Spread vs Commission in UK Trading Apps: Which One Actually Costs Less?
The Question Every UK Trader Gets Wrong
You open two accounts side by side. Platform A advertises zero commission. Platform B charges £4.50 per lot round-turn. Platform A looks cheaper before you place a single trade.
Then you check the spreads. Platform A quotes EUR/USD at 1.1 pips. Platform B quotes it at 0.1 pips. On a standard lot, that 1.0-pip difference is worth £10. The “zero commission” account just cost you more than twice as much to enter the same position. This article shows you exactly how to calculate which model costs less — for your specific trading style, asset class, and frequency. For the full ten-platform fee map, see our UK Day Trading App Cost Map 2026.
This is the spread vs commission question, and most traders answer it incorrectly because they look at one number instead of two. This article shows you exactly how to calculate which model costs less — for your specific trading style, asset class, and frequency — using verified 2026 data from FCA-regulated UK platforms.
Who wrote this and why trust it: This article is built on live testing data from October 2025 to January 2026 across major FCA-regulated UK platforms, cross-referenced against published broker fee schedules and independent trading research. No platform paid for placement. All cost calculations use publicly verifiable figures.
How Each Model Actually Works
Before comparing costs, you need to understand how each pricing model generates revenue for the broker — because that determines when each one is cheaper for you.
Spread-only pricing
The broker widens the market price by adding a markup to both the buy and sell sides. If the true interbank EUR/USD price is 1.10000/1.10001, a spread-only broker might quote it at 1.09994/1.10006 — a 1.2-pip spread. You pay this cost invisibly, embedded in every fill. There is no commission line on your statement.
The advantage is simplicity. You always know your cost before you enter: it is the spread, visible in the deal ticket. The disadvantage is that the cost is variable. Most brokers use variable spreads, which change based on market conditions. During high-impact releases such as US Non-Farm Payrolls or central bank rate decisions, spreads widen visibly in the minutes around the announcement. The cost you see in calm markets is not the cost you pay around a news event.
Commission-based (raw spread) pricing
The broker passes through the interbank price — or very close to it — and charges a separate, explicit commission per lot traded. Commission-based accounts typically offer tighter spreads, while commission-free accounts build their cost into a wider spread. Neither structure is inherently cheaper: the right choice depends on the trader’s style and volume.
The advantage is transparency: the commission is a fixed, auditable line on your statement regardless of market conditions. The disadvantage is that you must calculate the all-in cost yourself — spread plus commission — rather than reading a single number.
The Break-Even Calculation You Need to Do
The question of which model is cheaper resolves to a single mathematical comparison. Here is the formula:
Spread-only all-in cost = spread in pips × pip value
Commission-based all-in cost = (spread in pips × pip value) + commission
The commission model only wins if the tighter raw spread saves you more than the commission costs. Here is a worked example on EUR/USD for a standard lot (£100,000 notional, where 1 pip ≈ £10):
| Scenario | Spread | Commission (RT) | Total cost |
|---|---|---|---|
| Spread-only account | 1.1 pips | £0 | £11.00 |
| Raw spread account | 0.1 pips | £4.50 | £5.50 |
| Raw spread account | 0.6 pips | £4.50 | £10.50 |
| Raw spread account | 1.0 pips | £4.50 | £14.50 |
The crossover point in this example is approximately 0.65 pips on the raw spread account. If the raw spread is below that level, the commission model wins. If the raw spread is above it, the spread-only account is cheaper.
When comparing to spread-only accounts, this creates a rough break-even threshold: below 1.0 pip in total all-in cost, spread-only pricing may offer a cost advantage; around 1.0 pip, the difference is less pronounced.
The practical implication: on major pairs like EUR/USD and GBP/USD during London session hours, raw spread accounts on platforms like Pepperstone and Interactive Brokers routinely achieve total all-in costs below the spread-only benchmark. On minor pairs, off-hours sessions, and around news events, the advantage narrows or reverses.
How Trade Frequency Shifts the Maths
The break-even calculation above applies to a single trade. Across a month of trading, the frequency multiplier makes the choice dramatically more consequential.
Scalpers and high-frequency traders are the most sensitive to spread costs because they open and close positions rapidly, sometimes targeting only a few pips per trade. At 10 or 20 trades per day, a difference of 0.5 pips per trade compounds into a material cost difference over a month.
Consider a scalper executing 15 standard lots per day, 20 trading days per month — 300 lots monthly:
| Model | Per-lot cost | Monthly cost |
|---|---|---|
| Spread-only (1.1 pip EUR/USD) | £11.00 | £3,300 |
| Raw spread (0.1 pip + £4.50 RT) | £5.50 | £1,650 |
| Difference | £1,650/month |
That £1,650 monthly difference — £19,800 annually — comes entirely from the choice of pricing model, before any consideration of trading performance. For a scalper, the pricing model is not a minor detail: it is one of the most important variables in their entire strategy.
