Best UK Brokers For Earning High Cash Interest 2026
Cash sitting uninvested in your trading account can be a productive asset in your portfolio, particularly in fluctuating interest rate environments. To capitalise on this, many investors are considering interest incentive programs offered by a growing number of brokers in the UK. These programs automatically add interest to your unused cash balance, ensuring your British Pounds are productive until you decide to invest them.
UK Brokers Paying Interest On Cash Balances
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Established in 1974, IG is a unit of IG Group Holdings Plc, listed on the LSE as IGG. It provides access to over 17,000 markets through intuitive platforms and apps. For half a century, IG has remained an industry leader, excelling in all vital aspects for traders.
Interest Rate: GBP: 3.75%
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Established in Poland in 2002, XTB caters to over a million clients worldwide. This forex and CFD broker offers a robust regulatory framework, a diverse range of assets, and prioritises trader satisfaction. It provides an intuitive proprietary platform equipped with excellent tools to support aspiring traders.
Interest Rate: USD: 3.45%, GBP: 4%, EUR: 2.30%
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Interactive Brokers (IBKR) stands as a leading brokerage, offering access to 170+ markets in 40 nations alongside extensive investment services. With 40+ years in finance, this Nasdaq-listed entity complies with regulations from the SEC, FCA, CIRO, and SFC, ensuring global trustworthiness in trading.
Interest Rate: USD: 3.14%, GBP: 3.24%
IG
XTB
Interactive BrokersSafety Comparison
Compare how safe the Best UK Brokers For Earning High Cash Interest 2026 are and what features they offer to protect traders.
| Broker | Trust Rating | FCA Regulated | Negative Balance Protection | Guaranteed Stop Loss | Segregated Accounts |
|---|---|---|---|---|---|
| IG | ✔ | ✔ | ✔ | ✔ | |
| XTB | ✔ | ✔ | ✔ | ✔ | |
| Interactive Brokers | ✔ | ✔ | ✘ | ✔ |
Payments Comparison
Compare which popular payment methods the Best UK Brokers For Earning High Cash Interest 2026 support and whether they have trading accounts denominated in British Pounds (GBP).
| Broker | GBP Account | Debit Card | Credit Card | Neteller | Skrill | Apple Pay |
|---|---|---|---|---|---|---|
| IG | ✔ | ✔ | ✔ | ✘ | ✘ | ✘ |
| XTB | ✔ | ✔ | ✔ | ✔ | ✔ | ✘ |
| Interactive Brokers | ✔ | ✘ | ✘ | ✘ | ✘ | ✘ |
Mobile Trading Comparison
How good are the Best UK Brokers For Earning High Cash Interest 2026 at mobile trading using apps or other mobile interfaces.
| Broker | Mobile Apps | iOS Rating | Android Rating | Smart Watch App |
|---|---|---|---|---|
| IG | iOS & Android | ✔ | ||
| XTB | iOS & Android | ✔ | ||
| Interactive Brokers | iOS & Android | ✔ |
Beginners Comparison
Are the Best UK Brokers For Earning High Cash Interest 2026 good for beginner traders, that might want an affordable setup to get started, along with good support and educational resources?
| Broker | Demo Account | Minimum Deposit | Minimum Trade | Support Rating | Education Rating |
|---|---|---|---|---|---|
| IG | ✔ | $0 | 0.01 Lots | ||
| XTB | ✔ | $0 | 0.01 Lots | ||
| Interactive Brokers | ✔ | $0 | $100 |
Advanced Trading Comparison
Do the Best UK Brokers For Earning High Cash Interest 2026 offer features that allow for more advanced trading strategies?
| Broker | Automated Trading | Pro Account | Leverage | VPS | AI | Low Latency | Extended Hours |
|---|---|---|---|---|---|---|---|
| IG | Expert Advisors (EAs) on MetaTrader, build your own on ProRealTime | ✔ | 1:30 (Retail), 1:222 (Pro) | ✔ | ✔ | ✔ | ✔ |
| XTB | - | ✔ | 1:30 | ✘ | ✘ | ✔ | ✘ |
| Interactive Brokers | Capitalise.ai, TWS API | ✘ | 1:30 | ✘ | ✔ | ✔ | ✔ |
Detailed Rating Comparison
Use this heatmap to compare our detailed ratings for all of the Best UK Brokers For Earning High Cash Interest 2026.
| Broker | Trust | Platforms | Mobile | Assets | Fees | Accounts | Support | Research | Education |
|---|---|---|---|---|---|---|---|---|---|
| IG | |||||||||
| XTB | |||||||||
| Interactive Brokers |
Our Take On IG
"IG offers a complete package: an easy-to-use web platform, top-tier beginner education, enhanced charting via TradingView, up-to-date data, and strong trade execution for seasoned traders."
Tobias Robinson
Reviewer
Pros
- The web-based platform supports traders at every level, offering advanced charting tools and real-time market data vital for trading. Additionally, IG now includes TradingView integration.
- IG secured a crypto asset license from the FCA, enabling its return to the UK market. It now offers buying, selling, and storage services for over 55 digital tokens with fees starting at 1.49%, all under FCA regulation.
- IG excels with its diverse instruments, offering stocks, forex, indices, commodities, and cryptocurrencies. Additionally, it provides US-listed futures, options, and an AI Index, ensuring varied diversification opportunities.
Cons
- Based on tests, stock and CFD spreads remain less competitive than the lowest-cost brokers, such as CMC Markets.
- IG has ended its swap-free account, diminishing its attractiveness to Islamic traders.
- IG imposes a monthly inactivity fee of $12 after two years, discouraging occasional traders.
Our Take On XTB
"XTB excels for novice traders with its superb xStation platform, minimal trading costs, no required deposit, and outstanding educational resources, many of which are fully integrated into the platform."
