Interactive Investor Review

Written by Elizabeth Anderson
Lead Writer for the UK

Reviewed by Blain Reinkensmeyer
Managing Partner

Fact-checked by Steven Hatzakis
Director of Online Broker Research

Edited by Jeff Anberg
Senior Editor

September 15, 2026

  Fact Checked

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Elizabeth Anderson
Lead Writer for the UK

Elizabeth Anderson is the lead writer and researcher for U.K. content on StockBrokers.com. She has been a financial journalist for more than a decade and has written for major publications including BBC, The Times, and Bloomberg.

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Your capital is at risk.

Interactive Investor (ii) is a flat-fee U.K. platform built for long-term investors and pension savers rather than small starters or day traders. Every plan covers a stocks and shares ISA, a SIPP, and a trading account, and the Core plan costs £5.99 a month for portfolios up to £100,000. That fee is good value for a large pot, but it makes small portfolios expensive next to platforms that charge nothing. The SIPP takes company contributions and allows withdrawals through lump sums, drawdown, and flexible income, which the free SIPPs from Trading 212 and Freetrade don't offer.

The website carries TradingView charts and Morningstar coverage of more than 1,500 companies, however none of those chart tools reach the mobile app. There are no fractional shares, no cash ISA, and the interest on uninvested cash is low. For an investor with more than £25,000, or anyone moving a pension who wants full drawdown and a phone line to call, ii still makes a strong case, and my full review breaks down the fees, platform, and research in detail.

verified#1 Website

• Minimum Deposit: £1
• ISA: Yes
• SIPP: Yes

Ratings Awards Historical Ranking

4.5

OVERALL SCORE info

Investment Choices
Charges & Fees
Website
Education
Mobile App
Ease of Use

Check out StockBrokers.com's picks for the best UK investment platforms in 2026.

#1 Website

Winner

2026	#2
2025	#1
2024	#1
2023	#13
2022	#11
2021	#11
2020	#3

Why you can trust us

Led by Elizabeth Anderson, Lead Writer and Researcher, the StockBrokers.com research team for the U.K. collects data and tests products on an ongoing basis. We review the tools and features most important to U.K. investors – including beginners, casual investors, passive investors, and active traders.

We collect and track data on trading charges, fees, and interest rates to make it easier to understand the cost of investing in the U.K. We analyze a wide range of savings and investment offerings, like ISAs, SIPPs, investment portfolios, pensions, and active trading accounts. We hand-collect and audit data across more than 50 variables in our coverage of the best U.K. investment platforms.

Our researchers open personal brokerage accounts and test all available platforms on desktop, web, and mobile for each broker reviewed on StockBrokers.com. Learn more about how we test.

Table of Contents

Pros and cons

My top takeaways for Interactive Investor in 2026:

• Interactive Investor's Core plan costs £71.88 a year plus £3.99 a share deal, and works out cheaper than a 0.3% platform fee once your portfolio passes £25,000.
• There are around 17,800 investments across 11,677 shares, 3,443 funds, 2,413 ETFs, and 265 investment trusts, plus 67 gilts and 20 corporate bonds you can buy directly.
• Uninvested sterling earns 0.8% in the trading account and 1.1% in the ISA on the first £20,000, which is low against newer platforms such as Trading 212 and XTB.
• The website's TradingView charts carry 104 indicators and compare holdings over 10 years, and none of those tools exist in the mobile app.
• The Plus plan at £14.99 a month includes free Junior ISAs for all your children, five free accounts for family members, and one free trade a month.

Interactive Investor fees

ii is known for its flat-fee account, so if you have a large portfolio, that flat fee may be the strongest reason to pick it. There's no free account, unless a family member who already pays the fees gifts you one. You choose from three plans: Core at £5.99 a month, Plus at £14.99, and Premium at £39.99. Over a year, that comes to £71.88, £179.88, and £479.88. You can start with as little as £1.

Plans: Core is for portfolios worth up to £100,000, and covers the ISA, SIPP, and trading account. Plus is aimed at investors with more than £100,000, and adds free Junior ISAs, five free family accounts, and one free trade a month. Premium is for people who trade often and want the best features and FX rates, and it'll include the ii360 app once that launches later in 2026.

Dealing charges: On Core, funds cost £3.99 a trade, and so do U.K. and U.S. shares, gilts, and corporate bonds. Shares from other international markets cost £9.99. On Plus, funds drop to £1.49, U.K., U.S. shares stay at £3.99, and other international shares cost £7.99. On Premium, funds are free, U.K. and U.S. shares cost £2.99, and other international shares cost £5.99. There's no discount for trading more, and telephone dealing costs £49.

