Fixed forex spreads keep the gap between the bid and ask at a stated width under the account’s terms. Variable spreads, also called floating spreads, change as pricing conditions change. Fixed pricing makes the spread component easier to budget; variable pricing can offer a lower cost, but that cost is less predictable.
Neither model is automatically cheaper, and neither guarantees the price at which an order will execute. The useful comparison is what you pay for your currency pair, position size and trading hours. If you need a refresher on the quote itself, start with how forex spreads work.
Fixed vs Variable Forex Spreads: The Main Differences
The distinction concerns the width of the quote, not whether the exchange rate moves. A fixed spread can remain two pips wide while both the bid and ask move sharply. A variable spread allows that gap to change too.
| Feature | Fixed spread | Variable spread |
|---|---|---|
| Quoted width | Stated width, subject to the published terms and schedule | Changes with the provider’s pricing conditions |
| Cost planning | Easier to estimate the spread component | Requires an allowance for changing spreads |
| Possible advantage | More predictable quoted costs | Tighter quotes when conditions allow |
| Main concern | Paying more for predictability or overlooking exceptions | Wider spreads at inconvenient moments |
| Execution guarantee | Not established by the spread label | Not established by the spread label |
How Fixed Forex Spreads Work
Suppose a fixed spread account quotes EUR/USD at a bid of 1.1000 and an ask of 1.1002. The spread is two pips. Later, the quote moves to 1.1050 and 1.1052. The exchange rate has changed, but the spread remains two pips.
This consistency removes one moving part from cost planning. You can estimate the spread expense before a session without guessing whether the next quote will be narrower or wider.
However, read “fixed” alongside the spread schedule. Published offers can use a different rate during daily rollover, so fixed pricing may mean a stated schedule rather than one number around the clock. Check the account, platform and instrument covered by the offer, not just the advertising headline. DayTrading.com’s fixed spread comparison includes examples of scheduled rollover differences.
The economic tradeoff is straightforward: a predictable spread may cost more than a variable quote available at the same moment. Paying two pips when another account offers an equivalent cost of one pip buys consistency, but that consistency has a price.
A fixed spread also does not freeze the exchange rate while your order travels to the platform. Both sides of the quote can move together and preserve the same gap. Stable spacing between prices is not the same as a stable execution price.
How Variable Forex Spreads Work
A variable spread changes rather than following a constant width. A hypothetical EUR/USD quote might show a 0.6 pip spread at one moment and 1.4 pips later. Those figures illustrate the mechanism; they are not current market quotes or promised trading conditions.
Liquidity matters because a quote depends partly on the prices and quantities available to trade. When liquidity deteriorates, keeping a narrow quote can become harder. Research on foreign exchange liquidity from the Bank for International Settlements documents how liquidity can weaken during market stress. That does not mean every increase in volatility produces the same spread response.
The practical issue is timing. A low spread observed during a quiet price check says little about the cost available when your strategy sends an order. News releases, changes in trading activity and the provider’s pricing arrangements can produce a different quote.
Measure spreads during the hours you actually trade. Comparing an account at lunchtime with another during an economic release is not a fair test. The relationship between timing and quote conditions is covered in how trading sessions affect forex spreads.
Compare Costs in Money, Not Just Pips
A spread comparison becomes useful when you include commission and convert both accounts to the same cash basis. “Two pips versus 0.6 pips” is incomplete if the narrower account charges a separate commission.
Consider a hypothetical trade of 100,000 euros in EUR/USD, with a US dollar account. One pip is worth $10 for this position. Assume the midpoint returns to its starting level, each quoted spread applies at both entry and exit, and there is no slippage or overnight financing.
A fixed spread of two pips produces a $20 spread cost. A variable spread of 0.6 pips produces a $6 spread cost. If the variable account also charges $3.50 per side, its $7 commission brings the combined cost to $13.
Under those assumptions, the variable account costs $7 less. If its spread were three pips at both entry and exit, the combined cost would instead be $37. The fixed account would then be cheaper, provided its two pip terms still applied.
Commission and spread are separate charges, and an account can charge both. “Commission free” does not mean trading is free: compensation may be built into the quote. The SEC’s foreign currency transaction guidance addresses this distinction and the effect transaction costs can have on trading results.
Do not automatically count one full spread at entry and another full spread at exit. With an unchanged quote, buying at the ask and immediately selling at the bid loses one spread. When entry and exit spreads differ, calculate the result from the actual prices rather than applying a shortcut.
