Top Cash ISAs 2018/19

1.31% easy access or 2.3% fixed

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ISAs: They're a piece of cake

Everyone who's aged 16 and over can put a new �20,000 in to a cash ISA � a savings account where you never pay tax on the interest.

The best rates pay up to 2.3% and the earlier you save the more you'll earn. Don't worry if you've opened one in previous tax years, you can open another with whichever provider you choose. And if the rate is poor on your old ISA you can transfer it to the new one.

Best cash ISAs 2018/19

Easy access, withdraw anytime:
Fixed ISAs (with access):
- Wesleyan Bank 1.55% fixed for one year
- Shawbrook Bank 1.85% fixed for three years
Ethical ISAs

ISA Countdown

If you don't use it, you lose it.

Cash ISAs need-to-knows

Cash ISAs are just savings accounts you NEVER pay tax on

Everyone in the UK who's 16 or over gets an ISA allowance at the start of each tax year. For 2018/19 it's �20,000 � if you put money in it then it isn't eligible to be taxed, and this stays the same year after year.

It really isn't any more complex than that. Just like normal savings, cash ISAs come in different flavours � there's easy access (where you can withdraw money whenever you want), fixed rate (where you get a guaranteed rate, but are supposed to lock cash in for a set time) and a variety of other types.

So don't be scared, when you read cash ISA just see "a savings account you never pay tax on".
Quick questions

What happens to the allowance if I haven't used it by the end of the tax year?

Each tax year (6 April until the next 5 April), everyone aged 16 or over gets a new ISA allowance. But if you don't use it, you lose it.

Once that year's closed, you can't put another penny in that specific ISA allowance. So if you put aside nothing in the 2016/17 year, when the maximum was �15,240, that's it � it's gone. Or if you put �2,000 in during 2016/17, the year is closed, so you can't now top it up.

If you do deposit the cash in time, you can keep it in there, tax-free, for as long as you like. Then, as soon as the new tax year starts on 6 April, you can deposit a whole new year's allowance.

Can I make withdrawals?

Providing you've picked an easy-access ISA, you can withdraw the money whenever you want, just like a normal savings account. But remember, once the money's withdrawn � unless you have a flexible ISA � it can't be returned.

An example should help. Say you save �15,000 into a non-flexible ISA. That leaves �5,000 left to put in for the current 2018/19 tax year. Then two months later, still in the same tax year, you take out �10,000. You can still ONLY put �5,000 back in.
How many ISAs can you have?
According to HM Revenue & Customs rules, you can only have one current year's cash ISA open at any time. But you can have several old ones with several different providers, or you can have a cash ISA, a stocks and shares ISA, an innovative finance ISA and a Lifetime ISA at the same time.

So if you opened a cash ISA with Barclays two years ago, you don't need to stick with it for this year's cash ISA � you can choose whichever the top payer is.

Loophole to open more than one per tax year: A few providers allow you to open and pay in to more than one cash ISA with them in the same tax year under these rules:
- The ISAs must be with the same provider.
- You must stick to the overall cash ISA limit when totting up your combined balance between them.
Can I split between a fixed and easy-access ISA (or regular saver ISA)?

As we've already explained, you can put �20,000 in a cash ISA per tax year. With the bigger allowance introduced seven providers now offer a workaround. They've structured themselves so they can allow different versions of their ISA to count as one. So you can open as many of their cash ISAs as you like, as long as you DON'T GO OVER THE TOTAL CASH ISA LIMIT.

The providers that allow this are...

- Post Office

- Nationwide

- Aldermore

- Kent Reliance

- Newcastle BS

- Ford Money

- M&S Bank

- NatWest

- OakNorth Bank

- Charter Savings Bank

There's no special procedure � just open the ISAs and it'll be fine.

Is my money safe in an ISA?

Yes, it works the same as normal savings. So provided your money is in a UK-regulated bank or building society account, it's protected under the Financial Services Compensation Scheme. Its golden rule counts for cash ISAs too...

The first �85,000 per person, per financial institution is guaranteed.

While that sounds simple, the exact rules are more complex � not every bank in the UK is UK-regulated and there are complex rules involving how different banks are registered and what counts as a financial institution. For full info about the rules, see the detailed Are Your Savings Safe? guide.

How to maximise safety

If you've more than �85,000 of savings (including cash ISAs and others) in one bank, then, in the unlikely event it went bust, only the first �85,000 is fully guaranteed. So for total peace of mind, don't put more than this in any one institution. Spread it around instead.