Regular investing: There's no dealing charge on regular investing or on dividend reinvesting, whatever plan you're on. You don't have to put in the same amount each time either, so there are ways to trade commission-free on ii.

If you're a new investor putting in a very small amount, ii may not be the best fit, because of the £5.99 minimum monthly fee on top of trading fees. I'd say it becomes most valuable above £25,000, which is where a 0.3% percentage fee reaches £75 a year against ii's £71.88.

Currency conversion: FX is 0.75% on Core, and on Plus for amounts up to £50,000. Above that, the Plus rate drops to 0.25%. On Premium, it's 0.25% throughout. The 0.75% rate is high, so if you buy a lot of overseas shares, there may be cheaper platforms out there.

Withdrawals: Withdrawing in pounds or euros is free. Any other currency costs £15, as does an urgent withdrawal. A sterling withdrawal requested before 2pm reaches your bank account by the end of the next working day. After 2pm, it takes two working days.

Interest on cash: ii pays very low interest on cash next to newer platforms such as Trading 212 or XTB. In the trading account, you earn 0.8% on cash up to £20,000, rising to a top of 1.81% above £100,000. In the SIPP, it's 1.7% on the first £20,000, rising to 2.32% over £100,000. Those rates are for sterling. U.S. dollar cash earns less, starting at 0.2% and topping out at 2% on amounts over £100,000 in a SIPP.

Miscellaneous fees: Real-time prices through Quotestream cost £20 plus VAT a month. There's no inactivity fee beyond the monthly plan fee itself.

Feature	Interactive Investor
Minimum Deposit	£1
Share Trading: 0-9 Deals/ Month	£3.99
Share Trading: 10-19 Deals/ Month	£3.99
Share Trading: 20+ Deals/ Month	£3.99
Annual Platform Fee (Funds): £0 - £250,000	£71.88 / £179.88
Annual Platform Fee (Funds): £250K-£500K	£179.88
Annual Platform Fee (Funds): £500,000 - £1m	£179.88
Annual Platform Fee (Funds): £1m and over	£179.88
Bonds - Corporate - Fee	£3.99
Bonds - Government (Gilts) - Fee	£3.99
ETFs - Fee	£3.99
Investment Trusts - Fee	£3.99
Telephone Dealing Fee	£49

Continue Reading

Range of investments

ii gives you a lot more to choose from than the newer app-only platforms. There are 11,677 shares, 3,443 mutual funds, 2,413 ETFs, and 265 investment trusts, so around 17,800 investments total. The shares span the U.K., Europe, North America, and the Asia-Pacific region, with Australia, Hong Kong, and Singapore making up 2,700 of them between them.

Interactive Investor's web-based Share Screener lets you filter more than 12,000 shares by sector, region, market cap, P/E ratio, and dividend yield, with Morningstar and Quantamental ratings shown for each company. Bonds and gilts don't appear here, so you have to search for those separately by name.

What's not available: There are no fractional shares on ii, which is a drawback if you want to invest small amounts. ii is a traditional broker, so there's no crypto, no spread betting, and no CFDs.

Bonds and gilts: ii does let you buy and hold corporate bonds and gilts directly, rather than getting exposure through an ETF as you would on many of the newer platforms. There are 67 gilts and 20 corporate bonds, which is a decent range. You can hold them in a SIPP, ISA, Junior ISA, or trading account, and trade them online. They're hard to find on the website, though. There's no obvious spot for bonds or gilts on the screener page, which only lets you filter by shares, funds, investment trusts, and ETFs. You have to search separately on the Knowledge page, then take the exact name and put it into the Find & Invest tab at the top of your account when logged in. This is one area ii could improve.

Ready-made portfolios: The ii Managed Portfolios for SIPPs launched in November 2025, having previously run only inside the stocks and shares ISA as the ii Managed ISA. They're managed by Aberdeen, which owns ii. The portfolios come in five levels depending on your risk tolerance, from level 1 cautious to level 5 very adventurous, and two styles, sustainable or index. That makes 10 portfolios in total. Annual charges run between 0.13% and 0.21%, which is on the low side for ready-made funds. That's on top of the monthly platform fee.

Elizabeth's take:

"I came to ii for the fixed platform fee, particularly on the SIPP, and I'm now moving one of my own pensions across. It suits people with larger portfolios, most likely with a SIPP, who want a traditional broker and a phone line to call rather than an app built for day traders."

