If you’ve been wondering whether a stocks and shares ISA could actually work for your savings, you’re not alone—and Martin Lewis has been asking the same question on behalf of millions of UK investors. His MoneySavingExpert platform breaks down exactly how these tax-free investment accounts work, what they cost, and which providers are worth your time.
Annual ISA allowance: £20,000 for 2026/27 tax year ·
Tax year period: 6 April 2026 to 5 April 2027 ·
Eligible age: 18 or over ·
Cash ISA change: Allowance reduced from April 2027 ·
Top source: MoneySavingExpert.com
Quick snapshot
- UK adults can invest up to £20,000 tax-free per year (MoneySavingExpert)
- Stocks and shares ISAs protect investments from dividend, income, and capital gains taxes (The Times)
- Multiple stocks and shares ISAs can be opened per tax year since April 2024 (MoneySuperMarket)
- Hargreaves Lansdown, Vanguard, Freetrade, Moneybox rated by Which? (Which? consumer champion)
- Trading212 ranked top in 2026 comparison with free fractional shares (Chris Palmer YouTube)
- Platform fees typically range from 0.45% to 1.2% AMC (money.co.uk investment guide)
- Specific 2026 performance returns for individual platforms have limited public disclosure
- Future average returns remain inherently unpredictable due to market conditions
- Cash ISA limit drops to £12,000 from April 2027 (MoneySuperMarket policy update)
- New allowance year begins 6 April 2026 (MoneySuperMarket policy update)
- November 2025 budget confirmed these changes (MoneySuperMarket policy update)
Key figures and timelines that define how UK investors can use stocks and shares ISAs are summarised below.
| Factor | Detail |
|---|---|
| ISA Allowance | £20,000 per tax year |
| Tax Year | 6 Apr 2026 – 5 Apr 2027 |
| Cash ISA Change | Reduced to £12,000 from Apr 2027 |
| Top Guide Source | MoneySavingExpert.com |
What is the best performing stocks and shares ISA?
The honest answer is that past performance doesn’t guarantee future results—but certain platforms consistently rank higher for fees, usability, and investor support. Which? identifies Hargreaves Lansdown, Vanguard, Freetrade, and Moneybox as top-rated providers based on their overall offering (Which? Financial Services). A recent comparison ranks Trading212 as the top Stocks & Shares ISA for 2026, highlighting its free fractional shares offering (up to £100 for new users) and zero platform fee model (Chris Palmer YouTube).
“Investing in a broad spread of investments—such as a collection of funds rather than individual shares—should significantly outperform saving and beat inflation, though there are no guarantees.”
— Martin Lewis, MoneySavingExpert
Best stocks and shares ISA UK
When evaluating providers, key factors include platform fees, fund charges, investment choice, ease of use, and performance history (money.co.uk). Martin Lewis recommends using comparison tools to identify the cheapest platforms, noting that platform fees like 0.45% are common, though some providers charge Annual Management Charges of up to 1.2% (money.co.uk investment ISA guide). Hargreaves Lansdown frequently appears as a top-rated option in independent reviews.
Trading 212 stocks and shares ISA
Trading212 distinguishes itself with fee-free trading on a wide range of shares and funds, plus fractional share investing that lets you buy portions of expensive stocks with small amounts. It ranked first in a 2026 comparison for its combination of low costs and user-friendly interface (Chris Palmer YouTube review). The platform also offers a free fractional share worth up to £100 for new users, though terms and conditions apply.
Vanguard stocks and shares ISA
Vanguard features prominently in best ISAs lists for 2026, particularly for investors who want a straightforward, low-cost approach to index fund investing (Which? independent ratings). Its strength lies in offering access to Vanguard’s own low-cost funds, which track market indices rather than trying to beat them.
Other notable UK providers
Beyond the top-rated platforms, several other providers serve UK investors. AJ Bell offers a wide range of investments and competitive pricing, making it popular among self-directed investors (MoneySavingExpert ISA comparison). Halifax and Nationwide provide established banking relationships for those who prefer managing their ISA alongside other accounts, while HSBC offers international investing options for investors seeking global diversification.
Low-fee platforms like Trading212 and Vanguard save you money over decades of investing, but the cheapest platform isn’t always the best fit if you need strong customer support or more advanced investment options.
What is the average return from a stocks and shares ISA?
Average returns vary significantly depending on your investment choices, time horizon, and market conditions. Martin Lewis and MoneySavingExpert note that broad fund diversification should significantly outperform saving and beat inflation, though there are no guarantees (MoneySavingExpert).
