CryptoEducational information, not personalized financial advice. Examples are hypothetical. Platform rules and fees can change.
Start with the transaction, not the headline rate
A percentage trading fee is only one part of the cost. The platform, product, order type, payment method, and account tier can change what you pay. Read the fee schedule for the specific service you plan to use.
The basic fee calculation
For a single percentage fee, multiply the trade amount by the fee rate divided by 100. A hypothetical $1,000 trade at 0.1% has a $1 trading fee. At 0.6%, the same trade has a $6 fee. These are arithmetic examples, not current exchange rates.
Look at the spread and execution price
The spread is the difference between the available buying and selling prices. A quoted conversion price can also include a markup. A low advertised fee does not establish a low total cost. The final execution price may differ from the price you saw when placing the order.
Maker and taker fees
An order that adds liquidity to an order book is generally described as a maker order; an order that immediately matches available liquidity is a taker order. A limit order can still execute immediately and incur a taker fee. Check how the specific platform defines and charges each category.
Include the full path in and out
Review deposit, payment-processing, trading, conversion, and withdrawal costs separately. Network fees can change, and withdrawal minimums may matter. If you later sell, that is a separate transaction with its own costs. The calculator on this site models one percentage trading fee only.
Further reading
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