Starting to invest with just £100 can feel daunting, especially in the UK, where platform fees, FX charges, and hidden costs can quietly eat into a small portfolio. When every pound matters, choosing the right low-fee, FCA-regulated stockbroker isn’t just helpful; it is essential.
This guide is for UK beginners looking for the best low fee UK stock brokers for beginners in 2026. We compare low-fee brokers UK investors can use to invest £100 UK, explain brokerage costs, and highlight platforms that work well for small portfolios. We’ll also look at FX fees, fractional shares, FSCS protection, and the best UK investment apps with low fees for beginners getting started.
Top low-fee UK brokers suitable for £100 traders
Not all brokers are suitable for small amounts. High dealing charges and monthly platform fees can wipe out gains rapidly. The brokers below stand out among UK stock brokers with the lowest fees for small UK investors. These platforms are also considered some of the cheap stock brokers UK 2026 investors compare when searching for reliable UK brokers for small investments.
- Trading 212: Best overall for £100 traders in 2026
- Freetrade: Simple and beginner-friendly
- eToro: Best for social and copy trading
- Webull UK: A growing low-cost option
- XTB: Best for low-FX international trades
| Broker | Trading 212 | Freetrade | eToro | Webull UK | XTB UK |
|---|---|---|---|---|---|
| FCA regulated | Yes | Yes | Yes | Yes | Yes |
| Minimum deposit | £1 | £100 app-based | £8 | £0 | £0 |
| Stock commission | £0 (UK & US) | £0 UK shares | £0 | £0 | £0 within limits |
| Fx fee- approx. | 0.15% | 0.45% | 0.45% | 0.15% | Low variable |
| Fractional shares | Yes | Limited, selected stocks | Yes | Yes | No, stocks |
| Isa available | Yes | Yes | No | No | Yes |
| Best for £100 traders | Best overall value, lowest costs, beginners | Simple UK investing, clean app | Beginner’s guide to social and copy trading | Tech-savvy beginners, data-rich app | Low-FX international stock trading |
1. Trading 212: Best overall for £100 traders in 2026
Trading 212 is widely considered the best UK broker for £100 traders in 2026. With no dealing fees and extremely low FX charges, it allows nearly all of your money to stay invested.
Fractional shares make it easier for beginners to invest 100 pounds in UK stocks and US shares without needing large amounts of capital.
Trading 212
Regulation: FCA, CySEC, ASIC,and FSC
Min dep:£1, €1, $1
Leverage: 1:30
Spread: Variable
Account type: Invest, CFD, Stock ISA, and more
Assets: Forex, Indices, REITs, Fractional shares, ETFs
Platform: Trading 212 web and mobile trading platform
- £0 commission on UK and US shares
- Fractional shares available
- Low FX fee of around 0.15%
- No inactivity or platform fees
- Very beginner-friendly app
2. Freetrade: Simple and beginner-friendly
Freetrade is popular with casual investors who want a simple experience. Fees are higher than Trading 212 for US shares, but it remains a solid option for UK-only investing and ISA users.
Freetrade
Regulation: FCA
Min dep: $0
Leverage: 100:1
Spread: Variable /Fixed
Account type: GIA, Stocks and shares ISA, PPA
Assets: US treasury bills, ETFS, REITs, Fractional shares, stocks
Platform: Proprietary platform
- £0 commission on UK shares
- FX fee around 0.45%
- £100 minimum via the app
- Clean, easy-to-use interface
3. eToro: Best for social and copy trading
eToro appeals to beginners who want to learn by following experienced investors. While FX fees are higher, it remains one of the best fractional-share UK brokers for small starting amounts.
eToro
Regulation: FCA, CySEC, , ASIC, FINRA, and SEC
Min dep:$50 Leverage: 1:2 to 1:30
Spread: Fixed
Account type: Professional, Retail, Corporate account
Assets: Forex, CFDs,commodities, indices,ETFs
Platform: Proprietary platform
- £0 commission on stocks
- FX fee around 0.5%
- Fractional shares supported
- Copy other investors automatically
4. Webull UK: A growing low-cost option
Webull UK is newer but quickly gaining attention. It suits tech-savvy beginners looking for low costs without monthly fees.
