If you’ve opened a forex trading platform and wondered why the buy price is slightly higher than the sell price, you’ve already encountered the forex spread.
In simple terms, the spread is the difference between a currency pair’s bid price and ask price. It is one of the main trading costs you need to understand before placing a forex trade. A smaller spread generally means a smaller price difference between buying and selling, while a wider spread means a larger difference.
The good news is that the calculation is straightforward. Once you understand bid, ask and pips, you can work out what a spread means for your trade in seconds.
If you’re completely new, what is forex trading explains the basics of the market.
QUICK ANSWER
A forex spread is the difference between a currency pair’s ask price (buy price) and bid price (sell price). For example, if EUR/USD is quoted at 1.08420 bid and 1.08430 ask, the spread is 0.00010, or 1 pip. The spread is a trading cost because you generally buy at the higher ask and sell at the lower bid. Spreads can change with liquidity, volatility, currency pair, time of day and broker pricing.
What is a forex spread?
A forex spread is the difference between the price at which you can sell a currency pair and the price at which you can buy it.
The two prices are:
- Bid: the price at which you can sell.
- Ask: the price at which you can buy.
- Spread: ask price minus bid price.
Spreads are quoted on each currency pair you trade.
For example, suppose EUR/USD is quoted as:
| Price | Quote |
|---|---|
| Bid | 1.08420 |
| Ask | 1.08430 |
| Spread | 0.00010 |
⇒ Used to confirm how tighter spreads impact trading costs via CME Group bid-offer spread education
The difference is 0.00010, which is 1 pip for a standard four-decimal EUR/USD quote.
The terminology can vary slightly between platforms, with “buy” and “sell” prices sometimes displayed instead of bid and ask. The underlying idea is the same: there is a gap between the two prices. The Bank for International Settlements defines the bid-ask spread in FX as the difference between the price received when selling and the price paid when buying.
⇒ Used to verify FX market structure and bid-ask spread definition via Bank for International Settlements FX market research
What does forex spread mean for a beginner?
It means that a trade doesn’t normally start at exactly the same price on the buy and sell sides.
If you buy EUR/USD at the ask price of 1.08430 and the market immediately remains unchanged, you couldn’t normally close that position at 1.08430. The available bid is 1.08420 in this example.
That 1-pip gap is the spread.
This is why a newly opened trade can show a small unrealised loss even before the market has moved meaningfully in either direction.
How does a forex spread work?
Imagine your broker shows NZD/USD at:
Bid: 0.61240
Ask: 0.61250
The spread is:
0.61250 − 0.61240 = 0.00010
For NZD/USD, that represents 1 pip.
If you’re buying, your entry price is based on the ask. If you’re selling, your entry price is based on the bid.
The same principle applies when you close the position. The side of the quote used depends on whether you’re buying or selling.
To understand execution and order flow, see how forex trading works.
A useful way to think about it is:
Buy at the ask. Sell at the bid. The gap between them is the spread.
In many retail forex and CFD platforms, the spread is built into the quoted prices rather than appearing as a separate line-item fee.
How do you calculate a forex spread?
The basic formula is:
Spread = Ask price − Bid price
To express the result in pips, you then divide the price difference by the value of one pip for that quotation.
For a typical EUR/USD quote:
- Bid = 1.08420
- Ask = 1.08430
- Difference = 0.00010
- Spread = 1 pip
Spreads are measured in forex pip values.
Converting the spread into a trading cost
Suppose you trade 10,000 units of EUR/USD and the spread is 1 pip.
For a USD-quoted pair such as EUR/USD, one pip on 10,000 units is approximately $1.
So the spread component of the trade is approximately:
1 pip × $1 per pip = $1
If the spread were 2 pips instead, the equivalent would be approximately $2 for that position size.
This is an illustration, not a guaranteed execution cost. Actual trading costs depend on the currency pair, position size, account currency, broker pricing and execution conditions.
For a more detailed explanation of pips and pip values, see What Is a Forex Pip?.
Why does the spread matter?
The spread matters because it affects the price movement your trade needs to overcome before it can become profitable, all else being equal.
