Atom bank vs the Co-operative Bank: fixed savings compared
Important: This guide provides general information, not personalised financial advice. Financial products, rates and eligibility rules can change, so check the provider’s current terms before applying. You can check a firm’s details on the FCA Register.
FSCS protects eligible deposits up to £120,000 per person, per authorised institution.
Quick answer
For one-year fixes, Atom paid 4.90% AER and the Co-operative Bank 4.25% AER; for three years, 5.10% vs 4.25%, as of 19 October 2026.
The Co-operative Bank has branches and a 7.00% Regular Saver for its current account customers; Atom is app-only with a £50 minimum.
Atom vs Co-op Bank compared
| Feature | Atom bank | Co-operative Bank |
|---|---|---|
| 1-year fixed | 4.90% AER | 4.25% AER |
| 2-year fixed | 5.10% AER | 4.25% AER |
| 3-year fixed | 5.10% AER | 4.25% AER |
| Minimum | £50 | £1,000 |
| Cash ISA | Easy access 4.25% AER (no transfers in) | Fixed 4.25% AER (1 or 2 years) from £5,000 |
| Branches | No | Yes |
Figures as of 4 October 2026, taken from each provider’s own website; Atom and Co-operative Bank fixed rates re-checked on 19 October 2026. Rates and fees can change.
Who each suits
- Atom: lump-sum savers happy with an app
- Co-op Bank: savers who want branches or a regular saver
Who should skip it
These are general points to weigh up, not advice. You may want to look elsewhere if:
- You need access before the term ends — neither allows it on fixed deposits
Full explanation
Higher fixed rates usually mean less flexibility. Keep an emergency fund in easy access first.
The catch
Co-op fixed ISAs need £5,000; Atom’s Cash ISA doesn’t accept transfers in.
Check each bank’s current rates.
These go straight to each provider’s own website. They aren’t referral links and we don’t earn from them.
FAQs
Which pays more on fixed savings?
Atom’s rates were higher across one to three years, as of 19 October 2026.
Can I withdraw early?
Not from Atom Fixed Savers. Check Co-op’s fixed deposit terms before you open one.
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