- Good Money Guide experts rate the CMC Invest Junior Cash ISA highly, noting its competitive variable interest rate of 3.56% AER and tax-free profits as key advantages. However, they caution that the money is locked away until the child turns 18 and suggest that investing in a junior stocks and shares ISA may yield better returns over time.
- Across 237 user reviews on Good Money Guide, averaging 4.2/5, customers frequently commend the platform's user-friendly interface, efficient customer service, and competitive pricing. Many users highlight the reliability and speed of trade execution, while some suggest improvements to the mobile app's functionality.
CMC Invest Junior Cash 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 Junior Cash ISA across three key areas of our review framework.
- Rates5.0
- App & Platform5.0
- Customer Service5.0
Pros
- Tax-free profits
- Competitive rate
Cons
- Money locked away until child turns 18
- Savings may not produce as profitable returns as investing
See full expert review
Our verdict
CMC Markets has expanded its wealth offering with the launch of a new Junior Cash ISA (JISA), marking a further push beyond trading into long-term savings products for UK families.
The new account, available via CMC Invest, offers a variable interest rate of 3.56% AER, with interest paid monthly. Designed to provide a simple and tax-efficient way to save, the JISA allows parents and guardians to start building a financial nest egg for their children from as little as £1.
Is CMC Invest's Junior Cash ISA Any Good?
While the 3.56% AER rate is competitive, it remains variable, meaning returns could change over time. As with all ISAs, tax treatment depends on individual circumstances and may be subject to future rule changes.
It's also important to note that you can get better returns with a junior stocks and shares ISA (which CMC Invest also offer) as funds are invested in the stock market, as opposed to a savings account.
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
Best
Best charting platform
Best service
Excellent
Excellent interface of charts and prices and accounts on mobile phone app. Spreads are also very good
Authentic
Reliable, trustworthy, & honest.
seems trustful
i think a better user friendly mobile app well overdue
Seamless
fast execution, small spreads on major pairs, integrated for trading view.
Supportive
Clear and informative, with good history recall.
Very good trade execution
Charting studies & speed of trade execution.
Extremely helpful.
Charts are good. Easy to use platform. They leave you alone to get on with trading. They never push into putting in more more or stake higher.
Reliable
Execution
Consistent
Easy to understand platform and good charting.
Excellent
Reliable, when the market moves, yours move
Brilliant platform.
Good, clear notifications via email re; my account. A very slick & user friendly trading platform. On the odd occasion when having to contact Customer Support, friendly staff & queries/problems resolved very quickly. Would highly recommend.
Great platform
Very intuitive platform, works very well.
Reliable
Always there, always fair.
Innovative
Provides interest on uninvested cash and free access to Bloomberg
Reliable
Narrow FX spreads
Proficient
CMC provides an easy to use platform with good charts and indicators. No hidden fees and good response time when trading. I use them for spread betting, their demo account allows you to practice until you get comfortable.
Professional
Top customer service
Best
Manage very well regarding tradez
Professional
Good spreads fast operations.
CMC Invest Junior Cash ISA Alternatives
It is possible to get better returns for your child’s Junior ISA if you use a Junior Stocks and Shares ISA as opposed to a cash ISA. With a cash ISA the value of your savings can actually be worth less when you take inflation into account. By using a stocks and shares junior ISA to invest in the stock market, your child’s nest egg could be worth significantly more.
| Name | Logo | GMG Rating | Customer Reviews | JISA Annual Fees | Dealing Commission | CTA | Tag | Feature | Expand |
|---|---|---|---|---|---|---|---|---|---|
|
GMG Rating |
Customer Reviews |
JISA Annual Fees £0 |
Dealing Commission £0 |
Featured |
Features:
|
|
|||
|
GMG Rating |
Customer Reviews |
JISA Annual Fees 0.5% |
Dealing Commission £0 |
Features:
|
|
||||
|
GMG Rating |
Customer Reviews |
JISA Annual Fees £0 |
Dealing Commission £0 |
Features:
|
|
||||
|
GMG Rating |
Customer Reviews |
JISA Annual Fees £0 |
Dealing Commission £3.99 - £7.99 |
Features:
|
|
||||
|
GMG Rating |
Customer Reviews |
JISA Annual Fees 0.7% |
Dealing Commission £0 |
Features:
|
|
||||
|
GMG Rating |
Customer Reviews |
JISA Annual Fees 0.25% |
Dealing Commission £3.50 - £5 |
Features:
|
|
||||
|
GMG Rating |
Customer Reviews |
JISA Annual Fees 0.45% |
Dealing Commission £0 |
Features:
|
|
||||
|
GMG Rating |
Customer Reviews |
JISA Annual Fees 0.6% |
Dealing Commission £0 |
Features:
|
|
||||
|
GMG Rating |
Customer Reviews |
JISA Annual Fees £0 |
Dealing Commission £0 |
Features:
|
|

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.





