This is especially relevant to traders who open and close positions frequently.
Consider two otherwise identical trades:
| Trade | Spread | Position | Approx. spread cost* |
|---|---|---|---|
| A | 1 pip | 10,000 units | $1 |
| B | 3 pips | 10,000 units | $3 |
*Illustrative EUR/USD-style calculation where the account is USD and pip value is approximately $1 per pip for 10,000 units.
The difference looks small on one trade. But if the same spread difference occurs across many transactions, the accumulated cost can become more significant.
This is one reason experienced traders don’t judge a broker solely by whether it advertises a low headline spread. They also consider commissions, execution, slippage and the conditions under which the quoted spread is available.
What causes forex spreads to change?
Forex spreads aren’t necessarily fixed.
They can become wider or narrower depending on market conditions, liquidity and the broker’s pricing model.
⇒ Used for liquidity and spread terminology reference via CME Group liquidity methodology guide
Common influences include:
Market liquidity
When there is substantial trading activity and liquidity, spreads can often be tighter.
When liquidity becomes thinner, the difference between available buying and selling prices can increase. Bid-ask spreads are also used as an indicator of market liquidity in financial-market research.
Economic announcements
Major economic releases can cause rapid changes in currency prices and market liquidity. During such periods, quoted spreads can change quickly.
For a beginner, this matters because a spread that looks attractive during quiet conditions isn’t necessarily the spread you’ll see during every market event.
Currency pair
Major currency pairs such as EUR/USD often have different pricing characteristics from less-traded currency pairs.
Don’t assume that a spread considered small for one pair is automatically small for another.
Time of day
Liquidity can vary during the global trading day. The forex market operates across different financial centres, so trading conditions can change as major markets open, overlap or become less active.
Broker and account type
Different brokers can quote different spreads. Some accounts advertise low spreads but charge a separate commission. Others may incorporate more of their trading cost into the spread.
That means spread alone isn’t always the complete cost of a trade.
Fixed vs variable forex spreads
You may encounter two broad approaches to spread pricing.
Variable spread: The spread changes according to market conditions.
Fixed spread: The quoted spread is designed to remain at a specified level under defined conditions, although the exact terms depend on the provider.
Variable spreads can become wider when market conditions deteriorate. Fixed-spread products may have different limitations or pricing arrangements.
Rather than asking only, “Which spread is lower?”, look at the total cost under the conditions in which you actually expect to trade.
Spread vs commission: what’s the difference?
Spread and commission are not necessarily competing concepts. A trading account can involve one, the other, or both.
For example:
- Spread-only pricing: the broker’s compensation is incorporated into the quoted bid and ask prices.
- Commission plus spread: the spread may be relatively narrow, while a separate commission is charged on the transaction.
- Other charges: depending on the product and account, there may also be overnight financing, conversion costs or other fees.
This makes comparing brokers using a single advertised spread potentially misleading.
A better question is:
“What will the total cost of opening and closing this position be?”
A simple way to compare spreads
If you’re evaluating a forex broker, use the following process:
- Choose the currency pairs you actually expect to trade.
- Check the live bid and ask prices.
- Calculate the current spread.
- Check whether a commission also applies.
- Look at the broker’s information about typical or minimum spreads.
- Check what happens to spreads during volatile or less-liquid periods.
- Consider other applicable trading costs.
Don’t choose a broker solely because a marketing page displays an exceptionally small minimum spread. A minimum spread is not necessarily the spread you’ll receive on every trade.
Common beginner mistakes
Thinking the spread is the same as a pip
A spread can be measured in pips, but the two terms mean different things.
A pip is a standard unit used to describe a small change in a currency pair’s exchange rate.
A spread is the difference between the bid and ask prices.
You can therefore have a spread of 1 pip, 2 pips, 0.5 pips or another amount depending on the quotation and market.
Ignoring position size
A 2-pip spread doesn’t represent the same dollar cost for every position.
The larger the position, generally, the greater the monetary effect of the same number of pips.
Looking only at the advertised minimum
A broker’s “from” spread isn’t necessarily representative of every market condition.
