Best For Low-Cost ISA Award 2026 | Boring Money
Written by Boring Money
29 Jan, 2026
Who won the Best For Low-Cost ISA Award 2026?
The winners are Freetrade, IG, InvestEngine, Lightyear, Scottish Widows, Trading 212, and XTB. These providers were selected through pure cost analysis across different portfolio sizes, examining total investing costs including platform fees and ready-made investment solution charges, plus feedback from over 27,000 real customer reviews.
What are the Boring Money Best Buy Awards?
The Boring Money Best Buy Awards are independent rankings of UK investment platforms and providers, running for 9 consecutive years.
The awards recognise the best providers across multiple categories, including Stocks & Shares ISAs, pensions, digital investment apps, and customer experience.
At the heart of it all, our Best Buy Awards are designed to champion the voice of the consumer and help you make better, more informed choices about investing.
How are the Best For Low-Cost ISA winners chosen?
Winners are selected through laser-focused cost analysis, stripping back to pure numbers without considering service quality or features. The methodology analyses ISA charges across different portfolio sizes to identify which providers offer the best value, whether you're starting small or investing larger sums.
Winners are determined by calculating the total cost of investing, including platform fees and ready-made investment solution charges. This award focuses exclusively on price - for the full picture, including service quality and features alongside value for money, the overall Best Buy ISA Award provides a comprehensive assessment.
Read our full methodology breakdown
Best For Low-Cost ISA Award 2026 Winners
Winners are listed in alphabetical order.
Freetrade
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Modern design which I liked, but navigation could be smoother. Good for what it offers.
IG
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Information is presented really clearly, and the investment tools are actually quite good. The educational content impressed me.
InvestEngine
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Good mobile experience and transparent costs are highlights. Portfolio display could be improved, but overall a competent platform.
Lightyear
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Portfolio display is good, and costs are very transparent. Mobile experience is smooth. The tools are decent, too. More guidance for beginners would be welcome.
Scottish Widows
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The documentation is genuinely excellent - well-organised and informative. Mobile experience is decent too.
Trading 212
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Strong portfolio display and good documentation. Mobile works well. Overall, a solid offering, though the tools could go deeper.
XTB
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Costs are very transparent and the mobile experience is good. Navigation works reasonably well.
FAQs on ISAs
What fees should I look for when choosing a cheap ISA?
When choosing a cheap ISA, examine platform fees (annual percentage or monthly fixed fee), trading fees (cost per buy/sell transaction), fund charges (ongoing costs of investments held), foreign exchange fees (typically 0.15-1% on international investments), and inactivity fees (some charge if you don't trade). Best Buy Award winners offer competitive combinations of these fees.
Are the cheapest ISAs suitable for beginners?
Some cheap ISAs suit beginners while others don't. InvestEngine (Best Buy winner) is good for beginners wanting simple ETF investing at low cost. However, Lightyear and XTB (also Best Buy winners) suit experienced investors more. Consider whether low costs compensate for less support - sometimes paying slightly more for better guidance helps beginners avoid costly mistakes.
Do cheap ISAs have hidden fees?
Reputable cheap ISA providers don't have hidden fees, but it's important to understand the complete cost structure. Look beyond headline rates to check trading fees, fund charges within investments, foreign exchange fees on international holdings, and any inactivity or admin fees. Best Buy Award winners are transparent about fees, but always read the full fee schedule. Calculate your total annual cost based on your expected trading pattern and portfolio size.
What's the difference between platform fees and investment costs?
Platform fees are what you pay the ISA provider for holding your investments (typically 0-0.45% annually or fixed monthly fees). Investment costs are ongoing charges within the funds, ETFs or shares you hold (typically 0.05-1.5% annually). Total cost combines both. Some cheap platforms have low platform fees but limited investment choices with higher costs. Best Buy winners offer competitive total costs, including both elements.
Can I transfer my ISA to a cheaper provider?
Yes, you can transfer your ISA to a cheaper provider while keeping tax-free benefits. Contact the new provider who'll handle the transfer - never withdraw and reinvest as you'll lose ISA tax benefits. Transfers typically take 2-6 weeks. Check for exit fees at your current provider and whether your investments are available at the new provider. Many Best Buy Award winners accept ISA transfers and some offer incentives for switching.
Which ISA is best for you?
Are you looking to open an ISA but not sure who to turn to? Check our ISA comparison table to see what's out there! Read our full reviews for information on fees and charges, investment range, real customer reviews and more.
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