William Berg
Reviewer
Pros
- The xStation platform stands out with its user-friendly design and intuitive tools, such as adaptable news feeds, sentiment heatmaps, and a trader calculator. These features streamline the learning process for new traders.
- XTB offers a superb array of educational resources, such as training videos and articles, embedded within the platform to assist traders of all experience levels.
- XTB processes withdrawals swiftly, paying within 3 business days, subject to the method and amount.
Cons
- The demo account lasts only four weeks, posing a challenge for traders wanting to fully explore the xStation platform and refine short-term strategies before investing actual money.
- XTB has stopped supporting MT4, restricting traders to its own platform, xStation. This decision may discourage experienced traders accustomed to using the MetaTrader suite.
- The research tools at XTB are commendable but have the potential to excel further. Enhancing them with access to top-tier third-party services like Autochartist, Trading Central, and TipRanks would significantly elevate their offering.
Our Take On Interactive Brokers
"Interactive Brokers ranks highly for seasoned traders due to its robust charting platforms, live data, and bespoke layouts via the new IBKR Desktop app. Its competitive pricing and sophisticated order choices appeal to traders, and its wide equity options are industry-leading."Tobias Robinson
Reviewer
Pros
- While initially targeting seasoned traders, IBKR has recently widened its appeal by eliminating its $10,000 minimum deposit requirement.
- IBKR consistently offers unparalleled access to global equities, with thousands of shares available across over 100 market centres in 24 countries, including the recently added Saudi Stock Exchange.
- A wide range of third-party research subscriptions, both free and paid, are available for traders. Additionally, by subscribing to Toggle AI, traders can receive commission rebates from IBKR.
Cons
- You are limited to a single active session per account, meaning you cannot use both your desktop programme and mobile app at the same time. This restriction can occasionally lead to a frustrating experience for traders.
- TWS has a steep learning curve, making it difficult for newcomers to navigate and grasp its features.
- IBKR offers a variety of research tools, but their inconsistent placement across trading platforms and the 'Account Management' webpage creates a confusing experience for users.
Note: interest rates are subject to change. Check the current rate available before depositing funds.
What To Consider With An Interest-Earning Investment Account
When evaluating what to do with uninvested cash, consider these factors to ensure your money works effectively for you:
- Weigh the interest rates available for the amount you plan to leave in your investment account. For instance, Swissquote is paying interest up to on balances up to 50,000, however the interest rate drops if you want to deposit more than that. Alternatively, XTB serves British traders of all budgets, paying 4% on all balances.
- Consider whether traditional savings accounts offer higher interest rates. At the time of writing, I evaluated the options available and Wealthify stood out by offering 4.91% in their Instant Savings account, while Virgin Money was offering 5.01% in their Defined Access account. The downside is convenience – you’ll need to move funds to an investment account to capitalise on trading opportunities.
- The safety of your cash is another critical aspect. Verify whether your uninvested cash will be protected by insurance schemes like the Financial Services Compensation Scheme (FSCS) in the UK – which insures deposits up to £85,000 per eligible person and up to £170,000 for joint accounts. XTB and eToro, for example, are all regulated by the FCA and provide deposit protection through the FSCS.
Interest rates are determined by the rates brokers receive from the banks where they hold your cash. If there are changes in the Bank of England’s base rate you can anticipate corresponding adjustments in the interest rates on your cash.
Pros & Cons Of Interest-Adding Brokerage Accounts
Pros
- Interest automatically added to unused cash helps mitigate the opportunity cost of holding onto idle funds, allowing you to earn a return on funds that would otherwise earn no interest.
- Some brokerage accounts give you the flexibility to earn interest on the funds held within it, and to utilise the account as a financial tool to pay bills directly from your account.
- Account funds remain liquid and accessible for trading or withdrawal, providing flexibility to capitalise on market opportunities or meet unexpected financial needs.
- Interest earned can be automatically reinvested, compounding returns over time without requiring manual intervention.
Cons
- Although earning interest on your uninvested cash is a pleasant bonus, it may not amount to a substantial sum. If you want to earn risk-free interest, you may be better off considering a high-yield savings account.
- While a broker may offer an attractive interest rate on uninvested funds, they may have a minimum balance requirement and will only pay interest on all your uninvested cash if your total balance exceeds a specific threshold.
- Some brokers have account fees and restrictions, which may limit how often you can transfer money in and out.
Comparing different brokerage offers and their terms can help you choose the best place for your uninvested cash, balancing earning interest and having funds readily available for investment opportunities.
Bottom Line
If you want to attain the returns of a high-yield savings account while maintaining nearly the same level of security as a bank, there are possibilities to achieve this within your brokerage account.
Utilising your trading account for banking purposes can also aid in consolidating your financial affairs under one provider, potentially offering additional advantages in terms of simplicity and convenience.
But while many investors view cash interest programs as temporary holding spots, it’s common for uninvested cash to remain there for an extended period. As such, ensure that your cash is positioned optimally for your circumstances, for example, maximising the interest rate.
To find the right platform for you, see our ranking of the best UK brokers paying cash interest.
FAQ
Which UK Investment Platform Pays The Highest Cash Interest?
eToro is among the highest interest-paying investment platforms in the UK, offering up to 5.3% on cash balances.
We’ve compiled a list of the best brokers paying interest on idle funds in the UK, considering their overall trading environment, alongside factors like interest earned on cash.
Do You Have To Pay Tax On Interest Earned From Brokerage Accounts?
In the UK, you may owe tax on interest earned through a brokerage account. HMRC sets the rules on how much tax you will pay, which varies depending on your personal allowance, personal savings allowance, and the starting rate on savings.