Updated October 18, 2026 · SumCue Editorial Team
ii vs InvestEngine
ii
InvestEngine
Higher score in this comparison
Where ii and InvestEngine differ
| Compare | iiReviewSee alternativesSee alternatives | InvestEngineReviewSee alternativesSee alternatives |
|---|---|---|
| Minimum deposit | £0Lower | £100 |
| Stock trade fee | £3.99 | £0Lower |
| Account fee | £71.88 | £0Lower |
| Markets | Stocks, ETFs, Funds, BondsCovers more | ETFs |
| Regulators | Financial Conduct Authority | Financial Conduct Authority (FCA) |
| Deposit and withdrawal fees | Free transfers in/out; free next-day withdrawals, GBP15 same-day | Free |
| Platforms | Mobile app | Web, iOS, Android |
| Account types | ISA, SIPP, Jisa, Joint | ISA, SIPP, Corporate |
| Interest on cash | 0.8%Higher | 0% |
| Currency conversion fee | 0.75% | Not confirmed |
Same on both: Investor protection (FSCS up to GBP 85,000).
We earn a commission when you sign up through links on this site. Partner status can affect where a brand appears in our rankings. Partners with a live offer in your country come first, then every other brand by score.
Key differences
- InvestEngine scores higher overall: 8.7 vs 8.6.
- Regulators: only ii offers Financial Conduct Authority.
- Regulators: only InvestEngine offers Financial Conduct Authority (FCA).
- Minimum deposit is lower at ii: £0 vs £100.
- Stock trade fee is lower at InvestEngine: £0 vs £3.99.
- Account fee is lower at InvestEngine: £0 vs £71.88.
- Markets: only ii offers Stocks, Funds, Bonds.
- Platforms: only ii offers Mobile app.
- Platforms: only InvestEngine offers Web, iOS, Android.
- Account types: only ii offers Jisa, Joint.
Our verdict on each
ii
ii suits investors who want tax efficient and family accounts with ISA, SIPP and jisa alongside stocks, ETFs and funds through Mobile app. Stock trades cost £3.99 and the account fee is £71.88, so active traders should balance dealing charges against portfolio growth.
InvestEngine
InvestEngine suits UK beginners who want a small, set-and-forget ETF pot with nothing charged for holding or trading. The account fee is £0, the minimum deposit is £100 and the only recurring charge is a management fee of 0.25%. The trade-off is that you hold ETFs and nothing else.
Score breakdown
| Area | ii | InvestEngine |
|---|---|---|
| Cost | 8.6Low entry hurdle with minimum deposit of £0 balanced by dealing charges | 9.0Higher |
| Offer | 8.9HigherChoice across stocks, ETFs and funds held within ISA, SIPP and jisa via Mobile app | 8.8Account fee of £0, stock trade fee of £0 and a minimum deposit of £100. |
| Trust | 8.5HigherOversight from Financial Conduct Authority with cover of FSCS up to GBP 85,000 | 8.3 |
Choosing between them
Pick ii if minimum deposit, markets, and interest on cash matter most.
Pick InvestEngine if cost, stock trade fee, and account fee matter most.
