We’ve identified the best
* Wondering whether we get paid for writing good things about platforms? Good question! It’s how many comparison sites get paid.
The answer is – no, we proudly do things a little differently at Investing Insiders. Our sole criteria is what’s best for you – the consumer. So, although we do receive a commission if you choose to click through and open an account from any of our reviews, we will never bend our opinions to suit the requests of providers, or the needs of our bank balance. Bottom line – what you read on this page is what I’d recommend to my family, friends and colleagues, and what I choose for my own money.
4/5
Plum – 4.37% AER (variable), falling to 3.04% AER after first 12 months
Automated saving and investing
Capital at risk.
4.5/5
Moneybox – 4.30% AER (variable) including a bonus rate of 0.60% for the first 12 months (variable)
Easy-to-use app
Capital at risk.
5.0/5
Tembo Money – 4.27% AER (fixed)
High rates of interest paid on savings accounts
Fixed-rate and variable-rate Cash ISAs available, plus Stocks and Shares LISA and Cash LISA.
Capital at risk
4.5/5
Chip – 4.20% AER (variable) including 12 month promotional boost of 1.16% AER
Flexible
Withdraw or deposit as many times as you like
Capital at risk.
4.5/5
Natwest – 4.20% AER (fixed for 1-year)
Great rate for a fixed Cash ISA.
Well-known high street brand.
Capital at risk.
5.0/5
Tembo Money – 4.10% AER (variable)
High rates of interest paid on savings accounts
Fixed-rate and variable-rate Cash ISAs available, plus Stocks and Shares LISA and Cash LISA.
Capital at risk
4/5
CMC Invest – 3.95% AER (variable)
Flexible ISA
No penalties for withdrawing cash
Exceptionally high rate of interest
Investments involve risks and are not suitable for all investors. CFDs are complex instruments and come with a high risk of losing money rapidly due to leverage. 61% of retail investor accounts lose money when trading CFDs with this provider.
5.0/5
Virgin Money – The 1-Year Fixed Rate Cash E-ISA is paying 4.16% AER (variable)
Large range of cash savings accounts
4.16% AER (variable) interest rate on Cash ISA
Capital at risk.
4.5/5
Trading 212 – 3.85% AER
Unlimited, penalty-free access to cash
Flexible
When investing, your capital is at risk and you may get back less than invested. Past performance doesn’t guarantee future results
4.5/5
Marcus by Goldman Sachs – 4.01% AER (variable), falling to 3.50% AER after 12 months
4/5
– 4.37% AER (variable), falling to 3.04% AER after first 12 months
Automated saving and investing
Capital at risk.
This is a fantastic rate if you’re a new customer and can therefore get the bonus rate. It’ll only last for 12 months, but shopping around, and regularly switching accounts is a good habit to get into when there’s a rates war going on!
I’ve had an account with Plum since 2021 and can confirm that it is a very convenient, helpful way to save money. If you choose to use the smart features, the algorithm analyses your income and expenditure in order to put aside small amounts that you can afford, and will barely notice.
Fees
Zero to pay for the cash ISA.
Read Antonia’s full review of Plum
Read full review4.5/5
– 4.30% AER (variable) including a bonus rate of 0.60% for the first 12 months (variable)
Easy-to-use app
Capital at risk.
We talk about Moneybox a lot at Investing Insiders as our analysis has shown that they are a great place for beginners to start investing.
They now also take the crown for having one of the highest interest rates on a Cash ISA in the UK market, currently an exceptional 4.30% AER (variable) including a bonus rate of 0.60% for the first 12 months .
The downsides are, however, you need a minimum of £500 to get started, you only get 3 withdrawals before you’ll be penalised with a lower rate, and the bonus now only lasts for 3 months, not the 12 months that was previously offered. Once the bonus drops out after 3 months, you’ll be left with a rate that isn’t as high as you could get elsewhere.
Don’t forget, though, you’re free to transfer your Cash ISA to a new provider as many times as you want. So if you want a quick boost, this is a fantastic option. Just remember to always use the official transfer process, and aways let the new provider initiate the transfer — don’t withdraw the money yourself, or you’ll lose the ISA tax benefits. There are no exit fees on the cash ISAs we’ve featured on this page, but some providers may apply them.
Fees
Zero fees for this Cash ISA.
For a detailed analysis of Moneybox, check out our full review
Read full review5.0/5
– 4.27% AER (fixed)
High rates of interest paid on savings accounts
Fixed-rate and variable-rate Cash ISAs available, plus Stocks and Shares LISA and Cash LISA.
Capital at risk
Tembo’s Fixed Rate Cash ISA (provided by Investec) is the leader of the pack, offering an excellent 4.27% AER (fixed). And, as this is a fixed rate, that’s guaranteed income on your savings.
As with all ISAs, you are limited to adding in £20,000 per year, but you don’t have to do all that upfront: Tembo will allow you to top-up your balance at later dates and keep a fixed rate (at whatever the current rate is at that time) for 12 months on those savings too.
