CMC Invest Cash ISA Customer Reviews & Expert Rating

The overall score out of 10 combines our expert rating out of 5 with the average customer rating out of 5.
9.2/10Excellent

Based on 237 customer reviews and our expert analysis

  • Experts rate the CMC Invest Cash ISA highly, noting its excellent 3.69% AER with tax-free interest, unlimited withdrawals, and no fees, making it a strong option for savers. The account is integrated within CMC’s broader investing platform, which is praised for its user-friendly app and robust customer service, although it is exclusively app-based and has a limited bonus period.
  • 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 highlight the reliability and speed of trade execution, while some suggest improvements for the mobile app's user interface.

CMC Invest Cash ISA Expert rating

Our expert rating is the average of the areas listed here, each scored out of 5 by our team.
5.0Excellent

Our experts have rated CMC Invest Cash ISA across five key areas of our review framework.

  • Rates5.0
  • Flexibility5.0
  • App & Platform5.0
  • Customer Service5.0
  • Research & Analysis5.0

Pros

  • Also has an investment ISA
  • Established provider
  • Excellent rates and nous

Cons

  • App-only product
  • Bonus limited to 90 days
See full expert review

Our verdict

CMC Invest’s flexible Cash ISA pays 3.69% AER (variable) with tax-free interest calculated daily and paid monthly, offering unlimited withdrawals without reducing the rate and a £1 minimum deposit to get started.

Is the CMC Invest Cash ISA any good?

Yes, we rate CMC Invest's 3.69% Flexible Cash ISA as excellent as it comes with unlimited withdrawals and no fees.

Customers can easily transfer existing ISAs in-app, benefit from FCA regulation and protection of client money, and access the account within CMC’s wider investing platform, which serves over 1.5 million global users. The ISA is fee-free to hold (with an optional £15 urgent withdrawal fee) and sits alongside CMC Invest’s subscription plans that add investing features, lower FX fees and broader market access for those using the wider platform.

Customer reviews for CMC Markets

Customer ratings come from reviews left on this site. Every review is read and approved before it is published.
4.2Very good

Based on 237 reviews

  • Excellent52%
  • Very good22%
  • Basic18%
  • Poor6%
  • Bad2%
Read customer reviews

excellent company

Hernan Botero ·

Everything, from data sharing to information sharing to ideas to trade. Really good provider. I love it.

Let not mobile app close it self

Mohamed Ali ·

You can close all your positions at one -- one click

Excellente

Ferdinand Maligsay ·

Customer service

Extremely efficient

Balogun aiye II ·

Excellent trading platform

Efficient

Adrian Akers ·

Tight spreads

Customary

Augustus Duodu ·

Available anytime you need assistance, their educational videos are explanatory

trustworthy

joe wasley ·

market price action accuracy and response, good spreads, very easy to use, quick withdraw and depositing

easy

kenny lane ·

Makes trading easy

Good

Kevin Willington ·

Everything, good customer facing service .

transparent

Kevin Spencer ·

very easy to use interface, most competitive spreads also on futures

Efficient

Terry Johnson ·

Gives in formation

Efficient

Stephen Morgan ·

Web Platform works very well

easy and clear data

Mark Lewandowski ·

Presents the information in a clear way and loads of charts and analysis tools

Don't Play games like IG Markets and other providers

Naweed Mahmood ·

CMC Markets does a number of things exceptionally well. The app is consistently reliable and always available when you need it, which is crucial in fast-moving markets.

One standout feature is how quickly prices become available. For example, when Sunday trading opens, CMC Markets provides pricing almost immediately, whereas other platforms can take several minutes before showing any market activity. That early access can make a real difference.

Another major advantage is the flexibility in position sizing. CMC allows you to take very small positions, unlike some providers that enforce larger minimum contract sizes. This gives you much better control over your risk, which is especially important when trading CFDs and other leveraged products. It makes the platform more accessible and, in my view, safer for managing exposure.

Overall, the combination of reliability, speed, and flexibility makes CMC Markets stand out from many other providers.

Very good

Abid Hussain ·

Really good

Very efficient and been using them for years

Ayodeji John Osibona ·

Customer service and execution very precise and no issues over the years , satisfied customer

Reliable

Richard Sharp ·

Ease of execution of trades. Simple to amend trades.

Excellent Service

Richard Blythin ·

Great trading platform and a wide range of products

Professional

Paul Gobin ·

I always find that CMC customer service always find a solution to any problems i have - this enhances my day to day CFD trading experience.

Excellent broker - used for 10yrs

Malte Schaft ·

I've been using CMC Markets for the last 10 years

CMC Invest continues to offer one of the best paying Cash ISA’s with a easy-access account paying 3.69% AER (variable), as investing platforms continue to compete for savers ahead of ISA season. The flexible ISA offers unlimited withdrawals, a £1 minimum deposit and no account fees, while integrating savings into CMC’s wider investing app used by more than 1.5 million customers globally.

CMC Invest Cash ISA Alternatives

You can get much better returns if you choose a stocks and shares ISA where your money is invested in the stock market.

Find the perfect stocks and shares ISA for you. Our investment ISA comparison table lets you quickly compare account fees, and show ratings from 1000s of customers.

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