IC Markets Raw Spread accounts show a structural divergence between cTrader and MT4/MT5 platforms in April 2026 that the broker's marketing materials gloss over: cTrader Raw averages 0.02 pips on EUR/USD during peak London-New York liquidity overlap, while MT4 Raw and MT5 Raw average 0.72 pips on the same currency pair, drawing on identical underlying liquidity providers. The 70-basis-point gap is not a measurement artifact or a temporary execution-quality issue. It reflects platform-architecture differences that translate directly into trader-side cost, with the cTrader user paying approximately one-tenth the spread cost on EUR/USD during calm market conditions. ForexBrokers.com's 2026 broker rankings flag the divergence; the broker's own marketing pages do not. The economics matter materially for high-volume traders: a 100,000 EUR/USD lot costs approximately $0.20 in spread on cTrader Raw versus $7.20 on MT4/MT5 Raw, before considering the $7.00 round-trip commission that applies to both platforms identically.
This piece walks through the structural causes of the divergence, the broker-side architecture that produces it, the trader-side implications across volume tiers, and three reads on what the cTrader-MT4-MT5 gap signals for retail forex execution in 2026.
The Structural Causes of the Divergence
The gap between cTrader 0.02 pips and MT4/MT5 0.72 pips reflects three architectural factors.
Factor 1 — Aggregation and routing: cTrader uses Spotware's native ECN aggregation that connects directly to IC Markets' tier-1 liquidity providers (LPs) — typically major prime brokers and bank LPs. MT4 and MT5, designed for retail-broker market-making models, route through bridge software (cTrader Bridge, MT5 Gateway) that adds one layer of abstraction. The bridge layer can introduce micro-second-level spread widening as quotes are reconstructed for the MT4/MT5 protocol.
Factor 2 — Quote refresh frequency: cTrader receives and displays quote updates at sub-100ms intervals natively. MT4's quote refresh architecture, designed in 2005, processes quotes at coarser intervals. Even with high-frequency-data add-ons, MT4's effective refresh rate during fast markets is below cTrader's. The slower refresh produces conservative quote display where the broker shows a wider bid-ask to absorb intra-tick movements.
Factor 3 — Broker risk management: IC Markets, like most ECN brokers, retains some pricing discretion at the platform level. cTrader's transparency makes aggressive markup harder to disguise; MT4/MT5's quote-display flexibility lets the broker apply slightly wider spreads on average without obvious detection. The 70-basis-point average gap on EUR/USD reflects the cumulative effect of platform-specific markup discretion.
The Broker-Side Architecture Comparison
| Element | IC Markets cTrader Raw | IC Markets MT4 Raw | IC Markets MT5 Raw |
|---|---|---|---|
| EUR/USD avg spread (April 2026 calm) | 0.02 pips | 0.72 pips | 0.72 pips |
| Round-trip commission per 100k lot | $6.00 minimum | $7.00 minimum | $7.00 minimum |
| Effective all-in cost (100k EUR/USD) | $0.20 + $6.00 = $6.20 | $7.20 + $7.00 = $14.20 | $7.20 + $7.00 = $14.20 |
| Quote source | Native ECN aggregation | MT4 Bridge | MT5 Gateway |
| Quote refresh frequency | <100ms | ~250-500ms typical | ~100-250ms typical |
| Order routing model | DMA-style | STP through bridge | STP through bridge |
| Slippage on market orders | Lower (typical 0.0-0.2 pips) | Moderate (typical 0.2-0.8 pips) | Moderate (typical 0.2-0.8 pips) |
| One-click trading | Yes | Yes (via plugin) | Yes (native) |
| Platform learning curve | Lower (modern UX) | Higher (legacy UX) | Moderate |
The all-in cost differential of roughly 2.3x between cTrader and MT4/MT5 on a single 100k lot is significant. For a trader executing 50 round-trip lots per month, the monthly cost difference reaches approximately $400 — material for an active trader's P&L.
The Trader-Side Implications Across Volume Tiers
Low-volume tier (0-10 lots/month): the absolute cost differential is small (~$80/month at 10 lots) but the percentage difference is substantial. For a trader with limited monthly volume, the platform choice still matters but doesn't dominate the trading economics. Beginner traders may prioritize MT4 familiarity over the cost saving.