Day traders who hold positions for hours rather than minutes are less sensitive to entry spread but need to be aware of spreads widening around news events. Swing and position traders who hold trades for days or weeks are least sensitive to spread at entry — for these traders, the overnight cost (swap) often becomes a more significant cost consideration than the entry spread.
Rule of thumb by trading style:
- Fewer than 5 trades per day → spread-only model is likely simpler and adequate
- 5–15 trades per day → calculate both models for your primary instrument
- More than 15 trades per day → raw spread with commission almost certainly wins on major pairs
How Each Model Performs on UK Platforms in 2026
Spread-only platforms
Capital.com (FCA Ref: 793714) Zero commission on everything. All costs sit in the spread — EUR/USD from 0.6 pips. No deposit fees. No withdrawal fees. No inactivity fees. For moderate-frequency traders, the all-in cost on major pairs is competitive. The simplicity of a single visible cost number suits traders who are building their strategy and want predictable accounting.
CMC Markets (FCA Ref: 173730) CMC uses a primarily spread-based pricing model for forex and indices, with no commission on major pairs. In 14-week live UK testing (October 2025–January 2026), the recorded average spread on EUR/USD at 10:30 GMT was 0.7 pips. CMC also offers an FX Active account with raw spreads and commission for higher-volume traders — a useful option if you outgrow the standard model.
Spreadex (FCA authorised since 1999) Spreadex builds all costs into the spread with no separate commission. EUR/USD spreads held steady at 0.6 points during the London open in January 2026 testing — matching the advertised minimum. Spreadex also offers guaranteed stop-losses, which eliminate slippage risk entirely on fast moves — a cost benefit that does not show up in spread comparisons.
XTB (FCA Ref: 522157) EUR/USD on the Standard account averages approximately 1.0 pip — competitive but above the tightest spread-only alternatives. XTB does not offer a raw spread account for retail day traders, which is becoming increasingly common among competitors. For forex scalpers this is a significant limitation. XTB’s advantage lies in commission-free equity trading, not forex spread efficiency.
Commission-based (raw spread) platforms
Pepperstone Razor account (FCA Ref: 684312) The Razor account offers raw spreads from 0.0 pips, averaging around 0.1 pips on EUR/USD during London trading hours, with a commission of GBP 2.25 per side per standard lot. All-in cost: approximately £5.50 per standard lot. During 14-week live UK testing, Pepperstone was frequently the lowest all-in cost among tested FCA brokers for high-frequency forex traders.
Interactive Brokers (FCA Ref: 208159) IBKR passes through interbank pricing with no spread markup and charges a volume-based commission starting at $2 minimum per order ($4 round-turn). In Q3 2024, the average EUR/USD spread was 0.19 pips, for an all-in cost around 0.59 pips after commissions. The $2 minimum makes sub-standard-lot trades proportionally more expensive, but for standard-lot traders IBKR consistently delivers the lowest all-in forex cost among FCA-regulated retail platforms.
IC Markets (ECN, FCA-regulated) IC Markets lists an average EUR/USD spread of 0.02 pips on its cTrader Raw account with a commission of $3.00 per side per 100,000 units ($6 round-turn) — putting the all-in cost near 0.62 pips. Both lower than Pepperstone’s Razor at 0.80 pips. IC Markets is a strong option for scalpers who want the absolute lowest all-in cost on major forex pairs.
When Spreads Widen: The Hidden Cost of Spread-Only Accounts
The comparison above assumes normal market conditions during peak London hours. The picture changes significantly around three predictable events where spread-only accounts become materially more expensive.
1. Major economic data releases Non-Farm Payrolls, Bank of England rate decisions, and CPI prints cause immediate spread widening as liquidity providers pull back their quotes. A EUR/USD spread that sits at 0.6 pips in calm conditions can spike to 3–5 pips in the 60 seconds around a major release. On a spread-only account, you absorb this cost invisibly. On a commission account, the commission stays fixed — only the spread component varies.
2. Market open and close The first and last 15 minutes of major sessions see reduced liquidity and wider spreads. London open (8:00am UK time) is particularly notable — spreads on indices and forex pairs typically run 30–50% wider than mid-session levels.
3. Low liquidity periods Late Friday afternoons, bank holidays, and the Asian session for European pairs all produce wider spreads. Spreads widen during low liquidity periods because there are fewer buyers and sellers in the market. The best way to avoid this is to trade during peak market hours — London and New York overlap offers the tightest spreads.
Fixed vs Variable Spreads: A Third Consideration
Some UK platforms offer fixed spreads — a spread that does not widen during volatility. Fixed-spread accounts offer predictable pricing ideal for algorithmic or high-frequency traders, while variable spreads may save money in calm markets but widen dramatically during volatility spikes. FCA-regulated retail accounts include mandatory negative balance protection, meaning your account cannot go below zero.
