What is a forex spread? A plain-language introduction

The term forex spread refers to the difference between a currency pair's buy price (ask) and sell price (bid). When you open a trade you pay the ask; to close you receive the bid. The gap between those two prices is the spread, and it is one of the direct costs every forex trader pays.

Key terms you should know

Pip — the smallest price move in most FX pairs. For EUR/USD a pip is 0.0001. Read our explainer: What is a Pip in Forex? Pip and Pipette Guide 2026.
Lot — the trade size. Standard = 100,000 units, mini = 10,000, micro = 1,000.
Spread — ask minus bid, measured in pips.
Margin — the money required to open a leveraged position. Formula: margin = (lot size × price) / leverage.
Leverage — how much exposure you control relative to your margin. 100:1 leverage means $1 margin controls $100 exposure.

How spreads are quoted and how to calculate spread cost

Spreads are quoted in pips. Example quote for EUR/USD shown by your platform might be:

Bid: 1.10000
Ask: 1.10012

Spread = Ask − Bid = 0.00012 = 1.2 pips.

To convert spread in pips to dollar cost you use the pip value for your lot size. For pairs where USD is the quote currency (EUR/USD, GBP/USD):

Standard lot (100,000) = $10 per pip
Mini lot (10,000) = $1 per pip
Micro lot (1,000) = $0.10 per pip

Spread cost (round-trip) = spread (pips) × pip value × lots traded.

Worked example: you trade 0.1 lot EUR/USD (10,000 units). Pip value ≈ $1. Spread = 1.2 pips. Spread cost = 1.2 × $1 = $1.20. That $1.20 is the built-in entry cost; you must overcome it before the trade becomes profitable.

Fixed vs variable spreads — what's the difference?

Type	What it means	Pros	Cons
Fixed spread	Spread stays the same regardless of market conditions (as advertised by some brokers).	Predictable trade cost; easier for beginners to calculate risk.	May be wider on average; may worsen during news; sometimes available only on specific account types.
Variable (floating) spread	Spread changes with market liquidity and volatility.	Often narrower during liquid sessions; lower average cost for liquid pairs.	Spreads can widen sharply during low liquidity or news, increasing cost unexpectedly.

Commission models: spread-only vs raw spread + commission

There are two common ways brokers charge you:

Spread-only (no separate commission) — the broker embeds their fee in a wider spread. You pay this gap when you open a position.
Raw spread + commission — the broker offers very tight "raw" spreads but charges a separate commission per lot (sometimes per side, sometimes round-turn). This model is common with ECN-type liquidity.

How to compare: convert the commission into an equivalent pip cost at your typical lot size and add it to the average spread. That gives you the true per-trade cost.

Example (illustrative): if a broker charges $7 round-turn commission per standard lot and you trade 0.1 lot, commission cost = $7 × 0.1 = $0.70. Add the spread cost to this to get total cost.

How spreads affect trade costs and strategy choice

Spreads are an upfront cost and affect strategies differently:

Scalping — scalpers aim for small pip targets. Wide or variable spreads can wipe out the tiny profits scalpers target. Scalpers need low, consistent spreads and fast execution.
Day trading / swing trading — larger targets (tens to hundreds of pips) mean spread cost is a smaller share of potential profit. Spreads matter less but still count.
Carry trades / long-term positions — spreads are one-time entry cost and smaller relative to multi-month moves. However, if spreads are very wide they still cut returns, especially on smaller accounts.

Rule of thumb: the smaller your typical trade target, the more important tight spreads are.

Practical worked examples: calculate cost and position size

Example A — position sizing with spread in mind

Account size: $500
Risk per trade: 1% = $5
Stop loss: 50 pips
Pip value (0.01 lot / micro) for EUR/USD = $0.10 per pip

Position size formula: position size (lots) = risk amount ÷ (stop distance in pips × pip value per 0.01 lot) × 0.01

Compute: risk $5 ÷ (50 pips × $0.10) = 5 ÷ 5 = 1 micro-lot (0.01 lot). With a 50 pip stop and 0.01 lot you risk $5, excluding spread. If spread = 1.5 pips, initial cost = 1.5 × $0.10 = $0.15 — a small addition but still should be accounted for.

Example B — cost comparison for two brokers

Trade: 0.1 lot EUR/USD
Broker X: average spread 1.2 pips, no commission → cost = 1.2 × $1 = $1.20
Broker Y: raw spread 0.3 pips + commission $7 round-turn per standard lot → commission for 0.1 lot = $0.70. Spread cost = 0.3 × $1 = $0.30. Total cost = $0.30 + $0.70 = $1.00

Even though Broker Y charges a commission, total cost here is slightly lower. That's why you must compare the combined spread + commission, not just advertised spreads.

How to compare brokers for spread costs — checklist

Check average spreads for the pairs you will trade. Look for published statistics or ask support for average spreads in live conditions.
Convert commission to pip-equivalent at your typical lot size. Add to the spread to get total cost.
Test spreads in a free demo account with Exness (or your chosen broker) during the exact hours you plan to trade. Demo first, always.
Measure spread behaviour during news, open/close of sessions, and low-liquidity hours — variable spreads can widen dramatically then.
Compare execution quality: slippage, requotes and speed. A low advertised spread is worth little if execution is poor.
Consider currency pair choice: majors (EUR/USD, USD/JPY, GBP/USD) usually have the tightest spreads; exotics are much wider.
Read the fine print: some "fixed spread" accounts widen for news; some ECN accounts require minimum volumes.

