Interactive Brokers ISA Review: fees, transfers, and how it compares

With so many options for UK residents to save and invest tax-efficiently, it can be hard to find the right platform to use. So, we’ve created this Interactive Brokers (IBKR) Stocks and Shares ISA review to give you an insight into what this particular broker can offer you.

The IBKR ISA offers an affordable way to invest in a vast range of investments. Looking at the competition, IB’s ISA offering stands out because of:

• Low trading costs, particularly for international stock commissions, and very low FX conversion costs.
• The ability to use a family advisor account to manage and trade ISAs for the whole family from a single structure.
• Interest paid on idle cash balances.

Want to know more about the IBKR ISA? To ensure you completely understand this account, throughout this Interactive Brokers ISA review we’ll explain everything you need to know. This will include all the fees involved, how it compares against competitors and the steps you need to take to transfer your ISA. All fees were checked on the providers’ websites in September 2026.

What is a stocks and shares ISA?

A stocks and shares ISA, also known as an investment ISA, is a tax-efficient investment account available to UK residents aged 18 or over.

The tax-free ISA annual allowance for 2026/27 is £20,000. Note that from 6 April 2027, under-65s will only be able to put £12,000 of the £20,000 allowance into a Cash ISA, with the remaining £8,000 reserved for stocks and shares or Innovative Finance ISAs. The overall £20,000 limit and the stocks and shares ISA limit are unchanged.

You can split your allowance across several ISAs or use the whole amount for your stocks and shares ISA. Since 6 April 2024, you can also open and pay into more than one stocks and shares ISA in the same tax year (with different providers), as long as your total contributions stay within the £20,000 allowance. Keep in mind that the allowance can change from year to year.

The main benefit of using a stocks and shares ISA is that for the investments held within the tax wrapper, you don’t have to pay dividend tax or capital gains tax (CGT) on any income or growth. This allows your portfolio to grow and compound over the years without being held back by a tax burden.

Another significant benefit is that when you want to withdraw funds from your ISA, unlike with a pension, any money you take out doesn’t count towards your income for that year, meaning you pay no additional tax on your funds down the line.

Interactive Brokers (IBKR) ISA at a glance

Types of IBKR ISAs

There are two types of ISA accounts available with Interactive Brokers:

1. Stocks and shares ISA account: this is for adults aged 18 or over based in the UK, and you can invest up to £20,000 into this type of ISA during the tax year.
2. Junior ISA (JISA) account: allows you to invest on behalf of someone under 18. You can invest up to £9,000 each tax year, which doesn’t count towards your own annual allowance. The child can only access the account once they turn 18.

Interactive Brokers does not offer a Cash ISA, a Lifetime ISA or an Innovative Finance ISA.

How it works

The sign-up process is relatively straightforward. You will first need to sign up for an account with Interactive Brokers. During the registration process, if you are a UK resident and select a GBP (pounds sterling) based account, you’ll be given the option to open a stocks and shares ISA.

You’ll need your personal details (including your address and National Insurance number) when signing up. It doesn’t cost you anything to open an IBKR account, and there’s no annual platform fee or minimum deposit, only the £3 minimum monthly activity fee described below.

So, you’re able to open an ISA quite easily. Just keep in mind that your total ISA contributions across all providers cannot exceed £20,000 per tax year, and that cash in the IBKR ISA must be held in GBP.

Interactive Brokers ISA fees

The costs and fees for the IBKR ISA are very competitive and straightforward. Here’s a table with everything laid out so that you can review the costs and fees yourself:

Pros and cons of the IBKR ISA

Here’s a quick summary of the main advantages and disadvantages of the Interactive Brokers ISA:

Transfer a stocks and shares ISA to Interactive Brokers

It is possible to transfer your existing ISA over to IBKR. You’ll need to file an ISA transfer request with Interactive Brokers (via the Transfer & Pay section in the Client Portal).

Once you’ve done this, they will contact your existing stocks and shares ISA provider to initiate the transfer. Your existing provider has to let you transfer out if you choose to, but it can take up to 30 calendar days. Interactive Brokers does not charge for an ISA transfer in (your old provider may charge exit fees), but not all providers and assets are supported.

Suppose you hold securities or assets in your existing stocks and shares ISA that are not supported on the Interactive Brokers platform. In that case, you’ll need to first sell (liquidate) these and convert them into cash to be transferred over, and then you can buy similar (or different) investments.

Always make sure that you use the official Interactive Brokers ISA transfer service. Don’t withdraw everything from your current provider and move it yourself, because you could lose the tax protection you’ve built up over time.

How safe is the Interactive Brokers ISA?

The IBKR ISA is provided by Interactive Brokers (U.K.) Limited, authorised and regulated by the FCA (Financial Conduct Authority, reference number 208159). Your securities are held in custody by the US affiliate, Interactive Brokers LLC, so they are covered by the US SIPC scheme rather than the UK’s FSCS.

This means that if the company were to fail, up to $500,000 of securities would be protected (with a $250,000 cash limit), which is much higher than the £85,000 protection offered by the FSCS. Client money and assets are segregated from the broker’s own funds, as required by FCA rules.

How to pick the right stocks and shares ISA

Finding the right ISA for you depends on what you’re looking for and how regularly you invest. Here are some things to look out for and questions to ask yourself when you’re trying to find the best stocks and shares ISA:

1. Does the platform offer commission-free trading in the UK, and how cheap are the platform and share dealing fees?
2. Is there a discount for frequent investors?
3. What is the investment choice like?
4. How easy is it to use the platform, and is there a mobile app?
5. Do you have to pick all the investments, or are there ready-made portfolios?
6. Is there a cheap FX fee if you plan on buying international shares?
7. How reputable is the provider?
8. Does the platform offer good customer service?
9. Are there any incentives like free stocks or cashback for joining?

The truth is, there’s no single “best” ISA provider. It’s all about finding the one that fits your needs as an investor. Many platforms structure costs and fees differently, so some will work out cheaper for you depending on what you invest in and how frequently.

And since April 2024 you are no longer limited to one stocks and shares ISA per tax year, so if you try one out for a while and don’t like it, or find it expensive for your needs, you can open another one or transfer to another platform down the line.

Bottom line: is the IBKR ISA a good choice?

The Interactive Brokers stocks and shares ISA competes in a crowded market, and with so many options already available it needs to be top-tier to compete, which it does successfully for investors who buy international shares.

To sum it up, IB’s ISA offering stands out because of:

• Low trading costs, particularly for international stock commissions, and very low FX conversion costs.
• The ability to use a family advisor account to manage and trade ISAs for the whole family from a single structure.
• Interest paid on idle cash balances.

It’s not the absolute cheapest ISA platform available to UK investors (Trading 212 and InvestEngine charge no platform or dealing fees), but the fees from Interactive Brokers are extremely competitive across the board, and for anyone buying US or European shares its 0.03% FX fee is in a league of its own. It also boasts a well-established brand name and an investment choice other providers can’t match.

This is a DIY investment ISA. So you’ll need to manage your portfolio yourself, and the IBKR platform isn’t the sleekest, but you can invest on the web or through its mobile app. Interactive Brokers offers the option to carry out an ISA transfer for you, so if you’re looking to change providers or find a cheaper platform, this will make moving much easier.

Hopefully, this review of the Interactive Brokers ISA has given you some insight into what it can offer you as an investor. Let us know how you get on in the comments and what you think of this account from IBKR.

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