Every forex trade costs money, even when it wins, and the way your broker charges that cost shapes which strategies make sense. The two main models are spread-only accounts, where the broker builds its fee into the difference between the buy and sell price, and commission accounts, where the spread is tighter but you pay a fixed fee per trade. Neither model is automatically cheaper. The right choice depends on how often you trade, how long you hold, and which pairs you trade. Comparing them properly takes a little arithmetic, but it can save a surprising amount over a year of trading.

On a spread-only account, you pay nothing separately when you open a trade. Instead, you buy slightly higher than the market price and sell slightly lower, and that gap is the broker's revenue. For a major pair like EUR/USD, the spread might be around one pip during liquid hours, but it can widen during news, at the market open, or overnight. That widening is the hidden cost of this model. It is simple and easy to understand, which is why many beginners prefer it. The downside is that you cannot always predict your exact cost in advance, because the spread changes with market conditions. For swing traders who hold for days and target large moves, a slightly wider spread matters less, because it is a small fraction of the total move.

On a commission account, often called a raw spread or ECN-style account, the spread is usually much tighter, sometimes close to zero on major pairs during liquid hours. In exchange, you pay a commission, commonly quoted per lot per side or per round turn. This model makes your cost more predictable, because the commission is fixed while only the small spread varies. Active traders and scalpers often prefer it, because a tight spread matters a lot when your target is only a few pips. The trade-off is that commissions add up on every trade, including losing ones, so a trader who takes many small trades can pay more in commissions than a spread-only trader would pay in spreads. Always check whether the commission is charged per side or round turn before comparing quotes.

To compare fairly, calculate the all-in cost for your typical trade. Add the spread in pips to the commission converted into pips, and multiply by your trade frequency. For example, a day trader taking three trades a day will feel a one-pip difference far more than a swing trader taking three trades a week. Also consider the pairs you trade. Exotic pairs have wider spreads on both models, so the commission model may not save much there. Test both account types on a demo if your broker offers them, and track your actual costs over at least twenty trades, including news periods and session opens. A single quiet-hour comparison can mislead you, because spreads behave very differently when volatility rises.

Scalpers and high-frequency day traders usually benefit from tight spreads plus commission, because their targets are small and spread widening can erase an edge. Swing traders and position traders often do fine on spread-only accounts, because cost is a smaller share of a large move and simplicity matters more. Beginners who trade infrequently may prefer spread-only accounts while they learn, then switch once they know their style and frequency. Whatever you choose, avoid judging a broker on spread alone. Check commissions, swap fees, withdrawal fees, and how spreads behave during news. The cheapest headline spread is not the cheapest account if it widens sharply exactly when you need to trade.