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Savings · Comparison

Best savings accounts & Cash ISAs in the UK (2026)

Independent, side-by-side comparison of the UK's savings accounts and Cash ISAs, ranked by AER, bonus conditions and FSCS protection, with every conditional and introductory rate shown alongside its real fallback.

7 providers tested Updated Jul 2026FCAFSCS

Not financial advice. FSCS protects UK bank deposits up to £120,000 per person, per authorised firm: a different scheme from investment protection. Savings rates change frequently; confirm current terms before opening an account.

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Savings Accounts & Cash ISAs

Expert Reviews & Ratings

Data verified July 11, 2026 · Reviewed by SmartFinPro Research · How we test

Atom Bank leads this comparison on trust: the strongest independently corroborated customer rating here, 4.8-5.0/5 on Trustpilot, backed by a competitive Reward-tier rate and a Cash ISA option; Charter Savings Bank has the best unconditional easy-access rate of the 7, 4.21% AER with no bonus conditions; and Shawbrook Bank is the most consistently well-reviewed long-running fixed-rate option, a fixture of UK best-buy tables since 2017.

Atom BankTop pickBest overall 4.9Visit site Charter Savings BankBest unconditional easy-access rate 4.3Visit site Shawbrook BankBest long-running fixed-rate option 4.7Visit site

How we test Savings Accounts & Cash ISAs

We compare each bank's headline AER, the exact conditions required to earn it, the fallback rate that applies when a condition is missed, Cash ISA availability and FSCS protection status from official rate pages, cross-checked against MoneySavingExpert and Which? where a canonical figure could be independently confirmed. We never show a bonus or introductory rate without its conditions attached: a rate that requires no withdrawals in a given month, or applies only for 12 months to new customers, is materially different from an unconditional rate, and we label each accordingly. We disclose real, sourced regulatory and complaint history plainly rather than omitting it. Rankings never depend on commissions. Every provider on this page is currently a visit-only listing.

What to look for

FSCS £120,000: bank deposits, not investments

Since 1 December 2025, UK bank deposits are FSCS-protected up to £120,000 per person, per authorised firm: all 7 banks on this page hold a full UK banking licence and this protection applies. This is a different, higher scheme from the £85,000 limit that covers investments (shares, funds, ETFs) on our separate investing-apps comparison; never assume the two figures are interchangeable.

Bonus rates almost always have a catch

Atom Bank's top Reward rate (4.75-4.85% AER) requires making no withdrawal in a given month, dropping to 2.50% the moment you do. Chase UK's Boosted Saver (4.5% AER) only applies for 12 months to new customers, before reverting to the Standard Saver rate. Zopa's higher rate requires an active Biscuit current account. Always check the base/fallback rate (not just the headline) before choosing an account based on rate alone.

Not every bank offers a Cash ISA

Chase UK does not currently offer a Cash ISA: a genuine gap if tax-free savings matter to you. The other 6 all offer at least one Cash ISA product, though rates and terms (easy-access vs. fixed) vary. Cash ISA allowances are separate from Stocks & Shares ISA allowances but share the same overall £20,000 annual limit across all ISA types combined.

Reading disclosed issues honestly

Marcus's UK Trustpilot score is genuinely weak (2.9/5), driven by 2025 complaints about sudden account closures, disclosed plainly despite Marcus's competitive MoneySavingExpert-listed fixed rate. Shawbrook carries a legacy 2021 timeshare mis-selling case (Financial Ombudsman ruling upheld on High Court judicial review in 2023) that predates this research window but is disclosed for transparency, as related claims reportedly continue.

Related guides & tools

Sources & references

Provider data is collected from official pricing and disclosure pages and re-verified on the dates shown. Regulatory references link to the official register or scheme page.

Frequently asked questions

Atom Bank leads overall on trust, combining the strongest customer rating in this comparison with a competitive Reward-tier rate and Cash ISA availability. Charter Savings Bank has the best unconditional rate (4.21% AER, no conditions attached) and Shawbrook Bank is the strongest long-running fixed-rate option, consistently well-reviewed. Rates are re-verified regularly, and the ranking never depends on commissions.
Yes, all 7 banks on this page hold a full UK banking licence, so deposits are FSCS-protected up to £120,000 per person, per bank (raised from £85,000 in December 2025). Paragon Bank shares its licence with its Spring savings brand, so a combined balance across both counts toward the same £120,000 cap: check the FSCS row for each provider's specific position.
No, Chase UK does not currently offer a Cash ISA. The other 6 (Marcus, Zopa, Atom, Paragon, Charter Savings Bank and Shawbrook) all offer at least one Cash ISA product, with rates and terms varying between easy-access and fixed options.
AER (Annual Equivalent Rate) shows what you'd earn over a full year including the effect of compounding, letting you compare accounts with different interest-payment frequencies on a like-for-like basis. Always check whether a headline AER is unconditional, requires a monthly condition (like Atom Bank's no-withdrawal rule), or is a time-limited introductory rate: we label each account's rate type explicitly.
Every rate and disclosure on this page was verified against official bank rate pages, MoneySavingExpert and the Bank of England on 11 July 2026, when the Bank of England base rate stood at 3.75%. Savings rates change frequently: confirm the current rate directly with the provider before opening an account.

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Affiliate & FCA Disclosure

SmartFinPro may earn commissions when you click on certain links and purchase financial products. This does not affect the price you pay. Our reviews are editorially independent and based on publicly available information and our own testing. Capital at risk with investment products.

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