Elizabeth Anderson
Lead Writer for the UK

Interactive Investor SIPP

The fixed platform fee is what brought me to ii's SIPP in the first place, and the monthly charge is the same plan fee, £5.99 on Core. ii's SIPP is built for withdrawing as well as saving. There are plenty of withdrawal options, including lump sums, income drawdown, and flexible income withdrawals, and the SIPP takes company contributions too. Those options make it a strong rival to free SIPP providers such as Freetrade or Trading 212, which don't let you withdraw from their SIPPs.

I've started moving one of my SIPPs to ii. I sold my holdings to cash first, to get the transfer done as quickly as possible, and ii told me it could take six weeks as cash, or longer if I moved it as investments. It's been about a week so far, and I've had messages in the ii app letting me know they've received my request.

Junior ISA and other accounts

A Junior ISA comes free with the Plus or Premium plan, for all of your children. There's no Junior SIPP. The investment options in the Junior ISA are the same as on the adult plan, with a mix of funds, investment trusts, ETFs, and stocks. The ready-made portfolios you get in the SIPP and stocks and shares ISA aren't available in the Junior ISA. Instead, ii gives you a list of Quick-Start Funds, run by external fund managers and designed as a simple way to start investing.

Feature	Interactive Investor
Share Trading	Yes
CFD Trading	No
ETFs	Yes
Mutual Funds	Yes
Bonds - Corporate	Yes
Bonds - Government (Gilts)	Yes
Investment Trusts	Yes
Spread Betting	No
Crypto Trading	No
Advisor Services	No

Interactive Investor ISA review

ii's stocks and shares ISA is included in every monthly plan. There's no cash ISA. The wrapper comes with free regular investing, access to the full investment range, and a flat fee that favours larger pots.

Interactive Investor stocks and shares ISA

ii's stocks and shares ISA costs £5.99, £14.99, or £39.99 a month depending on your plan, or it's free if another family member pays the monthly fee and gifts you a family account, which a Plus customer can do for up to five people. Dealing charges follow your plan, so a U.K. share deal is £3.99 on Core. Regular investing is free, which is a real plus for ii, and it doesn't have to be the same amount each month. ii also hands out trading credits. I've had £100 worth so far.

You can hold anything from the main range in the ISA. That means shares, funds, ETFs, investment trusts, gilts, and corporate bonds, plus the 10 ii Managed Portfolios if you'd rather not pick your own. As everywhere on ii, there are no fractional shares in the ISA.

Interest on cash: Uninvested sterling in the ISA earns 1.1% on amounts up to £20,000, rising to a top rate of 2.12% above £100,000. That's still low by the standards of the newer platforms.

Cost as the pot grows: Because the fee is flat, the ISA gets cheaper in percentage terms the more you hold. On Core, you pay £71.88 a year whether the ISA holds £30,000 or £100,000. For a small starter ISA, a platform with no platform fee will be cheaper.

ISA flexibility and transfers

The ii ISA isn't flexible, which may put off anyone who likes that option. It means if you take money out of your ISA, you can't put it back later without dipping into your standard annual ISA allowance.

ii handles transfers across SIPPs and ISAs, both in and out, in full or in part if your current provider allows partial transfers. Moving your holdings as cash usually takes up to six weeks, and as investments up to 12 weeks. You start the transfer online, and it's free.

Mobile trading apps

Interactive Investor's mobile app is very simply designed and easy to use, and it runs on both iPhone and Android. It takes about seven steps to get from the home screen to placing a full trade. That's easy enough, though you have to pick the account type first, which feels a little clunky compared with dealing straight from the account you're already in. Setting up regular investing is simpler still. You just tap 'Invest monthly', and since regular investing is free, you pay no dealing commission on those monthly trades.

Order types: You get limit orders and stop loss orders. There's also a 'fill or kill' order, which gives you the chance to trade when markets are closed.

The app's order ticket, reached after selecting an account, with Buy, Sell, Limit Order or Stop Loss, and Fill or Kill options. You choose the account you're dealing in first, here an ISA, before placing the trade.

Charting: The charting on the mobile app is very basic. The chart just gives you an overview of an investment over the past day, month, three months, six months, one year, two years, or three years. There are no drawing tools and no indicators, and you can't overlay charts. The 104 indicators on ii's website don't carry across. The bigger flaw is that you can't see how your own investment has performed, only how the fund or stock has done overall. I find that annoying.