Our preferred option is to report the top rates regardless, but to let you know if there is no UK protection. Triodos Bank is an example of this (it's based in the Netherlands).

Other top ISA guides...

ISA Transfer: If you're looking to transfer old cash ISAs.
Full ISA: For everything you need to know about ISAs.
Help to Buy ISA: Get an up-to-�3,000 bonus if you're a first-time buyer.
Lifetime ISA: Get a 25% state bonus on savings for under-40s.

These days, though, all savings are paid tax-free, so is a cash ISA worth it?

On 6 April 2016 the personal savings allowance (PSA) launched. It means all savings are now automatically paid tax-free. Basic 20% rate taxpayers can earn up to �1,000 interest a year without needing to pay tax on it, higher 40% rate taxpayers �500 (top 45% taxpayers will always pay tax on savings).

For most people that will be enough to make all their savings tax-free, and therefore the question is simply "what pays the highest rate?"

The answer to that isn't cash ISAs. So for most people with under around �20,000 of total savings, cash ISAs won't be a winner as they're easily beaten for most people by both top bank account savings, where you get a high rate as part of your current account, and top easy-access savings accounts.

So when is a cash ISA worth it?

The most important thing to note is that cash ISA interest doesn't count towards your PSA, so you can earn it tax-free, and still have your full �1,000 (or �500) PSA allowance. Therefore for top-rate taxpayers or bigger savers who've used up the PSA, there are big tax advantages of saving in a cash ISA.
- Basic-rate taxpayers over the PSA limit. For every �100 interest you earn in normal savings you only get �80, whereas in an ISA you get the whole �100. Therefore the normal savings rate would have to be 25% higher for it to beat a cash ISA.

- Higher-rate taxpayers over the PSA limit. For every �100 interest you earn in normal savings you only get �60, whereas in an ISA you get the whole �100. Therefore the normal savings rate would have to be 66% higher for it to beat a cash ISA.

- Top-rate taxpayers. For every �100 interest you earn in normal savings you only get �55, whereas in an ISA you get the whole �100. Therefore the normal savings rate would have to be 82% higher for it to beat a cash ISA.

So cash ISAs can be winners even with lower rates. Also it's worth remembering that while �1,000-a-year interest seems a lot now with our current pitiful interest rates, if interest rates rise then more people will need to pay tax. So saving into an ISA now could protect you from future tax.

You can save up to �20,000 this year in a cash ISA

You probably know of cash ISAs; they've now been around for more than 17 years. They were radically overhauled in 2014, with the amount you're able to save tax-free rising from just under �6,000 to a massive �15,000.

This year, due to the launch of the new Lifetime ISA, the limit has increased further to �20,000.

Cash ISAs can be flexible � letting you replace withdrawn cash

Some cash ISAs are flexible meaning you can replace cash withdrawn from them in the same tax year without it using up your year's ISA limit.

In practice, this means that if you had �1,000 in a flexible cash ISA you could withdraw �500 and replenish it later in the tax year without affecting your ISA limit.

If an ISA's non-flexible, any withdrawals do count towards your annual ISA limit. A �500 withdrawal from a non-flexible ISA would reduce your annual ISA limit even if you later deposited �500 back into the account.

However, it is up to different ISA providers to decide whether their accounts are flexible. We note in our best buys below whether or not the ISAs are flexible.

For full info on the flexibility, see Flexible ISAs.

If you're a wannabe first-time buyer, consider a Help to Buy ISA or Lifetime ISA � not a cash ISA

The first-time buyers' Help to Buy ISA launched on 1 December 2015 and it means that if you use the money towards buying a first home you get an extra 25% added on top, up to a maximum of �3,000.

Yet the rules say you can't contribute to a Help to Buy ISA and a cash ISA in the same tax year. So if you had to choose, even though you can put less in Help to Buy, the huge bonus means it's worth it. Luckily though there are a few providers who get round the 'you can't have both' rule; full info on this in our Top Help to Buy ISAs guide.
Alternatively, the new Lifetime ISA (LISA), which launched on 6 April 2017, also offers a 25% state bonus and can be used towards buying a first home or for retirement � though you can only open one if you're aged between 18 and 39.

You can save a maximum of �4,000 a year into a LISA and use the bonus to buy property worth up to �450,000, and unlike a Help to Buy ISA can open both a LISA and a cash ISA in the same tax year. However, access your money for anything other than purchasing a first home or for retirement aged 60+ and you'll pay a 25% withdrawal penalty (after the first year of the scheme). Full info in our Lifetime ISA guide.

