Both are FCA regulated and FSCS protected. The real differences are fees, investment range and how each platform feels to use. Here is the honest comparison.
Fees verified July 2026. Capital at risk. Information, not financial advice.
Fund investors who value guidance, tools and phone support.
Beginners building a habit, and first-time buyers using the Lifetime ISA.
| Fee | Fidelity | Moneybox |
|---|---|---|
| Platform fee | 0.35% up to £250k (0.20% above); £90/year flat if under £25k without a regular savings plan | £1/month subscription plus 0.45% platform fee |
| Share dealing | £7.50 per online trade | US stocks available, 0.45% FX fee |
| Fund dealing | Free | Free (fund fees apply) |
| FX fee | 0.75% tiered | 0.45% on US stocks |
| Stocks & Shares ISA | Platform fee applies | Subscription plus 0.45% applies |
| SIPP | Platform fee applies | 0.45% platform fee (0.15% above £100k), no subscription |
| Withdrawals | Free | Free |
| Minimum to start | £25/month or £1,000 lump sum | £1 |
Reviewers highlight helpful phone support and a straightforward transfer process.
The £7.50 share dealing charge and dated parts of the website draw criticism.
Read Fidelity reviews on TrustpilotUsers love the round-ups, the goal-based design and how painless it makes starting. 93% of customers surveyed in 2026 would recommend it.
The combined £1/month plus 0.45% is repeatedly flagged as expensive for small balances.
Read Moneybox reviews on TrustpilotFidelity is a solid full-service choice for fund investors. Fund dealing is free, the ETF and share service fee is capped at £90 a year, and the guidance content is some of the best of the big platforms.
Costs are less friendly if you trade shares often or hold a small account without a regular savings plan. Compare it against AJ Bell if you want similar breadth with lower dealing charges.
Moneybox is designed for getting started. Round-ups, weekly deposits and simple starter portfolios remove the friction that stops most people investing, and its Lifetime ISA is one of the most popular routes to a first home deposit.
The convenience has a price: £1 a month plus 0.45% is one of the higher fee stacks here once your balance grows. It is a great first platform, and many users graduate to cheaper ones later.
A 0.2% fee difference is worth optimising. Knowing whether you are saving enough in the first place is worth far more. Delphina models your pensions, ISAs and investments and tells you where you actually stand.