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Investing, tailored to your goals.

All Mexem accounts offer direct market access, advanced tools, and competitive pricing. Whether you’re investing tax-free via a Stocks & Shares ISA, trading actively, or managing client portfolios.

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Choose the account thats right for you

Sophisticated features, smart tools, and seamless infrastructure, trusted by professionals, built for everyone.
0.04% of trade value (minimum £0.8)
0.004$ per shares (minimum $0.8)
0.002% (2 USD or equivalent minimum)
General Investment Account
Designed for investors who want flexibility, global access, fast execution and institutional-style control. No account, platform, or custody fees.
More info
£2 per UK trade
£0 per US trade
0.25% FX
Stocks & shares ISA
A tax-efficient way to invest globally. £2 per UK trade, £0 per US trade. No account, platform, or custody fees.
More info
£2 per UK trade
£0 per USD trade
0.25% FX
Junior Stock & Shares ISA
Start investing for your child’s future with a Junior Stocks & Shares ISA - tax-free account managed by you. Annual limit £9,000 (2025/26).
More info

Choose the account thats right for you

Discover a full suite of institutional and professional account types, designed to meet the needs of sophisticated investors and organisations.

Advisor Account

Manage client portfolios with powerful tools, flexible billing, and comprehensive oversight.

Hedge Fund Account

Built for complex strategies, offering advanced risk management, reporting, and multi-strategy support.

Small Business Account

A smart solution for companies looking to invest excess capital or manage employee incentive plans.

Proprietary Trading Account

Ideal for prop firms and trading groups looking for speed, execution control, and scalability.

Money Manager Account

Designed for independent managers seeking professional-grade infrastructure and reporting.

Family Office Account

Seamlessly manage multi-generational wealth with consolidated access, oversight, and tailored solutions.

Powerful accounts for every kind of investor

Access direct markets, advanced tools, and low fees, built for everything from tax-free investing to pro-level trading.
General Investment Account
Eligibility
UK residents aged 18+ / Qualified investors may apply to upgrade to Professional Client status under FCA Elective or Per Se Professional criteria if they meet the relevant experience, knowledge, and portfolio size thresholds.
Tax benefit
No ISA wrapper; Standard UK Capital Gains Tax and dividend tax rules apply
Invest in
Full product access includes: Shares, ETFs, ETN, Bonds, Funds, with optional Margin trading
Contribution limit
Unlimited
Fractional shares
Supported for eligible securities
Fees
Low commission structure. No inactivity Fee, No maintenance Fee, No custody Fees. Please see full pricing page.
Stocks & shares ISA
Eligibility
U.K. residents for tax purposes and aged 18 or over
Tax benefit
Tax-free capital gains & dividends.Tax treatment depends on individual circumstances and may change. UK Tax rules apply.
Invest in
Shares, Stocks, Recognised UCITS, Mutual Funds, Bonds, ETFs, ETC.
Contribution limit
£20,000 per tax year
Fractional shares
Will be supported in the near future.
Fees
No platform, custody, or inactivity fees; £2 UK stock commission; £0 commission on eligible international stocks, 0.25% FX fee. Third party fees may apply.
Junior Stock & Shares ISA
Eligibility
UK-resident under-18; parent or guardian opens and funds the account
Tax benefit
No UK tax on gains or dividends; separate from parent Stock & Shares ISA allowance
Invest in
Stocks, ETFs, mutual funds—same as adult Stock & Share ISA.
Contribution limit
£9,000 per tax year (2025/26)
Fractional shares
Currently not supported
Fees
No platform, custody, or inactivity fees; £2 UK stock commission; £0 commission on eligible international stocks, 0.25% FX fee. Third party fees may apply.

Frequently asked questions

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Is my ISA account with Mexem a flexible ISA?

No, the only ISA account type that MEXEM offers is a non flexible Stocks and Shares ISA account. That means you can take money out, but it will count towards your annual ISA allowance if you pay it back in the same tax year.

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Do I need National Insurance Number to open an ISA?

Yes, you will need a National Insurance Number (NINO) to open an ISA account.


Please Note:


If not already listed then you need to enter the National Insurance Number in the Tax ID section of your profile to open a linked ISA account.  
Otherwise the system will return an error if you do not.
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See the following steps from your Client Portal:
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Click the Person icon on the top right of the screen

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> Settings

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> Account Settings followed by Account Profile

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> Profile Followed by the Pencil Icon to Edit your Profile information

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> In the Tax Residency section you may edit the information or remove Tax Residency and add another Tax Residency

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How much can i contribute each year to JISA?

For the 2025/26 tax year, the Junior ISA annual allowance is £9,000.

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This limit applies across all Junior ISAs your child may hold, including both cash and stocks & shares accounts.

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Who manages the JISA Account?

Parent or legal guardian:


Opens the account and acts as the registered contact.
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Ownership:

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All contributions belong to the child.
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Access:

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Funds remain locked until the child turns 18, at which point the Junior ISA automatically converts into an adult Stocks & Shares ISA.

What is JISA?

A Junior ISA (JISA) is a tax-free savings and investment account designed to help you build a secure financial future for your child. Any money you invest grows free from Income Tax and Capital Gains Tax, making it one of the most efficient ways to save for their future.
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There are two types of Junior ISAs available in the UK:
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Junior Cash ISA – earns tax-free interest.

Junior Stocks & Shares ISA – lets you invest in a wide range of qualifying investments such as shares, ETFs, funds, and bonds.
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At MEXEM, we will soon offer a Junior Stocks & Shares ISA that gives you access to 150+ global markets, 33 countries, and 23 currencies, all through our powerful trading platforms.

OUR POWER

Global Access.
Low Cost Fees.

Invest smarter with institutional-grade tools and transparent pricing.
Start today and make your money work globally.
Open account

Trade on global exchanges

33

Countries

150

Market venues

23

Currencies

Secure & Regulated Trading

Mexem Financial Services UK Ltd is authorised and regulated by the Financial Conduct Authority (FCA), Firm Reference Number 1009371. We act as a non-disclosed introducing broker to Interactive Brokers (UK) Ltd (IBUK), a globally regulated custodian and execution venue. We provide secure access to global markets under UK regulatory protections.
Regulation & insurance
Safeguarding assets
FCA regulated
MEXEM UK (FRN 1009371) is authorised and regulated by the Financial Conduct Authority (FCA), ensuring adherence to strict capital, conduct, and client asset protection rules.
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FSCS protected
Client assets are held with Interactive Brokers UK and are eligible for FSCS protection up to £85,000 in the event of IBUK’s default.
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Powered by Interactive Brokers
Our robust infrastructure leverages the global strength and advanced security protocols of our partner, Interactive Brokers (IBKR), a world-leading broker.
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Segregated client accounts
Your funds are held in segregated accounts, entirely separate from MEXEM's operational capital, ensuring your money is protected and easily identifiable.
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Past performance is not a reliable indicator of future results.  The value of investments, and the income derived from them, can fall as well as rise.  You may get back less than you have invested.
MEXEM Financial Services UK Limited is authorised and regulated in the UK by the Financial Conduct Authority.  Our details can be checked on the Financial Services Register.  Our Firm reference number is 1009371.
MEXEM Financial Services UK Limited is registered in England, number 15248800.  Registered office: Enterprise House First Floor, 2 The Crest, London, United Kingdom, NW4 2HN.