What Is Atom Bank?
Atom Bank plc is the UK's first bank to be built exclusively for mobile — there is no website account management and no branch network. It is authorised by the Prudential Regulation Authority (PRA) and regulated by the Financial Conduct Authority (FCA) under firm reference number 661960. Deposits at Atom Bank are protected by the Financial Services Compensation Scheme (FSCS) up to £85,000 per person. Atom is headquartered in Durham and launched its savings products in 2016. It offers fixed-rate savings bonds and business savings products, and also provides residential mortgages and business loans.
Atom Bank Savings Products
Atom's savings range is centred on fixed-rate savings accounts (fixed-term bonds) for personal and business savers. As of 2026, Atom's core products include:
- ▸Fixed Saver — fixed-rate bonds for personal savers, available in terms from three months to five years. Rates are fixed for the duration and do not change with the Bank of England base rate. Interest can be paid monthly or at maturity.
- ▸Instant Saver — an easy-access savings account with a variable rate, allowing withdrawals at any time without penalty.
- ▸Business Saver — fixed-rate and easy-access savings products for business customers, available to sole traders and limited companies.
All rates and product availability should be verified directly at atombank.co.uk, as Atom updates its rates frequently and withdraws products once funding targets are met.
How Atom Bank Fixed Saver Rates Work
When you open an Atom Fixed Saver, the rate quoted on the day of application is the rate you receive for the full term — regardless of how the Bank of England base rate changes during that period. This provides certainty about your return. If the base rate falls during your term, your rate remains unchanged (an advantage). If the base rate rises, you cannot access the higher rate without closing the bond (a disadvantage, and early closure is generally not permitted).
Atom has historically positioned its fixed-rate bonds at or near the top of the market for comparable terms, attracting savers via rate comparison sites such as Moneyfacts. However, the market for fixed-rate savings is highly competitive, and Atom's rates change frequently as it meets or pauses funding targets.
Atom Bank Fixed Saver vs Competitors 2026
| Provider |
Term Options |
Min Deposit |
FSCS? |
App-Only? |
| Atom Bank |
3m, 6m, 1–5yr |
£50 |
Yes (£85k) |
Yes |
| OakNorth Bank |
3m, 6m, 1–5yr |
£1 |
Yes (£85k) |
No (web) |
| JN Bank UK |
1, 2, 3yr |
£1,000 |
Yes (£85k) |
No (web) |
| Cynergy Bank |
1, 2, 3yr |
£10,000 |
Yes (£85k) |
No (web) |
| Marcus UK |
Easy access only |
£1 |
Yes (£85k) |
No (web/app) |
The £50 Minimum Deposit Advantage
Atom Bank's minimum opening deposit of £50 for its Fixed Saver is notably low — many competitors require £1,000 or more. This makes Atom accessible to savers who want to lock in a fixed rate on a smaller initial sum, perhaps as part of a regular saving habit or while building up a larger fund. The maximum deposit on a personal Fixed Saver is typically £100,000 — well above the £85,000 FSCS limit, so savers depositing more than £85,000 should be aware that only £85,000 is protected per institution.
Opening an Atom Bank Account: App-Only Access
- ▸Download the Atom Bank app from the App Store or Google Play.
- ▸Create an account using your email address and set a PIN.
- ▸Complete identity verification: photograph your passport or driving licence and take a biometric selfie.
- ▸Select the Fixed Saver product and term you want.
- ▸Link your UK current account and transfer the opening deposit. The Fixed Saver opens when Atom receives the cleared funds.
- ▸At maturity, Atom contacts you via the app to reinvest or withdraw your funds.
All account management — including viewing balances, reviewing interest, and maturing a bond — is done exclusively via the app. There is no web portal or telephone service for account management (though an emergency line exists for card and fraud issues on the mortgage products).
Atom Bank Business Savings
Atom's Business Saver products are available to sole traders and limited companies registered in the UK. The application process for businesses requires Companies House registration number, ID for all directors and PSCs, and proof of the company's trading address. Business savings at Atom are FSCS-protected up to £85,000 per business entity. Atom's business savings rates have historically been competitive — useful for businesses holding surplus cash awaiting a specific expenditure.
Atom Bank and the Mortgage Market
In addition to savings, Atom Bank offers residential mortgages and business loans. Its residential mortgage range includes fixed-rate products for purchase and remortgage, available through FCA-authorised mortgage brokers. Atom does not offer mortgages directly to consumers — all mortgage applications go through an approved intermediary. Its mortgage products have gained a reputation for competitive fixed rates, particularly for two- and five-year deals.
Case Scenario 1: Locking in a Rate Before a Base Rate Cut
Scenario: A saver has £25,000 in an easy-access account. Following a Bank of England rate decision meeting, she expects the base rate to be cut in the coming months. She opens a two-year Atom Bank Fixed Saver at the current rate, locking in the return for 24 months. Eight months later, the base rate is cut by 0.50%. Her Atom rate remains unchanged — she benefits from the higher pre-cut rate for the remaining 16 months of her term. At maturity, she decides whether to reinvest at the then-current rate or redirect the funds.
Case Scenario 2: Small Saver Entering Fixed Market
Scenario: A university student has saved £200 from part-time work and wants to earn more than his student union credit union offers. He opens an Atom Bank three-month Fixed Saver with his £200 — within Atom's £50 minimum. The three-month term fits his timeline (he will need the money for a holiday in four months). He earns a higher rate than he would on a standard easy-access account. At maturity, he withdraws the full amount plus interest back to his Starling personal account.
Related reading: UK Challenger Banks 2026 | Cynergy Bank 2026 | Marcus Bank UK 2026
Disclaimer
This article is for informational purposes only and does not constitute financial advice. Always verify current rates and product availability directly at atombank.co.uk before opening an account.
Frequently Asked Questions
Is Atom Bank safe?
Atom Bank plc is PRA-authorised and FCA-regulated (firm reference 661960). Deposits are FSCS-protected up to £85,000 per person. Atom has a full UK banking licence and operates under the same regulatory framework as HSBC or Lloyds.
Can I access my Atom Fixed Saver before maturity?
Generally, no. Atom's Fixed Saver accounts do not permit early withdrawal during the term. At maturity, Atom will contact you via the app and give you a window to reinvest or withdraw. Always check the specific terms of the product you are applying for before committing.
Does Atom Bank offer an ISA?
As of 2026, Atom Bank does not offer an ISA wrapper. Interest earned on Atom savings accounts counts toward your Personal Savings Allowance and may be subject to income tax if the allowance is exceeded.
What is the minimum deposit for Atom Bank savings?
The minimum deposit for Atom Bank's Fixed Saver is £50 — one of the lowest minimums among UK fixed-rate bond providers. The maximum is typically £100,000 per account (though only £85,000 is FSCS-protected).
Does Atom Bank have a current account?
No. Atom Bank does not offer a current account or debit card. It is a savings and lending bank. You must maintain a current account at another bank to fund Atom savings and receive withdrawals.
How does Atom Bank contact me at maturity?
Atom Bank communicates exclusively through its mobile app and by email. Before your Fixed Saver matures, Atom will send in-app and email notifications giving you options to reinvest in a new term or withdraw your funds to your linked current account. If you do not action the maturity notification, Atom's terms will specify whether the funds are automatically reinvested or held in an easy-access account pending your instruction.
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