Best investment platforms paying high interest on cash

Some trading apps and platforms now offer high interest rates on uninvested cash, we look at the best options.

Promoted
XTB logo
Earn 4.75% interest on uninvested funds
No balance limits
Paid monthly
FSCS protected
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Capital at risk

You could get a high rate of interest paid on uninvested cash that’s sitting in your share trading account – or 0%, depending on which platform you’re with.

Despite base rate hikes from the Bank of England (BoE), many savers aren’t aware that you can get some great interest rates with investing platforms, so check out our list of the best options below.

Investing platforms with the best interest rates

We’ve shown the most competitive rates we found among investment platforms and trading apps in November 2024, in the table below.

Name Product UKFST Variable rate ISA option FSCS protection Offer Link
Trading212
5.17%
Get free fractional shares worth up to £100 when you sign up with Finder's link. T&Cs apply. Capital at risk.
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Capital at risk

XTB
4.75%
Earn up to 4.75% interest on uninvested cash.
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Capital at risk

Robinhood
4.25%
Read review

Capital at risk

OFFER
Bestinvest
4.2%
Get up to £1,000 cashback when you transfer your account over to Bestinvest. T&Cs apply.
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Capital at risk

Finder Award
Hargreaves Lansdown Fund and Share Account
Finder Award
2.25%-3.7%
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Capital at risk

Finder Award
CMC Invest share dealing account
Finder Award
2%
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Capital at risk

interactive investor Trading Account
1.75%-3.75%
Pay no account fee for 6 months when you open an ii Trading Account. Offer ends 31 December. Capital at risk. Terms & trading fees apply. New customers only.
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Capital at risk

Finder Award
FREE TRADES
eToro Free Stocks
Finder Award
1.5%-4.8%
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Capital at risk. Fees apply.

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Should you keep cash on an investing platform?

It can be useful, but it’s also important to be aware of the risks. Not every provider comes with protection from the Financial Services Compensation Scheme (FSCS), which protects deposits of up to £85,000 in the unlikely event that a provider goes bust. So, take a quick look at what level of protection you get from a platform before depositing funds.

Although some interest rates on offer may not beat top easy-access rates from banks, this can still be a convenient option, especially if you’re keeping that cash aside to invest in the future. This way, it’s in your account and ready to be invested whenever you want, and earning a return rather than gathering dust.

Picking an investment platform for the cash interest rate shouldn’t be your only deciding factor, but it’s definitely a helpful bonus.

George Sweeney, DipFA's headshot
Our expert says: Is it better to save or invest right now?

"It depends on your short and long-term goals. With interest rates still at a high level, you can earn a decent return from top savings accounts. However, these rates are likely to start dropping as soon as the base rate dips. If you have money that you want to access sometime soon, then a savings account could be a good option. But, if you’re prepared to put you money aside for a longer timeframe for a potentially higher reward, then you might want to consider investing.

The benefit of these investment accounts paying interest is that you can get the best of both worlds, keeping some funds as cash earning interest and then investing the remainder, all under one roof. Saving cash is still looking attractive in the near-term but if you want to beat inflation and grow your wealth, investing has often proven to be the best option in the long run."

Deputy editor

Combining investments and cash savings

It’s slightly under the radar, but there are several UK share dealing accounts offering some competitive rates on uninvested cash – money that’s sitting idle in your investment account.

So, instead of having your investments and cash savings held separately, you could consider keeping them under one roof. But be aware that some of these accounts won’t offer you the same protection as you’d get with a savings account.

Another potential hack is that some apps and platforms will pay this interest on cash held in your stocks and shares ISA. So you could use one ISA account as a hybrid for cash and investments.

Bottom line

Earning interest on uninvested cash held in your investment account is a nice bonus. However, if you’re really keen on simply saving your cash, you can probably find better rates with proper savings accounts. Really, you should be using your investment account for investing (sorry to point out the obvious).

Nevertheless, as an investor, it can be worth keeping some dry powder (cash) to one side, ready to invest if you spot a good opportunity and I don’t think anyone is going to complain about earning some interest on idle cash that’s sat on the sidelines. There is quite a variation in the rates offered by investment accounts, so make sure you shop around and check for any rules or restrictions if this is important to you.

Frequently asked questions

George Sweeney, DipFA's headshot
Deputy editor

George is a deputy editor at Finder. He has previously written for The Motley Fool UK, Nasdaq, Freetrade, Investing in the Web, MoneyMagpie, Online Mortgage Advisor, Wealth, and Compare Forex Brokers. He's focused on making personal finance and investing engaging for everyone. To do this he draws from previous work and his Level 4 Diploma for Financial Advisers (DipFA), sharing what he’s learnt. When he’s not geeking out about money, you’ll find him playing sports and staying active. See full bio

George's expertise
George has written 190 Finder guides across topics including:
  • Investing
  • Personal finance
  • Tax
  • Pensions
  • Mortgages

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