Cash in an ISA stays tax-free YEAR AFTER YEAR

Cash in an ISA stays tax-free as long as it's in there. The aim's to protect more of your money which is why we nag you about using the full ISA allowance if you can.

If you miss a year now, you might regret it five years later. If you've big savings, you can gradually protect more and more of your cash. Those who started saving when ISAs were first introduced in 1999 could now be sitting on a good tax-free lump sum.

Check rates on old ISAs, as many are pitiful

Savings providers like us to think once our money's in, it's a done deal. This is wrong. Many old ISAs now pay appallingly low rates � check yours now. If the rates don't come close to the current best buys, ditch and transfer.

You've a RIGHT TO TRANSFER to boost them. Consolidating new and old cash ISAs together into one new shiny ISA makes it much easier to transfer again in future.

Our ISA Transfers guide has full options. Don't withdraw the cash though, as it'd no longer be in an ISA. Tell the new provider to transfer it for you instead.

Best buys Easy-access ISAs

Easy-access cash ISAs mean you can take out your money when you want, without penalty.

My building society or bank has a better rate than accounts here. Why isn't it featured?

MoneySavingExpert.com is a national website serving England, Scotland, Wales and Northern Ireland. So we try to feature accounts open to everyone, which means you need to be able to open them online, or by phone or post.

Branch-based accounts are more difficult, as unless the account is offered by one of the big banks it's unlikely that everyone will be able to reach a branch. For example, Kent Reliance Building Society sometimes offers decent branch-based accounts.

But a person in Brighton would have to travel almost 40 miles to their nearest branch to be able to open it. Similarly, someone in Carlisle couldn't access branch-based accounts offered by Ipswich Building Society as there isn't one close by.

It is always worth looking at local building societies and banks as they can occasionally have a corking branch-based account. But, because we're a nationwide site, we just can't feature them all.

However, there are fixed rates that offer some access so don't plump for an easy access unless you know you need to be able to withdraw the money within the first year.

Top rate and you can open with �1

Paragon Bank 1.31% AER

The Limited Edition Easy Access Cash ISA from Paragon Bank pays the top rate at 1.31%. It can be opened with �1, and you can make unlimited penalty-free withdrawals.

1.31,1

Need-to-knows

This ISA is not flexible so any money you take out of it and replace will count again towards your annual ISA allowance. For more on flexible ISAs see our need-to-know.
There's no bonus on the account so you need to watch in case the rate drops. If it does, transfer out to a better paying ISA.
Paragon Bank has the full �85,000 UK savings safety guarantee.

APPLY

Decent rate if you've �1,000+

Shawbrook Bank 1.3% AER

The Easy Access Cash ISA from Shawbrook Bank pays 1.3% so is a good option for those looking for an easy-access account.

Do be aware that if your balance falls below �1,000 you'll receive just 0.25% interest.

1.3,1000

Need-to-knows

You can make unlimited penalty-free withdrawals from the account.
There's no bonus on the account so you need to watch in case the rate drops. If it does, transfer out to a better paying ISA.
This ISA is not flexible so any money you take out of it and replace will count again towards your annual ISA allowance. For more on flexible ISAs see our need-to-know.
Shawbrook Bank has the full �85,000 UK savings safety guarantee.

APPLY

Decent rate but limited access to your cash

Virgin Money 1.3% AER

The Double Take E-ISA from Virgin Money also pays 1.3% and you can save from �1. While it offers a good rate, the account isn't for everyone as you can only make two withdrawals per calendar year.

If you do make two withdrawals and wish to make another, the only way to access your cash is by closing the account or transferring out to another ISA.

1.3,1

Need-to-knows

This ISA is not flexible so any money you take out of it and replace will count again towards your annual ISA allowance. For more on flexible ISAs see our need-to-know.
There's no bonus on the account so you need to watch in case the rate drops. If it does, transfer out to a better paying ISA.
Virgin Money has the full �85,000 UK savings safety guarantee.

APPLY

Best buys Fixed-rate cash ISAs allowing access

Fixed-rate savings are designed to lock money away for a set period. But by law, cash ISA providers MUST allow you access to your money, whenever you want it, though most will levy heavy penalties to do so.

For a slightly larger choice of accounts, please see Fixed ISA Transfers.

