InvestEngine Review UK (2026): Is It Safe, and Is the Zero-Fee DIY Portfolio Really Free?

InvestEngine is safe in the sense that matters — it's FCA-authorised and FSCS-covered — and its DIY portfolio really is fee-free. But "free" here has a specific shape, and there are three limitations worth knowing before you move money across: it's ETF-only, it keeps the interest on your uninvested cash, and its Managed portfolios aren't open to new clients right now.

This review is based on InvestEngine's own published pricing, ISA, SIPP and help pages as of August 2026, plus how it compares to the platforms we've already covered. Where we haven't tested something ourselves, we say so.

Some links in this article are affiliate links. If you sign up through them we may earn a commission — at no extra cost to you. It never changes which products we recommend.

TL;DR

• Cost: No platform fee, no dealing fee, no FX fee, no withdrawal fee on DIY portfolios. You pay ETF ongoing charges only, from 0.03% a year (InvestEngine, August 2026).
• Safety: InvestEngine (UK) Limited, FCA firm reference number 801128; eligible clients covered by the FSCS up to £85,000.
• What you can hold: ETFs only — 870+ of them. No individual shares.
• The hidden cost: Uninvested cash earns you nothing; InvestEngine retains the interest.
• Accounts: Stocks & Shares ISA, SIPP, General Investment Account, Business Account. No Junior ISA.
• Minimum: £100 to start; Savings Plans from £20 a week or £50 a month on the SIPP.
• Current gap: Managed portfolios and LifePlans are unavailable to new clients as of August 2026.

Is InvestEngine safe?

Yes, in regulatory terms. InvestEngine (UK) Limited is authorised and regulated by the Financial Conduct Authority, firm reference number 801128, and states that eligible clients are covered by the Financial Services Compensation Scheme up to £85,000. The FSCS is the UK's statutory safety net: if an authorised firm fails, it compensates eligible customers up to a set limit.

Two things people conflate, so let's separate them:

FSCS protection covers firm failure, not investment losses. If InvestEngine went under, the £85,000 investment limit applies per person, per firm. If a global equity ETF you hold falls 30%, that's market risk and no compensation scheme covers it. This is true of every investment platform.

The £85,000 investment limit is different from the deposit limit. UK cash deposits are protected to £120,000 per person per firm, but investments — including ETFs held in a stocks and shares ISA — stay at £85,000 (FSCS). Worth knowing if you're comparing an investing platform to a cash ISA.

On the softer signals: InvestEngine says it's trusted by 100,000+ customers, holds an "Excellent" Trustpilot rating from 4,800+ reviews, and has been a Which? Recommended Provider three times, most recently in 2026. Those are the company's own claims about third-party recognition, and we've cited them as such rather than verified each award independently.

Is it actually free? The honest fee breakdown

The DIY portfolio is genuinely free of platform charges, and that's unusual. Here's every fee, and where the money actually comes from.

So how does it make money? Three ways, on its own account: the 0.25% Managed portfolio fee, its Business account offering, and — the one that affects DIY users directly — the interest on uninvested cash. InvestEngine's costs page is upfront about this: uninvested cash you hold with it "doesn't generate returns", and the company retains the interest.

Is that a big deal? It depends entirely on how you use the account. If you pay in and invest immediately, your cash balance sits near zero and it costs you nothing. If you habitually park £5,000 waiting for a "better entry point", you're forgoing roughly £228 a year at current rates — Trading 212's easy-access cash ISA was paying 4.56% AER as of 18 August 2026 (MoneySavingExpert), which is a reasonable benchmark for what idle money could earn elsewhere.

That's the trade. A fee-free platform for invested money, and a small penalty for uninvested money. For a disciplined regular investor, it's a good deal.

What you can and can't hold

ETFs, and only ETFs. More than 870 of them, from iShares, Vanguard, Amundi, Invesco, Fidelity and 18-plus providers in total. An exchange-traded fund is a single fund that holds a basket of investments — a global tracker like a FTSE All-World ETF is one purchase that gives you thousands of companies.

For most beginners, ETF-only is a feature, not a bug. A two- or three-fund portfolio of broad trackers is a perfectly good lifetime strategy, and removing individual shares removes the temptation to stock-pick badly.

But it's a hard limit, and worth being clear-eyed about:

• No individual company shares. If you want to hold, say, Take-Two or Nvidia directly, InvestEngine can't do it.
• No investment trusts or open-ended funds. ETFs only.
• No Junior ISA. If you're investing for a child, InvestEngine isn't the platform — see our best Junior ISA guide instead.
• Managed and LifePlan portfolios are closed to new clients as of August 2026. If you specifically wanted a hands-off, built-for-you portfolio, that door isn't open right now. Check before signing up, since this could change.