A share price view in the app, showing Vodafone's intraday chart with the 1D to 5Y time ranges. The mobile charts cover these fixed periods only, with no indicators, no drawing tools, and no way to overlay one investment on another.

Portfolio tracking: Portfolio performance over time is the real gap. There's no chart on the home page or the portfolio page showing how your portfolio has done. You can see how individual investments are doing at a glance, and you can customise what ii shows, such as daily change, overall percentage gain or loss, and number of holdings, up to five things at once.

The app's Portfolio overview with privacy mode switched on, starring out the account balances. It's a clean home screen, but there's no chart here showing how the overall portfolio has performed over time, which is the app's biggest gap.

Alerts: Price alerts can come by email or SMS. You have to set them on the website, not in the app, which seems like an obvious miss. Automatic limit buy orders, to buy at the price you want to pay, can be set from both the app and the website.

Privacy mode: One thing I like about the app is privacy mode, which stars out your money. That way you can show someone your account and what you invest in without showing how much you've put in.

Trading platforms

ii's website is where the platform is at its best. It's a far better place to analyse an investment than the app, which has no chart tools at all. The website charts are powered by TradingView and are open to everyone, whatever plan you're on. You can compare the recent performance of several companies or ETFs on one chart going back up to 10 years, add text notes, and choose from 104 indicators to pick out different trends. Charts also show corporate events, and you can overlay one stock on another, though not an index.

The website's TradingView-powered charts let you overlay several holdings on one view and compare their performance, with 104 indicators and drawing tools down the left. Here, an MSCI All Country ETF is charted against two other investments over a single day. Prices carry a note that they're delayed by at least 15 minutes.

Trading on the website: You can't trade with real-time pricing on the website, because prices are delayed by 15 minutes. The exception is buying shares or ETFs on the London Stock Exchange, where you get live pricing. Every other market runs on that delay. You can't place trades outside normal market hours either. Price alerts are set from the website rather than the app, and the website is also where you'll find the screeners for shares, funds, and ETFs.

Desktop platform and demo account: There's no desktop platform and no demo account to try ii before you commit. You'll pay the monthly fee from the start, unless a family member gifts you a free account.

ii360: ii told me ii360 is a new advanced trading platform launching later in 2026. It's a separate app aimed at highly experienced investors. You'll be able to get ii360 by choosing the Premium plan, or add it as a bolt-on to your existing plan. ii says it'll carry real-time market data, advanced technical charts, and a broader range of instruments. Until it lands, ii is a platform for buy-and-hold and long-term investors rather than day traders.

Feature	Interactive Investor
Web Platform	Yes
iPhone App	Yes
Android App	Yes
Stock Alerts	Yes
Charting - Indicators / Studies	104
Charting - Drawing Tools
Charting - Notes	Yes
Charting - Display Corporate Events	Yes
Charting - Stock Overlays	Yes
Charting - Index Overlays	No

Research

ii has teamed up with the independent research provider Morningstar, and the result is excellent. Morningstar's experts cover more than 1,500 companies worldwide in detail. On an individual share, you can see its rating, whether it's five stars or below, whether it's trading at a premium or a discount right now, and how much uncertainty or risk sits behind it.

Screeners: There are screeners for ETFs, stocks, and funds. You can filter by sector, region, market cap, P/E ratio, dividend yield, performance, price, valuation, Morningstar rating, and Trading Central rating. I couldn't filter by theme, only by the more traditional options. The newer platforms make it easier to search by a theme such as electric vehicles or defence. You can sort by sector on ii, but they're the traditional ones, energy, financial services, healthcare, utilities, and so on. Bonds and gilts don't show up in the screener at all, so you need to know the exact name of the one you want.

Real-time data: Live prices aren't free on ii. You pay £20 plus VAT a month for live market data through Quotestream, and ii says the ii360 app will bring real-time data to Premium customers when it launches later in 2026. Without Quotestream, prices are delayed by 15 minutes, apart from live quotes when you buy on the London Stock Exchange.

Other research: Alongside the Morningstar share research, ii lists fund research reports, ETF research, and bond research, and it shows a portfolio allocation breakdown of your holdings. Stock alerts are available, set from the website.

Education

ii is strong on educational content and guides. It launched a digital investment coach within the past year. You answer five questions online, such as how much risk you want to take and how far along you are in your investing, and it gives you an investor profile. I came out as 'Sorted & Steady', which ii describes as an investor with a long-term plan. From there, you land on a dashboard of articles, videos, and stories picked for your profile, with bite-size learning checklists alongside them.

