Two established retail forex brokers face off on regulation, costs, and platform choice. The axis of tension centers on platform availability and pricing structures.
CMC Markets and Interactive Brokers are closely matched overall. The clearest differentiator is MT4/MT5 availability, with CMC Markets offering MT4/MT5 while Interactive Brokers does not.
Find out which broker best suits your trader profile.
Choose CMC Markets if…
Choose CMC Markets if you value 24/5 live chat support and MT4/MT5 availability.
Choose Interactive Brokers if…
Choose Interactive Brokers if you prioritize the lowest margin rates and access to 17000 instruments.
Which broker wins for each type of trader, based on costs, safety, platforms, and editorial scoring.
Interactive Brokers offers tighter spreads from 0.20 pips vs 0.70 pips for CMC Markets, reducing trading costs.
| Editorial score | 4.5/ 5 | 4.6/ 5 |
|---|---|---|
| Score Breakdown | ||
Trust & Regulation 40% weight | 4.6 / 5 | 4.8 / 5▲ |
Pros
FCA-regulated, LSE-listed
Excellent proprietary platform
MT4 also available
Client funds held in segregated accounts
Negative balance protection
Investor compensation scheme coverage
A closer look at the specific criteria each broker meets or misses within each scoring category.
| Criteria | CMC Markets | Interactive Brokers |
|---|---|---|
| Trust & Regulation | ||
| Top-tier regulator (FCA, ASIC, CFTC, etc.) | Pass | Pass |
| Segregated client funds | Pass | Pass |
| Negative balance protection | Pass | Pass |
| Compensation scheme (e.g. FSCS) | Pass | Pass |
| Fees & Spreads | ||
| Raw/ECN spreads available | Fail | Pass |
| No deposit fee | Pass | Pass |
| No inactivity fee | Fail | Pass |
| Transparent pricing page | Pass | Pass |
| Platforms & Tools | ||
| MT4/MT5 available | Pass | Fail |
| Proprietary platform | Pass | Pass |
| Mobile app | Pass | Pass |
| Advanced charting tools | Pass | Pass |
| Customer Support | ||
| 24/5 live chat | Pass | Fail |
| Phone support | Pass | Pass |
| Multilingual support | Pass | Pass |
The scores are close: CMC Markets rates 4.5/5 and Interactive Brokers rates 4.6/5. Interactive Brokers has a marginal edge in our scoring, but the difference is small enough that your specific priorities — fees, platforms, or regulatory jurisdiction — should guide the final choice.
Interactive Brokers starts from 0.2 pips, tighter than CMC Markets's 0.7 pips. Tighter spreads lower the cost per trade, which matters most for high-frequency and scalping strategies.
Neither CMC Markets nor Interactive Brokers requires a minimum deposit, making both accessible regardless of starting capital.
Both CMC Markets and Interactive Brokers hold licences from top-tier regulators, indicating a high standard of regulatory oversight. Check each broker's specific regulatory bodies to confirm coverage in your jurisdiction.
For beginners, both brokers provide negative balance protection. Also compare demo account availability and educational resources on each broker's site before deciding.
CMC Markets lists maximum leverage of 30:1, while Interactive Brokers lists up to 50:1. Available leverage depends on your jurisdiction. EU retail clients under ESMA rules are capped at 1:30 on major forex pairs.
Interactive Brokers charges $2 per lot on commission-based accounts. Commission details for CMC Markets are not currently available. Check their website for up-to-date pricing.
CMC Markets supports ProRealTime, Proprietary Web/Mobile, MetaTrader 4, while Interactive Brokers supports Trader Workstation (TWS), Proprietary Web/Mobile. Both provide Proprietary Web/Mobile. CMC Markets has exclusive access to ProRealTime and MetaTrader 4. Interactive Brokers has exclusive access to Trader Workstation (TWS).
Interactive Brokers wins safety & regulation due to a broader regulator roster.
Interactive Brokers wins for active traders thanks to low margin rates and broad access.
Interactive Brokers is better suited for scalpers: raw/ECN spreads available, tighter spreads from 0.20 pips.
Interactive Brokers wins for platform choice with Trader Workstation and web/mobile tools.
CMC Markets wins for beginners due to MT4 support and easier entry.
Interactive Brokers wins for instrument variety with 17000 instruments.
Fees & Spreads 30% weight | 4.4 / 5 | 4.6 / 5▲ |
|---|
Platforms & Tools 20% weight | 4.5 / 5 | 4.6 / 5▲ |
|---|
Customer Support 10% weight | 4.2 / 5▲ | 4.0 / 5 |
|---|
| Founded | 1989 | 1978 |
|---|
| Headquarters | London, United Kingdom | Greenwich, United States |
|---|
| Min Deposit | No minimum | No minimum |
|---|
| Spreads From | 0.7 pips | 0.2 pips▼ lower |
|---|
| Commission / lot | N/A | $2/lot |
|---|
| N/A | 0.4 pips |
| Max Leverage | 30:1 | 50:1▲ higher |
|---|
| Inactivity Fee | £10/month (after 12 months) | None |
|---|
| Deposit Fee | Free | Free |
|---|
| Deposit methods | Bank transferCredit cardDebit card | Bank transferACH |
|---|
| Withdrawal methods | Bank transferCredit card | Bank transferACH |
|---|
| Withdrawal Fee | Free | First withdrawal/month free |
|---|
| Regulators | FCA ASIC DFSA FMA BaFin | FCA ASIC JFSA IIROC DFSA CNB CMVM CNV AMF SEC MFSA SFC SEBI CBI CMF NFA FSC FINRA |
|---|
| Platforms | ProRealTime Proprietary Web/Mobile MetaTrader 4 | Trader Workstation (TWS) Proprietary Web/Mobile |
|---|
| Active bonuses |
|---|
No deposit fees
MetaTrader 4 and MetaTrader 5 supported
Mobile trading app available
Advanced charting tools included
Transparent pricing with clear cost disclosure
24/5 live chat support
Phone support available
Multilingual customer support
Pros
Available to US residents
Lowest margin rates in industry
150+ global markets
Regulated by top-tier authorities (FCA, ASIC, CySEC)
Client funds held in segregated accounts
Negative balance protection
Investor compensation scheme coverage
Raw spread account available
No deposit fees
No inactivity fee
Mobile trading app available
Proprietary trading platform available
Advanced charting tools included
Transparent pricing with clear cost disclosure
Phone support available
Multilingual customer support
Cons
Inactivity fee after 12 months
No raw spread account option
Cons
Steeper learning curve on TWS
No MT4 / MT5
No MetaTrader support
No 24/5 live chat
Dig deeper into each broker’s features, fees, and regulation.
Score 4.5 / 5
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