Top fixed-rate ISAs:

						Effective rate withdrawing after (1)
Provider	Rate (AER)	Fixed Term	Transfer allowed?	Interest paid	Penalty to withdraw	1yr	2yr	3yr	4yr	5yr
Top fixed ISAs (all allow early access/closure)
Wesleyan Bank	1.55% (min �20,000)	One Year	Yes	Annually	90 days' interest	1.55%	-	-	-	-
Shawbrook Bank	1.7% (min �5,000)	Two Years	Yes	Annually or monthly	180 days' interest	0.86%	1.7%	-	-	-
Shawbrook Bank	1.85% (min �5,000)	Three Years	Yes	Annually or monthly	270 days' interest	0.48%	1.17%	1.85%	-	-
Shawbrook Bank	2.3% (min �5,000)	Five Years	Yes	Annually or monthly	360 days' interest	0.03%	1.17%	1.54%	1.73%	2.3%
(1) The effective rate will be slightly less if you add more than one lump sum but the accounts will be in roughly the same order as keeping the same amount in there.

Best buys Ethical cash ISAs

Ethical savings accounts � where providers behave ethically in terms of the environment, human rights and more � have jumped in popularity. Our main focus always is telling you the top savings rates, but to match demand we've worked with Ethical Consumer to list the top-paying accounts that also rate highly on their ethics.

Ethical easy access savings � earn up to 1.05%

ALL THE ACCOUNTS BELOW HAVE THE FULL �85,000 UK GUARANTEE

Coventry BS 1.05% AER � Unlimited withdrawals

Ethical Rating 13.5/20

The Easy Access Coventry BS ISA pays 1.05% and you can open it with �1. Plus, it's a flexible ISA, meaning you can replace anything that you take out in the same tax year, without affect your annuual limit. Coventry BS has the full �85,000 savings guarantee.

Ethical fixed savings � earn up to 2.1%

ALL THE ACCOUNTS BELOW HAVE THE FULL �85,000 UK GUARANTEE

Coventry BS 2.1% AER fixed for five years - allows transfers in

Ethical Rating 13.5/20

The Coventry BS fixed-rate ISA pays 2.1% AER and is fixed until 30 November 2023. The account can be opened online, over the phone, by post or in branch.

Leeds BS 1.55% AER fixed for two years � allows transfers in

Ethical Rating 14/20

The two-year fixed-rate cash ISA from Leeds BS pays 1.55% AER from �100, plus you can transfer in previous years' ISAs. The account can be opened online, by post or in branch.

ISA Countdown

If you don't use it, you lose it.

How to compare the top Cash ISA rates

Fixed rate deals can change regularly. For a full list of fixed rate ISAs, use the MoneySupermarket* comparison (select cash ISAs and then bonds) or Moneyfacts. Though remember, they're just a simple list of top rates, so ensure you check for the possible pitfalls noted in this article.

The ISA savings calculator

When using the calculator below, use the AER (annual equivalent rate) for increased accuracy. It should be listed on your statement. Obviously as most accounts' interest rates are variable, the answers will change if the rate does, so only use the calculator to get a rough indication of your likely outcome.

The Cash ISA Calculator Pick your question

How much do you already have?

How much can you save a month?

What's the interest rate?

How far ahead do you want to look?

Please enter a valid current balance.

Please enter a valid monthly deposit.

Please enter a valid interest rate.

Please enter a valid number of years.

Your result

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you will have {{ps.result.totalSavings | currency:'£':(ps.result.totalSavings % 1 > 0 ? 2 : 0)}} in savings.

As you'll be saving more than {{ps.isaLimit | currency:'£':(ps.isaLimit % 1 > 0 ? 2 : 0)}} per year, we are assuming other family members will be using their ISA allowances to help you achieve this!

How much do you need to save?

How much do you already have?

How much can you save a month?

What's the interest rate?

Please enter a valid target.

Please enter a valid current balance.

Please enter a valid monthly deposit.

Please enter a valid interest rate.

Your result

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it will take you {{tts.result.timeToSave | addYearsMonthsLabel}}.

As you'll be saving more than {{tts.isaLimit | currency:'£':(tts.isaLimit % 1 > 0 ? 2 : 0)}} per year, we are assuming other family members will be using their ISA allowances to help you achieve this!

Well done, you already have {{tts.result.originalTarget | currency:'£':(tts.result.originalTarget % 1 > 0 ? 2 : 0)}} in savings.

How much do you need to save?

How much do you already have?

What's the interest rate?