Videos and guides: Titles include things like 'How to make £10,000 a year from your investments', and you can read each one as a transcript too, which I prefer, so it's nice to have the option. The videos are short, which I think works well for investors who just want the basics without a long sit. Most are made in-house by staff. ii also works with Morningstar on more in-depth content. Over on YouTube, ii has more than 1,400 videos, posted often, usually weekly, on topics like six investment problems and what multi-currency investing means.

Webinars: There are regular monthly webinars too, and you can watch recordings of past ones in the Learn section of the website.

Calculators: There's no obvious calculators section, but I found a handy pension calculator on the SIPP pages. Put in your age, current pension pot, and planned monthly contributions, and it gives you an idea of your total pot at your target retirement age. When I tried it, I was pleasantly surprised by the estimate for my own future pot.

Customer support: Phone support is open to both current and prospective customers, which the newer apps usually don't offer. Live chat is for current customers only, and there's email support too. Support isn't 24/7, and there's no advice service.

Feature	Interactive Investor
Education (Share Trading)	Yes
Education (Funds)	Yes
Education (Retirement)	Yes
Client Webinars	No
Client Webinars (Archived)	No

Final thoughts

verified#1 Website

• Minimum Deposit: £1
• ISA: Yes
• SIPP: Yes

Ratings Awards Historical Ranking

4.5

OVERALL SCORE info

Investment Choices
Charges & Fees
Website
Education
Mobile App
Ease of Use

Check out StockBrokers.com's picks for the best UK investment platforms in 2026.

#1 Website

Winner

2026	#2
2025	#1
2024	#1
2023	#13
2022	#11
2021	#11
2020	#3

The fixed fee is why I chose ii, and it's still the first reason to pick it. If you have a large portfolio, and most likely a SIPP, the flat monthly plan means your platform charge stops growing with your pot. That's less of a selling point than it used to be. Trading 212 and Freetrade have both brought in free SIPPs over the past year. Those free SIPPs don't let you withdraw. ii's does, through lump sums, drawdown, and flexible income. And there's a phone line to call, which most of the newer apps don't give you.

ii's website is the second reason. It's our 2026 pick for the best website, and the TradingView charting and Morningstar research are what earn it. The mobile app is simply designed and easy to use for placing a trade or setting up monthly investing. But it has no charting tools and no way to see how your own portfolio has done over time, so the website is where I'd do any analysis.

Cash earns 0.8% in the trading account on the first £20,000, which is low against the newer platforms. The 0.75% FX fee on Core and Plus adds up if you buy a lot of overseas shares, and live prices cost £20 plus VAT a month on top.

If you're a long-term investor with more than £25,000, or you're moving a pension and want proper drawdown options and someone to phone, I'd point you to ii. If you're starting out with small monthly amounts, want fractional shares, or trade every day, look at a platform with no monthly fee instead.

Interactive Investor Star Ratings

Feature	Interactive Investor
Overall Rating
Charges & Fees
Investment Choices
Mobile App
Website
Ease of Use
Education

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About the Editorial Team

Elizabeth Anderson, lead writer and researcher for the U.K. market, has been a financial journalist for more than a decade. In addition to her work with StockBrokers.com, she has written extensively for major publications including BBC, The Times, and Bloomberg. A keen investor herself, she is passionate about helping people understand finance and investing.

Blain Reinkensmeyer has 25 years of trading experience with over 2,500 trades placed during that time. He heads research for all U.S.-based brokerages on StockBrokers.com and is respected by executives as the leading expert covering the online broker industry. Blain’s insights have been featured in the New York Times, Wall Street Journal, Forbes, and the Chicago Tribune, among other media outlets.

Steven Hatzakis is the Global Director of Research for ForexBrokers.com. Steven previously served as an Editor for Finance Magnates, where he authored over 1,000 published articles about the online finance industry. Steven is an active fintech and crypto industry researcher and advises blockchain companies at the board level. Over the past 20 years, Steven has held numerous positions within the international forex markets, from writing to consulting to serving as a registered commodity futures representative.

Jeff Anberg is a Senior Editor at StockBrokers.com. Along with years of experience in media distribution at a global newsroom, Jeff has a versatile knowledge base encompassing the technology and financial markets. He is a long-time active investor and engages in research on emerging markets like cryptocurrency. Jeff holds a Bachelor’s Degree in English Literature with a minor in Philosophy from San Francisco State University.