Medium-volume tier (10-50 lots/month): the cost differential reaches $80-400/month. At this tier, the platform choice begins to dominate the retail trading-cost calculus. cTrader becomes the obvious choice unless the trader has a specific reason to use MT4/MT5 (Expert Advisor compatibility, specific indicator availability, broker requirement).
High-volume tier (50+ lots/month): the cost differential reaches $400+/month. At professional volume, the platform-cost gap overshadows other broker-selection factors. cTrader is structurally cheaper on IC Markets Raw at any meaningful volume.
Algorithmic-trading tier: traders running EAs may have legacy MT4/MT5 dependencies that lock them into the higher-cost platform. The cost of porting EAs to cTrader's automation framework (cAlgo) versus the spread-cost differential becomes the ROI calculation.
How the IC Markets Divergence Compares with Pepperstone, OANDA, Tradu
| Broker / Platform | EUR/USD Raw Spread (April 2026) | Round-Trip Commission | All-in Cost (100k lot) |
|---|---|---|---|
| IC Markets cTrader Raw | 0.02 pips | $6.00 | $6.20 |
| IC Markets MT4/MT5 Raw | 0.72 pips | $7.00 | $14.20 |
| Pepperstone Razor (cTrader/MT4/MT5) | 0.10 pips average | $7.00 | $8.00 |
| OANDA Standard | 0.8 pips | $0 (no commission) | $8.00 |
| Tradu (challenger) | Lowest avg per FXStreet 2026 | $0 (spread-only model) | Variable |
| FXTM ECN | 0.0-0.2 pips | $4.00-7.00 | $4.00-9.00 |
The IC Markets cTrader $6.20 all-in cost on EUR/USD is among the lowest available globally. The IC Markets MT4/MT5 $14.20 all-in cost is competitive but materially higher than Pepperstone's $8.00 Razor pricing. For a trader committed to MT4 and IC Markets, switching to Pepperstone Razor saves approximately $6.20 per 100k lot — substantial for active traders.
What the Gap Tells Us About Retail Forex Execution
First, platform choice within the same broker can dominate the broker-choice decision for cost-sensitive traders. The intuition that "broker brand determines cost" misses the platform-architecture-within-broker variable.
Second, MT4 specifically remains a legacy platform with structural cost disadvantages that are not improving over time. Brokers maintain MT4 because of trader inertia and EA ecosystem, not because the platform is competitive on execution. Migration to cTrader or MT5 is the structural trend among cost-conscious traders.
Third, the broker-side discretion in MT4/MT5 quote markup is a structural feature, not a bug. Traders who accept MT4 are implicitly accepting wider spreads as the cost of platform familiarity. The trade-off is rational for some traders and irrational for others — the explicit awareness of the trade-off is what matters.
What This Desk Tracks Through Q2-Q3 2026
For the IC Markets platform divergence and the broader retail forex execution evolution, three datapoints define the trajectory.
First, the IC Markets-Pepperstone-OANDA spread evolution across 2026. Continued tightening of cTrader Raw spreads (the floor is approaching 0.0 pips) reduces the broker's revenue per lot and may force pricing-model adjustments.
Second, MT4 platform deprecation timeline. MetaQuotes' formal end-of-life support for MT4 affects broker willingness to maintain MT4 alongside MT5. As MT4 support fades, the platform-cost differential may narrow as MT4 becomes purely legacy.
Third, ESMA leverage and execution-quality regulations. Further leverage cuts (prospective 20:1 or 10:1) and execution-quality reporting requirements would reshape the broker pricing landscape, potentially reducing differentiation between platforms.
Honest Limits
The 0.02 pips and 0.72 pips averages are typical calm-market values; specific spreads vary continuously with liquidity conditions, news events, and time of day. The all-in cost figures assume calm-market conditions and round-lot transactions; small-lot or high-volatility transactions produce different effective costs. The structural-cause analysis reflects industry-observable patterns, not IC Markets internal architecture documents. This piece is not investment or broker-selection advice; traders with specific exposure should evaluate brokers based on their full requirement set including execution quality, regulation, and platform features.
Sources
- Pepperstone vs IC Markets 2026 — ForexBrokers.com
- IC Markets vs OANDA Broker Comparison 2026 — CompareForexBrokers
- Lowest Spread Forex Brokers 2026 — BrokerChooser
- IC Markets Spread Pricing — IC Markets
- Pepperstone Review 2026 — ForexBrokers.com
- Forex Brokers with Lowest Spreads 2026 — NewYorkCityServers
- Forex Spread Comparison — Myfxbook