Cash Savings account
Get better rates for your cash
A Cash Savings account helps you find better interest rates, then seamlessly move to another deal at the end of your offer period.
See the latest rates
You can easily transfer between providers through your single account to always ensure you're investing on your terms. The Cash Savings account offers a wide choice of market-leading interest, making your investment goals easier to reach.
The standalone Cash Savings service is provided by Flagstone and is not linked to your ii ISA, Personal Pension (SIPP) or Trading Account.
| Duration | Institution | Rate | Minimum | Maximum |
| 3 years | AlRayan Bank | 4.05% | £10,000 | £85,000 |
| 2 years | AlRayan Bank | 4.05% | £10,000 | £85,000 |
| 18 months | AlRayan Bank | 4.05% | £10,000 | £85,000 |
| 12 months | National Bank of Kuwait (International) PLC | 4.42% | £10,000 | £250,000 |
| 9 months | AlRayan Bank | 4.05% | £10,000 | £85,000 |
| 6 months | ABC International Bank plc | 4.32% | £10,000 | £250,000 |
Updated: 7 July 2025. For Sharia compliant accounts, the interest rate is represented by a profit rate.
Hold your cash savings in one place and pick the best deal from over 25 UK banks and building societies. It really is that straightforward.
How it works, in 3 easy steps
Hold your cash savings in one place and pick the best deal from over 25 UK banks and building societies. It really is that straightforward.
Open your account
Access hundreds of savings accounts with a single application.
Deposit a minimum of £10,000, and a maximum of £250,000.
Fund and choose your savings accounts
When you fund your Cash Savings account, it acts like a wallet. Use it to open as many fixed-term and notice accounts as you need - all at your fingertips.
Protect, grow and manage your portfolio
Effortlessly move, manage and withdraw your cash as you need. Maximise interest income with exclusive rates, and optimise your FSCS protection by spreading your cash across multiple banking groups (where eligible).
Flagstone Cash Savings account benefits include...
Maximise your interest
Grow your cash with exclusive rates. Whether you’re saving for tax bills or Tuscan thrills, Flagstone helps keep your plans on track.
Protect what’s yours
Split your cash between banks, for maximum FSCS protection on your eligible deposits (£85,000 per banking group for individuals, £170,000 for joint accounts).
Escape the paperwork
Access hundreds of rates with a single application, and manage your savings with one password. It's less to keep track of, meaning less admin work for you.
Enjoy a world of choice
With hundreds of savings accounts from 25+ banks, Flagstone offers more options than any other platform. Fixed-rate, notice, Sharia – all in one place.
Stay in control
Access your account on a platform that's open and available 24/7. So you can manage your portfolio any time, from anywhere, at a moment’s notice.
Further information
The Cash Savings account is provided by Flagstone and is ideal for savers who want the peace of mind of a fixed interest rate.
- To apply you must be 18 or over
- A resident of the United Kingdom
- You can apply for an individual or a joint account
The Annual Equivalent Rate (AER) is the rate you would receive if the interest was paid and compounded annually. It's a universal tool that enables you to compare different savings products. The rate is calculated after the share of interest (management fee) is deducted.
Gross interest is the annual rate of interest to be paid on a deposit account before taxes or other charges are deducted. You are responsible for paying any tax due to HMRC. Your tax liability depends on your personal circumstances and may be subject to change.
Deposit accounts available through Cash Savings include accounts operated under Shariah principles. This means that interest cannot be earned, only profit. The profit shared is the expected profit rate at the time the account is opened. Further information can be found on the platform.
A cash savings account, powered by Flagstone
The Cash Savings account is powered by Flagstone, a UK-registered and Financial Conduct Authority (FCA) regulated financial technology business. Flagstone’s cash deposit platform technology unlocks the UK’s best deposit rates for savers in a single, secure online environment. Please note that Flagstone shares income from the interest on funds deposited through the Flagstone platform with interactive investor.
Your money is protected
All banks on our panel are authorised by the PRA and Financial Conduct Authority (FCA) and pay levies into the Financial Services Compensation Scheme (FSCS). In the unlikely event that anything happens to one of your chosen banks, the FSCS automatically refunds eligible deposits of up to £85,000 per customer per banking institution.
If you hold more than £85,000 with any one banking institution (even if it's spread across several products, accounts or different arms of the same banking institution), you're unlikely to be able to recover the difference.
Join today and start making your cash do more
Get started
Open a Cash Savings account today with Flagstone's quick and simple application.
Already have a Cash Saving account?
Continue your application or log in to your Cash Savings account now.