small trades pay proportionally more in fees. Trading fees are charged as a percentage of trade value, so the share does not change with size; what does change with size is the impact of fixed charges such as withdrawal fees. This tool separates the two so you can see where your cost really comes from.

What goes in each field

Stake: the amount of quote currency you plan to commit. One-way fee: the percentage charged on a single buy or sell, taken from your own fee page. Round trips: one buy plus one sell is one round trip. Withdrawal fee: only if you plan to move the asset on-chain, converted into the same currency as your stake.

The formulas used

With a one-way rate f and n round trips, break-even movement is 1 / (1 − f)^(2n) − 1 and cumulative trading fees are stake × (1 − (1 − f)^(2n)). The withdrawal fee is then added. The formulas are printed here so you can redo the arithmetic yourself — this tool does nothing you cannot verify.

Reading the headline number

The large percentage is your break-even line: the market has to move that far in your favour before you are back where you started. If it is close to, or larger than, the return you were hoping for from the trade, the trade does not work on cost grounds — and the variable to change is the number of round trips, not the stake.

Where the data comes from

This page does not fetch anything from the internet. It pulls in no live prices and no fee data; every number is one you entered, and the arithmetic happens in your browser using the formulas above. The numbers already filled in are only examples showing what to type, not any exchange's current rates.

Who it is for

Anyone about to place a first real trade, or anyone wondering why a series of small trades keeps leaking money. If you trade frequently, enter your real monthly number of round trips and look at the result.

Small-trade cost share