How much are spreads really costing you in trading?

The spread is the trading cost that is easiest to overlook: it is built into the gap between the bid (selling price) and ask (buying price), rather than charged as a separate fee. Commissions, overnight financing, and taxes also affect trading results, while slippage (the difference between the expected and executed price) can increase or reduce execution costs. But the spread creates a cost even on commission-free trades, and frequent transactions multiply that expense.

Elev8, a global CFD broker, explains how to calculate the real cost of a trade and why spread costs can make tight price moves harder to capitalise on, even with a correct market call.

How do you calculate the real cost of a trade?

To calculate the total cost of a completed trade, combine the spread cost, commissions, net overnight financing charges, and slippage. Include costs from both opening and closing the position, and subtract any financing credits or benefits from favourable execution.

• Spread cost—the difference between the bid (selling price) and ask (buying price). The spread can differ between entry and exit.
• Commissions—separate transaction fees charged when opening or closing a position, depending on the account and instrument.
• Net overnight financing—the net balance of charges and credits for holding a position past rollover (the daily point when positions are carried into the next trading day). These adjustments are commonly called swaps.
• Slippage cost—the difference between the expected and executed price, converted into money. Unfavourable slippage increases costs while favourable slippage reduces them.

Total trading cost = spread cost + commissions + net overnight financing charges + slippage cost.

When opening and closing a position in full, the total spread expense is calculated by multiplying position size by the average spread across both transactions:

Spread cost ≈ position size × average spread.

In XAUUSD CFD trading, 1 lot = 100 troy ounces (oz), while a smaller 0.1 lot equals 10 oz. At an ask price of $4,000.30 and a bid price of $4,000.20, the spread is $0.10. If the spread averages $0.10 across entry and exit, the total spread cost is:

Spread cost (1 lot) = 100 (oz) × $0.10 = $10.00.

Spread cost (0.1 lot) = 10 (oz) × $0.10 = $1.00.

Spread cost (0.01 lot) = 1 (oz) × $0.10 = $0.10.

Why can a spread undermine an otherwise successful Gold trade?

The XAUUSD spread can outweigh a small favourable price movement, leaving a trader with a loss despite correctly anticipating the market's direction. A new position typically shows an unrealised loss because a buy trade opens at the asking price but is valued for an immediate sale at the lower bidding price. The price must move far enough in the trader's favour to cover that gap before the position breaks even, excluding other costs.

For instance, for a 0.1 lot position (10 oz), a $0.10-per-ounce spread absorbs 20% of a targeted $0.50-per-ounce movement: $0.10 ÷ $0.50 × 100. That means a $5 favourable movement leaves $4.00 after the $1.00 spread cost, assuming an unchanged spread and no other charges. A smaller favourable movement could be absorbed entirely by the spread.

Gold's liquidity does not guarantee a narrow XAUUSD spread at every moment. World Gold Council analysis found that notable spikes in gold spread were concentrated around periods of thinner liquidity and price gaps. News-driven uncertainty can also widen spreads, making entry or exit more expensive precisely when traders want to act.

How much do repeated Gold trades cost over a month?

Spread costs differ significantly depending on the trading session. The general rule for an XAUUSD position is that when liquidity falls, spreads widen. For example, the London–New York overlap (roughly 13:00 to 16:00 UTC) is the most liquid time of the entire global trading day for XAUUSD. Because liquidity is at its peak, spreads are typically at their narrowest (often $0.10 to $0.20 per ounce). Spreads widen during low-liquidity sessions (like the Asian session or late-night/roll-over hours).

For a standard retail position of 0.1 lot (10 troy ounces), the cost per completed trade is:

Cost per trade = 10 oz × ($0.10–$0.20 per ounce) = $1.00–$2.00

Over 20 business days, total monthly spread costs equal:

• 5 trades a day: ($1–$2) × 5 × 20 = $100–$200 a month.
• 10 trades a day: ($1–$2) × 10 × 20 = $200–$400 a month.
• 15 trades a day: ($1–$2) × 15 × 20 = $300–$600 a month.

During quieter Asian-session hours, if the spread doubles to $0.20–0.40 per ounce, a 0.1-lot position (10 troy ounces), the cost per completed trade is:

Cost per trade = 10 oz × ($0.20–$0.40 per ounce) = $2.00–$4.00.

Over 20 business days, total monthly spread costs equal:

• 5 trades a day: ($2–$4) × 5 × 20 = $200–$400 a month.
• 10 trades a day: ($2–$4) × 10 × 20 = $400–$800 a month.
• 15 trades a day: ($2–$4) × 15 × 20 = $600–$1,200 a month.

At rollover (when positions are carried into the next trading day) or during major news releases, spreads can widen significantly to $0.30 to $0.60 per ounce. For a 0.1 lot position (10 troy ounces), the cost per completed trade is:

Cost per trade = 10 oz × ($0.30–$0.60 per ounce) = $3.00–$6.00.

Over 20 business days, total monthly spread costs equal:

●      5 trades a day: ($3–$6) × 5 × 20 = $300–$600 a month.

●     10 trades a day: ($3–$6) × 10 × 20 = $600–$1,200 a month.

●     15 trades a day: ($3–$6) × 15 × 20 = $900–$1,800 a month.

Intraday strategies are particularly sensitive to spreads because the cost is incurred repeatedly against relatively small target movements. A wider spread reduces the average net gain on winning trades and increases the loss on unsuccessful ones, raising the win rate or reward-to-risk ratio needed to break even. What matters is not just the minimum advertised spread, but how the spread behaves during the hours and market conditions in which the strategy operates,' says Kar Yong Ang, a financial market analyst at Elev8 broker.

Does your trading strategy still work after spread costs?

The smaller the target and the more frequent the trades, the more the spread matters. For scalpers, it can consume most of the movement they aim to capture. For day traders, repeated entries and exits turn small costs into a substantial daily expense. Swing traders and longer-term traders generally target larger moves, making the spread less dominant, although frequent position adjustments add costs and overnight financing can accumulate. Across every style, the test is the same: does the strategy still work after the costs of executing it?

Disclaimer: This article does not contain or constitute investment advice or recommendations and does not consider your investment objectives, financial situation, or needs. Any actions taken based on this content are at your sole discretion and risk—Elev8 does not accept any liability for any resulting losses or consequences.

Elev8 is a licensed global broker serving 18+ million traders in 100+ countries. It offers market access through 3 platforms: Elev8Trader, MetaTrader 4, and MetaTrader 5. Operating under licences from Mauritius and Seychelles, Elev8 provides traders with the tools to help spot and capture more market opportunities. The broker received the 'Best Trading Experience Broker 2026' and the 'Best Trading Platform Provider 2026' awards from FxDailyInfo.

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