Are ISAs still worth it? Exploring cash, stocks and shares, lifetime, and junior ISAs

If you’re looking for a tax-efficient way to save or invest, ISAs (Individual Savings Accounts) have long been the go-to option.

But with interest rates fluctuating, inflation remaining sticky, and alternative investment platforms on the rise, many people are now asking if ISAs are still worth it?

The short answer? In most cases, yes. But the right type of ISA for your goals, time frame, and risk tolerance matters more than ever.

In this guide, I’ll break down each type of ISA:

• Cash ISAs
• Stocks & Shares ISAs
• Lifetime ISAs
• Junior ISAs

You’ll learn what they offer, how they compare, and whether they make financial sense.

You’ll also find step-by-step tips to help you use each one effectively.

What is an ISA?

An ISA is a tax-free savings or investment account. The key benefit? You don’t pay tax on any interest, dividends, or capital gains earned inside the ISA.

ISAs have been in the news a lot over the past year or so but there are still a lot of people who don’t know about them or don’t use them.

I want to change that.

The current annual ISA allowance (2025/26):

You can put up to £20,000 per tax year into ISAs (this limit is set by HMRC). You can split this across different types of ISAs, but you can only:

• Pay into one of each type per year.
• Use up to the full £20,000 combined across all ISAs.

You don’t lose unused allowance from previous years but you can’t roll it over.

1. Cash ISAs: Are they still worth it?

Cash ISAs are tax-free savings accounts that allow you to earn interest without paying tax on it, making them a straightforward way to grow your savings.

They’re especially appealing if you want easy access to your money and minimal risk.

What is a Cash ISA?

A Cash ISA is a savings account where you don’t pay tax on the interest earned.

There are two main types:

• Instant access (flexible, lower rates)
• Fixed term (higher rates, locked in)

Who it suits:

• Low-risk savers who want easy access
• People who have already used up their Personal Savings Allowance (PSA)
• Those who want tax-free savings but don’t want to invest

Interest rates 2026:

• Average easy-access Cash ISA: ~3.6% AER
• Best 1-year fixed-rate ISA: ~5.1% AER
• Check latest rates at Moneyfacts

Is it better than a regular savings account?

Often not, unless you’re a higher-rate taxpayer or you have used up your Personal Savings Allowance.

The current PSA is:

• Basic rate taxpayers (20%) up to £1,000 interest tax-free
• Higher rate taxpayers (40%) up to £500 interest tax-free
• Additional rate taxpayers (45%) no allowance

If your interest is below your PSA, a regular savings account paying higher interest could be better than a Cash ISA.

When a Cash ISA is worth it:

• You’re a higher or additional rate taxpayer
• You already earn more interest than your PSA covers
• You want to protect a large cash sum from future tax
• You prefer simplicity and capital protection over growth

Practical example:

If you’re a basic-rate taxpayer and have £15,000 in savings earning 5%, that’s £750 per year in interest, all covered by your PSA.

A Cash ISA would be tax-free too, but likely at a slightly lower rate. If you had £50,000 saved, the interest would exceed your PSA, making a Cash ISA more attractive.

2. Stocks and Shares ISAs: Still a smart move?

Stocks and Shares ISAs let you invest in the stock market without paying tax on your capital gains or dividends.

They’re a popular option if you’re aiming for long-term growth and are comfortable with some level of risk.

What is a Stocks and Shares ISA?

This is an investment account that shelters your capital gains and dividends from tax.

You can hold:

• Individual shares
• Funds (like ETFs, index trackers)
• Bonds
• Investment trusts

You take on investment risk, meaning your money can go up or down in value. You can also get the potential for higher returns than cash over the long term.

According to Barclays’ annual equity-gilt study, UK stocks have returned around 5–7% annually after inflation over the long term, versus less than 1% for cash.

Key benefits:

• No capital gains tax on profits
• No tax on dividends
• Flexible, withdraw anytime without penalties
• Wide investment choice via platforms like Vanguard, AJ Bell, or Fidelity

Fees to watch out for:

• Platform fees (typically 0.25%–0.45% per year)
• Fund management fees (ongoing charges)
• Trading fees (if buying individual shares)

Who it suits:

• Medium-to-long-term savers (5+ years)
• Those comfortable with investment risk
• Anyone using their ISA allowance to shield investments from tax

When it’s worth it:

• You’ve maxed your pension contributions or want accessible investments
• You’re saving for a future goal and want long-term growth
• You expect your investments to generate significant gains or dividends

Practical steps:

• Use a fee calculator to compare platforms.
• If unsure, consider starting with a low-cost global index fund inside your ISA.
• Automate monthly investing to benefit from pound-cost averaging.