Regulation: SEC, FINRA
Min dep: $0 Leverage: 4:1 to 2:1
Spread: NA
Account type: Individual,Futures, Advisor and more
Assets: cryptocurrencies, ETFs, mutual funds, fractional shares, and equities
Platform: Proprietary platform
- Commission-free trading
- FX fees around 0.15%
- No minimum deposit
- Modern, data-rich app
Looking for broker comparison, check this eToro vs Webull 2026: Which platform is better for traders?
5. XTB: Best for low-FX international trades
XTB is a good option for £100 traders who want to buy US or international stocks and care about keeping FX costs reasonable. There is no minimum deposit, no inactivity fee, and the platform is FCA-regulated, making it a safe and flexible choice for small investors.
- £0 commission on stocks and ETFs, within monthly limits.
- Competitive FX charges compared with traditional UK brokers.
- No minimum deposit or inactivity fees.
- Advanced charts and strong educational tools.
- FCA-regulated with FSCS protection.
Do you need to know which is better, Plus500 vs XTB 2026: Which offers better trading value?
Fee comparison: Trading, FX, and platform charges
Understanding fees is crucial when investing small amounts. Even small charges make a big difference to a £100 trading account in the UK. For small portfolios, FX fees matter most when buying US stocks. Paying 0.5% FX on frequent trades adds up quickly.
- Trading 212: £0 commission, 0.15% FX, no platform fees
- Freetrade: £0 UK trades, 0.45% FX
- eToro: £0 commission, 0.5% FX
- Webull UK: £0 commission, 0.15% FX
- XTB UK: £0 commission within limits, FX fees apply
Avoid brokers charging £8 to £12 per trade, as a single deal could cost over 10% of a £100 investment.
FCA regulation, FSCS safety, and beginner protection
Safety is non-negotiable. Every broker listed here is FCA‑authorised, meaning they must follow strict UK regulations on handling client money.
Why FCA regulation matters
- Client funds are held separately from company money
- Clear risk warnings and fair marketing rules
- Protection against misleading practices
FSCS investor protection
- Covers up to £85,000 per person if a broker fails
- Applies to UK-regulated brokers
- Essential peace of mind for new investors
Extra beginner protections
- Demo accounts, Trading 212, eToro
- Negative balance protection
- No pressure to use leverage
For anyone using a minimum deposit UK broker, these protections make learning to invest far less stressful.
How to choose the best broker for a £100 portfolio?
Choosing the right broker depends on how you plan to invest. Use this simple checklist. For most beginners, Trading 212 ticks every box. As your portfolio grows, you can always switch platforms later.
- Keep fees as low as possible; zero‑commission platforms work best
- Check FX charges if buying US shares
- Look for fractional shares to diversify with small amounts
- Use an ISA if available for tax-free growth
- Test the app usability before committing
- Confirm FCA registration and FSCS protection
Conclusion
For most beginners, Trading212 remains the best UK broker for £100 traders in 2026. Its combination of low fees, FCA regulation, fractional shares, and easy-to-use app makes it ideal for small investors.
The key takeaway is simple: when starting small, fees matter more than anything else. Choose a low-cost UK trading platform, invest consistently, and let time do the work.
Pro tip
If you are ready to start investing with £100, compare UK stock brokers carefully before choosing a platform. Explore low-fee investing platforms that offer FCA protection, low FX charges, and beginner-friendly tools before you open a UK trading account.
Frequently Asked Questions FAQs
1. How much do UK brokers charge for £100 trading?
Low-cost UK trading platforms charge between £0 and £2 per trade. Avoid platforms with high fixed fees.
2. Can you trade stocks in the UK with £100?
Yes, many UK brokers let you trade stocks with £100 through fractional shares and low minimum deposits.
3. Can you grow a portfolio starting with £100?
Yes, regular contributions and low fees can grow £100 into a much larger portfolio over time.
4. Which UK broker has the lowest fees?
Trading 212 and Webull UK currently offer some of the lowest overall costs for small investors, including commission-free trading and competitive FX fees.
5. Can I start investing with £100 in the UK?
Yes, many FCA-regulated UK brokers allow beginners to start investing with £100 using fractional shares and low minimum deposits.
6. Which broker is best for beginners in the UK?
Trading 212 and Freetrade are considered beginner-friendly because of their simple apps, low fees, and easy account setup process.
7. Are UK trading apps safe to use?
Most FCA-regulated UK trading apps follow strict financial rules and offer FSCS protection, making them safer for beginner investors.
8. What fees should UK investors watch for?
UK investors should pay attention to FX charges, dealing commissions, inactivity fees, withdrawal charges, and platform subscription costs.