Fractional units mean your whole contribution gets invested. Pay in £50 and you'll own £50 of ETFs, not £43 plus £7 of loose change.

The ISA, in practice

InvestEngine's Stocks & Shares ISA is fully flexible — you can withdraw and replace money in the same tax year without it counting twice against the £20,000 annual allowance, and the platform tracks your remaining replacement capacity. Not every ISA does this, and it's a genuinely useful feature if you might need the money.

Transfers in are free, but with an important limitation: InvestEngine can only accept in-specie transfers (moving investments across without selling them) for ETFs it already offers. Individual shares, open-ended funds and anything else get sold to cash by your existing provider first, which means time out of the market and a realised position you didn't choose. If your current ISA is mostly non-ETF holdings, factor that in.

Savings Plans automate regular contributions and buy according to your target weights, which is the closest thing InvestEngine has to Trading 212's Pies.

The SIPP

InvestEngine's personal pension has no account fee either — you pay only ETF costs. That makes it one of the cheapest SIPPs in the UK for someone building an ETF portfolio, which is why it features in our best SIPP for beginners guide.

The details that matter:

• £100 minimum to open, with regular contributions from £20 a week or £50 a month.
• Relief at source: InvestEngine claims 20% basic-rate tax relief from HMRC for you automatically. It says this takes six to eleven weeks to land, which surprises people expecting it instantly. Higher and additional-rate taxpayers claim the rest through Self Assessment.
• Transfers in are accepted from most major pension providers. Your old provider will usually sell your investments first, so expect a period out of the market.
• No employer contributions. InvestEngine accepts personal contributions only, as of August 2026. If you want your employer paying into it, this isn't the right home for a workplace pension.
• Access from 55, rising to 57 in 2028. Eligibility is 18 to 75, UK residents.

That employer-contribution gap is the biggest practical limitation. It makes the InvestEngine SIPP a good place for your own pension top-ups and old pot consolidation, not a replacement for a workplace scheme.

Who InvestEngine suits — and who should skip it

Open one if:

• You want a global ETF portfolio and nothing else, at the lowest realistic cost.
• You invest regularly and put money to work as soon as it lands.
• You want a fee-free SIPP for personal contributions or consolidating old pensions.
• You're already using another platform for individual shares and want a cheap second ISA. We compare the two directly in InvestEngine vs Trading 212.

Look elsewhere if:

• You want individual shares — Trading 212 does both shares and ETFs with no platform fee.
• You keep a big cash buffer inside your investing account and want interest on it.
• You want a ready-made managed portfolio, which isn't available to new clients right now.
• You need a Junior ISA or a home for employer pension contributions.

How to get started

1. Decide which account you need first — ISA if you're investing your own money and haven't used your £20,000 allowance, SIPP if it's retirement money you won't touch until at least 55.
2. Open the account at InvestEngine. You'll need photo ID and your National Insurance number; it takes about 10 minutes.
3. Fund it with at least £100 to open a portfolio.
4. Pick your ETFs. For most beginners that means one broad global tracker, and resisting the urge to add more. Our best ETF for beginners UK guide covers the main options.
5. Set up a Savings Plan so contributions and buying happen automatically — this is what stops cash sitting idle and earning you nothing.
6. Transfer old accounts last, once you're happy with the platform, and check what your existing provider charges to let money leave.

One thing to watch before April 2027

If you're weighing InvestEngine against a cash ISA, note that the ISA rules change on 6 April 2027: the cash ISA allowance drops to £12,000 a year for under-65s, interest on cash held inside a stocks and shares ISA gets a flat 22% charge, and under-65s lose the ability to transfer investment ISA money back into a cash ISA (GOV.UK). Since InvestEngine doesn't pay you interest on cash anyway, the 22% charge is largely academic here — but the transfer restriction is worth understanding before you commit money. We've written it up in full in the ISA one-way door.

The bottom line

InvestEngine does one thing, does it cheaply, and is honest about how it makes money. For a regular investor building an ETF portfolio in an ISA or SIPP, the total cost is about as low as UK retail investing gets. The ETF-only restriction and the uninvested-cash policy aren't hidden — they're just the price of the zero-fee model, and they'll suit some people and rule it out for others. Decide which you are before you transfer anything across.

This is general information, not financial advice. Fees, features and availability are as published by InvestEngine as of 20 August 2026 and can change — confirm the current terms on the provider's own site before signing up. Investments can fall as well as rise and you may get back less than you put in. Do your own research and consider speaking to a qualified adviser for your situation.

Last updated: 20 August 2026.