Be wary of fraudulent activity: We’ve identified various attempts to impersonate Flagstone and our staff. All client funds are safe and secure. We’ll never call you to recommend specific savings accounts. 

Our best high-interest savings accounts

Manage multiple savings accounts and enjoy exclusive, high-interest rates.

We update this table daily, so rates and banks may change. We’ve already deducted our share of the interest from these rates. 

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Important information on savings accounts with high rates

Rates change

These rates are correct as of 25/03/2026. We update our rates daily.

Different banks, accounts, and rates will be available to you in the platform depending on whether you’re looking to open an individual or joint account, or acting on behalf of a business, charity, trust, SIPP, or SSAS.

Paying your interest

For Fixed Rate, (also called ‘Fixed Term’), Instant Access, and Notice accounts, interest is calculated daily. But the frequency of when interest is paid will vary by savings account.

You’ll find more information in the Terms & Conditions of each savings account when you log in to the platform.

How Rachel used Flagstone to protect and grow her cash

Rachel shares her experience of managing her money after
selling her business. 

Discover the convenient Cash ISA

Spread savings across multiple banks in one ISA. Free transfers, flexible withdrawals, and swift sign-up.

Learn more

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Why open high-interest savings accounts with Flagstone? 

Convenient

One sign-up, one platform, one password.

Rewarding

We're committed to offering interest rates that beat the high street. 

Secure

Protect more of your savings with FSCS protection up to £120,000 per banking group.

Versatile

Manage multiple account types to balance high interest with access to your cash. 

How Flagstone

makes money

For each account you open with our bank partners through Flagstone, we receive a small share of the interest. We deduct that share before we feature any account in our platform.

The rate you see will always be the rate you receive.

We don’t charge admin, management, or platform fees.

 

This is how our share of the interest works →

High-interest savings accounts to suit your style 

With more choice than any other savings platform, you can build a portfolio that meets your needs and matches your method. 

High-interest savings accounts FAQs 

Is £100,000 a lot of savings in the UK?

Yes. You can earn a healthy amount of interest with £100,000 in savings, provided you put your cash in high-interest savings accounts. But the exact amount you can earn depends on the accounts you choose to open.

In general, Fixed Rate accounts pay you a higher interest rate in exchange for limiting access to your cash. Putting some of your money in Instant Access accounts allows you to withdraw savings when you need it, though you’ll likely earn less on those deposits as a result.

All of the accounts in Flagstone’s platform are FSCS protected. This means if you save £100,000 in our platform, you’ll be reimbursed if the banks you save with go out of business.

You can join Flagstone with a minimum deposit of £10,000.

How many savings accounts can you have?

There’s no limit to the number of savings accounts you can open. But opening them separately can create administrative headaches – from completing multiple applications to managing different logins.

Flagstone’s savings platform makes it easy to open and manage multiple accounts in one place. With one secure login, you can check the terms and conditions of each account, switch to accounts offering higher interest, and reserve Fixed Rate accounts in advance for when your funds mature.

Where should I put £20,000 in savings in the UK?

If you want to balance strong earnings with access to your cash, you could consider opening an account with high-interest savings platforms like Flagstone.

This is because you can deposit into multiple account types in our savings platform. For example, you could maximise your returns with Fixed Rate accounts, while keeping some money in Instant Access accounts for withdrawals when you need them.

Is my money safe in a savings account?

Provided your bank is a member of the FSCS (Financial Services Compensation Scheme), your eligible savings will be protected up to £120,000 per person, per banking group. For joint accounts, protection rises to £240,000.

This means not only can you deposit to earn interest, but if your bank goes out of business your money will be reimbursed.

Who can open an account with Flagstone?

You can open a savings account if you’re over 18 years old and have a minimum deposit of £10,000. Once you’ve requested an account with us, we may need to run additional checks to verify important details, such as your proof of funds. This is to ensure that we comply with AML (Anti-Money Laundering) and KYC (Know Your Customer) legislation.

Can I open a Joint account with Flagstone?

Yes, you're welcome to open a Flagstone account with another person, and save together with double the FSCS protection. 

Where can I put my money to earn the most interest?

Where you put your money is a personal decision and will depend on your individual circumstances. In general, savers who place some of their funds in Fixed Rate accounts can earn higher interest, but this usually means limited access to their cash for the agreed term.

As a result, savers often place some of their money in Instant Access accounts, in case they need to withdraw their money at short notice.

What is a holding account and why do I need one?

Our savings platform uses a holding account so you can open multiple accounts, without needing to complete a new application each time. It's a temporary home for your cash while you choose which savings accounts to open.

The holding account is provided by HSBC, so all eligible deposits are protected up to £120,000 per client, per banking group. Or £240,000 for joint accounts.

Cash in the holding account doesn’t earn you any interest. Once you've funded, it's important to open savings accounts as soon as possible.

Explore how holding accounts work and why we use them.

We’re at your service

Still need answers? Whether you’ve opened your Flagstone account or you’re just getting started, we’re here to help.

Call us on +44 (0)203 745 8130, Monday-Friday 9am-5.30pm.

 

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