Both are FCA-regulated and FSCS-protected. The real difference is fees, account types and how each platform feels to use. Verified against each provider’s published charges.
Fees verified July 2026. Capital at risk. Information, not financial advice.
Index fund investors who want the lowest possible total cost and are comfortable with a newer app.
People who want their investments chosen and managed for them, including in a Lifetime ISA or Junior ISA, and who prefer one percentage fee to dealing charges.
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Tick what you need above and we'll tell you which of the two covers it.
Account availability verified July 2026. Capital at risk. Information, not financial advice.
Early adopters praise the zero fees and responsive founding team; roughly 84% of reviews are five stars.
The review base is small and some users want more account types and a web version.
Read Prosper reviews on TrustpilotWe have not verified current review themes, so read recent reviews on independent sites to see what customers say since the Nutmeg brand became J.P. Morgan Personal Investing in November 2025.
For problems customers report, check the most recent reviews, as older ones may refer to the service under the Nutmeg name.
Read J.P. Morgan Personal Investing reviews on Trustpilot| Fee | Prosper | J.P. Morgan Personal Investing |
|---|---|---|
| Platform fee | £0 | Managed styles: 0.75% a year on the first £100k, 0.35% above. Fixed Allocation: 0.45%, then 0.25%. Inc. VAT; fund costs extra |
| Share dealing | Not applicable (funds and ETFs) | No dealing charges (managed service) |
| Fund dealing | Free | No trading charges; underlying ETF costs and market spread apply |
| FX fee | None on GBP fund classes | Not applicable: managed portfolios |
| Stocks & Shares ISA | Free | Stocks & Shares ISA (not flexible), Lifetime ISA, Junior ISA. No cash ISA |
| SIPP | Free | Yes: personal pension (SIPP), from £500 |
| Withdrawals | Free | No exit charge; in-specie transfers out £20 per line of stock |
| Minimum to start | No minimum | £500 (ISA, pension, GIA); £100 (Lifetime ISA, Junior ISA); £10,000 (Income) |
Prosper's pitch is the cheapest total cost of ownership in the UK: no platform fee, no dealing fees, and refunded fund fees on a list of mainstream index funds. For a straightforward global tracker in an ISA or SIPP, the all-in cost really can be zero.
The counterweight is maturity. It is a young platform with a small (if very positive) review base and no individual shares. If that trade-off suits you, the price is unbeatable.
J.P. Morgan Personal Investing is what Nutmeg became. J.P. Morgan bought Nutmeg in 2021 and retired the Nutmeg brand on 3 November 2025. The service works the same way: you choose an investment style, and the portfolio is built and managed for you. It offers a Stocks & Shares ISA, Lifetime ISA, Junior ISA, personal pension (SIPP) and general investment account.
You pay one service fee instead of dealing charges: 0.75% a year on the first £100,000 in the managed styles and 0.35% above that, or 0.45% then 0.25% for Fixed Allocation. On £20,000 that is £150 a year before fund costs. The trade-off is cost against effort: you pay more than a self-directed platform's fee, and in return the portfolio is chosen and rebalanced for you.
It depends on what you hold and how often you trade. Prosper's platform fee is £0, against managed styles: 0.75% a year on the first £100k, 0.35% above. Fixed Allocation: 0.45%, then 0.25%. Inc. VAT; fund costs extra at J.P. Morgan Personal Investing. On dealing, Prosper charges not applicable (funds and ETFs) for shares and free for funds, while J.P. Morgan Personal Investing charges no dealing charges (managed service) for shares and no trading charges; underlying ETF costs and market spread apply for funds. Fees verified July 2026.
Prosper is best for index fund investors who want the lowest possible total cost and are comfortable with a newer app. J.P. Morgan Personal Investing is best for people who want their investments chosen and managed for them, including in a Lifetime ISA or Junior ISA, and who prefer one percentage fee to dealing charges. Both are FCA regulated and covered by the FSCS.
On Prosper's ISA: Free. On J.P. Morgan Personal Investing's ISA: Stocks & Shares ISA (not flexible), Lifetime ISA, Junior ISA. No cash ISA. Prosper offers a flexible ISA and J.P. Morgan Personal Investing does not. Minimums are No minimum at Prosper and £500 (ISA, pension, GIA); £100 (Lifetime ISA, Junior ISA); £10,000 (Income) at J.P. Morgan Personal Investing.
Prosper offers a SIPP (free). J.P. Morgan Personal Investing offers a SIPP (yes: personal pension (SIPP), from £500).
Prosper scores 4.6 out of 5 on Trustpilot (Excellent) from around 300 reviews. J.P. Morgan Personal Investing scores 4.1 out of 5 (Great) from 2,718 reviews, checked 9 October 2026. The review base is small and some users want more account types and a web version. For problems customers report, check the most recent reviews, as older ones may refer to the service under the Nutmeg name.
Yes. UK platforms accept ISA and SIPP transfers in, and you start the transfer with the receiving provider rather than the one you are leaving. Prosper charges free on withdrawals and J.P. Morgan Personal Investing charges no exit charge; in-specie transfers out £20 per line of stock. Transfer as cash and you are out of the market while it settles; transfer in specie and you keep your holdings but it takes longer.
Prosper or J.P. Morgan Personal Investing, the account is the easy part. What decides when you can retire is how much goes in and for how long. Delphina works that out from what you already hold and what you pay in each month.
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