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Cynergy Bank: Cash ISA reviews

Name: Cash ISA
Rating: 4.87 (159 reviews)

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4.87

Based on 159 reviews, last reviewed 26th Mar 2026

14700% increase in 5 star reviews

in the past 90 days

200% increase in 1 star reviews

in the past 90 days

93%

2 star

Latest highest rating:

5

Cynergy review Clear website. Decent rates. More content is unessaessary Reviewed on: 26th March 2026

Latest lowest rating:

1

terrible telephone customer service at ISA maturity. terrible telephone customer service at ISA maturity. apparent new online system that was not functional 11 days before maturity. no workaround. had ap... Read more Reviewed on: 23rd March 2026

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About this product

Cynergy Bank have a range of cash ISAs.

You can choose from fixed rate cash ISAs or easy access cash ISAs. Cynergy Bank cash ISAs can be opened with a minimum of £500. You can open and manage a Cynergy Bank cash ISA online.

Cynergy Bank cash ISA reviews help you find out what it’s really like to be a customer. If you’ve used Cynergy Bank before, you can also leave a review and share your experience.

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Cynergy Bank Cash ISA reviews (159)

Cash ISA excellent service

Last year I transferred a Cash ISA to Cynergy Bank and the process was very smooth and easy and the interest rate was higher than other providers. I recently reinvested my Cash ISA and the process was straightforward and again a competelitive rate. Excellent service, thanks Reviewed on: 23rd March 2026

Excellent, reliable service.

Excellent, reliable service. Online help is easy accessible and resolves issues in minutes. Reviewed on: 23rd March 2026

ISA - End of Tax Year deadlines

Cynergy Bank had always provided guidance towards the end of the tax year re. ISA to ensure I maximise my tax-free allowances, Reviewed on: 23rd March 2026

I have used them as my isa provider for the past 2 y...

I have used them as my isa provider for the past 2 years ,opening an account and arranging the transfer of an ISA from anothe rprovider was straightforward. Reviewed on: 23rd March 2026

Cynergy have gone from strength to strength.

Cynergy have gone from strength to strength. Reviewed on: 23rd March 2026

Easy to open cash isa with excellent interest rate g...

Easy to open cash isa with excellent interest rate good communication fron Cynergy whilst doing this Reviewed on: 23rd March 2026

Very good interest rates excellent customer service

Very good interest rates and excellent customer service. Brilliant App and very use to use. Reviewed on: 23rd March 2026

Straight forward , good information, good value inve...

Straight forward , good information, good value investment - best on market at the time Reviewed on: 23rd March 2026

Geat rates on all their accounts

Rates are always good on all the accounts and if you have any queries, the customer service staff are great - so helpful! Reviewed on: 23rd March 2026

Unbeatable

Always very helpful and offer the best interest rates Reviewed on: 23rd March 2026

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