For other position sizes and account currencies, use the method in calculating forex spread costs in pips and money. A comparison should use the same trade size on both accounts; otherwise, the cash figures tell you more about position sizing than pricing.
Fixed vs Variable Is Not the Same as Raw vs Standard
These labels answer different questions. Fixed versus variable describes whether the spread width changes. Raw versus standard concerns how the account packages its pricing, including any separate commission.
A standard account should not be assumed to have fixed spreads. Nor should “raw” be treated as a promise of a zero spread or the lowest total expense. Check the actual quote and fee schedule.
Keep the comparisons separate: establish how the spread behaves, then establish what else the account charges. The distinction between raw spread and standard trading accounts deserves its own comparison rather than being folded into the fixed spread debate.
A Fixed Spread Does Not Guarantee a Fill
Spread and execution quality are related costs, but they are not interchangeable. An account can display a narrow spread while an order executes at a different price from the one visible when it was submitted.
A requote asks the trader to accept a revised price. Slippage concerns a price change during the execution process. Neither should be treated as a problem exclusive to one spread model. For US Forex Dealer Members, NFA’s requirements for forex transactions address slippage policies, requoting and the consistent treatment of market movements.
Suppose an account maintains a two pip spread, but both its bid and ask move before your buy order arrives. The spread can remain fixed even though the available purchase price has changed. There is no contradiction: the gap stayed constant, the market did not.
For an open position, changing quotes also affect the price available to close it. A widening spread can make the displayed result worse even without an adverse midpoint move. Check which side of the quote triggers each order rather than relying on a chart alone.
When assessing results, record quoted spread and execution price separately. That prevents a pricing problem from being mistaken for an execution problem, or vice versa. The distinction is developed in spread versus slippage.
Which Spread Model Fits Different Trading Styles?
Frequent Trading With Small Price Targets
For a strategy targeting small moves, modest cost differences deserve close attention. A one pip difference takes a larger share of a five pip target than a fifty pip target.
Variable spreads may be attractive if their combined spread and commission expense stays below the fixed alternative during the strategy’s trading window. But compare completed trades, not the narrowest quote you can find. A brief low spread does not establish a usable average.
Trading Around Economic Releases
Fixed pricing may appeal when spread predictability matters more than obtaining the narrowest quiet market quote. The decision still depends on whether the published terms apply during the event and how orders are handled.
Do not treat fixed spreads as permission to ignore execution risk. A stable gap cannot prevent a currency from jumping. Equally, do not assume a variable account will become uneconomic at every announcement; assess the conditions your orders actually face.
Holding Positions Overnight
For longer holding periods, compare financing charges alongside entry and exit expenses. A saving on the spread may be outweighed by the cost of maintaining the position.
Spread predictability remains useful, particularly when a position must be closed at an awkward time. But choosing an account solely because its spread is fixed leaves part of the bill unread.
How to Compare Fixed and Variable Accounts Fairly
Start with the same currency pair, position size, order type and trading window. Record several sessions rather than choosing one convenient screenshot. Include the conditions in which your strategy is expected to operate, not just calm periods.
Use both a typical cost and a stressed cost. An average helps estimate routine expense; a record of wider spreads helps test whether the strategy can tolerate less favorable conditions. A minimum spread is not an average, and an average is not a ceiling.
A short comparison sheet should record:
- The spread when the order is submitted and the execution price received.
- Commission for opening and closing the position.
- Any fixed spread schedule changes or exceptions.
- Financing charges if positions remain open overnight.
- Requotes, rejected orders and other execution outcomes.
For backtesting, avoid applying an unrealistically narrow constant spread to a strategy intended for variable pricing. Test a range of costs and check whether the apparent advantage survives. Demo results can help assess workflow, but do not treat them alone as proof of live execution quality.
Provider checks come before small pricing differences. US readers considering retail OTC forex should verify the dealer’s registration and disciplinary history before depositing funds. The CFTC’s advisory on checks before trading forex also explains the dealer’s role as the customer’s counterparty. A cheap quote is not a substitute for checking who holds the account.
Choose on Measured Cost and Usable Terms
Choose fixed spreads when the stated terms provide useful cost predictability at a price your strategy can justify. Choose variable spreads when their measured combined costs are lower and you can tolerate changes during your trading hours.
If the comparison is close, examine execution records, financing and account terms rather than hunting for another decimal place in an advertised spread. Neither pricing model makes a weak strategy profitable or removes the risk of margin trading. The better account is the one whose costs and conditions you can evaluate before committing money.