The commission is not deducted from your account when you open a transaction. The required commission amount gets frozen in your account. The commission will be deducted from your account upon the successful completion of a transaction: activation of Stop Loss or Take Profit, or clicking Panic Sell. If you cancel a transaction or it does not go through due to a service error, the frozen funds will be returned to your account.
Example: You open a transaction in Smart Trade in the BTC\USD pair for a total of $10,000 and set Take Profit to +10% (at $11,000) and Stop Loss to -5% (at $9500).
$25 will be frozen in your service account ($10,000*0.25% = $25) and the commission will be deducted from the account when the transaction closes.
If you cancel the translation before SL or TP activates, $25 will be refunded to your account.
Please note: Panic Sell is regarded as a successful completion of a trade, and that means the commission will be deducted if it is used.