Historical performance context
UK stock markets have historically returned around 5-7% annually over long periods when adjusted for inflation, though this varies by index and time period. The so-called “7% rule” that some investors reference is a rough estimate of long-run stock market returns, not a guaranteed rate. Stocks and shares ISAs can grow wealth faster than cash ISAs due to stock market exposure, but this comes with the risk of capital loss (MoneySuperMarket investing guide).
Setting realistic expectations
To potentially earn £1,000 per month from a stocks and shares ISA, you’d need a substantially larger pot—roughly £150,000-£200,000 assuming a 6-8% annual return—making it a long-term goal rather than a short-term income source. The key is starting early and staying invested through market ups and downs, allowing compound returns to work in your favour over time.
“Get tax-free interest on savings of up to £20,000. Martin Lewis compares the top paying cash ISAs to help you get the most from your savings.”
— MoneySavingExpert platform
A £10,000 investment at a 7% annual return grows to roughly £19,700 over 10 years versus £10,450 in a cash account earning 4.5%—but only if you stay invested through downturns.
What are the downsides of a stocks and shares ISA?
Stocks and shares ISAs aren’t without risk. The primary downside is that investments can fall as well as rise, meaning you could get back less than you invested. Market volatility is normal, but it can feel unsettling if you need to access your money during a downturn.
Can I lose all my money in stocks and shares ISA?
Technically, if you invested entirely in a single company that collapsed, you could lose your entire investment in that holding. However, spreading your money across a diversified range of assets (like index funds) significantly reduces this risk. No platform is FDIC-insured like bank accounts, but UK-regulated platforms are covered by the Financial Services Compensation Scheme (FSCS) for up to £85,000 if the platform itself fails—not for investment losses.
What to do if your stocks and shares ISA is losing value?
Panic-selling typically locks in losses and undermines your long-term strategy. MoneySavingExpert advises that staying the course through volatility, rather than selling in a downturn, has historically been the better approach for long-term investors. Review your asset allocation, ensure it matches your risk tolerance and time horizon, and consider whether you’ve diversified appropriately across funds, sectors, and geographies.
Stocks and shares ISAs protect your profits from tax, but they don’t protect your capital from market losses. Only invest money you won’t need for at least 5 years.
The implication is clear: stocks and shares ISAs suit long-term investors who can tolerate volatility, not those who may need to access their capital in the near future.
Cash ISA vs stocks and shares ISA – what’s the difference?
The fundamental distinction comes down to risk versus reward. Cash ISAs pay guaranteed interest (currently up to 4.56% for fixed-rate deals according to Martin Lewis), while stocks and shares ISAs offer potential for higher returns but without guarantees (MoneySavingExpert cash ISA rates). Both types benefit from tax-free status within your £20,000 annual allowance.
Can I have £20,000 in both a cash ISA and stocks and shares ISA?
Yes. The £20,000 ISA allowance is a combined limit across all ISA types—you can split it however you like between cash ISAs, stocks and shares ISAs, and innovative finance ISAs. You could theoretically put £20,000 in a cash ISA and £20,000 in a stocks and shares ISA if you have two separate ISA subscriptions for the tax year, though this would max out your allowance. From April 2027, the cash ISA component will be limited to £12,000 of that combined allowance.
Risk vs reward comparison
Cash ISAs at 4.51-4.56% offer certainty but may lag behind inflation over time. Stocks and shares ISAs have historically outperformed cash over long periods, but short-term volatility means your money isn’t guaranteed to grow. The right choice depends on your timeline: cash works better for short-term goals (under 3 years), while stocks suit longer-term wealth building.
Younger investors with 10+ year horizons typically benefit more from stocks and shares ISAs, while those approaching retirement may prefer the security of cash ISAs—even accepting slightly lower returns for peace of mind.
The pattern across UK financial guidance suggests that the split between cash and stocks ISAs should reflect your investment horizon and risk tolerance, not arbitrary allocation.
Are Stocks And Shares ISAs Worth It?
For most people with a long-term savings horizon, the answer is likely yes—if you can tolerate some short-term losses in exchange for tax-free growth potential. Martin Lewis via MoneySavingExpert recommends using platforms to open the cheapest stocks and shares ISAs, emphasising that the tax advantages compound significantly over decades (MoneySavingExpert stocks ISA guide).
Is it worth putting money in stocks and shares ISA?
