Best Interest Rates on Uninvested Cash (July 2025)

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Even though UK interest rates have recently been reduced to 4.25%, you can still get some investing accounts will pay you interest on your cash of up to 5% to encourage you to keep it with them, rather than transfer it out to higher-paying interest bank accounts.

We have ranked and compared UK trading platforms and investing accounts that offer the highest interest on uninvested cash balances.

Which brokers and investment platforms pay the most interest on uninvested cash?

Freetrade currently offers the most interest on uninvested cash at 5%, but you need to have a Plus subscription to get it.

Other platforms, including, IG, Interactive Brokers, Interactive Investor and Hargreaves Lansdown, also pay competitive interest rates, but these are tiered according to account balances.

Interest rates have been declining across the board, but you can still get some pretty decent returns with these investment accounts.

Freetrade interest on cash
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