Feature by feature
| Markets | ii | InvestEngine |
|---|---|---|
| Stocks | Yes | No |
| ETFs | Yes | Yes |
| Bonds | Yes | No |
| Funds | Yes | No |
| Account types | ii | InvestEngine |
|---|---|---|
| ISA | Yes | Yes |
| SIPP | Yes | Yes |
| Joint | Yes | No |
| Corporate | No | Yes |
| Jisa | Yes | No |
How they place
| Ranking | ii | InvestEngine |
|---|---|---|
| Investing | 322 of 654 | 298 of 654 |
| Stock and ETF brokers | 234 of 358 | 217 of 358 |
| Stocks and shares ISAs | 17 of 25 | 15 of 25 |
| Pensions and SIPPs | 13 of 23 | 11 of 23 |
Sources behind this comparison
ii
- ii.co.uk: 16 facts, checked September 28, 2026
InvestEngine
- investengine.com: 10 facts, checked September 26, 2026
- blog.investengine.com: 2 facts, checked September 26, 2026
- help.investengine.com: 1 fact, checked September 26, 2026
Every fact side by side
| Fact | ii | InvestEngine |
|---|---|---|
| Features | Mobile app | Fractional shares, Mobile appCovers more |
| Pricing model | Low fees | Commission free |
| Audience | Not confirmed | Beginners |
| Legal entity | Interactive Investor Services Limited | InvestEngine (UK) Limited |
| Headquarters | United Kingdom | United Kingdom |
| Founded | Not confirmed | 2019 |
| Support channels | Phone, Help centre | Email, Help centre |
Robo-advisors
| Fact | ii | InvestEngine |
|---|---|---|
| Management fee | Not confirmed | 0.25% |
| Minimum investment | Not confirmed | £1 |
| Portfolio types | Not confirmed | ETF |
Where each stands against the rest
| Fact | ii | InvestEngine | Median |
|---|---|---|---|
| Minimum deposit | £0lowest quarter | £100above the median | £15 |
| Stock trade fee | £3.99highest quarter | £0at the median | £0 |
| Account fee | £71.88highest quarter | £0at the median | £0 |
| Currency conversion fee | 0.75%above the median | Not confirmed | 0.4% |
| Interest on cash | 0.8%lowest quarter | 0%lowest quarter | 2.875% |
Median across 77 listed providers.
Pros and cons
ii
Pros
- Begin with £0 and invest across stocks, ETFs and funds without funding pressure
- Hold ISA, SIPP and family accounts through ISA, SIPP and jisa in a single provider
- Cover of FSCS up to GBP 85,000 under Financial Conduct Authority for added assurance
Cons
- Account fee of £71.88 applies whether you trade or leave holdings untouched
- Stock trades cost £3.99 versus $0 at ActivTrades
- Foreign trades carry conversion costs of 0.75% on top of dealing charges
InvestEngine
Pros
- No account fee at £0 and no stock trade fee at £0
- Fractional shares and a mobile app let you invest small amounts regularly
- Choose from ISA, SIPP and corporate accounts
Cons
- A management fee of 0.25% still applies, unlike a free commission-free brokerage
- Markets are limited to ETFs, so individual shares are not an option
- Support runs on email and help centre only, with no phone line
Who each suits
ii
Who it suits
- Investors building ISA and SIPP holdings with junior and joint accounts included
- Buy and hold investors focused on shares, funds and bonds with mobile access
Who should look elsewhere
- Traders sensitive to per order costs may prefer ActivTrades where stock trade fee is $0 rather than £3.99
- Investors comparing entry levels may consider XTB with minimum deposit of €0 or eToro with minimum deposit of $50
InvestEngine
Who it suits
- Beginners who want to start small and add to the same pot each month
- Savers putting money into an ISA or SIPP for the long term
- Anyone who would rather hold a diversified basket than pick single shares
Who should look elsewhere
- Traders who want to buy and sell individual shares
- Anyone who wants to speak to support by phone, since support runs on email and help centre only
Country by country
| Country | ii | InvestEngine |
|---|---|---|
| United Kingdom | Yes | Yes |
Questions about each
ii
What does ii charge for share dealing and account holding?+
Stock trades cost £3.99 and the account fee is £71.88. The account fee covers holding of investments across wrappers and applies on top of dealing charges. Check how often you expect to trade before judging value against infrequent use.
Is ii regulated and is money protected?+
ii is provided by Interactive Investor Services Limited and regulated by Financial Conduct Authority. Client cover is FSCS up to GBP 85,000. Protection applies within scheme limits and does not remove market risk, so holdings can still fall in value.
InvestEngine
What does it cost to hold an InvestEngine account?+
The account fee is £0 and the stock trade fee is £0, so there is nothing charged for keeping the account open or for dealing. The one recurring cost is a management fee of 0.25% on the money you hold. Deposits and withdrawals are free.
What is the smallest amount I can invest?+
The minimum deposit is £100, and the smallest investment the platform advertises is £1. Fractional shares are supported, so you can hold a slice of a fund rather than a whole unit. That keeps the starting point low even though the opening deposit is set higher than at many rivals.
Other options to compare
Other matchups
InvestEngine