The catch, of course, is that you won’t have the ability to withdraw these funds if you need them. They’re locked away for 12 months – that’s the trade-off for that great rate of interest.
There is another disappointment with this ISA – Tembo don’t currently accept transfers from other providers. So you’d need to liquidate your funds to move them into this account. And that, don’t forget, means you’re limited to depositing just £20,000 per year. So think carefully if you’re considering withdrawing money from another Cash ISA to place it in this account because £20,000 is the combined maximum you can place into any ISA or combination of ISAs in one tax year.
Fees
No fees.
Read Clare’s full review
Read full review4.5/5
– 4.20% AER (variable) including 12 month promotional boost of 1.16% AER
Flexible
Withdraw or deposit as many times as you like
Capital at risk.
New customers can get a boosted rate for 12 months that pays an exceptional 4.20% AER (variable). After that (and for existing customers) it’s 3.04%.
Even without the boost, it’s still a strong rate but it is a tracker rate, which means it tracks at 0.26% below the Bank of England base rate. While this means that if the rate moves up, Chip account holders stand to gain, it also means the rate could go down at any time.
You can access the Chip cash ISA for free; however, a lot of their features come with a fee including autosaves which will cost 45p per save. These are free with Plum so that’s a consideration.
Fees
Zero fees to use the cash ISA but you will pay to use the automated savings tools.
Read my full review
Read full review4.5/5
– 4.20% AER (fixed for 1-year)
Great rate for a fixed Cash ISA.
Well-known high street brand.
Capital at risk.
You’re getting peace of mind and a sense of security with this fixed rate from a major high street brand. And this rate is excellent. We’re often critical of the big banks for their lazy interest rates that rely on customers not wanting to shop around, but this rate competes with the top offers so is well worth a look if you’re saving more than £1,000.
Fees
No fees.
Just how good is NatWest for investors? Read Clare’s full review.
Read full review5.0/5
– 4.10% AER (variable)
High rates of interest paid on savings accounts
Fixed-rate and variable-rate Cash ISAs available, plus Stocks and Shares LISA and Cash LISA.
Capital at risk
Tembo make its second appearance in this table – this time with a variable rate Cash ISA.
The benefits of this account are that there are no penalties if you need to get your hands on any of the cash you’re saving, no limits on the number of times you can withdraw without being penalised with a lesser rate, and no fees. It’s also quick and easy to make withdrawals with requests made before 2pm being processed that same working day, and requests after the cut-off available the following working day.
A couple of points to note, though: Firstly, the Tembo Cash ISA is not a flexible ISA. This means that if you withdraw funds and later redeposit them within the same tax year, the redeposited amount will count twice towards your annual ISA allowance. Secondly, as with all variable rates of interest, it can be adjusted up or down if the Bank of England changes the base rate of interest.
But, unlike Tembo’s fixed rate Cash ISA, you can make transfers from other providers into this account. That means you could be gaining interest on far higher balances if you’ve accrued a large savings pot elsewhere.
Fees
No fees.
Read Clare’s full review
Read full review4/5
– 3.95% AER (variable)
Flexible ISA
No penalties for withdrawing cash
Exceptionally high rate of interest
Investments involve risks and are not suitable for all investors. CFDs are complex instruments and come with a high risk of losing money rapidly due to leverage. 61% of retail investor accounts lose money when trading CFDs with this provider.
3.95% AER (variable) is a decent rate, and it is a flexible ISA, which is great news if you might want to withdraw money during the tax year and don’t want to lose any of your allowance. Plus, you can access your money with no withdrawal limit – no matter how many times you withdraw money, CMC won’t reduce your interest rate.
You also don’t need as large a deposit for this account – just £1 vs Moneybox’s £500.
Something you may want to be aware of, however, is that CMC Invest, like Trading 212 and Plum, may put your deposits into Qualifying Money Market Funds instead of bank vaults. If a QMMF goes down in value, this may affect the value of your cash. The risk is very low, however. Platforms choose this option as it allows them to skim a layer of interest from the returns that can be gained on investments, while keeping risk to a minimum for savers. But there is some risk, nonetheless.
Fees
No fees.
Read Antonia’s full review of CMC Invest
Read full review5.0/5
– The 1-Year Fixed Rate Cash E-ISA is paying 4.16% AER (variable)
Large range of cash savings accounts
4.16% AER (variable) interest rate on Cash ISA
Capital at risk.
This is an excellent fixed rate, so provides a guarantee on how much interest your cash will earn, no matter what the Bank of England does to rates in the next 12 months.
Unlike Tembo’s slightly higher fixed rate account, this one from Virgin allows transfers in from other ISA providers, meaning you can potentially be earning interest on a far higher amount if you’ve already saved a big pot elsewhere, and want to move it all over to this rate. With the Tembo pot, you’re limited to just the £20,000 the government permits being paid as new cash into ISAs per year.