Example:

You invest £5,000/year into a global index fund returning 6% annually. In 10 years, you’d have around £65,000 tax-free inside your Stocks and Shares ISA.

3. Lifetime ISAs (LISAs): Still valuable?

Lifetime ISAs (LISAs) are designed to help you save for your first home or retirement, with the government adding a 25% bonus to your contributions.

You can save up to £4,000 a year, but there are strict rules on withdrawals to avoid penalties.

What is a Lifetime ISA?

A LISA is designed to help people:

• Buy their first home
• Save for retirement

You can contribute up to £4,000 a year, and the government adds a 25% bonus (up to £1,000/year).

You must be:

• Aged 18–39 to open one
• Under 50 to contribute

You can use the LISA funds:

• To buy your first home (worth up to £450,000)
• After age 60 (for retirement)
• For other reasons, but you’ll face a 25% withdrawal charge (effectively losing more than just the bonus)

Current status in 2026:

• LISA property price cap remains at £450,000, unchanged since 2017, despite rising house prices
• Many first-time buyers are now priced out in London and the South East

Who it suits:

• First-time buyers outside high cost areas
• Young adults looking for a tax free retirement top-up
• Savers who can commit for the long-term

When a LISA is worth it:

• You’re buying your first home soon and staying under the price cap
• You want to supplement your pension and lock in the 25% bonus
• You’re disciplined and won’t need the money early

Practical tips:

• Combine with a Help to Buy ISA (if you opened one before it closed in 2019)
• Make sure the home purchase qualifies. Check with your solicitor and MoneyHelper’s LISA rules
• Use a Cash LISA for short-term goals (house buying), and a Stocks and Shares LISA for retirement

Example:

You save £4,000 per year into a LISA for 4 years = £16,000.

Government adds £4,000 in bonuses = £20,000 total.

That’s a guaranteed 25% return, tax-free, before any investment growth.

4. Junior ISAs (JISAs): Still a good way to save for children?

Junior ISAs are long-term, tax-free savings or investment accounts for children under 18, designed to help build a financial head start for adulthood.

Parents or guardians can contribute up to £9,000 per year, but the child can’t access the money until they turn 18.

What is a Junior ISA?

A Junior ISA is a tax-free account for under-18s.

There are two types:

• Cash JISA
• Stocks & Shares JISA

You can contribute up to £9,000 per child per tax year. The money belongs to the child and they get access at age 18.

Benefits:

• Tax-free interest or investment growth
• Can be used for education, housing, or anything else at 18
• Builds a long-term financial habit for kids

Who it suits:

• Parents, grandparents, or guardians wanting to save for a child’s future
• Families who can commit to long-term growth without needing early access

When it’s worth it:

• You’re already saving for a child and want to avoid tax on growth
• You want to give a child a financial head start with university or house deposit funds
• You’re looking to pass on wealth gradually in a tax-efficient way

Practical tips:

• For newborns and younger children, Stocks & Shares JISAs usually offer better long-term returns
• Use Cash JISAs for teens nearing 18
• Consider setting up monthly contributions to grow the balance over time

Example:

You invest £100/month into a Stocks & Shares JISA from birth to 18 with 6% annual return = over £38,000 tax-free by adulthood

Are ISAs still worth it in 2026?

In almost every scenario, yes, but the right ISA matters.

How to make the most of your ISA

Here’s how to use ISAs more effectively in 2025 and beyond:

1. Use your full allowance if you can. It’s a “use it or lose it” system.
2. Review your risk profile. Don’t leave long-term savings in low interest Cash ISAs if you can stomach some risk.
3. Choose the right provider. Use comparison tools like Moneyfacts or Which? ISA comparisons to shop around.
4. Automate your savings. Set up monthly contributions. Even £50/month grows over time.
5. Mix and match. Use different ISAs for different goals. For example, a LISA for a home deposit, a S&S ISA for investing, and a JISA for your child.