- Good Money Guide experts highlight CMC Invest's Flexible ISA as a significant advantage, allowing users to withdraw and reinvest funds without penalty, which is not possible with traditional ISAs. The platform offers zero commission on trades and low foreign exchange conversion fees, although it lacks features like fractional shares and stop orders. Overall, it receives a solid rating of 4.4/5 based on criteria such as pricing and customer service.
- Across 237 user reviews on Good Money Guide, averaging 4.2/5, customers frequently commend the platform's ease of use, efficient customer service, and competitive spreads. Many users appreciate the reliability and speed of trade execution, while some suggest improvements for the mobile app's user-friendliness. Overall, the platform is viewed as trustworthy and effective for trading.
CMC Invest Stocks & Shares ISA Expert rating
Our expert rating is the average of the areas listed here, each scored out of 5 by our team.Our experts have rated CMC Invest Stocks & Shares ISA across five key areas of our review framework.
- Pricing4.5
- Market Access4.5
- Online Platform4.5
- Customer Service4.5
- Research & Analysis4.0
Pros
- Zero commission
- No custody fee for GIAs
- Low FX conversion fee of 0.5% or less
Cons
- No fractional shares
- No limit or stop orders
See full expert review
Our verdict
CMC Invest gives you a flexible stocks and shares ISA that lets you invest in major UK shares, US stocks and ETFs without having to pay commission when you deal. The flexible investment ISA is included in the Plus and Premium accounts, which also include access to UK mid-cap shares and a USD wallet.
Capital at risk
What Does CMC Invest's Flexible ISA Mean?
One of the key advantages of CMC Invest's ISA is that it's a flexible ISA, which means you can take money out, and then put it back in, which you can't do with a normal stocks and shares ISA (as it only recognises the deposits, not the withdrawals).
In a stocks and shares ISA, you can lose invested money, just as with any other investment.
Investments: Shares & ETFs
Minimum deposit: £0
ISA account charge: £6.99 (Plus) or £10.99 (Premium) per month
ISA dealing fee: £0
Fees: General investment accounts are commission and fee free. ISA accounts cost from £6.99 a month and are included in the Plus and Premium plans. For US shares there is a conversion fee of 0.5% (Plus) or 0.39% (Premium).
Customer reviews for CMC Markets
Customer ratings come from reviews left on this site. Every review is read and approved before it is published.Based on 237 reviews
- Excellent52%
- Very good22%
- Basic18%
- Poor6%
- Bad2%
Read customer reviews

Richard is the founder of the Good Money Guide (formerly Good Broker Guide), one of the original investment comparison sites established in 2015. With a career spanning two decades as a broker, he brings extensive expertise and knowledge to the financial landscape.
Having worked as a broker at Investors Intelligence and a multi-asset derivatives broker at MF Global (Man Financial), Richard has acquired substantial experience in the industry. His career began as a private client stockbroker at Walker Crips and Phillip Securities (now King and Shaxson), following internships on the NYMEX oil trading floor in New York and London IPE in 2001 and 2000.
Richard’s contributions and expertise have been recognized by respected publications such as The Sunday Times, BusinessInsider, Yahoo Finance, BusinessNews.org.uk, Master Investor, Wealth Briefing, iNews, and The FT, among many others.
Under Richard’s leadership, the Good Money Guide has evolved into a valuable destination for comprehensive information and expert guidance, specialising in trading, investment, and currency exchange. His commitment to delivering high-quality insights has solidified the Good Money Guide’s standing as a well-respected resource for both customers and industry colleagues.




