Every forex trade you place starts in negative territory. Before the market has moved a single pip in your favour, you have already paid the spread.
That cost is small on EUR/USD and meaningful on USD/ZAR. It widens during news. It shrinks in deep liquidity. And it is the single line item that quietly decides whether your strategy actually makes money.
This guide explains exactly what the forex spread is, how to calculate it, why it varies, and how South African traders should think about it on local pairs like USD/ZAR.
What Does Spread Mean in Forex Trading?
The forex spread is the difference between the bid (sell) price and the ask (buy) price of a currency pair, measured in pips.
When you open a trading platform and look at EUR/USD, you see two prices, not one. The lower number is the bid, which is the price your broker is willing to pay you to buy the pair from you. The higher number is the ask, which is the price your broker charges to sell the pair to you. The gap between the two is the spread.
That gap is how the broker earns revenue on the trade. On a “no commission” account, the broker’s profit is built into the prices themselves. You buy slightly higher than the true mid-market and sell slightly lower. The difference between the two is yours to absorb.
For a deeper breakdown of how the two prices are set, see our guide on bid and ask price explained.
How to Calculate a Forex Spread
The arithmetic is simple. The implications are not.
Spread = Ask Price − Bid Price
Take EUR/USD quoted at 1.1053 (bid) and 1.1055 (ask):
- 1.1055 − 1.1053 = 0.0002
- For non-JPY pairs, one pip equals 0.0001, so 0.0002 equals 2 pips.
- For JPY pairs, one pip equals 0.01, so a spread of 0.02 also equals 2 pips.
That is the spread in pips. To know what it actually costs you in money, you need to multiply by your pip value, which depends on lot size.
The link between pips and your account balance runs through what a pip is in forex and how leverage works. Both deserve a separate read.
Spread Cost by Lot Size
The same pip spread costs very different amounts depending on how big your position is. This is where most beginners lose perspective on what a “tight” spread actually means in dollars.
| Lot type | Units | Pip value (EUR/USD) | Cost of a 2-pip spread |
|---|---|---|---|
| Standard lot | 100,000 | ~$10 per pip | ~$20 per trade |
| Mini lot | 10,000 | ~$1 per pip | ~$2 per trade |
| Micro lot | 1,000 | ~$0.10 per pip | ~$0.20 per trade |
A 2-pip spread sounds trivial. On a standard lot, it is twenty US dollars (roughly R370 at current exchange rates) paid the moment you open the trade. On twenty trades per week, that is $400 in spread alone. Position size matters as much as the spread itself.
Fixed vs Variable Spreads
Brokers offer two broad spread structures. Choosing between them affects every trade you place.
Fixed spreads
The spread stays the same regardless of market conditions. Fixed spreads are typically offered by market-maker brokers who set their own bid and ask prices. You always know what you will pay, which makes budgeting and back-testing easier. The trade-off is that requotes are more common in fast markets, and the spread itself is usually slightly wider than a typical ECN variable spread during calm conditions.
Variable (floating) spreads
The spread moves with market liquidity and volatility. Variable spreads are offered by ECN and STP brokers, who route your order to a network of liquidity providers. During calm hours on the majors, variable spreads can drop to 0.1 to 0.5 pips. During news events, they can balloon to 10 pips or more on the same pair.
Which one for your trading style?
- Scalpers and intraday traders: variable spreads on an ECN account. Tight calm-condition spreads matter more than predictability.
- Swing and position traders: either works. Spread is a small percentage of the trade’s expected move, so predictability often wins.
- Beginners with small accounts: fixed spreads. The certainty helps you understand cost before you start optimising it.
- News traders: fixed spreads with a strong execution policy, or stay out of the market during scheduled high-impact releases.
When you compare brokers, ask for typical-condition spread quotes on the pairs you actually trade, not the headline EUR/USD rate. The pairs that matter to you are the ones you should compare.
How Spreads Vary Across Currency Pairs
Not all pairs are equal. Spreads track liquidity, and liquidity tracks the size of the underlying economies trading that currency.
- Majors (EUR/USD, GBP/USD, USD/JPY, USD/CHF): 0.5 to 1.5 pips during normal hours. Tightest of any tier.
- Minors (EUR/GBP, AUD/JPY, GBP/CAD): 1.5 to 3 pips. Crosses that exclude the US dollar but still trade in deep liquidity.
- Exotics (USD/TRY, USD/MXN, EUR/PLN): 5 to 50+ pips. Thin liquidity, wide spreads, jumpy on local news.
- USD/ZAR: 50 to 150 pips depending on broker and conditions. Local relevance for South African traders but a real cost to budget for.
The rule: as you move from majors to exotics, you trade tighter liquidity for higher volatility and pay for it in pips. If the spread on a pair is more than 10% of your typical trade target, the pair is fighting you.
Why Spreads Widen on News Events
Spreads are not static. They reflect the broker’s real-time risk of being on the wrong side of the next tick. When that risk spikes, the spread spikes with it.
The biggest spread-widening events on a typical week are:
- US Non-Farm Payrolls (first Friday of the month, 14:30 SAST). EUR/USD spreads can jump from 1 pip to 10+ pips inside thirty seconds. See what is NFP in forex for the full mechanic.