Fees
No fee.
Read Clare’s full review of Virgin Money Investing
Read full reviewWhen investing, your capital is at risk and you may get back less than invested. Past performance doesn’t guarantee future results
Trading 212 already appears on many of our ‘Best of’ lists at Investing Insiders. So we were already fans of their exceptional value and uncomplicated interface for investors. But now they have rolled out one of the highest rates of interest available on any UK cash ISA (3.85% AER), we’re big cheerleaders for their savings options too.
Moneybox, Plum, and CMC Invest have higher rates, but they only outperform Trading 212 if you consider their bonus rates, which are only applied for 3 months. Once those drop away, Trading 212 is a very good rate, second only to Tembo’s.
Trading 212’s Cash ISA is also a
One thing to note – Trading 212, like CMC Invest and Plum, may put your deposits into Qualifying Money Market Funds instead of bank vaults. If a QMMF goes down in value, this may affect the value of your cash. The risk is very low, however.
Fees
No fees, even to access T212’s investment accounts.
Read my full review of Trading 212
Read full review4.5/5
– 4.01% AER (variable), falling to 3.50% AER after 12 months
Marcus might not be a name you’re familiar with but as a Goldman Sachs brand, you’re getting peace of mind that this is a financial services giant.
Interest is calculated daily and paid monthly, but you won’t be able to transfer in any existing ISAs you have and this top rate only applies to new customers, and only lasts for 12 months. After that (or if you’re an existing customer), the rate is 3.50% AER.
It also isn’t a flexible ISA, which whatever you take out can’t be replaced within your tax-free allowance. You’ll also lose the tax-free benefit on any future interest earned on that withdrawn amount.
Fees
No fees to use this cash ISA.
A cash ISA is a savings account but unlike regular savings accounts, any interest you earn is free of any tax. If you are already using up your personal allowance, then saving into a cash ISA will allow you to keep more of your gains.
You can save up to £20,000 into a cash ISA each tax year, anything over and above that amount will be subject to tax at your regular rate.
The personal savings allowance refers to the amount of money you can earn from interest without having to pay tax on those earnings. Remember, that within a cash ISA, this isn’t an issue as your earnings are protected from the taxman. However, when using regular savings accounts, anything over the personal allowance is subject to tax. The personal savings allowance is as follows:
This will depend on the provider and the current rate of interest they offer. Interest rates change all the time but at the time of writing, the best interest rate available in a cash ISA is 5.2% at Trading 212
They are the same! All the rules and regulations surrounding the product remain the same regardless of who the provider is. The main difference between the platforms I have recommended in this article, and the high street banks, is that the cash ISAs here offer better interest rates.
No, there is no limit — you are free to transfer your cash ISA as many times are you like. In fact, many savers use this strategy to chase higher bonus rates or better interest deals.
There are a couple of points to remember, though:
Completely safe. All these platforms are authorised and regulated by the Financial Conduct Authority 9FCA0 and in addition offer protection to the value of £85,000 by the Financial Services Compensation Scheme (FSCS)
Not necessarily – these are two very different vehicles for growing your wealth. Saving is better for anyone who might need access to their wealth within the next five years, whereas, investing offers the opportunity for better returns but is considered a long-term endeavour of at least 5 years.
There are two types of saving accounts – easy access, and fixed term. Fixed term means you will commit to leaving your money untouched in the savings account for a fixed period of time, usually in exchange for a better interest rate.
Conversely, easy access allows you to deposit and withdraw money whenever you like. What is interesting about this, is that at the time of writing this page, easy-access cash ISAs are offering the leading rates and there is therefore no advantage to locking your money away for a fixed term.
This depends on your age. If you are between the ages of 18 and 39, then a Lifetime ISA is a much better option as it attracts a government bonus of 25% on every deposit up to the value of £1,000 a year. You can either use this account to accumulate interest, or place your money into the stock market in order to grow a deposit.
For more information on Lifetime ISAs, and to find the best providers with the best returns at the lowest costs, go to my article here.
Yes, and you should! However, it is really important that you don’t just withdraw your funds and deposit them with a new provider as this will inadvertently affect your ISA allowance. Contact the provider you wish to transfer to and ask for their assistance in doing an ISA transfer.
A flexible cash ISA allows you to withdraw and deposit without affecting your ISA allowance. As an example, if I deposit £100 into a cash ISA that is NOT flexible, then withdraw £50, and deposit that amount back into the ISA, I would have used £150 of my ISA allowance. With a flexible ISA, this example would only use £100 of my ISA allowance.
Yes, at the start of this financial year, the rules surrounding ISAs were changed to allow consumers to open multiple accounts with different providers as long as they still remain within the ISA allowance across all the accounts.
The interest rates on this list are correct at the time of publication. However, I would encourage savers to check the websites of the platforms for the latest rates.