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Savings platform Flagstone launches cash Isa to rival Hargreaves Lansdown: is it a good deal? Updated: 02:00 EST, 7 March 2026 Products featured in this article are independently selected by This is Money's specialist journalists. If you open an account using links which have an asterisk, This is Money will earn an affiliate commission. We do not allow this to affect our editorial independence. The savings platform Flagstone has launched a cash Isa, giving savers more choice over how to make the most of their money. You can manage multiple savings accounts through a savings platform. With a host of options available through one provider, they aim to make it easier for you to compare accounts and switch when better rates become available. But it's uncommon for savings platforms to offer tax-free accounts, with most providing just regular savings accounts or fixed-rate bonds. Hargreaves Lansdown is the only other major provider to do so. With Flagstone saying it's setting a 'new standard' for flexible tax-free saving, how does its cash Isa work - and how do the two major options compare? Stand off: Flagstone's cash Isa goes up against a similar product from Hargreaves Lansdown How does Flagstone's cash Isa work? Savings platforms let you manage what's essentially a savings portfolio from one account, and spread your funds across several accounts. You can monitor your money in one place and move it within the platform itself when you want to switch. It's less common for savings platforms to offer cash Isas, with both Hargreaves Lansdown and Flagstone being the two major providers to do so. Cash Isas must stay separate from other accounts, so you'll probably end up with two accounts on the savings platform - one for normal savings accounts with no tax-free wrapper, the other for cash Isas. The benefits of the cash Isa element remain the same. You can compare options quickly then easily spread your money and switch between them. Flagstone only offers easy-access cash Isas currently, while Hargreaves Lansdown also has fixed-rate Isas - though fixes still need to end before you can move your money between accounts. How do the two providers compare? Flagstone's cash Isa is initially bare bones compared with Hargreaves Lansdown's. The big catch is on what matters most - the rate. Flagstone's best rate is 3.6 per cent variable, on an easy-access Isa through LHV. Hargreaves Lansdown is currently offering 4.3 per cent variable*, on its own easy-access Isa provided in partnership with Shawbrook Bank. Flagstone also only has six accounts available, which are all easy-access options. But it's still early days for the platform, which says it will have more easy-access options to choose from by 5 April with fixed-rate accounts coming later in the year. Hargreaves Lansdown has nearly 30 cash Isa accounts available, covering both easy-access and fixed-rate deals. On the other hand, Flagstone does compare well on flexibility. It's possible to transfer Isas directly to Flagstone, while Hargreaves Lansdown has a quirk that requires you to transfer to its stocks and shares Isa first before moving money to the cash counterpart. Flagstone's Isa is also flexible, meaning you can withdraw money in the same tax year and replace it without affecting your Isa allowance. At Hargreaves Lansdown, any withdrawals reduce your allowance. Hargreaves Lansdown does win on the low £1 minimum deposit - Flagstone is asking for a large £10,000 to get started. Read our Hargreaves Lansdown review to find out how it performs as an investment platform. Is a savings platform worth it? Whether you plump for a savings platform like Flagstone or Hargreaves Lansdown at all depends on whether you like the convenience of managing multiple cash accounts on one platform, or whether you're happy to keep on top of accounts directly with providers. You can get higher rates directly through Prosper (4.5 per cent)*, Trading 212 (4.54 per cent)* and Etoro (4.59 per cent)*, although keep in mind these include 12-month boosts so your rate will drop after the year. Save money, make money. 4.54% cash Isa. Trading 212: 0.94% fixed 12-month bonus £100 cashback. Transfer or fund at least £10,000 with Prosper 4.61% cash Isa. Includes 12-month boost for new customers £3,000 cashback. 1% cashback up to £3,000 when transferring Earn up to £3,000. £100-£3,000 cashback for joining Affiliate links: If you take out a product This is Money may earn a commission. These deals are chosen by our editorial team, as we think they are worth highlighting. This does not affect our editorial independence. Terms and conditions apply on all offers. Somerset Boy, United Kingdom, 20 minutes ago You are hardly going to get rich quick on a paltry return of 3.6%! Not worth the bother of filling in the application form. The opinions and views expressed in the comments section are solely those of the individual users and do not represent or reflect the opinions, views, or positions of Daily Mail. Daily Mail does not endorse, support, or verify the accuracy of any user-generated content. More top stories. Best buy savings tables. FREE SAVINGS ALERTS The best rates straight to your inbox How this is Money can help. Don't miss. This is Money podcast. Inside saving & banking. 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Flagstone launches multi-account Cash Isa wrapper. Flagstone has launched a new Cash Isa that allows savers to hold multiple tax-free accounts within a single wrapper, as platforms compete to simplify cash management amid strong demand for Isa products. The savings platform, which manages more than £19bn of deposits, said its Flagstone Cash Isa is designed to reduce the administration associated with holding several Isas across different providers while increasing flexibility over transfers and withdrawals. The product enables customers to transfer in existing Cash Isa balances, move money between accounts and make multiple withdrawals and deposits within the same tax year without affecting their annual allowance. Users can allocate funds across a range of partner banks through a single dashboard and start earning tax-free interest immediately after allocation. John Martin, chief product officer at Flagstone, said the launch aimed to remove longstanding frictions in the market. "The Flagstone Cash Isa is all about maximum flexibility and minimum small print, setting a new standard for hassle-free, truly flexible, tax-free saving at scale," he said. "We're eliminating the inconvenience, effort and paperwork associated with managing multiple Cash Isas." Five banks are initially available within the wrapper - OakNorth, Paragon, Arbuthnot Direct, RateSetter and Griffin - offering instant access accounts with rates up to 3.56% AER. Flagstone said additional providers and products will be added before the end of the current Isa season. Customers can manage both Isa and non-Isa savings through a single login, enabling them to compare options and adjust allocations quickly. Martin said the approach would appeal particularly to savers with larger balances who want to optimise returns without spreading funds across multiple platforms. "Many savers know that the tax advantages of Cash Isas are too good to miss, but the inconvenience of optimising so many accounts in so many different places stops them from ensuring their tax-free cash works as hard as it could," he said. All accounts accessed through the platform are eligible for Financial Services Compensation Scheme (FSCS) protection, with customers able to spread deposits across different banks to maximise coverage. Flagstone said individuals can place up to £600,000 in the Cash Isa wrapper, with broader platform limits allowing significantly larger sums across Isa and non-Isa accounts. The product is available to new and existing customers with a minimum £10,000 deposit. There is no limit on the number of Isa transfers into the wrapper. The launch comes amid heightened interest in Cash Isas. Savers deposited £5.1bn into the products in November 2025 as many sought to maximise allowances ahead of a planned reduction in the Cash Isa threshold to £12,000 in April 2027. Research commissioned by Flagstone found that 67% of Cash Isa holders prefer them to other savings options due to their tax-free status, low perceived risk and simplicity. Katie Horne, savings expert at Flagstone, said accessibility remained crucial. "Never has it been more important to make sure that Cash Isas are easily accessible to people taking an active interest in their future money management," she said. She added that the products remain "the nation's favourite place to guard and grow their hard-earned savings".