- US CPI and PCE inflation prints. Same effect on USD pairs.
- Central bank rate decisions (Fed, ECB, BoE, RBA, SARB). Spreads widen for the pair tied to the central bank making the call.
- Unscheduled headline events (geopolitical news, sudden risk-off moves). The hardest to plan around.
Spreads normalise within minutes after most scheduled releases. The trader who closes a position thirty seconds before NFP and reopens five minutes after will save more in spread cost than they lose in opportunity. Use the Forex Factory economic calendar to schedule around these events.
Spreads on USD/ZAR for South African Traders
USD/ZAR is the locally relevant pair, but it is not the cheapest pair to trade. Typical spreads sit between 50 and 150 pips during normal hours, depending on broker and time of day. On a standard lot, that is roughly R100 to R300 just to open the position.
Three reasons USD/ZAR spreads are wider:
- Lower liquidity than the majors. Daily ZAR volume is a fraction of EUR/USD volume.
- Higher intraday volatility. ZAR moves on global risk sentiment, SARB decisions, commodity prices, and domestic news. More moving parts mean more risk for the broker, which means wider quoted spread.
- Local broker pricing. Some brokers offer competitive USD/ZAR spreads to attract South African clients. Others mark them up significantly. The difference between brokers can be 50 pips or more on the same pair.
Three practical adjustments for South African traders:
- Compare USD/ZAR spreads broker-by-broker before you open an account. The headline EUR/USD spread is irrelevant if you mostly trade USD/ZAR. See our directory of forex brokers in South Africa.
- Trade during the London to New York overlap (14:00 to 18:00 SAST). USD/ZAR liquidity is deepest then, and spreads tend to tighten.
- Consider a ZAR-denominated account with an FSCA-regulated broker. It reduces conversion costs on every trade, even if the spread itself does not change.
For the tax angle on profits from local forex trading, our guide on the tax implications for South African forex traders covers what SARS expects.
How to Manage Spread Costs Like a Pro
Spread is not random. It responds to predictable conditions. Five habits cut it down for every trade you place:
- Pick your broker for spread, not for bonus. A deposit bonus is paid once. Spread is paid every trade for the life of the account. Choose accordingly. Start with our forex brokers in South Africa shortlist.
- Trade liquid pairs during liquid hours. EUR/USD at 15:00 SAST is the cheapest combination in the market. EUR/USD at 03:00 SAST is the same pair at double the spread.
- Avoid scheduled news releases unless you have a specific edge. Even a single 10-pip spread spike erases the cost saving on twenty calm trades.
- Match lot size to spread cost. If your typical trade target is 30 pips, a 5-pip spread is 17% of your potential move. That is too high. Either trade a tighter-spread pair or a larger target.
- Track your spread cost monthly. Most platforms show it in the trade history. Add it up. Compare it to your gross P&L. If spread is more than 20% of gross P&L, the broker or the strategy needs to change.
Spread management is unglamorous but it compounds. A trader who saves 1 pip per trade across 500 trades saves 500 pips. On a standard lot, that is $5,000. The math is plain.
Trading Terms You’ll See Here
-
Spread
The price difference between the bid (sell) and ask (buy) quotes of a currency pair, measured in pips. The primary cost of every forex trade.
-
Bid Price
The price at which a broker is willing to buy a currency pair from you. This is the price you receive when selling.
-
Ask Price
The price at which a broker is willing to sell a currency pair to you. This is the price you pay when buying.
-
Pip
The smallest standard unit of price movement in a currency pair. Equal to 0.0001 for most pairs and 0.01 for JPY pairs.
-
Lot
The standardised trade-size unit in forex. A standard lot is 100,000 units of the base currency; a mini lot is 10,000; a micro lot is 1,000.
The Hidden Cost That Decides Your Edge
Most traders obsess over the entry. The professionals obsess over the cost of getting in.
Spread is the most consistent cost you will face in forex. It is paid on every trade, every day, regardless of whether the trade wins or loses. Two traders running the same strategy can end the year in very different places purely because one paid 1.5 pips per trade and the other paid 0.6.
If you have been trading for a year and have not measured your total spread cost, do it this week. Compare it to your gross profit. The number will probably surprise you.
The real question is not whether spread matters. It is whether you have ever counted what it has actually cost you.
Key Takeaways: What Is Spread in Forex
- Definition: The spread is the gap between the bid (sell) and ask (buy) price of a currency pair, measured in pips.
- Formula: Spread = Ask − Bid. On EUR/USD at 1.1053 / 1.1055, the spread is 2 pips.
- Cost scales with lot size: A 2-pip spread on a standard lot costs ~$20. On a micro lot, ~$0.20.
- Fixed vs variable: Fixed spreads are predictable; variable spreads are tighter on average but spike on news.
- Pair tiers: Majors 0.5–1.5 pips. Minors 1.5–3 pips. Exotics 5–50+ pips. USD/ZAR 50–150 pips.
- News widens spreads: NFP, CPI, and central bank decisions can multiply spreads ten-fold for minutes.
- For SA traders: Compare USD/ZAR spreads broker-by-broker. Trade during the London–NY overlap. Consider a ZAR account.
- Track it: Total monthly spread cost should not exceed 20% of gross P&L.