Stocks and shares ISAs provide tax-free returns on investments in stock market assets like funds, bonds, or shares (MoneySuperMarket). The tax-free status means all dividends, interest, and capital gains generated inside the ISA escape income tax and capital gains tax entirely—benefits that grow more valuable the larger your portfolio becomes.
Understanding the 7% rule
The “7% rule” is an informal benchmark some investors use, suggesting stocks historically return around 7% annually over long periods. While useful as a rough planning guide, it’s not guaranteed—actual returns vary, and recent decades have shown returns can be substantially lower or higher in any given year. Treat it as a ballpark figure for long-term planning, not a promise.
Platform Comparison
Three providers dominate top ratings across independent comparison sites. Each offers distinct advantages depending on your investing style and priorities.
| Platform | Key Strength | Typical Fees | Best For |
|---|---|---|---|
| Trading212 | Free fractional shares, no platform fee | 0% platform, FX fees apply | Beginners, cost-conscious investors |
| Hargreaves Lansdown | Wide fund choice, strong research tools | 0.45% platform, fund fees extra | Active investors wanting research access |
| Vanguard | Low-cost index funds | 0.15% platform, limited fund range | Passive investors, long-term holders |
Comparison factors include fractional investing capability, total costs, customer support quality, foreign exchange fees, platform usability, safety reputation, user reviews, company longevity, and investment flexibility (Chris Palmer YouTube platform comparison).
Upsides
- Tax-free growth on all investment returns
- £20,000 annual allowance (2026/27)
- Choice of platforms from low-cost to full-service
- Potential to outperform cash accounts long-term
- Flexible—split between cash and shares ISAs
Downsides
- Capital at risk—investments can fall in value
- Requires tolerance for short-term volatility
- Platform and fund fees reduce returns
- FX fees for international stocks add up
- Cash ISA limit drops to £12,000 from Apr 2027
What this means for UK investors is that choosing a platform involves balancing cost savings against the level of service and features you need.
Related reading: James Halstead Share Price · UK Take Home Pay Calculator
Martin Lewis frequently highlights top platforms, echoing warnings that delaying stocks and shares ISAs could cost UK savers real money before tax year end.
Frequently asked questions
How much do I need in a Stocks and Shares ISA to earn £1,000 a month?
As a rough guide, you’d need approximately £150,000-£200,000 invested at a 6-8% annual return to generate £1,000 monthly. This is a long-term goal—most people build this portfolio over 20-30 years of consistent investing rather than expecting immediate income.
Where can I get a 10% return on my investment?
No provider guarantees 10% returns. Historically, diversified stock market investments have returned around 5-7% annually over long periods, but this isn’t guaranteed. Be wary of any platform or advisor promising specific returns—they can’t deliver on that promise.
What is the 7% rule in stocks?
The “7% rule” is an informal benchmark suggesting long-term stock market returns average roughly 7% annually. It’s a useful planning figure but not a guarantee—actual returns vary by market, time period, and investment choice.
What are 5 stocks to buy now?
This article doesn’t provide specific stock recommendations. Martin Lewis and MoneySavingExpert advise that for most people, diversified index funds (like those offered by Vanguard) are better than picking individual stocks, as they spread risk across hundreds of companies rather than betting on a handful.
Can I lose all my money in stocks and shares ISA?
You can’t lose your entire ISA from platform failure (FSCS covers up to £85,000), but you can lose most of your invested capital if your investments perform poorly. Spreading money across diversified funds rather than individual shares reduces this risk significantly.
What to do if your stocks and shares ISA is losing value?
Avoid panic-selling, which locks in losses. Review your asset allocation to ensure it matches your risk tolerance, consider whether you’re diversified across funds and sectors, and remember that short-term volatility is normal for long-term investors.
Martin Lewis best ISA rates for over 60s
Martin Lewis focuses on finding the best rates regardless of age. For those over 60 with shorter investment horizons, cash ISAs may be more appropriate than stocks and shares ISAs—but the best choice depends on individual circumstances, not age alone.
For UK investors ready to act, the path is straightforward: compare platform fees, choose a diversified approach, and start before the next tax year begins on 6 April 2026.
Arthur Oliver Howard Fletcher is a staff writer for NationalReport.uk, covering UK national news, politics, the economy and public services. He works under Editor-in-Chief Andreas Christodoulou and UK Managing Editor Rebecca Morgan, following the newsroom standards for sourcing, verification and fact-checking set out in our editorial policies.