What a trade actually costs

Three costs eat into profit:

  • Spread — the bid/ask gap, paid on every trade. Tighter is better; majors have the tightest.
  • Commission — some accounts charge a small per-lot fee instead of (or with) a wider spread.
  • Swap — overnight interest for holding a position past rollover. This is riba — which is why ShaFX promotes swap-free (Islamic) accounts that remove it entirely.

ShaFX cashback effectively returns part of your trading cost to you on every lot — lowering your true cost of trading.