When do you need it by?

Please enter a valid target.

Please enter a valid current balance.

Please enter a valid interest rate.

Please enter a valid number of years.

Your result

To have {{cmd.result.originalTarget | currency:'£':(cmd.result.originalTarget % 1 > 0 ? 2 : 0)}} in savings after {{cmd.result.originalYears || 0 | addYearsLabel}} and {{cmd.result.originalMonths| addMonthsLabel}},
you should save {{cmd.result.monthlyCalculation | currency:'£':(cmd.result.monthlyCalculation % 1 > 0 ? 2 : 0)}} a month.

As you'll be saving more than {{cmd.isaLimit | currency:'£':(cmd.isaLimit % 1 > 0 ? 2 : 0)}} per year, we are assuming other family members will be using their ISA allowances to help you achieve this!

Well done, you already have {{cmd.result.originalTarget | currency:'£':(cmd.result.originalTarget % 1 > 0 ? 2 : 0)}} in savings.

The calculator assumes you put money in at the beginning of each month, so if this isn't how you do it, the answers will be ever-so-slightly out. If you don't make regular deposits but put in lump sums, figure out the monthly equivalent for a rough answer. Feel free to play with the results to see how your savings are affected.

Want to complain about your savings provider?

If your savings provider has given you the incorrect interest rate, or you haven't received your interest at all, then you don't have to suffer in silence. It's always worth trying to call your provider first to see if it can help, but if not...

Resolver Info Box

This tool helps you draft your complaint and manage it too. It's totally free, and offered by a firm called Resolver, which we like so much we work with it to help people get complaints justice.

Resolver � free savings complaints tool*

If the complaint isn't resolved, you can use Resolver to escalate it to the free Financial Ombudsman Service.

ISA FAQs

Here's a list of the most common queries. If you've got a question we've not answered below, in the text above or in Martin's ISA video below, suggest a question in the forum.

Moving your ISA

I've got several ISAs from previous years � can I put them all into one?

Absolutely. Consolidating them into one makes it easier to keep on top of rates and boost to transfer again when they drop.
If I open and pay in to an ISA in the current tax year, then the rate drops, can I move it?

Yes, and you should. You can transfer ISA cash anytime, but if it's a 2018/19 ISA � one you've paid in to this tax year � you must move the whole amount and close the ISA completely.

With transfers of previous years' ISAs you can split this cash across different accounts. See ISA transfers for full info.
Can I transfer my ISA to someone else?

No, unfortunately not. You can withdraw the cash and give it to someone else but once money is taken out of an ISA, it loses its tax-free status � unless interest is then covered by your (or their) personal savings allowance.
Using and accessing your ISA
Can I open a joint ISA with my partner?

Quite simply, no � there's no such thing. ISA stands for 'Individual Savings Account' so you cannot have a joint one. You get one ISA allowance each and that's it.
What happens to a cash ISA if the holder has passed away?
If you're married or in a civil partnership, if your partner dies you can inherit a one-off extra ISA allowance on top of the annual �20,000, up to the total amount they had saved in ISAs. These are known as 'additional permitted subscriptions' (APS).

You have a few choices. You can simply keep the ISA with the same provider, move it to a different provider that accepts APS (not all do), or the ISA goes to someone else but you get the extra allowance. To claim your allowance, you'll need to give your partner's full name, address, date of birth and date of death, your marriage/civil partnership certificate and their national insurance number if you know it. Some providers may also require a copy of their death certificate.

The allowance you'll inherit will depend on when your partner died:
- Before 6 April 2018. You'll inherit an allowance equivalent to the total value of your partner's ISAs at the date of death.
- On or after 6 April 2018. You'll inherit an allowance equivalent to the total value of the ISAs at the completion of their estate, when their ISAs are closed, or at the third anniversary of their death, whichever is earliest � so any growth in value will be taken into account.
The inherited allowance is available to make use of for three years after your partner has passed away, or 180 days after the completion of their estate, whichever is later.

Note that inheriting the allowance is not the same as inheriting the cash in the ISA � your partner could, for example, leave some or all of their ISA money to someone else. You'd still get the extra allowance but would have to fund it with your own savings.

If you're not married or in a civil partnership you won't inherit any extra allowance.
Will I get any interest if I haven't had money in the account for a full year?

Interest is calculated daily so what you're actually paid is based on how much you've had in the account when it's payable.

