Is it good to have multiple cash ISAs?

Asked by: Erna Bartoletti Sr.  |  Last update: July 26, 2026
Score: 4.2/5 (43 votes)

Yes, having multiple Cash ISAs can be beneficial for maximizing interest, enhancing flexibility, and staying within the Financial Services Compensation Scheme (FSCS) protection limit of £120,000 per person, per authorised firm. Since April 2024, you can open and pay into multiple Cash ISAs within the same tax year, provided total contributions do not exceed the £20,000 allowance.

Is it worth having two cash ISAs?

The benefits of owning multiple cash ISAs

Holding multiple cash ISAs - and even splitting your annual contributions - can allow you to: maximise tax-free returns. balance flexibility with protection. stay within FSCS limits.

What happens if I have more than one cash ISA?

You can open another Cash ISA, as long as you only pay money into one during the tax year. You can't open a new one and keep saving into your old Cash ISA. If you have lots of ISAs from previous tax years, you might be able to transfer your ISA. Not all providers will let you transfer an ISA.

What does Martin Lewis say about cash ISAs?

If you're not paying tax on your savings interest, cash ISAs have no benefit – so many should ditch them for higher-paying standard accounts. That's the message from MoneySavingExpert.com founder Martin Lewis in the third episode of the latest series of ITV's The Martin Lewis Money Show Live.

How many people have $500,000 in an ISA?

The HMRC document also said there were around 3,080 Isa accounts with a market value of £1 million-plus in 2022/23. It counted 30 cash Isa accounts with £500,000-plus in them and 38,680 stocks and shares accounts containing at least £500,000 in the tax year 2022/23. The figures were rounded to the nearest 10.

How many ISAs can I have? New rules explained

29 related questions found

What is the 7 3 2 rule?

The 7-3-2 rule is a financial strategy for wealth building, suggesting it takes 7 years to save your first major financial goal (like a crore), then accelerating to achieve the next goal in 3 years, and the third goal in just 2 years, leveraging compounding and disciplined, increased investments (like a 10% annual SIP hike). It highlights how returns compound faster over time, drastically reducing the time needed for subsequent wealth targets, emphasizing patience and consistent, growing contributions.
 

What is the downside to a cash ISA?

Disadvantages: Interest rates may decrease, funds might be locked in fixed-rate ISAs, and not all accounts permit transfers, sometimes incurring exit fees.

What is the 70/20/10 rule money?

The 70/20/10 rule for money is a simple budgeting guideline that splits your after-tax income into three categories: 70% for Needs (essentials like rent, groceries, bills), 20% for Savings & Investments (emergency funds, retirement), and 10% for Debt Repayment & Donations (extra debt payments or giving). It balances immediate living costs with long-term financial security, helping you cover necessities while building wealth and paying off liabilities.
 

Where can I get 7% interest on my savings in the UK?

You can get around 7% interest on savings in the UK primarily through Regular Saver accounts, with top offers from Zopa (7.1% variable), First Direct (7% fixed), and the Co-operative Bank (7% variable), though these often require you to have their current account and limit monthly deposits, while Principality Building Society has offered rates near this (7.5%) on fixed-term savers, so check MoneySavingExpert and MoneyWeek for current deals. 

What is the loophole for cash ISA?

The UK government has announced significant changes to the tax treatment of cash held within stocks and shares Isas, targeting a loophole that could allow savers to bypass newly imposed caps on tax-free cash savings.

Do I need to declare my ISA on my tax return?

All interest, income and capital gains within an ISA are tax-free, and you don't need to include them on a tax return. Learn more about the different types of ISAs in our guide to ISAs and other tax-efficient ways to save or invest.

Is there a downside to having multiple savings accounts?

The more savings accounts you have, the harder it can be to keep up with them. You should only open as many accounts as you can easily manage that allow you to meet your goals. Minimum balance requirements. In some situations, maintaining the required minimum balance may be difficult with multiple savings accounts.

What is the $27.39 rule?

The "27.39 rule" (often rounded to $27.40) is a simple financial strategy to save $10,000 in one year by consistently setting aside $27.40 every single day, making it an achievable micro-saving habit to build wealth or an emergency fund. It turns the daunting goal of saving $10,000 into a manageable daily action, emphasizing consistency over large lump sums.

What happens if you have more than one cash ISA?

You are allowed to open as many stocks and shares and cash ISAs as you want. You can only open one Lifetime ISA and one of each of the junior types. You need to keep an eye on the amount you are paying in if you do open more than one ISA.

What is the 3 6 9 rule of money?

3 months if your income is stable and you have a financial safety net. 6 months as a general rule, if you have children or large financial obligations, such as mortgages. 9 months if you're self-employed or have an irregular income stream.

Are cash ISAs worth it anymore?

Currently, it's possible to get a cash ISA savings rate that beats the current rate of inflation (3.5% at the time of writing). This means your savings has more purchasing power. This is one reason why it could be time to think about moving your money into a savings or investment account with high interest rates.

Is cash ISA better than savings?

Cash ISAs are tax-free. You won't pay tax on any interest you earn. At NatWest, we offer an instant access Cash ISA, and a Fixed Rate ISA with a set term. On the other hand, the interest you make on normal savings accounts may be taxed, if it's more than your Personal Savings Allowance.

ISA cash ISA 100% safe?

Are Cash ISAs safe and secure? Cash you put into UK authorised banks or building societies – including within a Cash ISA – is protected by the Financial Services Compensation Scheme (FSCS). The FSCS savings protection limit is £120,000 (or £240,000 for joint accounts) per authorised firm.