Smart money app Plum has announced its Cash ISA is now flexible. Both existing and new customers will be able to withdraw funds and replace them within the same tax year without affecting their annual £20,000 Cash ISA allowance, soon to be £12,000 from 6 April 2027.The app currently offers 4.57%* AER (variable) interest with its Cash ISA, which is the market-leading variable rate directly available from a provider and a competitive transfer-in rate of 4.07%, both well above the Bank of England base rate. Rashmi V D’Souza, VP of Product at smart money app Plum, commented: “Over the last year, we’ve not only focused on providing new products that will help our customers in their wealth-building journey, but also on making changes to existing products in our effort to continuously improve our offering. “This exciting new adjustment, which follows the removal of withdrawal restrictions, reflects our commitment to make our proposition as attractive as possible.“Now Cash ISA customers won’t have to worry about 'losing' their tax-free allowance if they need to take money out. They’ll be able to withdraw and top back up freely as long as it’s within the same tax year. “We think this is a hugely positive change for customers, especially in light of the impending new £12,000 yearly limit imposed by the government on Cash ISAs being introduced in 2027.”NoYesPersonal Finance31 Mar, 2026