Always check the actual pricing information and terms.
Forgetting other costs
A narrow spread doesn’t automatically mean a trade is cheap.
Commission, overnight financing, conversion costs and other charges can affect the total cost.
Assuming a tight spread means a profitable trade
A tight spread only addresses one component of trading cost.
It says nothing about whether the currency pair will move in the direction you expect.
Forex and leveraged derivatives involve substantial risk, and leverage can magnify both gains and losses.
What should New Zealand forex traders know about spreads?
For New Zealand readers, the basic spread calculation is the same as anywhere else. You might, for example, trade or monitor NZD/USD, NZD/AUD or NZD/JPY.
⇒ The Reserve Bank of New Zealand’s exchange-rate data tracks NZD exchange rates against major currencies, including NZD/USD and NZD/AUD.
The regulatory side is separate from the mechanics of spreads. The Financial Markets Authority (FMA) regulates New Zealand’s financial markets and has specific requirements for licensed derivatives issuers. Its current material identifies CFDs as leveraged OTC derivatives and highlights the risks associated with these products.
⇒ Used for NZ derivatives risk and regulatory context via Financial Markets Authority risk assessment report
If you’re considering a provider in New Zealand, don’t assume that a company is regulated merely because it advertises to New Zealand residents. Check the provider’s regulatory status and the protections that actually apply to your account.
This is general educational information, not personal financial or tax advice. Regulatory, legal and tax treatment can depend on your circumstances and jurisdiction.
⇒ Used for NZ licensing and client money rules via FMA derivatives issuer licensing guide
A practical spread checklist
Before placing a trade, ask:
- What are the current bid and ask prices?
- How many pips is the spread?
- What does that spread cost for my position size?
- Is there a separate commission?
- Could the spread widen around major economic announcements?
- Are there overnight or other applicable charges?
- Am I comparing actual trading conditions rather than just a minimum advertised spread?
If you can answer those questions, you already understand one of the most important basic costs in forex trading.
KEY TAKEAWAYS
- The forex spread is the difference between the ask and bid prices.
- You generally buy at the ask and sell at the bid.
- Spreads are commonly expressed in pips.
- The monetary cost of a spread depends on spread size and position size.
- A narrow spread doesn’t necessarily mean the lowest overall trading cost because commissions and other charges may apply.
- Spreads can widen during periods of lower liquidity or heightened market volatility.
- New Zealand traders should separately consider the regulatory status and protections associated with their chosen provider.
FAQ’s
Is a forex spread a fee?
It is a trading cost, although it may not appear as a separate fee on your account statement. With spread-based pricing, part of the broker’s compensation can be reflected in the difference between the bid and ask prices. Some accounts also charge a separate commission.
What is a good forex spread?
There is no single spread that is “good” for every currency pair or trading situation. Compare the spread for the pairs you actually trade and consider the total cost, including commissions and other charges. Market conditions can also cause spreads to change.
What does forex spread mean in pips?
It means the difference between the bid and ask prices has been converted into pips. For example, a 0.00010 difference in a typical EUR/USD quote represents 1 pip.
Do you pay the spread when you buy or sell forex?
The spread affects both sides of a round-trip trade. When you open a position, you transact using the applicable bid or ask price. When you close it, the opposite side of the quote applies. The difference between those prices is one component of your trading cost.
Why does my forex spread suddenly become wider?
Spreads can widen when liquidity falls or market conditions become more volatile. Major economic announcements can also produce rapidly changing prices and trading conditions.
Is a 1-pip spread always better than a 2-pip spread?
Not necessarily. A 1-pip spread is narrower, but the account with a 1-pip spread could also charge a commission or have other costs. Compare the total cost rather than one number in isolation.
Does spread affect forex profit?
Yes. Because the bid and ask prices differ, the market generally needs to move enough to overcome the spread before a position can show a profit, all else being equal. The spread is only one part of the overall result, however.
Is forex spread the same as a pip?
No. A pip is a unit for describing a small exchange-rate movement. A spread is the difference between two quoted prices. A spread can be expressed in pips.
