FxPro trading costs are included into the FxPro tight spread, which is the difference between the bid and ask prices on a trade. However, in order to get the whole picture, you need look at all broker costs, including extra fees commissions for deposits and withdrawals, as well as non-trading expenses.
Fees in addition to the base rate
In addition to the spread, you need take into account the FxPro overnight fee paid by the broker; for forex pairings, the cost or revenue is calculated as the interest rate. Alternatively, the difference between the Tomorrow Next Deposit Rates of the two currencies in issue, plus the fee paid by the broker, is referred to as the differential.
This is dependent on the kind of position you are holding, whether long or short, as well as the instrument you are using, and therefore you may earn or lose money on a swap or rollover.