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Cynergy Bank: Cash ISA reviews

Name: Cash ISA
Rating: 4.85 (302 reviews)

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4.85

Based on 302 reviews, last reviewed 19th Apr 2026

27900% increase in 5 star reviews

in the past 90 days

600% increase in 1 star reviews

in the past 90 days

92%

Latest highest rating:

5

Easy to navigate site. Friendly , helpful staff. Easy to navigate online banking. Keeps me updated about offers. Reviewed on: 19th April 2026

Latest lowest rating:

1

Cynergy Bank complaint team has been very difficult... Cynergy Bank complaint team has been very difficult to get through to as they do not have an option to speak to them and have never listened to my iss... Read more Reviewed on: 18th April 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 (302)

Contact Cynergy

I am most impressed with how easy it is to contact Cynergy. And how friendly, knowledgeable, patient and helpful the staff is. Savings and isa rates have always been competitive and it is very easy to renew contracts. Reviewed on: 23rd March 2026

Cash ISA's both returning above 4%

I am happy with my two Cash ISA's, both returning above 4% Reviewed on: 23rd March 2026

Great rates and customer services .

Great rates and customer services . Easy to understand how to apply when you find the product you are looking for Reviewed on: 23rd March 2026

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

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