ISA Comparison

Best ISA for Beginners UK
(2026) — Compared

A Stocks & Shares ISA lets you invest up to £20,000/year completely tax-free. Here are the best platforms for beginners — compared on fees, minimums, and ease of use.

Quick verdict

  • Best overall for beginners: Trading 212 — zero fees, £1 minimum, free ISA
  • Best for index fund investors: Vanguard — ultra-low costs, investor-owned
  • Best for research & choice: Hargreaves Lansdown — widest selection
  • ISA allowance 2025/26: £20,000 per year (all growth tax-free)
  • All three platforms are FCA regulated and covered by FSCS protection (up to £85,000)

ISA platform comparison

PlatformMin. investmentFeesBest forKey advantage
Top pickTrading 212£1£0 (no commission)BeginnersZero fees, fractional shares, clean app
Vanguard£100/month or £500 lump sum0.15% platform fee + fund feeLow-cost index fundsOwned by investors, ultra-low ongoing costs
Hargreaves Lansdown£250.45% platform fee + fund feeResearch & fund choiceWidest fund selection, best research tools

Fees shown are platform fees only. Individual fund charges apply on top. Always check the latest fees on each platform before opening an account. Information accurate as of April 2026.

How to choose the right ISA platform

If you're investing under £500/month

Choose Trading 212. With zero platform fees and no commission, it's the cheapest option for smaller portfolios. The £1 minimum means you can start immediately without saving up a lump sum. The app is intuitive and designed for beginners.

If you want a simple "set and forget" approach

Choose Vanguard. Their platform only offers Vanguard funds, which simplifies the choice. The FTSE Global All Cap Index Fund gives you exposure to over 7,000 companies worldwide. The 0.15% platform fee is among the lowest in the UK for a fund platform.

If you want the widest choice of investments

Choose Hargreaves Lansdown. They offer thousands of funds, shares, investment trusts, and ETFs. Their research tools and fund ratings help you make informed decisions. Higher fees, but worth it if you want extensive choice and premium research.

ISA allowance 2025/26

Annual allowance

£20,000

Per tax year (April to April)

Tax on ISA growth

£0

No CGT, no dividend tax

The £20,000 allowance is shared across all ISA types (Cash, Stocks & Shares, Lifetime, Innovative Finance). You can split it however you like. Unused allowance does not carry over.

See how your ISA could grow over time with our free calculator.

Open ISA growth calculator
Our top pickAffiliate

Trading 212 — Best ISA for beginners

Start from £1 with zero commission. No platform fees on the Stocks & Shares ISA. FCA regulated with FSCS protection up to £85,000. Used by over 2 million UK investors.

No commissionStart from £1Free ISAFCA regulatedFSCS protected
Open a free ISA

Capital at risk. This is not financial advice. Affiliate link — we may earn a commission at no extra cost to you.

Related guides

Frequently asked questions

For illustrative purposes only — not financial advice. Past performance does not guarantee future results.

Capital at risk when investing. Tax treatment depends on individual circumstances and may change.

CompoundWise is not authorised or regulated by the Financial Conduct Authority. We may earn a commission from partners featured on this site.

If you need advice tailored to your personal circumstances, consult an FCA-authorised financial adviser.

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