Fixed spreads are typically wider than variable spreads during normal conditions — you pay a premium for the predictability. Trade Nation is the main UK FCA-regulated example of a fixed spread model. For traders who specifically trade around news events and need to know their exact entry cost before placing the order, fixed spreads eliminate an important variable. For traders who avoid news events and trade during peak liquidity hours, variable spread accounts with tight averages will generally be cheaper.
Asset Class Matters: Forex vs Equities vs Indices
The spread vs commission comparison does not produce the same result across all asset classes.
Forex (major pairs): Commission-based raw spread accounts win for active traders on EUR/USD, GBP/USD, and USD/JPY. The liquidity in these markets is deep enough that raw spreads are reliably tight during London and New York sessions.
Equity CFDs and share dealing: The model depends on the platform. Interactive Brokers charges £3 per trade on UK shares up to £6,000, then 0.05% above that. Shares and ETFs are priced at £3 per trade up to £6,000, and 0.05% above that, keeping fees competitive even as position sizes grow. XTB offers zero commission on stocks and ETFs up to €100,000 monthly volume. For equity traders within that threshold, XTB’s spread-only model is effectively the cheapest because the “commission” is zero and the spread on listed equities is the exchange bid-offer, not a broker markup.
The Real-World Decision Framework
After reviewing the data, here is a practical framework for choosing between the two models based on your actual trading behaviour.
Choose spread-only if:
- You trade fewer than five times per day
- You trade equities within a platform’s commission-free monthly threshold
- You prefer a single visible cost number per trade
- You use spread betting for the CGT exemption and want a simple, transparent cost structure
- You are building a strategy and want to avoid variable commission calculations in your trade records
Choose commission-based raw spread if:
- You trade more than ten times per day on major forex pairs
- You are a scalper targeting moves of 5–15 pips where entry cost is a primary strategy variable
- You want cost predictability around news events (fixed commission, variable but low raw spread)
- You use algorithmic or automated trading where cost-per-lot must be known in advance
- You run a high-frequency algo trading program based on technical indicators, which can perform better on low or zero spread accounts even with added commission
Side-by-Side Platform Comparison: Spread vs Commission Models
| Platform | Model | EUR/USD all-in | Best for |
|---|---|---|---|
| Pepperstone Razor | Commission + raw spread | ~£5.50/lot | Active forex, scalpers |
| Interactive Brokers | Commission + interbank | ~£5.05/lot | Equities + forex, pros |
| IC Markets Raw | Commission + raw spread | ~£6.20/lot | Scalpers, algo traders |
| Capital.com | Spread-only | ~£6.50/lot | Beginners, moderate frequency |
| IG Markets | Spread-only | ~£6.00/lot | Broad market access |
| CMC Markets | Spread-only (FX Active option) | ~£7.00/lot | Large instrument range |
| XTB Standard | Spread-only | ~£10.00/lot forex | Equity traders (free up to limit) |
| Spreadex | Spread-only | ~£6.00/lot | Reliable fills, spread betting |
Frequently Asked Questions
Is spread or commission cheaper for day trading in the UK?
For active day traders on major forex pairs executing more than ten trades per day, a commission-based raw spread account is typically cheaper. Pepperstone’s Razor account and Interactive Brokers deliver all-in EUR/USD costs of £5.05–£5.50 per standard lot, compared to £6.00–£11.00 on spread-only accounts. For traders executing fewer than five trades per day, the difference is smaller and a spread-only account may be simpler to manage.
What is a raw spread account?
A raw spread account passes the interbank price to you with minimal or no markup and charges a separate commission per lot. The commission is typically £2.25–£4.50 round-turn per standard lot. The total cost is the raw spread plus the commission. On major pairs during peak hours, this combination is consistently cheaper than spread-only accounts for high-frequency traders.
Do UK trading platforms have to show their full fees?
FCA-regulated platforms are required to provide a Key Information Document (KID) and disclose all material costs to retail clients. However, the disclosure format does not always make total cost-per-trade easy to calculate. Always verify the spread, commission, overnight financing rate, and any ancillary fees independently from the broker’s published fee schedule on their FCA-registered documentation.
Is there a spread on spread betting?
Yes. Spread betting uses the same spread-based cost structure as CFDs. The difference is tax treatment, not pricing mechanics. Spread betting profits are exempt from Capital Gains Tax and Stamp Duty in the UK. The spread you pay on a spread bet is economically identical to the spread on a CFD on the same instrument — the tax wrapper changes, not the cost of entry.
Can I switch between spread-only and commission accounts on the same platform?
On most major UK platforms, yes. Pepperstone lets you hold both a Standard (spread-only) and a Razor (commission) account simultaneously. CMC Markets offers its standard spread-only account alongside the FX Active commission option. You can use each account type for different instruments or strategies — for example, using a raw spread account for forex scalping and a spread-only account for occasional index positions.