For a beginner-friendly overview of choosing a broker see our guide: Best Forex Broker for Beginners 2026 — Practical Guide. To practise measuring spreads and execution, our Forex Demo Account Guide 2026 shows step-by-step how to record spreads in demo mode.

Tips to minimize spread-related losses

Trade major pairs during main sessions (London/New York overlap) for tighter spreads.
Avoid trading around major economic releases unless you account for possible spread widening. See Forex Seasonality 2026 for calendar-aware ideas.
Choose the account type that matches your strategy: scalpers may prefer raw spreads + commission; swing traders often do fine with spread-only accounts.
Use limit orders where appropriate. A well-placed limit can avoid paying a wide spread during volatile ticks, but note limits may not always fill.
Keep position sizes reasonable relative to account size so spread cost remains a small fraction of trade risk.
Track your real trading costs. Use session logs and include spread + commissions when you calculate expectancy — see Expectancy in Trading.

How spreads interact with other trading edge components

Spreads form part of your transaction cost. Even a profitable edge can be eaten by high costs. When you measure strategy performance, include spread and commission in every backtest and forward test. Our course path teaches how to build and test realistic strategies with cost assumptions — see the course catalogue to enrol: https://forexfluency.com/courses.

Hands-on practice (step-by-step)

Open a free demo account with Exness: open a free Exness demo account. Practice only on demo until you can trade consistently.
Pick one major pair (EUR/USD) and record the bid/ask every 15 minutes for three trading days during your preferred session. Calculate average spread.
Place a small test trade matching your planned strategy size and stop. Note the spread cost and any slippage when order is filled.
Adjust your strategy or broker choice if spread costs reduce your expected edge significantly. Use our How to Write a Forex Trading Plan guide to document your rules and costs.

Quick checklist before you risk real money

You know the spread and commission for your account type.
You have measured spreads in demo for the exact session and pairs you plan to trade.
Your position sizing accounts for stop distance and real pip values.
Your expectancy calculation includes all trading costs.

If you want structured, progressive training that walks you from absolute beginner concepts (pips, lots, spreads) to a robust, tested strategy, check our self-paced courses. You can start today at https://forexfluency.com/courses. The courses are ranked by difficulty and priced from beginner to advanced so you learn in the correct order.

Conclusion

Understanding the forex spread is essential. It's a direct trading cost that affects strategy choice, position sizing, and expected returns. Measure real spreads in demo, compare spread + commission across brokers, and pick account types that suit your timeframe. Practice deliberate steps on demo before moving to a live account.

Want guided training?

Forex Fluency provides a structured learning path so you progress from foundations to advanced skills without wasting time on fluff. Browse and enrol at https://forexfluency.com/courses. To practise what you learn, open a free demo account with our partner broker Exness: open a free Exness demo account — demo first, always.

Trading risk warning: Trading forex on margin carries a high level of risk and may not be suitable for all investors. Never trade with funds you cannot afford to lose.

Frequently Asked Questions

What exactly is a forex spread?

A forex spread is the difference between the ask (buy) and bid (sell) price for a currency pair. It's measured in pips and represents a direct cost you pay when opening a trade.

How do I calculate the dollar cost of a spread?

Multiply spread (pips) × pip value per lot × lots traded. Example: 1.2 pips × $1 (0.1 lot EUR/USD) = $1.20.

Should I pick fixed or variable spreads as a beginner?

Variable spreads typically offer lower costs in normal market conditions but can widen during news. Fixed spreads are predictable but sometimes wider on average. Test both on demo and pick the one that suits your trading timeframe and tolerance for surprise widening.

Do brokers charge commission in addition to the spread?

Some do. There are two common models: spread-only (no separate commission) and raw-spread + commission (tight spreads with a separate fee). Always compare total cost (spread + commission) for your typical trade size.

How much does spread affect scalping vs swing trading?

Scalping targets very small moves, so wide spreads can eliminate profits. Swing traders target larger moves where the spread is a smaller percentage of potential gains, making spreads less critical but still relevant.

How can I test a broker's real spreads?

Open a free demo account and record bid/ask prices during the exact hours and pairs you plan to trade. Note spreads during news and session overlaps. Our demo guide shows how: https://forexfluency.com/blog/forex-demo-account-guide-2026-step-by-step-for-beginners.

How do I include spread in my position sizing?

When calculating risk, include stop distance × pip value to find the dollar risk per lot, and ensure your chosen lot size keeps risk within your risk-per-trade limit. Also account for the small upfront spread cost when estimating break-even levels.

Can I avoid spreads entirely?

No. Spreads are the fundamental way markets and brokers price trades. You can minimize them by trading majors in liquid hours and choosing the right account model, but you cannot avoid them entirely.

Forex Spread Explained: Beginner's Guide 2026