If you've only had the full allowance (�20,000) in there for a month, you'll get a month's worth of interest on it. See our interest rates guide for a full explanation.
If I take money out of my ISA, do I then pay tax on it at my usual rate?

The amount you take out won't be taxed but you could taxed on any interest earned once the savings are outside the wrapper if the interest takes you over your personal savings allowance.
Should I use my ISA allowance for cash or stocks & shares?
This is all about whether you gain more from putting savings into an ISA or using your ISA allowance for investing.

The gain from putting cash into an ISA is simple: you never get taxed on the interest. But with investing, whether you actually gain from putting it in an ISA depends on your circumstances.
- Are you eligible for capital gains? Stocks & shares ISAs exempt you from capital gains tax (a tax on profits which you only pay when you sell your investments). Yet for 2018/2019 you can make �11,700 a year of profits before being hit by this tax, so this protection only helps those who are selling sizeable assets within one tax year, otherwise it's irrelevant.
- Will you put money into bonds? If you're investing in bonds such as corporate bonds or gilts (Government bonds), then you get the income without it being taxed in any case. For other bonds, a stocks & shares ISA will shelter the income from tax.
- Will you get an income? If you receive dividend income, you pay no tax on the first �2,000 earned. Anything over that is taxed at 7.5% for basic, 32.5% for higher, and a whopping 38.1% for additional-rate taxpayers. Within a stocks & shares ISA you pay no tax on dividend income, regardless of your tax status. So if you earn more than your allowance, it can represent a significant saving.
If you're a basic-rate taxpayer you'd need to do a comparison between the amount of tax you'd get charged on savings outside a cash ISA and the amount of tax on any investments held outside a stocks & shares ISA. If you're unsure you could always stick to the previous ISA situation where you could only split the between cash and investments 50/50.

Small investors who won't use their capital gains and are putting cash in shares investments will gain more using their cash ISAs to the limit, then putting the rest in shares. Big investors, especially those putting money in bonds, should max out their stocks & shares ISAs. Read the Stocks & Shares ISA guide for more information.
Alternatives to ISAs
Is it even worth saving in an ISA as rates are so low?

Yes if you want a tax-free lump sum for the future.

But if you're thinking "I want high rates AND a tax-free savings pot", there is an answer. You could put cash into a higher-paying account � see current accounts for 3% deals on up to �5,000 or top savings to get 1.5% on �20,000 � then a week before the end of the tax-year (6 April), move the cash into an ISA.

You get the high rate for a year, and keep it safe from the taxman going forward.
Should I offset my mortgage instead of putting cash into an ISA?

What you should do depends on your personal circumstances. If your mortgage rate is higher than what you could earn in an ISA, then yes, you'd be better off offsetting.

But if your rate is lower, or there are high penalties for repaying early if you don't have an offset mortgage, you might be better off putting savings in an ISA. Not only that, it'll give you a safety cushion should you need it in future.
Should non-taxpayers bother with ISAs when it makes no difference?

If you're likely to be a tax payer and earn more than your personal savings allowance in interest some time in the future, then yes.

If you do build up a lump sum of non-ISA cash, then go back to work, you'll have to pay 20% tax on any interest earned over �1,000 for basic-rate payers, 40% on any interest earned over �500 for higher-rate.

With cash in an ISA, whether you return to work or remain a non-taxpayer, the money is always protected.
If �1,000 or �500 in interest are tax-free in savings anyway, is there any point in an ISA?

Since April 2016, basic-rate and higher-rate tax payers have a new personal savings allowance. This allows you to earn �1,000 in interest before paying tax if you're a basic-rate taxpayer, and �500 if you pay higher-rate tax.

But this doesn't negate all the advantages of ISAs. There are many who will still benefit from saving in an ISA even if their tax status would be the same wherever they saved.
Cash ISAs vs premium bonds � what's best?

They are calculated in a completely different way. The only similarity is that they're both tax-free. Cash ISAs are simply savings accounts where you never pay tax on interest earned.

Meanwhile, premium bonds are simply a savings account you can put money into (and take it out when you want), where the interest paid is decided by a monthly prize draw. You can win between �25 and �1 million, tax-free.

If you owned every premium bond in existence, the amount won over a year would be equal to 1.15% of what you put in. So very roughly, for every �100 put into premium bonds on average, you'd expect a �1.15 annual return.

Yet because of the way the prizes are allocated, the majority of people will win much less than the interest rate anyway. You can use the Premium Bond Probability Calculator to see how likely you are to win an amount equal to the interest rate.